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Multilateral well angular difference adjustment tool and angular difference adjustment method thereof

A technology for adjusting tools and branch wells, applied in drilling equipment and methods, drilling equipment, earthwork drilling and production, etc., can solve the problems of low angle difference adjustment accuracy, unsafe construction process, complicated and inconvenient operation, etc., and achieve the goal of adjusting angle High differential precision, simple and convenient operation, and the effect of reducing risks

Active Publication Date: 2016-03-30
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the disadvantages of the existing way of adjusting the angle difference, such as low strength, low angle difference adjustment accuracy, complicated and inconvenient operation, hot work such as welding on the well site, and unsafe construction process.

Method used

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  • Multilateral well angular difference adjustment tool and angular difference adjustment method thereof
  • Multilateral well angular difference adjustment tool and angular difference adjustment method thereof
  • Multilateral well angular difference adjustment tool and angular difference adjustment method thereof

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Embodiment Construction

[0017] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, a branch well angle difference adjustment tool includes an upper joint 1, a jacket 2 and a lower pipe string connection joint 6; it also includes 3 reversing sleeves 3, and 20 reversing sleeves 3 are processed at two ends at equal angles For splines or face teeth, there is an angle difference between the center line of the concave part of the female end of the reversing sleeve 3 and the center line of the convex part corresponding to the male end in the counterclockwise direction. The reversing sleeve 3 can be designed with 5 angle differences, namely 0°, 1°, 2°, 5°, 10°; Any integer angle difference from 0° to 17° can be obtained through the combination of three reversing sleeves 3. The outer wall of the lower end of the upper joint 1 is connected with the outer wall of the outer shell 2, and the three reversing sleeves 3 are sequentially engaged and installed in the outer shell 2. The upper end of the up...

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Abstract

The invention relates to the technical field of drilling and completion of a multilateral well, in particular to a multilateral well angular difference adjustment tool and an angular difference adjustment method thereof. The multilateral well angular difference adjustment tool comprises three reversing sleeves. The circumference of two ends of each reversing sleeve is processed with 20 splines or end face teeth at an equal angle. The angular difference exists between a center line of the concave portion of the female end of the reversing sleeve and a center line of the convex portion corresponding to the male end in the counter-clockwise direction. The reversing sleeve can be designed to be 5 angular differences, namely, 0 degree, 1 degree, 2 degrees, 5 degrees and 10 degrees. According to the multilateral well angular difference adjustment tool, the anti-twisting property of a whole tubular column of the multilateral well is improved after the angular difference adjustment, the adjustment precision of the angular differences and the strength are high, the multilateral well angular difference adjustment tool is simple and convenient to operate, hot work of well site welding is avoided, and risks in the construction processes of the multilateral well are reduced.

Description

Technical field: [0001] The invention relates to the technical field of branch well drilling and completion, in particular to a branch well angle difference adjustment tool and an angle difference adjustment method thereof. Background technique: [0002] The drilling and completion operation of lateral wells can be roughly divided into two parts, one is directional casing opening, and the other is directional running of completion strings in lateral wells. In the four-level lateral well drilling and completion system, the window opening process includes the following work links: (1) go down the downhole reference platform, and measure the orientation of the lower directional sleeve; (2) adjust the whipstock according to the orientation of the window opening The angle difference between the inclined surface and the upper directional sleeve is lowered into the whipstock. When the upper and lower directional sleeves are engaged, the position facing the inclined surface of the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B29/06E21B7/08
CPCE21B7/067E21B29/06
Inventor 张宗仁尚宪飞李敏严仁田陈振刚吴宁张雪赵展王有慧孔庆涛李雅南菜子恒刘宇李庆乐
Owner BC P INC CHINA NAT PETROLEUM CORP
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