Insulation short section for electromagnetic wave measurement while drilling system

An insulation pup joint and measurement-while-drilling technology, applied in drill pipe, drill pipe, earth-moving drilling, etc., can solve the problems of easily damaged insulation sealant, large extrusion force, insulation failure, etc., to ensure insulation and structure. Simple and stable results

Pending Publication Date: 2019-12-13
上海达坦能源科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thread is easy to tighten when it is subjected to torque during drilling, which will generate a large extrusion force and easily damage the insulating sealant in the thread gap, resulting in insulation failure

Method used

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  • Insulation short section for electromagnetic wave measurement while drilling system
  • Insulation short section for electromagnetic wave measurement while drilling system
  • Insulation short section for electromagnetic wave measurement while drilling system

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0028] Such as figure 1 As shown, an insulating sub for an electromagnetic wave measurement while drilling system includes an insulating sub body 3 and a first protective joint 1 and a second protective joint 4 respectively arranged at both ends of the insulating sub body 3, the first protective joint 1 and the second protective joint 4 The inner wall of the second protective joint 4 is provided with a compression locking mechanism 2, the outer surface of the insulating nipple body 3 is provided with an inner wear-resistant insulating material layer 301, and the outer surface of the inner wear-resistant insulating material layer 301 is provided with an outer wear-resistant Grinding the insulating material layer 302, the inner wear-resistant insulating material layer 301 and the outer wear-resistant insulating material layer 302 are all prior art, the inner wear-resistant insulating material layer 301 can adopt wear-resistant ceramic insulating material but not limited thereto, ...

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PUM

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Abstract

The invention relates to an insulation short section for an electromagnetic wave measurement while drilling system. The insulation short section comprises an insulation short section body and a firstprotection joint and a second protection joint arranged at the two ends of the insulation short section body correspondingly, wherein a compression locking mechanism is arranged on the inner wall of the first protection joint and the inner wall of the second protection joint; and the compression locking mechanism comprises a plastic ring, a compression chamber arranged in the plastic ring, and a storage rod fixedly connected to the bottom end of the compression chamber. According to the insulation short section for the electromagnetic wave measurement while drilling system, the compression locking mechanism is additionally arranged at the connection between the protection joints and the insulation short section body, when the protection joints are connected with the insulation short section, the whole compression locking mechanism can be compressed, the compression locking mechanism blocks the gap between the protection joints and the insulation short section after the compression locking mechanism is subjected to force deformation, and the sealing performance is guaranteed; and meanwhile, a reset spring in the compression locking mechanism provides a certain reverse acting force,so that the pressure between threads does not become larger along with rotation, and the stability between the protection joints and the insulation short section is ensured.

Description

technical field [0001] The invention belongs to the field of geological and mineral drilling, and in particular relates to an insulating short joint for a large electromagnetic wave measurement-while-drilling system. Background technique [0002] During oil drilling and geological drilling, especially in directional wells and horizontal wells, it is necessary to obtain in-hole drilling parameters, geological parameters and wellbore trajectory in time to provide decision-making basis for field engineers. Measurement while drilling refers to the measurement method that obtains the drilling parameters (vertex angle, azimuth angle, tool face angle, etc.) near the drill bit through downhole sensors and transmits these parameters to the surface in real time during the drilling process. [0003] Measurement while drilling can be divided into wired measurement while drilling and wireless measurement while drilling according to the transmission medium of information. Wired MWD can r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/13E21B17/02
CPCE21B17/02
Inventor 向长树
Owner 上海达坦能源科技股份有限公司
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