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Electrically-controlled anchoring setting type efficient sampling system

A sampling system and electronic control technology, applied in the field of sampling systems, can solve problems such as sample pollution, repeated fishing, low efficiency of putting in work, and restrictions on the development of downhole sampling, so as to achieve accurate and reliable judgment, reduce the number of fishing times, and ensure reliability. Effect

Pending Publication Date: 2021-12-03
哈尔滨工业大学重庆研究院 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Downhole sampling often requires only one layer of tubing to be sampled in a single trip. When it is used in oil wells with multiple sections, it needs to be repeatedly salvaged, and the work efficiency is extremely low. In addition, there are serious sample contamination problems in downhole sampling. These problems Both limit the further development of downhole sampling

Method used

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  • Electrically-controlled anchoring setting type efficient sampling system

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Embodiment approach

[0020] An electronically controlled anchor setting high-efficiency sampling system, including two electronically controlled anchor setting tools 3, a micro drainage pump 4, an electronically controlled sampler 5, an electronically controlled switch valve 6, and a magnetic positioning depth correction mechanism 7 A tool string assembled on the ground; and a single-core cable 2; and a logging vehicle 1 including a ground control system, wherein the two electrically controlled anchoring and setting tools 3 are respectively located at both ends of the tool string,

[0021] Among them, the logging vehicle 1 implements the launching and salvage of the single-core cable 2, and is responsible for the action control and signal processing of each component of the system.

[0022] Among them, the single-core cable 2 plays the role of supplying power to system components, realizing signal transmission between the surface and underground, and pulling the system.

[0023] Among them, the el...

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Abstract

The invention relates to a sampling system, and particularly relates to an electrically-controlled anchoring setting type efficient sampling system. The electrically-controlled anchoring setting type efficient sampling system comprises a tool string, a single-core cable and a logging truck, wherein the tool string is formed by assembling two electrically-controlled anchoring setting tools, a miniature liquid discharging pump, an electrically-controlled sampler, an electrically-controlled switch valve and a magnetic positioning depth correcting mechanism on the ground; the logging truck comprises a ground control system; and the single-core cable plays a role in supplying power to system components, realizing signal transmission between the ground and the underground and pulling the system. According to the electrically-controlled anchoring setting type efficient sampling system disclosed by the invention, the tool string is pulled by the cable to move underground, the aim of sampling multiple layers of sections by descending the well for one time can be realized by the electrically-controlled sampler comprising multiple storage units, the throwing and fishing times are reduced, and the sampling efficiency is increased.

Description

technical field [0001] The invention relates to a sampling system, in particular to an electronically controlled anchor setting type high-efficiency sampling system. Background technique [0002] As the downhole production time of oil wells is getting longer and longer, the changes in well conditions are becoming more and more complex, and the analysis of downhole working conditions is becoming more and more important; in addition, the application of new technologies also needs to collect downhole characteristic changes to carry out Evaluation, therefore, the need for downhole fluid sampling is becoming more and more urgent. The simplest method is to carry out surface sampling. In order to further improve efficiency and reduce costs, surface sampling is gradually improved to downhole sampling. Downhole sampling often requires only one layer of tubing to be sampled in a single trip. When it is used in oil wells with multiple sections, it needs to be repeatedly salvaged, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/08E21B47/06E21B47/07E21B23/01E21B23/14
CPCE21B49/082E21B49/081E21B47/06E21B47/07E21B23/01E21B23/14
Inventor 宋文平乔健鑫王俊松沈田丹曹雄科范德楠李叶鹏强焱董立超扬晨辉杨华代辉周进崔萌
Owner 哈尔滨工业大学重庆研究院
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