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Downhole solid sampler for oil-gas well

A technology for oil and gas wells and samplers, which is applied to sampling devices and other directions, can solve problems such as difficulty in running or taking out, and achieve the effect of convenient taking out.

Active Publication Date: 2020-04-03
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned defects in the prior art, the object of the present invention is to provide a solid sampler for oil and gas wells. The defect that it is difficult to insert or take out the standard sampling, and it is convenient to carry out the sampling operation

Method used

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  • Downhole solid sampler for oil-gas well
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  • Downhole solid sampler for oil-gas well

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0034] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertic...

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Abstract

The invention provides a downhole solid sampler for an oil-gas well. The sampler comprises a body and an upper joint which are fixedly connected, a sand containing chamber used for containing sand andstone is arranged in the body, the body is conical, and the horizontal section area of the body is gradually decreased in a direction away from the upper joint. According to the present invention, the body is conical, and the horizontal cross section area of the body is gradually reduced in the direction away from the upper joint, so that one end of the oil gas well under the body can easily crack the underground sand or scale, the underground sand or scale can be conveniently collected into the sand containing chamber, and the samples can be taken out conveniently after being sampled.

Description

technical field [0001] The invention relates to oil and gas production technology, in particular to an oil and gas well downhole solid sampler. Background technique [0002] In the process of oil and gas production, oil and gas wells are often accompanied by sanding or scaling after a period of production. For oil and gas wells with special stratum structures, sanding or scaling are especially serious. The root cause of sand production or scaling is that the excessive production pressure difference makes the sandstone oil and gas layer rock cementation loose, and the formation sand flows into the wellbore. Sanding or fouling will wear the pump barrel and plunger, reduce pump efficiency, and even damage the oil production pump, resulting in production reduction or shutdown of oil and gas wells. [0003] In production operations, in order to fully understand the root cause of sanding or scaling in each oil and gas well, and accurately formulate prevention and control measures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/08
CPCG01N1/08
Inventor 凌涛王洪峰朱松柏何赟刘杨何光芒聂延波王胜军王小培王景辰
Owner PETROCHINA CO LTD