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Auxiliary device, continuous circulation drilling system and drilling method thereof

An auxiliary device and drilling technology, applied in wellbore/well components, earth-moving drilling, flushing wellbore, etc., can solve the problems of reducing downhole drill string downtime, sticking and sticking, etc., to prevent sticking and sticking, reduce Stop time, effect of continuous loop

Active Publication Date: 2020-06-19
CHINA UNIV OF PETROLEUM (EAST CHINA) +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of sticking and stuck pipe in the prior art, and provide an auxiliary device, which can greatly reduce the stoppage time of the downhole drill string when connecting the column, so as to prevent sticking and sticking purpose of such questions

Method used

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  • Auxiliary device, continuous circulation drilling system and drilling method thereof
  • Auxiliary device, continuous circulation drilling system and drilling method thereof
  • Auxiliary device, continuous circulation drilling system and drilling method thereof

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Embodiment Construction

[0042] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0043] In the present invention, unless stated to the contrary, the used orientation words such as "up, down, left, right, top, bottom" usually refer to the directions shown in the drawings or refer to vertical, The term used to describe the mutual positional relationship of the components in the vertical or gravity direction. In addition, "inside and outside" means inside and outside with respect to the outline of each member itself. In addition, "plurality" referred to in the present invention means two or more and includes two.

[0044] In order to clearly understand the present invention, here we first analyze the continuous circulation drilling system in ...

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Abstract

The invention relates to the technical field of drilling and discloses an auxiliary device and a continuous circulation drilling system and method. The auxiliary device comprises a shell (10) and a drilling liquid supplying assembly. The first end of the shell (10) is provided with a connector (11) used for being connected with the drilling liquid supplying assembly, and a hollow shaft (20) is rotatably arranged in the shell (10). The hollow part of the hollow shaft (20) communicates with the connector (11) and penetrates out of the second end of the shell. The portion, penetrating out of theshell (10), of the hollow shaft (20) is provided with a connecting part (21) used for being connected with a circulation short joint of the continuous circulation drilling system. By utilizing the auxiliary device provided by the invention, when the continuous circulation drilling system conducts lateral circulation vertical column connection, continuous circulation of drilling liquid can be ensured, the rotation stopping time of a down-hole drill column can also be reduced greatly, and thus the problems such as adhering and drill jamming are prevented.

Description

technical field [0001] The invention relates to drilling technology, in particular to an auxiliary device, a continuous circulation drilling system and a drilling method thereof. Background technique [0002] Drilling is to use mechanical equipment and related technologies to drill the strata into cylindrical holes with a certain depth from the surface to the ground. With the development and progress of oil and gas drilling technology, operators can drill various technically difficult wells such as deep wells, ultra-deep wells, horizontal wells, extended-reach wells, and multi-bottom wells by applying new drilling technologies. For example, offshore drilling from shallow water to deep water and ultra-deep water has achieved great results. [0003] Among them, during the drilling process, in order to maintain a stable wellbore pressure, and also to solve a series of abnormal problems caused by stopping the mud circulation in the well during the make-up, breakout and tripping...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B21/00E21B21/10
CPCE21B21/00E21B21/10
Inventor 孙宝江刘强张武辇贾银鸽许亮斌殷志明刘书杰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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