Oil well working fluid level measuring device and method

A technology of depth measurement and dynamic liquid level, which is used in measurement, earth-moving drilling and production, wellbore/well components, etc. It can solve the problems of low authenticity of measurement values ​​and undetectable liquid level echoes, and achieves easy automatic control, The effect of avoiding signal attenuation and facilitating maintenance

Active Publication Date: 2015-03-04
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

However, the echo method may fail to detect the liquid level echo or the authenticity of the measured value is low when the fluid level of the oil well exceeds 2000m or is affected by factors such as a foam layer. Therefore, a method suitable for long pipelines is required. Device and method for measuring oil well dynamic liquid level depth with high measurement accuracy

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  • Oil well working fluid level measuring device and method
  • Oil well working fluid level measuring device and method
  • Oil well working fluid level measuring device and method

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Embodiment Construction

[0027] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] See attached figure 1 , an oil well dynamic liquid level depth measurement device, including a sound source generating module, a signal receiving module and a signal processing module, the sound source generating module is used to send a limited bandwidth sound source signal; the signal receiving module is used to receive the The sound signal reflected by the moving liquid surface of the oil well is A / D converted into a sound digital signal; the signal processing module is used for data reading and analysis; the sound source generation module includes a control unit and an infrasound generation unit, The infrasound generating unit is provided with an air chamber 3, such as figure 2 As shown, one end of the air chamber 3 is connected to the air inlet of the horn 1 through a connecting piece 2...

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Abstract

The invention discloses an oil well working fluid level measuring device and method. The device comprises a sound source generating module, a signal receiving module and a signal processing module. The sound source generating module includes a control unit and an infra-sound generating unit. One air chamber is arranged inside the infra-sound generating unit, with one end connected to an air inlet of a horn by a connecting piece; a piston is also installed inside the air chamber, and the piston rod of the piston extends out from the other end of air chamber and is then connected with an expansion link of a linear motor through a connecting sleeve. The linear motor drives the piston to do push-pull movement in the air chamber under the control of the control unit. The beneficial effects of the device are as follows: 1) the high measuring precision can effectively prevent measuring error caused by bubbles, temperature, moisture, etc.; 2) infra-sound is adopted to be the sound source so that the signal attenuation is prevented, and the device is suitable for long pipes and large sound-resistance; 3) the device is small in size and convenient for automatic control.

Description

technical field [0001] The invention relates to the technical field of oil well dynamic liquid level depth detection, in particular to an oil well dynamic liquid level depth measurement device and method. Background technique [0002] In the process of oil exploitation, by detecting the depth of oil well dynamic liquid level, we can scientifically understand the supply capacity of oil wells, which can not only reflect the liquid supply capacity of oil wells, but also determine the immersion depth of oil production pumps, and it is important to formulate a scientific and reasonable work system for oil production wells parameter. At the same time, parameters such as reservoir pressure, oil production index and effective permeability can be calculated, which is of great significance for analyzing the causes of abnormal energy attenuation in reservoirs, optimizing production planning, and ensuring the safe operation of oil production equipment. [0003] At present, the relative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/047
CPCE21B47/047E21B47/16
Inventor 周伟刘娟李太福易军辜小花刘兴华张元涛周盼
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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