The present invention relates to an individual or paired arm control (20) in a wellbore tractor (10) being run in a borehole (30) penetrating a formation (40), as well as a wellbore tractor (10) with such an individual or paired arm control (20).
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
The present invention concerns a drive module (10′, 10″, 10″′, 10″″) for a wellbore tractor (1). Each drive module (10′, 10″, 10″′, 10″″) comprises a drive module housing (13) and a hydraulically actuated and pivoting drive unit (11) comprising an arm housing (11′) and two drive wheels (12′, 12″) arranged thereto. The drive wheels (12′, 12″) are driven by a motor (16) mounted inside the arm housing (11′). The drive wheels (12′, 12″) are drivingly connected to the motor (16) via a drive line comprising a worm gear drive arrangement (14). The invention teaches also a wellbore tractor (1) comprising at least one of said drive modules (10′, 10″, 10″′, 10″″).
E21B 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
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 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
The present invention concerns a drive module (10', 10", 10''', 10'''') for a wellbore tractor (1). Each drive module (10', 10", 10''', 10'''') comprises a drive module housing (13) and a hydraulically actuated and pivoting drive unit (11) comprising an arm housing (11') and two drive wheels (12', 12") arranged thereto. The drive wheels (12', 12") are driven by a motor (16) mounted inside the arm housing (11'). The drive wheels (12', 12") are drivingly connected to the motor (16) via a drive line comprising a worm gear drive arrangement (14). The invention teaches also a wellbore tractor (1)comprising at least one of said drive modules (10', 10", 10''', 10'''').
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 present invention concerns a drive module (10', 10", 10''', 10'''') for a wellbore tractor (1). Each drive module (10', 10", 10''', 10'''') comprises a drive module housing (13) and a hydraulically actuated and pivoting drive unit (11) comprising an arm housing (11') and two drive wheels (12', 12") arranged thereto. The drive wheels (12', 12") are driven by a motor (16) mounted inside the arm housing (11'). The drive wheels (12', 12") are drivingly connected to the motor (16) via a drive line comprising a worm gear drive arrangement (14). The invention teaches also a wellbore tractor (1)comprising at least one of said drive modules (10', 10", 10''', 10'''').
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
5.
DOWNHOLE MONITORING DEVICE ARRANGED IN-LINE WITH A SUCKER ROD STRING
The present invention concerns a downhole logging tool adapted to be arranged in-line in a sucker rod string. The tool is adapted for monitoring and performing at least one of: logging tension/compression, torque, temperature, pressure, and position (acceleration), for the purpose of optimizing (oil)well production and identifying downhole mechanical problems. The tool can be utilized in vertical, deviated and/or horizontal wells. Multiple monitoring tools can be installed in the sucker rod system in order to detect wear issues.
E21B 47/009 - Monitoring of walking-beam pump systems
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
F04B 47/02 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
6.
DOWNHOLE MONITORING DEVICE ARRANGED IN-LINE WITH A SUCKER ROD STRING
The present invention concerns a downhole logging tool adapted to be arranged in-line in a sucker rod string. The tool is adapted for monitoring and performing at least one of: logging tension/compression, torque, temperature, pressure, and position (acceleration), for the purpose of optimizing (oil)well production and identifying downhole mechanical problems. The tool can be utilized in vertical, deviated and/or horizontal wells. Multiple monitoring tools can be installed in the sucker rod system in order to detect wear issues.
E21B 47/009 - Monitoring of walking-beam pump systems
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
F04B 47/02 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
7.
A BARRIER VALVE FOR USE IN A WELL COMPLETION, A TUBULAR PART WITH A ZIGZAG RECESS AND A METHOD FOR OPENING THE BARRIER VALVE
The invention relates to a barrier valve for creating a fluid tight barrier in a well during the installation of completion equipment. The barrier valve includes a housing having a longitudinal direction for being installed in a tubular string. A hinged curved, substantially circular valve flapper is disposed in the housing. The valve flapper has a normally closed position for forming a fluid tight barrier between the inlet side of the housing and the outlet side of the housing. The valve flapper is configured for forming a fluid tight barrier in two directions, i.e. both in an upstream direction and in a downstream direction. A pressure actuated valve flapper actuator is configured for bringing the valve flapper from the closed position to an open position after a predetermined number of pressure increases. Also described is a method for opening a fluid tight barrier valve in a well, as well as a tubular part having a zigzag recess.
The present invention relates to a means and method for providing hydraulic load compensated time delay in downhole well operations. The means according to the invention is characterized in that it includes a piston stem (1) enclosed by a piston housing (2), wherein the means is adapted in such a manner that an axial force, acting either in the direction of stretch or in the direction of compression, causes a pressure buildup in one of two hydraulic chambers (3, 4) which are each filled with an incompressible liquid and which are mutually connected through one or more throttle orifices (8), wherein a sideways floating, supported piston sleeve (5) is arranged between the piston stem (1 ) and the piston housing (2), wherein the piston sleeve (5) is adapted to control the differential pressure across the throttle orifice(s) (8) in such a manner that an increasing axial force acting on the means will, in a predetermined manner, increase the differential pressure across the throttle orifice(s) and hence delay the flow-through of the incompressible liquid from one of the to hydraulic chambers (3, 4) to the second chamber (4, 3), which also causes a predetermined delay of the relative movement between the piston stem (1) and the piston housing (2).
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