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a drilling method

A drilling and drilling tool assembly technology, applied in the field of drilling, can solve the problems of high cost and increased drilling cycle, and achieve the effects of low production cost, high drilling efficiency and avoiding long drilling cycle

Active Publication Date: 2019-01-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is more advanced, but the cost is relatively high
After the orientation is completed, when the rotary steerable tool needs to be taken out, a tripping operation is required, which increases the drilling cycle

Method used

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with accompanying drawing.

[0040] figure 1 A schematic diagram of drilling according to the invention is shown. Such as figure 1 As shown, the drilling method includes the following steps: Step 1: monitor the drilling process; Step 2: drive the downhole drilling tool assembly 200 to turn to facilitate the adjustment of the tool face angle when orientation or adjustment of the wellbore trajectory is required; Step 3: Or after adjusting the wellbore trajectory and finishing drilling, drive the downhole drilling tool assembly 200 to reset.

[0041] Such as figure 2 As shown, a downhole drilling tool assembly 200 used in the drilling method includes a coiled tubing joint 92 , a downhole measurement tool 93 , a directional tool 94 and a directional drilling device 100 . Wherein, the coiled tubing joint 92 is used to connect with the coiled tubing 91 . The downhole measurement tool 93 is used for con...

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PUM

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Abstract

The invention provides a well drilling method. The well drilling method comprises the following steps that S1, the drilling process is monitored; S2, when orientation or adjustment of a well track is needed, a down-hole drilling assembly is driven to steer to promote adjusting of a tool face angle; and S3, after directional drilling or well track-adjusted drilling, the down-hole drilling assembly is driven to reset. By utilizing the well drilling method, the well drilling efficiency can be improved, and meanwhile the well drilling quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to a drilling method. Background technique [0002] With the continuous innovation and improvement of coiled tubing drilling equipment, downhole tools and coiled tubing for drilling, and the combination of coiled tubing with underbalanced drilling technology and managed pressure drilling technology, the coiled tubing drilling technology has been greatly improved. The advantages of old well re-entry, slim hole drilling, directional well and sidetracking are more obvious. [0003] At present, due to the large frictional resistance caused by the friction between the coiled tubing and the wellbore, the pressure on the bit applied by the coiled tubing is limited, making the drilling efficiency low, and even some drilling operations cannot be realized. The drilling effect can be improved by adopting high-pressure water jet rock-breaking technology, but the current radial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/04E21B7/10
CPCE21B7/04E21B7/10
Inventor 王敏生光新军赵阳闫娜
Owner CHINA PETROLEUM & CHEM CORP