Self initiating bend motor for coil tubing drilling

A bending and driving technology, which is applied in the direction of drilling driving devices, drill pipes, drill pipes, etc. in the wellbore, and can solve the problems of high bending capacity of coils that cannot be rotated

Pending Publication Date: 2022-01-28
BAKER HUGHES OILFIELD OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the limitations of using coiled tubing for drilling is limited reach due to the combination of inability to spin the coil and the need for high bending capacity

Method used

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  • Self initiating bend motor for coil tubing drilling
  • Self initiating bend motor for coil tubing drilling
  • Self initiating bend motor for coil tubing drilling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0053] Embodiment 1. A method of drilling a wellbore. The method includes placing a tubular in the wellbore, the tubular including an orientation device coupled to the tubular and a drilling sub connected to and rotatable by the orientation device. The drilling sub includes a driver configured to rotate a drill bit at an end of the drilling sub; a housing having a first section and a second section; and a pivot member, The pivot member is coupled to the first section and the second section of the housing. By maintaining the orienting device rotationally stationary, an inclination about the pivot member is created between the second section and the first section of the housing to allow drilling via rotation of the driver A curved section of the wellbore. The orientation device is rotated to reduce the inclination between the first section and the second section, thereby allowing a straighter section of the wellbore to be drilled.

Embodiment approach 2

[0054] Embodiment 2. The method according to any preceding embodiment, wherein the orienting device comprises a stator segment attachable to the pipe, and a rotor segment rotatable relative to the stator segment, the drilling sub coupled to the rotor segment.

Embodiment approach 3

[0055] Embodiment 3. The method according to any preceding embodiment, further comprising rotating the orientation device to rotate the rotor segment in one of a clockwise direction and a counterclockwise direction.

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Abstract

The invention provides a drilling system and a method of drilling a wellbore. The drilling system includes a tubing, an orientation device affixed to the tubing, a drilling sub having a housing having a first section and a second section, wherein the first section is coupled to a movable element of the orientation device, a shaft disposed in the housing, the shaft coupled to the drive and to the drill bit, and a pivot member coupled to the first section and second section of the housing. The second section of the housing tilts relative to the first section of the housing about the pivot member when the orientation device is rotationally stationary to allow drilling of a curved section of the wellbore. Rotation of the housing via the orientation device reduces the tilt between the first section and the second section to allow for drilling of a straight section of the wellbore.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Patent Application No. 16 / 439,389, filed June 12, 2019, which is incorporated herein by reference in its entirety. Background technique [0003] In the resource recovery industry, coiled tubing refers to the long length of tubing that extends into the wellbore. The coiled tubing may include a drilling system at the bottom end for drilling the wellbore. Coil drilling systems can be directional controlled using directional tools and fixed bending motors. One of the limitations of using coiled tubing for drilling is limited reach due to the combination of inability to spin the coil and the need for high bending capacity. Contents of the invention [0004] A method of drilling a wellbore is disclosed herein. The method includes placing a tubular in a wellbore, the tubular including an orientation device coupled to the tubular and a drilling sub connected to and rotatable by th...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): E21B47/024E21B7/06
CPCE21B47/024E21B7/067E21B7/068E21B17/1078E21B4/02
Inventor福尔克尔·彼得斯安德烈亚斯·彼得
OwnerBAKER HUGHES OILFIELD OPERATIONS LLC