A collecting device for loosening and collecting debris in a well comprises a first and second end portions, a collecting receptacle between the first and second end portions having at least one receptacle section and at least one screen receptacle, and a motor. The device at its first end includes a feed pipe, a conveying screw in feed pipe driven by the motor and arranged to move the debris in towards the collecting receptacle, and a tool at the leading end portion of the conveying screw. A method described of loosening and collecting debris in a well by the collecting device.
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
F04C 2/107 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
2.
Collecting device and method for loosen and collect debris in a well
A collecting device and method for loosening and collecting debris in a well, the collecting device includes a first end portion and a second end portion; a collecting receptacle between the first and second end portions, the collecting receptacle including at least one receptacle section and at least one screen receptacle section and at least one screen receptacle; a motor; and the collecting device, at its first end portion, including a feel pipe; a conveying screw in the feed pipe driven by the motor, the conveying screw being arranged to move the debris in towards the collecting receptacle and a tool at the leading end portion of the conveying screw.
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
F04C 2/107 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
3.
DOWNHOLE TRACTOR COMPRISING AN IMPROVED HYDRAULIC SYSTEM
The invention relates to a downhole tractor (10) comprising a hydraulic system (10s) for driving a plurality of hydraulic cylinders (160-1..160-4) and a plurality of hydraulic motors (170-1..170-4). The hydraulic system (10s) comprises: i) a hydraulic power pack (100a); ii) a first hydraulic supply line (200) for supplying hydraulic fluid to the plurality of hydraulic cylinders (160-1..160-4); iii) a second hydraulic supply line (300) for supplying the hydrau- lic fluid to the plurality of hydraulic motors (160-1..160-4); iv) a valve section (400) com- prising respective parts (200a, 300a) of said hydraulic supply line (200, 300), and an inlet (401) for receiving the hydraulic fluid, and a set of valves (V3..V6, PCV1, PCV2, 115, 116), and v) a hydraulic bypass supply line (250) coupled to the hydraulic power pack (100a) for supplying the hydraulic fluid directly to the inlet (401) of the valve section (400) bypassing at least part of the first hydraulic supply line (200) and the second hydraulic supply line (300). The first and the second hydraulic supply line (200, 300) comprises two parts (200-1, 200-2, 300-1, 300-2) that are connected via the valve section. Each respec- tive part (200-1, 200-2, 300-1, 300-2) is connected to a respective sub-set of the plurality of hydraulic components (160-1..160-4, 170-1..170-4). The valve section (400) is config- ured for individually controlling flow of the hydraulic fluid into each respective part (200-1, 200-2, 300-1, 300-2) of the hydraulic supply lines (200, 300). The downhole tractor in ac- cordance with the invention enables a much higher level of control than the downhole tractors of the prior art.
E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
4.
METHOD AND APPARATUS FOR PERFORMING A SURVEY OF TUBING WHICH IS STUCK IN A BOREHOLE, E.G. FOR DETERMINING A FREE POINT
An assembly for performing a survey of tubing which is stuck in a borehole is described, together with a related method and a device for use in the assembly. In various embodiments, the assembly has a tractor for advancing the assembly along the tubing on an inside thereof; at least one engager connected to the tractor, the engager being configured to couple the assembly to a wall of the tubing, such that a stimulus applied to the tubing, e.g. components of force or manipulation of the tubing, can be communicated to produce a response in a part of the assembly. A detector may detect the response when the assembly is coupled to the wall of the tubing, in order to produce data based on the response for determining a location at which the tubing may, or may not, be subjected to at least one operation for freeing the string or a portion thereof.
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
E21B 31/107 - Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
There is described a method of removing equipment from a section of a wellbore, and related apparatus. In embodiments of the invention a tool string (10) is provided having a tractor (15) and a GS-pulling tool (14). The tool string (10) is run into the wellbore using the tractor (15), at least one section of the tractor being positioned ahead of the GS-pulling tool (14) within the tool string (10), and the GS-pulling tool (14) is used to couple the equipment (12) to the tool string (10), for allowing the equipment (12) to be removed.
E21B 31/20 - Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
E21B 47/09 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
6.
Apparatus for use in a tractor in a wellbore and methods
This invention relates to a tractor for use in a wellbore, an apparatus for use in the tractor and related methods. In one embodiment the apparatus has a body, a drive wheel and a movable arm for supporting drive wheel. The arm may be rotatably movable using an actuator such that the drive wheel can be extracted from the body and brought into engagement with a wall of the wellbore, and may be arranged to be offset from a central region of the apparatus for providing accommodation space for the actuator in the body.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
7.
Method for recovering tubular structures from a well and a downhole tool string
This invention relates to a method for recovering a tubular structure (3) from a well (1), wherein a so-called free point is defined as the location where the tubular structure is stuck in the well. The method comprising providing a downhole tool string comprising a pipe-severing tool and an upper part of the downhole tool string; lowering the downhole tool string into the tubular structure to release the free pipe. Before the step of triggering the pipe-severing tool to sever the tubular structure, the method includes releasing the pipe-severing tool and subsequent withdrawing the upper part, of the downhole tool string away from the free point towards the surface over at least a predefined distance. The invention relates to a downhole tool string for use in such method.
E21B 31/00 - Fishing for or freeing objects in boreholes or wells
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
E21B 31/16 - Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
E21B 23/01 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
E21B 29/02 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground by explosives or by thermal or chemical means
E21B 29/08 - Cutting or deforming pipes to control fluid flow
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
This invention relates to a cutting unit for a well pipe. The cutting unit includes a tool housing axially displaceable and rotatable in the well pipe, arranged in the tool housing at least one cutting tool displaceable in a radial direction, the unit connected to a rotary adapter for rotation around a center axis, and the tool housing provided with a leading end portion and a coupling portion, the leading end portion being conical, sloping towards the center axis and away from the coupling portion; and the cutting unit provided with an elongated springable tool mount with a first end portion, a second end portion and a resilient portion between first end portion and second end portion, elongated tool mount positioned in an external recess in the tool housing, and the second end portion positioned at the leading end portion, and the tool mount tensioned towards the center axis; a sleeve positioned around the coupling portion, the first end portion attached to the sleeve; at least one shear body fixing the sleeve to the tool housing; an internal first bevel on the second end portion of the tool mount; a cutting unit attached to the second end portion on the opposite side of the internal first bevel; and a push rod connected to a cone body, cone body resting against the first bevel.
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
9.
Wireline operated dump bailer and method for unloading of material in a well
This invention relates to a dump bailer (1) for insertion into a well (20) in the ground. The dump bailer (1) includes a receptacle (2) which communicates with surroundings through an inlet (4) and an outlet (6), and a pump (10) positioned in a flow path (7) between the inlet (4) and the outlet (6). The pump (10) is positioned at the outlet (6), and the pump (10) during transport of the dump bailer (1) in the well (20) constitutes a sealed barrier for the carried material (18) in the receptacle (2). A method for use of the dump bailer (1) is also described.
E21B 34/06 - Valve arrangements for boreholes or wells in wells
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
F04B 47/08 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth the motors being actuated by fluid
10.
Wireline tractor comprising a disc-shaped cutting device for perforating of a tubing wall and method for perforating a tubing wall
This invention relates to a wireline tractor (10) for use in a casing or tubing (4) in a well. The wireline tractor (10) includes at least one retractable wheel (14) for driving within the casing or tubing (4) and a rotatable disc-shaped cutting device (11) mounted on an actuator (13) that is coupled to the wireline tractor. The cutting device (11) and the actuator (13) are configured for pressing the cutting device (11) against a wall of the casing or tubing (4) and for cutting a perforation (100) in the wall of the casing or tubing (4), in operational use of the wireline tractor (10). The invention further relates to a method for perforating a casing or tubing (4) in a well.
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
The invention relates to a downhole tool (100) for use in a petroleum well. The downhole tool (100) comprises a first part (110) comprising a driving unit (8), and second part (120) comprising a driven unit (9), wherein the driving unit (8) is configured for driving the driven unit (9). The downhole tool (100) further comprises a coupling unit (1) having an input side (S1) coupled with the driving unit (8) and an output side (S2) coupled with the driven unit (9), wherein the driving unit (8) is configured for driving the driven unit (9) via the coupling unit (1), wherein the coupling unit (1) comprises a torque limiting coupling having a first operational mode wherein the coupling unit (1) transfers all torque from the input side (S1 ) to the output side (S2), the coupling unit (1) further having a second operational mode, wherein the coupling unit (1) slips such that less torque is transferred from the input side (S1) to the output side (S2), wherein the second operational mode is automatically activated when the torque load on the input side exceeds a predefined level, and wherein the first operational mode is automatically activated when the torque load on the input side reduces to a level below a further predefined level.
The invention relates to a downhole tool (10) for use in a casing or tubing (99) in a well comprising a support (15) and a brush (12). The downhole tool (10) further comprises a lever arm (13) having a first end (13-1) and a second end (13-2) opposite the first end (13-1). The lever arm (13) is pivotably mounted to the support (15) and the brush (12) is mounted at the second end (13-2) of the lever arm (13). A driver means is provided for driving the lever arm (13) outwardly to press the brush against a wall of the casing or tubing (99) in operational use of the downhole tool (10). An advantage of the invention is that one size of the downhole tool may fit all sizes of a casing or tubing. The invention also relates to method of cleaning and honing casings or tubings in a well.
There is described a method of removing equipment from a section of a wellbore, and related apparatus. In embodiments of the invention, a tool string (10) is provided comprising a tractor (15) and a GS-pulling tool (14). The tool string (10) is run into the wellbore using the tractor (15), at least one section of the tractor being positioned ahead of the GS-pulling tool (14) within the tool string (10), and the GS-pulling tool (14) is used to couple the equipment (120) to the tool string (10), for allowing the equipment (120) to be removed.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
E21B 31/20 - Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
14.
Collecting device for particulate material in a well and a method for collecting the particulate material and transporting it out of the well
This invention relates to a collecting device (1) for loosening and collecting particulate material from a well. The device includes a first end portion and a second end portion; a feed pipe (6) in the first end portion; a collecting container (8) including at least one container section (10), between the feed pipe (6) and the second end portion. A conveyor (18), in the feed pipe (6), moves the particulate material in toward the collecting device (1). The device further includes a tool (20) at the leading end portion of the conveyor (18) and a fluid outlet (38) at the second end portion; a mono pump (12) driven by a motor (22); and at least one container section (10) in a flow path (40) on the pressure side of the mono pump (12). A method for loosening and collecting particulate materials from a well by means of the collecting device (1) is described as well.
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
15.
METHOD OF REMOVING EQUIPMENT FROM A SECTION OF A WELLBORE AND RELATED APPARATUS
There is described a method of removing equipment from a section of a wellbore, and related apparatus. In embodiments of the invention, a tool string (10) is provided comprising a tractor (15) and a GS-pulling tool (14). The tool string (10) is run into the wellbore using the tractor (15), at least one section of the tractor being positioned ahead of the GS-pulling tool (14) within the tool string (10), and the GS-pulling tool (14) is used to couple the equipment (120) to the tool string (10), for allowing the equipment (120) to be removed.
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
E21B 31/20 - Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
This invention relates to a hydrate plug remover for removal of a hydrate plug in a tube. The hydrate plug remover includes a collecting container provided with a valve in a lower end portion. The valve connects the collecting container to surroundings of the hydrate plug remover. The collecting container in an upper end portion is provided with a circulation gate connecting the collecting container to the surroundings of the hydrate plug remover.
E21B 37/06 - Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting the deposition of paraffins or like substances
F16L 55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
17.
Activating tool for displacing of a component in a well tube and method for adjusting the activating tool
This invention relates to an activating tool (1) for connecting to and displacing a component (40) in a well tube (4), activating tool (1) includes a driving device (8) axially displaced in two axial directions; a sleeve-shaped release element (14) with an annular end portion (52); a gripper holder (20) arranged axially displaceable in release element (14) and displaced by driving device (8); axially longitudinal recesses (24) in gripper holder (20); at least two radially displaceable gripping elements (26) spring-biased in a radial outward direction, positioned in respective recesses (24) and complementarily fitting respective cut-outs (42) in the component (40), and each gripping element (26) has a slanted rear portion (48); gripping elements (26) retracted into release element (14) in passive positions of gripping elements (26), and gripping elements (26), at least partially, displaced out of release element (14) in active positions of gripping elements (26) so end portion (52) hits slanted rear portions (48) of gripping elements (26) when gripper holder (20) is pulled inwards in release element (14), gripping elements (26) optionally switched between active and passive positions. A method for changing gripping element (26) in the activating tool (1) is described.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 31/20 - Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
E21B 34/14 - Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
18.
APPARATUS FOR USE IN A TRACTOR IN A WELLBORE AND METHODS
There is described a tractor for use in a wellbore, apparatus for use in the tractor, and related methods. In certain embodiments, the apparatus has a body, a drive wheel and a movable support for supporting the drive wheel. The support may be rotatably movable using an actuator such that the drive wheel can be extracted from the body and brought into engagement with a wall of the wellbore, and may be arranged to be offset from a central region of the apparatus for providing accommodation space for the actuator in the body.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
19.
APPARATUS FOR USE IN A TRACTOR IN A WELLBORE AND METHODS
There is described a tractor for use in a wellbore, apparatus for use in the tractor, and related methods. In certain embodiments, the apparatus has a body, a drive wheel and a movable support for supporting the drive wheel. The support may be rotatably movable using an actuator such that the drive wheel can be extracted from the body and brought into engagement with a wall of the wellbore, and may be arranged to be offset from a central region of the apparatus for providing accommodation space for the actuator in the body.
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
20.
COLLECTING DEVICE AND METHOD FOR LOOSEN AND COLLECT DEBRIS IN A WELL
A collecting device (1) for loosening and collecting debris in a well, the collecting device (1) comprising : - a first end portion and a second end portion; - a collecting receptacle (8) between the first end portion and the second end portion, the collecting receptacle (8) including at least one receptacle section (10) and at least one screen receptacle (10'); - a motor (22); and the collecting device (1), at its first end portion, including : - a feed pipe (6); - a conveying screw (18') in the feed pipe (6) driven by the motor (22), the conveying screw (18') being arranged to move the debris in towards the collecting receptacle (8); and - a tool (20) at the leading end portion of the conveying screw (18'). A method of loosening and collecting debris in a well by means of the collecting device (1) is described as well.
B08B 9/04 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes
B08B 9/045 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices being rotated while moved
B08B 9/047 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices having motors for powering cleaning tools
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
A collecting device (1) for loosening and collecting debris in a well, the collecting device (1) comprising : - a first end portion and a second end portion; - a collecting receptacle (8) between the first end portion and the second end portion, the collecting receptacle (8) including at least one receptacle section (10) and at least one screen receptacle (10'); - a motor (22); and the collecting device (1), at its first end portion, including : - a feed pipe (6); - a conveying screw (18') in the feed pipe (6) driven by the motor (22), the conveying screw (18') being arranged to move the debris in towards the collecting receptacle (8); and - a tool (20) at the leading end portion of the conveying screw (18'). A method of loosening and collecting debris in a well by means of the collecting device (1) is described as well.
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
B08B 9/04 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes
B08B 9/045 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices being rotated while moved
B08B 9/047 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices having motors for powering cleaning tools
The invention relates to a method for recovering a tubular structure (3) from a well (1), wherein a so-called free point (4) is defined as the location (2) where the tubular structure (3) is stuck in the well (1). The method comprising steps of: i) providing a downhole tool string (100) comprising a pipe-severing tool (5) and an upper part (7) of the downhole tool string (100); ii) lowering the downhole tool string (100) into the tubular structure (3) to such a depth that the pipe-severing tool (5) is at the free point (4) of the tubular structure (3), and iii) triggering the pipe-severing tool (5) to severe said tubular structure (3) to release the free pipe (3u). Before the step of triggering the pipe-severing tool (5) to severe said tubular structure (3), the method comprises steps of releasing the pipe-severing tool (5) and subsequent withdrawing the upper part (7) of the downhole tool string (100) away from the free point (4) towards the surface over at least a predefined distance (d). The invention further relates to a downhole tool string (100) for use in such method.
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
E21B 29/02 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground by explosives or by thermal or chemical means
E21B 31/00 - Fishing for or freeing objects in boreholes or wells
E21B 31/16 - Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
23.
METHOD FOR RECOVERING TUBULAR STRUCTURES FROM A WELL AND A DOWNHOLE TOOL STRING
The invention relates to a method for recovering a tubular structure (3) from a well (1), wherein a so-called free point (4) is defined as the location (2) where the tubular structure (3) is stuck in the well (1). The method comprising steps of: i) providing a downhole tool string (100) comprising a pipe-severing tool (5) and an upper part (7) of the downhole tool string (100); ii) lowering the downhole tool string (100) into the tubular structure (3) to such a depth that the pipe-severing tool (5) is at the free point (4) of the tubular structure (3), and iii) triggering the pipe-severing tool (5) to severe said tubular structure (3) to release the free pipe (3u). Before the step of triggering the pipe-severing tool (5) to severe said tubular structure (3), the method comprises steps of releasing the pipe-severing tool (5) and subsequent withdrawing the upper part (7) of the downhole tool string (100) away from the free point (4) towards the surface over at least a predefined distance (d). The invention further relates to a downhole tool string (100) for use in such method.
E21B 31/16 - Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
E21B 29/02 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground by explosives or by thermal or chemical means
E21B 31/00 - Fishing for or freeing objects in boreholes or wells
A cutting unit (1) for a well pipe (4), the cutting unit (1) including a tool housing (6) axially displaceable and rotatable in the well pipe (4), and there being, arranged in the tool housing (6), at least one cutting tool (16) displaceable in a radial direction, the cutting unit (1) being connected to a rotary adapter (2) for the cutting unit (1) to be rotated around a centre axis (46), and the tool housing (6) being provided with a leading end portion (10) and a coupling portion (99), the leading end portion (10) being conical, sloping towards the centre axis (46) and away from the coupling portion (99); and the cutting unit (1) being provided with : - an elongated springable tool mount (14) with a first end portion (140), a second end portion (149) and a resilient portion (32) between the first end portion (140) and the second end portion (149), the elongated tool mount (14) being positioned in an external recess (12) in the tool housing (6), and the second end portion (149) being positioned at the leading end portion (10), and the tool mount (14) being tensioned towards the centre axis (46); - a sleeve (13) which is positioned around the coupling portion (99), the first end portion (140) being attached to the sleeve (13); - at least one shear body (34) fixing the sleeve (13) to the tool housing (6); - an internal first bevel (28) on the second end portion (149) of the tool mount (14); - a cutting unit (16) attached to the second end portion (149) on the opposite side of the internal first bevel (28); and - a push rod (20) connected to a cone body (26), the cone body (26) resting against the first bevel (28).
E21B 29/08 - Cutting or deforming pipes to control fluid flow
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
A cutting unit (1) for a well pipe (4), the cutting unit (1) including a tool housing (6) axially displaceable and rotatable in the well pipe (4), and there being, arranged in the tool housing (6), at least one cutting tool (16) displaceable in a radial direction, the cutting unit (1) being connected to a rotary adapter (2) for the cutting unit (1) to be rotated around a centre axis (46), and the tool housing (6) being provided with a leading end portion (10) and a coupling portion (99), the leading end portion (10) being conical, sloping towards the centre axis (46) and away from the coupling portion (99); and the cutting unit (1) being provided with : - an elongated springable tool mount (14) with a first end portion (140), a second end portion (149) and a resilient portion (32) between the first end portion (140) and the second end portion (149), the elongated tool mount (14) being positioned in an external recess (12) in the tool housing (6), and the second end portion (149) being positioned at the leading end portion (10), and the tool mount (14) being tensioned towards the centre axis (46); - a sleeve (13) which is positioned around the coupling portion (99), the first end portion (140) being attached to the sleeve (13); - at least one shear body (34) fixing the sleeve (13) to the tool housing (6); - an internal first bevel (28) on the second end portion (149) of the tool mount (14); - a cutting unit (16) attached to the second end portion (149) on the opposite side of the internal first bevel (28); and - a push rod (20) connected to a cone body (26), the cone body (26) resting against the first bevel (28).
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
E21B 29/08 - Cutting or deforming pipes to control fluid flow
26.
WIRELINE OPERATED DUMP BAILER AND METHOD FOR UNLOADING OF MATERIAL IN A WELL
Dump bailer (1) for insertion into a well (20) in the ground wherein the dump bailer (1) comprises a receptacle (2) which communicates with the surroundings through an inlet (4) and an outlet (6), and a pump (10) positioned in a flow path (7) between the inlet (4) and the outlet (6), and such that the pump (10) is positioned at the outlet (6), and the pump (10) during transport of the dump bailer (1) in the well (20) constitutes a sealed barrier for the carried material (18) in the receptacle (2). A method for use of the dump bailer (1) is also described.
Dump bailer (1) for insertion into a well (20) in the ground wherein the dump bailer (1) comprises a receptacle (2) which communicates with the surroundings through an inlet (4) and an outlet (6), and a pump (10) positioned in a flow path (7) between the inlet (4) and the outlet (6), and such that the pump (10) is positioned at the outlet (6), and the pump (10) during transport of the dump bailer (1) in the well (20) constitutes a sealed barrier for the carried material (18) in the receptacle (2). A method for use of the dump bailer (1) is also described.
The invention relates to an interface tool (102) and an apparatus (1401') for retrieving a tubing (1201) from a well (3100) at least partly filled with a liquid (1101), the tubing (1201) having a first end portion (Α-Α') and a second end portion (Β-Β'). The apparatus (1401') comprises: i) an engagement means (1403) for engaging the tubing (1201); ii) a sealing means (1404) for sealing the first end portion (Α-Α') of the bore of the tubing (1201); iii) injection means for injecting a low density fluid (1501) into the tubing (1201) in or at an elevation below, the sealing means (1404); and iv) connecting means (3507, 2301, 2401) to a surface of the well (100). The apparatus (1401) comprises a first tool string section (104), a second tool string section (105) and an interface tool (102), wherein the interface tool (102) is configured for connecting the first tool string section (104) and the second tool string section (105). The first tool string section (104) is provided with the engagement means (1403), the sealing means (1404), the injection means and the connection means (3507, 2301, 2401). The second downhole equipment (105) is provided with a sealing means (1301) for closing the second end portion (Β-Β') of the tubing, such as a mechanical plug comprising a check valve, and a cutting tool (3506) for cutting the tubing underneath the sealing means (1301). The invention also relates to a method for retrieving a tubing (1201) from a well (3100) at least partly filled with a liquid (1101), wherein such apparatus is used. The invention makes the removal of a tubing more time and cost efficient than current systems and methods, because multiple steps are carried out with a single tool string.
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
29.
COLLECTING DEVICE FOR PARTICULATE MATERIAL IN A WELL AND A METHOD FOR COLLECTING THE PARTICULATE MATERIAL AND TRANSPORTING IT OUT OF THE WELL
A collecting device (1) for loosening and collecting particulate material from a well, the collecting device (1) including : - a first end portion and a second end portion; - a feed pipe (6) in the first end portion; - a collecting container (8) including at least one container section (10), between the feed pipe (6) and the second end portion; - a conveyor (18) in the feed pipe (6), the conveyor (18) being arranged to move the particulate material in towards the collecting device (1); - a tool (20) at the leading end portion of the conveyor (18); and - a fluid outlet (38) at the second end portion, and being such that the collecting device (1) includes a mono pump (12) driven by a motor (22) and at least one container section (10) in a flow path (40) on the pressure side of the mono pump (12). A method for loosening and collecting particulate materials from a well by means of the collecting device (1) is described as well.
B08B 9/051 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes the cleaning devices having motors for powering cleaning tools
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
30.
COLLECTING DEVICE FOR PARTICULATE MATERIAL IN A WELL AND A METHOD FOR COLLECTING THE PARTICULATE MATERIAL AND TRANSPORTING IT OUT OF THE WELL
A collecting device (1) for loosening and collecting particulate material from a well, the collecting device (1) including : - a first end portion and a second end portion; - a feed pipe (6) in the first end portion; - a collecting container (8) including at least one container section (10), between the feed pipe (6) and the second end portion; - a conveyor (18) in the feed pipe (6), the conveyor (18) being arranged to move the particulate material in towards the collecting device (1); - a tool (20) at the leading end portion of the conveyor (18); and - a fluid outlet (38) at the second end portion, and being such that the collecting device (1) includes a mono pump (12) driven by a motor (22) and at least one container section (10) in a flow path (40) on the pressure side of the mono pump (12). A method for loosening and collecting particulate materials from a well by means of the collecting device (1) is described as well.
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 27/04 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
B08B 9/051 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes the cleaning devices having motors for powering cleaning tools
The invention relates to a downhole tool (10) for use in a casing or tubing (99) in a well comprising a support (15) and a brush (12). The downhole tool (10) further comprises: i) a lever arm (13) having a first end (13-1) and a second end (13-2) opposite the first end (13-1), wherein the lever arm (13) is pivotably mounted to the support (15), wherein the brush (12) is mounted at the second end (13-2) of the lever arm (13), and ii) a driver means for driving the lever arm (13) outwardly to press the brush against a wall of the casing or tubing (99) in operational use of the downhole tool (10). The advantage of the invention is that one size of the downhole tool may fit all sizes of the casing or tubing. The invention also relates to method of cleaning and honing casings or tubings in a well.
The invention relates to a downhole tool (10) for use in a casing or tubing (99) in a well comprising a support (15) and a brush (12). The downhole tool (10) further comprises: i) a lever arm (13) having a first end (13-1) and a second end (13-2) opposite the first end (13-1), wherein the lever arm (13) is pivotably mounted to the support (15), wherein the brush (12) is mounted at the second end (13-2) of the lever arm (13), and ii) a driver means for driving the lever arm (13) outwardly to press the brush against a wall of the casing or tubing (99) in operational use of the downhole tool (10). The advantage of the invention is that one size of the downhole tool may fit all sizes of the casing or tubing. The invention also relates to method of cleaning and honing casings or tubings in a well.
Method for activating and deactivating a GS-tool (2) wherein the GS-tool (2) in addition to grippers (22), a tool housing (32) and a spindle (22) comprises a main spring (50) which is arranged to be able to pre-tension the grippers (44) towards a deactivated position, as the GS-tool (2) is displaceable in a wellbore (10) in the ground, wherein the method comprises: - to couple the spindle (22) of the GS-tool (2) to an actuator mandrel (12) of an actuator (4); - to arrange an activating sleeve (16) between the tool housing (32) and an actuator housing (14); and - to displace the actuator mandrel (12) and thereby the spindle (22) relative to the tool housing (32) in a direction from the GS-tool (2) until the grippers (44) have reached their activated positions by overcoming the force from the main spring (50). A GS-tool for implementing the method is also described.
The invention relates to a wireline tractor (10) for use in a casing or tubing (4) in a well, wherein the wireline tractor (10) comprises at least one retractable wheel (14) for driving within the casing or tubing (4) and a rotatable disc-shaped cutting device (11) mounted on an actuator (13) that is coupled to the wireline tractor, the cutting device (11) and the actuator (13) being configured for pressing said cutting device (11) against a wall of the casing or tubing (4) and for cutting a perforation (100) in said wall of the casing or tubing (4), in operational use of the wireline tractor (10). The invention further relates to a method for perforating a casing or tubing (4) in a well.
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
The invention relates to a wireline tractor (10) for use in a casing or tubing (4) in a well, wherein the wireline tractor (10) comprises at least one retractable wheel (14) for driving within the casing or tubing (4) and a rotatable disc-shaped cutting device (11) mounted on an actuator (13) that is coupled to the wireline tractor, the cutting device (11) and the actuator (13) being configured for pressing said cutting device (11) against a wall of the casing or tubing (4) and for cutting a perforation (100) in said wall of the casing or tubing (4), in operational use of the wireline tractor (10). The invention further relates to a method for perforating a casing or tubing (4) in a well.
E21B 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
An activating tool (1) for connecting to and displacing a component (40) in a well tube (4), the activating tool (1) including : - a driving device (8) which may axially be displaced in two axial directions; - a sleeve-shaped release element (14) provided with an annular end portion (52); - a gripper holder (20) which is arranged in an axially displaceable manner in the release element (14) and is displaced by the driving device (8); - axially longitudinal recesses (24) in the gripper holder (20); - at least two radially displaceable gripping elements (26) spring-biased in a radial outward direction, positioned in respective recesses (24) and complementarily fitting respective cut-outs (42) in the component (40), and each gripping element (26) being provided with a slanted rear portion (48); so that the gripping elements (26) are retracted into the release element (14) in the passive positions of the gripping elements (26), and the gripping elements (26) are, at least partially, displaced out of the release element (14) in the active positions of the gripping elements (26) so that: the end portion (52) hits the slanted rear portions (48) of the gripping elements (26) when the gripper holder (20) is pulled inwards in the release element (14), so that the gripping elements (26) may optionally be switched between taking an active position and a passive position. A method for changing the gripping element (26) in the activating tool (1) is described as well.
E21B 23/02 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
E21B 31/20 - Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
A method for removal of a hydrate plug (7) in a tube (92) in connection with a petroleum well (9) is described, the method comprising: - to provide a hydrate plug remover (2), where the hydrate plug remover (2) comprises a collecting container (21) and where the method further comprises to: - position the hydrate plug remover (2) in a sluice (5); - fill the sluice (5) with a hydrate dissolving fluid; - fill the collecting container (21) which is provided with a valve (3) in the lower end portion (20) of the collecting container (21) with hydrate dissolving fluid through the valve (3); - pressure test the sluice (5); - displace the hydrate plug remover (2) from the hydrate plug (7) and let the hydrate dissolving fluid flow towards the hydrate plug (7) through a circulation gate (22) in the upper end portion (29) of the collecting container (21); - lead loosened hydrate from the hydrate plug (7) into the collecting container (21) via the valve (3); and - displace the hydrate plug remover (2) to the sluice (5) where the collecting container (21) is emptied of hydrate through the circulation gate (22) while hydrate dissolving fluid is flowing into the collecting container (21) through the valve (3). A hydrate plug remover for performing the method is also described.
B08B 9/04 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes
E21B 27/00 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sandDrill bits with means for collecting substances, e.g. valve drill bits
E21B 37/06 - Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting the deposition of paraffins or like substances
A stroker device (1) for use in a borehole (2) in theground, the stroker (1) at least comprising an actuator (6) arranged fordisplacing a tool (10) in a longitudinal direction of the borehole (2),and grippers (26) arranged to anchor the stroker (1) to the wall (36) ofthe borehole (2), alternatively to a pipe wall, wherein the stroker (1) isprovided with driving wheels (34) or driving belts for propulsion.
patents
