Abstract

Various apparatus, a wellbore string incorporating the apparatus, and a computer-implemented method are described, whereby in various examples at least one flexible elongate member is guided from a wellbore string toward a wall of the wellbore for forming at least one lateral bore in a subsurface rock formation for stimulating the formation. The apparatus in such examples has at least one controllable body which is controllable, based upon a detected downhole configuration of the controllable body and/or the wellbore string, to be positioned with respect to the wellbore string for providing at least one exit through which the flexible elongate member is extractable from the wellbore string for extracting the flexible elongate member through the exit in a desired and/or preferred direction.

IPC Classes  ?

• E21B 7/06 - Deflecting the direction of boreholes
• E21B 7/18 - Drilling by liquid or gas jets, with or without entrained pellets
• E21B 17/20 - Flexible or articulated drilling pipes
• E21B 41/00 - Equipment or details not covered by groups
• E21B 47/09 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes

Abstract

Various apparatus, a wellbore string incorporating the apparatus, and a computer-implemented method are described, whereby in various examples at least one flexible elongate member is guided from a wellbore string toward a wall of the wellbore for forming at least one lateral bore in a subsurface rock formation for stimulating the formation. The apparatus in such examples comprises at least one controllable body which is controllable, based upon a detected downhole configuration of the controllable body and/or the wellbore string, to be positioned with respect to the wellbore string for providing at least one exit through which the flexible elongate member is extractable from the wellbore string for extracting the flexible elongate member through the exit in a desired and/or preferred direction.

IPC Classes  ?

• E21B 7/06 - Deflecting the direction of boreholes
• E21B 43/30 - Specific pattern of wells, e.g. optimising the spacing of wells

Abstract

Various apparatus, a wellbore string incorporating the apparatus, and a computer-implemented method are described, whereby in various examples at least one flexible elongate member is guided from a wellbore string toward a wall of the wellbore for forming at least one lateral bore in a subsurface rock formation for stimulating the formation. The apparatus in such examples comprises at least one controllable body which is controllable, based upon a detected downhole configuration of the controllable body and/or the wellbore string, to be positioned with respect to the wellbore string for providing at least one exit through which the flexible elongate member is extractable from the wellbore string for extracting the flexible elongate member through the exit in a desired and/or preferred direction.

IPC Classes  ?

• E21B 7/06 - Deflecting the direction of boreholes
• E21B 43/30 - Specific pattern of wells, e.g. optimising the spacing of wells

Abstract

A method and device are for making lateral openings out of a wellbore in a ground formation where at least one laterally directed drill string is movable in the axial direction inside a motherbore tubular, and where the leading end portion of the drill string is equipped with the drill bit that is driven by a rotatable drill string. The method includes connecting a fluid driven engine to the rotatable drill string inside the motherbore tubular, and directing flow in the motherbore tubular through the fluid driven engine to create rotation of the drill bit via the drill string.

IPC Classes  ?

• E21B 4/02 - Fluid rotary type drives
• E21B 4/16 - Plural down-hole drives, e.g. for combined percussion and rotary drillingDrives for multi-bit drilling units
• E21B 7/06 - Deflecting the direction of boreholes
• E21B 29/06 - Cutting windows, e.g. directional window cutters for whipstock operations
• E21B 7/04 - Directional drilling
• E21B 23/08 - Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
• E21B 41/00 - Equipment or details not covered by groups
• E21B 43/26 - Methods for stimulating production by forming crevices or fractures
• E21B 3/00 - Rotary drilling

Abstract

A method and device for making lateral openings (11) out of a wellbore (1) in a ground formation (2) where at least one laterally directed drill string (28) is movable in the axial direction inside a motherbore tubular (4), and where the leading end portion (16) of the drill string (28) is equipped with the drill bit (18) that is driven by a rotatable drill string (28), wherein the method includes: - connecting a fluid driven engine (22, 24, 26) to the rotatable drill string (28) inside the motherbore tubular (4); and - directing flow in the motherbore tubular (4) through the fluid driven engine (22, 24, 26) to create rotation of the drill bit (18) via the drill string (28).

IPC Classes  ?

• E21B 4/16 - Plural down-hole drives, e.g. for combined percussion and rotary drillingDrives for multi-bit drilling units
• E21B 7/06 - Deflecting the direction of boreholes
• E21B 23/08 - Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
• E21B 41/00 - Equipment or details not covered by groups
• E21B 43/26 - Methods for stimulating production by forming crevices or fractures

Abstract

A method and device for making lateral openings (11) out of a wellbore (1) in a ground formation (2) where at least one laterally directed drill string (28) is movable in the axial direction inside a motherbore tubular (4), and where the leading end portion (16) of the drill string (28) is equipped with the drill bit (18) that is driven by a rotatable drill string (28), wherein the method includes: - connecting a fluid driven engine (22, 24, 26) to the rotatable drill string (28) inside the motherbore tubular (4); and - directing flow in the motherbore tubular (4) through the fluid driven engine (22, 24, 26) to create rotation of the drill bit (18) via the drill string (28).

IPC Classes  ?

• E21B 23/08 - Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
• E21B 41/00 - Equipment or details not covered by groups
• E21B 43/26 - Methods for stimulating production by forming crevices or fractures
• E21B 4/16 - Plural down-hole drives, e.g. for combined percussion and rotary drillingDrives for multi-bit drilling units
• E21B 7/06 - Deflecting the direction of boreholes

Abstract

A method and device for producing an opening (28) from a motherbore (1) into the surrounding formation (2), wherein the method includes: - positioning a motor (6), having a rotatable barrel (10), in the motherbore (4); - passing an elongated body (22) through the barrel (10); and letting the motor (6) rotate the elongated body (22) as the elongated body (22) is moved along the barrel (10) and into the formation (2).

IPC Classes  ?

• E21B 7/06 - Deflecting the direction of boreholes
• E21B 7/08 - Special apparatus for deflecting the boring, e.g. special drill bits, knuckle joints or whipstocks
• E21B 29/06 - Cutting windows, e.g. directional window cutters for whipstock operations

Abstract

A method and device for deploying a cable and an apparatus in a ground formation having a motherbore, wherein the method comprises positioning a non-rotating drill pipe, a cable and an apparatus in a motherbore tubular; and drilling a lateral opening relatively the motherbore by displacing the drill pipe into the formation with the cable and apparatus attached.

IPC Classes  ?

• E21B 19/08 - Apparatus for feeding the rods or cablesApparatus for increasing or decreasing the pressure on the drilling toolApparatus for counterbalancing the weight of the rods
• E21B 7/18 - Drilling by liquid or gas jets, with or without entrained pellets

Abstract

A method and device for deploying a cable (12) and an apparatus (14) in a ground formation (2) having a motherbore (1), wherein the method includes: - positioning a non-rotating drill pipe (8), a cable (12) and an apparatus (14) in a motherbore tubular (4); - drilling a lateral opening (30) relatively the motherbore (1) by displacing the drill pipe (8) into the formation (2) with the cable (12) and apparatus (14) attached.

IPC Classes  ?

• E21B 7/06 - Deflecting the direction of boreholes
• E21B 7/18 - Drilling by liquid or gas jets, with or without entrained pellets
• E21B 23/03 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets
• E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like