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Underground fixed liquid level testing device

A test device and fixed technology, applied in construction and other directions, can solve problems such as inability to test liquid level, and achieve the effect of satisfying marine safety production and continuous testing

Pending Publication Date: 2015-07-15
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a downhole fixed liquid level testing device, which can realize the continuous testing of the oil well liquid level, and can meet the requirements of offshore safety production; can solve the problem that the offshore electric pump well cannot test the liquid level due to the installation of cable packers current situation

Method used

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Embodiment Construction

[0014] The detailed description and technical content of the present invention are described below with the accompanying drawings, but the accompanying drawings are only provided for reference and description, and are not intended to limit the present invention.

[0015] Such as figure 1 As shown, the downhole fixed liquid level testing device includes a downhole instrument and a ground control box. The downhole instrument mainly includes a sounding device and a data acquisition device. The ground control box mainly includes a control ground computer terminal 1 and a nitrogen cylinder; The sounding device connected to the downhole instrument through the gas pipeline 3 makes sound in the well, and the data acquisition device includes an acoustic sensor 7, a pressure sensor 8, and a core control circuit 6 arranged in the well, and the acoustic sensor and the pressure sensor are respectively connected with The core control circuit is connected, and the core control circuit accept...

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Abstract

The invention discloses an underground fixed liquid level testing device. The underground fixed liquid level testing device comprises an underground instrument and a ground control box, wherein the underground instrument mainly comprises a sounding device and a data acquiring device; the ground control box mainly comprises a ground computer terminal and a nitrogen bottle; the nitrogen bottle is connected to the sounding device of the underground instrument through a gas pipe for sounding in a well; the data acquiring device comprises a sound sensitive sensor, a pressure sensor and a core control circuit arranged in the well; the sound sensitive sensor and the pressure sensor are connected with the core control circuit; the core control circuit receives and stores data acquired by the sound sensitive sensor and the pressure sensor; and the core control circuit is connected with the ground computer terminal through an optical cable. The underground fixed liquid level testing device can realize continuous testing of a liquid level in an oil well, can satisfy the requirements of maritime safety production, and can solve the current situation of incapability of testing the liquid level due to the installation of a cable packer in a maritime electric pump well.

Description

technical field [0001] The invention relates to an oil well dynamic liquid level detection technology, in particular to an underground fixed liquid level test device. Background technique [0002] Oil well dynamic liquid level detection is a regular work in the process of oil well production to grasp the production dynamics of the oil well. Only by correctly measuring the oil level depth of the oil well can the liquid supply capacity of the oil well be grasped and a reasonable oil well work system can be formulated. [0003] Because the offshore oil production technology is different from that on land, one of the differences between offshore oil well electric pump production strings and land oil wells is that offshore oil wells have to be run through cable packers, which are essential downhole tools to ensure safe offshore production. Since the oil casing annular space is sealed by the cable packer (about 120 meters downhole), the conventional test method cannot be applied t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/047
CPCE21B47/047
Inventor 曾凡春谷开昭李加波安百新丛娟陈玫玫李小军刘玉国黄辉才张雪梅
Owner CHINA PETROLEUM & CHEM CORP
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