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Gas-lift valve stem stroke measurer and measurement method

A measuring device and gas lift valve technology, applied in the field of sensors, can solve problems such as the inability to automatically perform gas lift valve probe ranging tests

Active Publication Date: 2016-11-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two typical structure types of gas lift valve test devices are unable to automatically perform gas lift valve probe ranging tests

Method used

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  • Gas-lift valve stem stroke measurer and measurement method
  • Gas-lift valve stem stroke measurer and measurement method
  • Gas-lift valve stem stroke measurer and measurement method

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Embodiment Construction

[0031] 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. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] figure 2 It is a structural schematic diagram of an embodiment of the gas lift valve stem stroke measuring device of the present invention. Such as figure 2 As shown, the gas lift valve stem stroke measurement device provided in this embodiment may include: a probe assembly, a first connecting piece 301 and a transformer assembly;

[0...

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Abstract

The invention provides a gas-lift valve stem stroke measurer and a measurement method. The device comprises a probe assembly, a transformer assembly and a first connection member connecting the probe assembly with the transformer assembly, wherein the probe assembly comprises a probe sleeve, a probe, a plug, a second connection member and an elastic part, and the transformer assembly comprises a transformer and a transformer sleeve. According to the measurement method, in a gas-lift valve stem movement process, the probe under the action of the elastic part continuously pushes a valve ball to move because of continuous and slow pressure change, the probe is kept to contact with the valve ball, so the stroke data of a stem can be acquired through measuring the stroke data of the probe; the probe assembly is connected with the transformer assembly, so the stroke data of the probe can be directly outputted through the transformer, and data support is automatically provided for gas-lift valve probe distance measurement tests.

Description

technical field [0001] The invention relates to a sensor technology, in particular to a device and method for measuring the stroke of a gas lift valve stem. Background technique [0002] The gas lift valve is the most important downhole tool in the gas lift production process, and its working performance directly determines the success or failure of the gas lift production process. The gas lift valve probe distance measurement test is one of the main tests used to detect the performance of the gas lift valve bellows. Usually, the gas lift valve bellows assembly load rate can be determined through the gas lift valve probe distance measurement test, that is, the gas lift valve. Valve stiffness, testing the cracking pressure and maximum effective stem travel of gas lift valves. [0003] During the gas lift valve probe ranging test, the test pressure is taken as the ordinate, and the gas lift valve stem stroke is taken as the abscissa, and two smooth line scatter curves about "...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01B21/02
Inventor 李勇成志强王景礼王志超唐安达方志刚齐韦林
Owner PETROCHINA CO LTD