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Rotary steerable system and rotary steerable executor for drilling

A rotary steering and actuator technology, applied in directional drilling and other directions, can solve problems such as loss of steering angle and difficult control, and achieve the effect of improving steering accuracy and ensuring normal steering.

Inactive Publication Date: 2010-05-12
北京中联博韬科技咨询有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the number of hydraulic cylinders and pistons of existing rotary steerable tools is limited, when a certain hydraulic cylinder fails, it is easy to lose a certain steering angle and the steering is difficult to control. Steering actuator, the rotary steerable system used in oilfield drilling can not only safely and reliably carry out all-round, continuous, accurate and automatic control of the well trajectory in directional drilling construction, but also the precise indexing is not affected by the mud performance

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing:

[0021] attached by figure 1 combine figure 2 , image 3 As shown, the drilling rotary steerable system of the present invention includes at least three rotary steerable actuators fixedly installed in the drill 1, and the at least three rotary steerable actuators are distributed from bottom to top, that is to say, the The above-mentioned at least three rotary steerable actuators are arranged in the circumferential direction in the drill jack 1, and there is also a longitudinal (that is, the axial direction of the drill jack) interval between each rotary steerable actuator. Preferably, 3, 4, or 6 rotary guide actuators of the present invention are fixedly installed in the drill jack 1, figure 2 Shown is the case with 4 rotary steerable actuators. In the present invention, according to the needs of design and construction, each actuator can be evenly arranged in the circ...

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Abstract

The invention discloses a rotary steerable system and a rotary steerable executor for drilling, which are used for solving the problems that the numbers of hydraulic cylinders and pistons are limited and the steering is not easy to control in the conventional rotary steerable tool. The rotary steerable system of the invention comprises at least three rotary steerable executors fixedly arranged ina drill collar (1); and the at least three rotary steerable executors are distributed in the circumferential direction from the top to bottom. The rotary steerable executor of invention comprises a hydraulic executing module, a lead wire seal module, and an electromagnetic valve module used for controlling a fluid to enter and exit a piston cavity (27); the lead wire seal module is fixed on a sealing cover (19) and comprises a connecting plug (24); and a lead wire is connected with the electromagnetic valve module through the connecting plug (24) in a sealing mode. The rotary steerable systemand the rotary steerable executor for drilling can perform all-around continuous precise automatic control on a wellbore trajectory safely and reliably, and has no influence on accuracy indexing caused by mud property.

Description

Technical field: [0001] The invention relates to a rotary steerable tool used for drilling directional wells in the oil field drilling field, in particular to a rotary steerable system and a rotary steerable actuator for oil field drilling. Background technique: [0002] With the development of oilfields and the continuous development of technology, directional drilling technology is one of the most advanced drilling technologies in the field of oil exploration and development in the world today. Directional drilling is to drill the wellbore to reach the target layer along the pre-designed well deviation and azimuth. method. It is a drilling technology that effectively controls the wellbore trajectory by special downhole tools, measuring instruments and technology, so that the drill bit can drill in a specific direction to reach the predetermined underground target. Directional well technology can economically and effectively develop oil and gas resources with limited surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04
Inventor 金峰文磊陈远东
Owner 北京中联博韬科技咨询有限公司
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