Guiding well drilling device

A steerable drilling and drill bit technology, applied in directional drilling, drilling equipment, automatic control systems for drilling, etc., can solve the problems of poor electrical connection stability, prone to failure, difficult to adapt to the downhole environment, etc. The effect of ensuring structural stability and integrity and reducing downhole engineering risks

Pending Publication Date: 2022-04-22
CHINA PETROLEUM & CHEM CORP +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this electrical connection is less stable and difficult to adapt to the downhole environment, so it is prone to failure

Method used

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  • Guiding well drilling device
  • Guiding well drilling device
  • Guiding well drilling device

Examples

Experimental program
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Embodiment Construction

[0025] The present invention is introduced below by accompanying drawing.

[0026] Such as figure 1As shown, the steerable drilling device 100 includes an outer cylinder 110 and a central shaft 170 sheathed in the outer cylinder 110 . Both the outer cylinder 110 and the central shaft 170 are arranged along the longitudinal axis, and the central shaft 170 is centered relative to the outer cylinder 110 .

[0027] The upper end of the central shaft is rotatably supported on the inner wall of the outer cylinder 110 through the upper end connecting mechanism 120 , and the lower end is rotatably supported on the inner wall of the outer cylinder 110 through the lower end connecting mechanism 140 .

[0028] figure 2 The detailed structure of an embodiment of the upper connection mechanism 120 is schematically shown. The upper connection mechanism 120 includes a first cylinder 121 sleeved in the outer cylinder 110 and extending along the longitudinal axis. The first cylinder 121 i...

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Abstract

The invention provides a steerable drilling device. The steerable drilling device comprises an outer barrel extending along a longitudinal axis; the drill bit connector is inserted into the outer cylinder, and the lower end of the drill bit connector extends out of the lower end of the outer cylinder and is used for being connected with a drill bit; and the joint driving mechanism is arranged in the outer barrel and is configured to be used for driving the drill bit joint to swing relative to the longitudinal axis. The device further comprises a lower end connecting mechanism which comprises a connecting main body connected with the joint driving mechanism, so that the joint driving mechanism cannot rotate relative to the connecting main body; the first righting frame is arranged between the connecting main body and the outer cylinder, and the connecting main body is rotationally connected with the first righting frame; the circuit system is arranged in the connecting main body and is configured to be used for providing an electric signal for the joint driving mechanism; the attitude sensor is arranged in the connecting main body; wherein the circuit system can provide an electric signal to the joint driving mechanism through an electric wire extending in the connecting main body and the joint driving mechanism.

Description

technical field [0001] The invention relates to the field of petroleum drilling engineering, in particular to a steering drilling device. Background technique [0002] During the drilling process of horizontal wells and deviated wells, a steering drilling device is usually required to change the drilling direction of the drill bit, so as to realize the function of real-time control of the drilling trajectory. [0003] Existing steering drilling device mainly includes two kinds, and a kind of is pushing type guiding device, and another kind is pointing type guiding device. [0004] A common push-to-type steering device is configured with a push-to-piston that can protrude toward the well wall at the side of the drill string. Changes in the position and orientation of the drill bit are caused by the force of the piston pushing against the borehole wall. This kind of push-by guide device and the drill string itself cannot rotate, so the engineering risk in the downhole is rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B7/08E21B3/02E21B44/00E21B47/022E21B17/10
CPCE21B7/04E21B7/061E21B3/02E21B44/00E21B47/022E21B17/10E21B7/06E21B7/067E21B17/05E21B41/0085
Inventor 马清明朱杰然杨宁宁李光泉王锡洲李玉凤林楠唐海全杜海洋鲁超
Owner CHINA PETROLEUM & CHEM CORP
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