High-precision short-radius rotary steering drilling tool

A rotary steerable drilling, high-precision technology, applied in directional drilling, earthwork drilling, borehole/well components, etc., can solve the problems of small borehole curvature, poor economic benefits, long deflection section, etc., to eliminate a lot of space , save energy, shorten the length of the effect

Inactive Publication Date: 2021-06-04
万晓跃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The development of many oil and gas reservoirs, or solid mineral deposits that require fluidized mining, requires extensive use of drilling technology, even horizontal well drilling technology; because the existing directional drilling technology cannot achieve short-radius steering, it is difficult to develop ultra-thin reservoirs; or in Directional wells that are difficult to build deflection in the cap rock but require large curvature turning after entering the reservoir; or realize branch drilling as much as possible; or realize large-angle turning in shallow formations, or sidetrack branch drilling in existing wellbores In order to realize the production of side well reserves; in the prior art, the production of side well reserves is usually realized by drilling branch wells with screw drilling tools with bent joints; existing data show that the existing screw drilling directional drilling technology And other directional drilling techniques cannot exceed the build-up rate of 15° / 30m
[0003] To sum up, if the wellbore curvature is too large, the existing directional well technology with controllable trajectory cannot be realized; if the wellbore curvature is too small, the build-up section will be too long, and the well section in the turning state will generate a large amount of invalid footage. The economic benefits are poor and the operation difficulty of the construction well section is increased

Method used

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  • High-precision short-radius rotary steering drilling tool
  • High-precision short-radius rotary steering drilling tool
  • High-precision short-radius rotary steering drilling tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Example 1: See attached Figure 1-8 , in the figure: number 3 is a through structure, number 281 is a circuit pressure body, and number 282 is a pressure sleeve. The present invention provides a technical solution: a high-precision short-radius rotary steering drilling tool, which includes a steering drilling The nipple 100, the weight-on-bit torque deflection transmission mechanism 220, the driving nipple 290, and the driving drill string 200, wherein the pilot drilling nipple 100 is driven and connected to the driving nipple 290 through the driving drill string 200, and the driving nipple 290 is fixed inside There is an electric drive actuator drive module 230, the guide drilling sub 100 is composed of a drill bit 110 and a guide sub 120, the guide sub 120 includes a bearing body 121, the end of the bearing body 121 is fixed with the drill bit 110, and the bearing body 121 is provided with The drill bit attitude measurement module 41, the electric drive actuator 140, ...

Embodiment 2

[0072] Example 2: See attached image 3 , the present invention provides a second control deflection driving technical solution: a guide drilling sub 100, which includes a drill bit 110 and a guide sub 120, and the guide sub 120 includes a bearing body 121, and the bearing body 121 is provided with a deflection The guide mechanism 130 and the drill bit attitude measurement module 41, the drill bit attitude measurement module at least includes an accelerometer arranged axially and capable of measuring the axial acceleration component, and a magnetometer arranged axially capable of measuring the axial magnetic flux, the The drill bit 110 is connected to the lower end of the carrying body 121, and the deflection guide mechanism can drive the drill bit to deflect in a preset direction;

[0073] The driving drill string 200 includes a plurality of load-bearing sub-joints connected sequentially from top to bottom, the lowermost load-bearing sub-joint is in contact with the load-bear...

Embodiment 3

[0086] Example 3: See attached Figure 4 The present invention provides a third control deflection driving technical solution: the electric drive actuator 140 includes a plurality of solenoid valves 143 corresponding to each driving hydraulic cylinder 131 one by one, and each solenoid valve 143 is electrically connected to the drive module 230 of the electric drive actuator. connection, the solenoid valve 143 has a first passage and a second passage, the first passage communicates with the driving hydraulic cylinder 131, the second passage communicates with the through flow channel 1211, and the solenoid valve 143 can connect the through flow channel 1211 with the drive hydraulic cylinder 131 Perform periodic communication; specifically, the electrically driven actuator drive circuit 230 opens the path of the two-position two-way valve corresponding to the driving hydraulic cylinder 131 in the sector opposite to the guiding direction, so that the high-pressure fluid in the thro...

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PUM

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Abstract

The invention discloses a high-precision short-radius rotary steering drilling tool. The high-precision short-radius rotary steering drilling tool comprises a steering drilling short section, drilling pressure torque deflection transmission mechanisms, a tool face angle measurement module, a control module, a jumper circuit and a driving drill column, wherein the steering drilling short section is connected to a conventional drill column or a rotary driving device above the steering drilling short section through the driving drill column. The steering drilling short section is composed of a drill bit and a steering short section, the steering short section comprises a bearing body, and the drill bit is fixed to the tail end of the bearing body. The driving drill column comprises a plurality of bearing short sections which are sequentially connected from top to bottom, the bearing short section located at the bottommost portion is connected with the bearing body, every two adjacent bearing short sections are hinged through the corresponding drilling pressure torque deflection transmission mechanism, and the bearing short sections and the bearing body are hinged through the corresponding drilling pressure torque deflection transmission mechanisms. By means of the high-precision short-radius rotary steering drilling tool, drilling, measurement and steering under the short-extremely-short-radius well hole condition can be effectively achieved, and high-curvature well hole steering drilling or steering drilling of a high-curvature well section extending well hole can be achieved.

Description

technical field [0001] The invention relates to the field of short-radius rotary steerable drilling tools, in particular to a high-precision short-radius rotary steerable drilling tool. Background technique [0002] The development of many oil and gas reservoirs, or solid mineral deposits that require fluidized mining, requires extensive use of drilling technology, even horizontal well drilling technology; because the existing directional drilling technology cannot achieve short-radius steering, it is difficult to develop ultra-thin reservoirs; or in Directional wells that are difficult to build deflection in the cap rock but require large curvature turning after entering the reservoir; or realize branch drilling as much as possible; or realize large-angle turning in shallow formations, or sidetrack branch drilling in existing wellbores In order to realize the production of side well reserves; in the prior art, the production of side well reserves is usually realized by dril...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B47/00E21B47/022E21B47/024E21B47/017
CPCE21B7/04E21B47/00E21B47/022E21B47/024
Inventor 徐梓辰杨忠华万晓跃其他发明人请求不公开姓名
Owner 万晓跃
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