Step-by-step air return and exhaust lift valve debugging test bed and inflation test and pressure adjustment method

A test bench and pressure technology, which is applied in the direction of mechanical valve testing, fluid pressure control, electric fluid pressure control, etc., can solve the problems of difficult data acquisition of gas lift valves, and achieve the effect of quick action and high precision

Active Publication Date: 2020-04-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are problems in the step-by-step gas lift flowback process, and the difficulty in obtaining data such as the opening pressure of the gas lift valve. There is an urgent need for a standardized test operation platform for system inflation and debugging.

Method used

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  • Step-by-step air return and exhaust lift valve debugging test bed and inflation test and pressure adjustment method
  • Step-by-step air return and exhaust lift valve debugging test bed and inflation test and pressure adjustment method
  • Step-by-step air return and exhaust lift valve debugging test bed and inflation test and pressure adjustment method

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Experimental program
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Effect test

Embodiment 1

[0073] Ken 71X211 is a newly commissioned well in the old area of ​​Xiaguantao Formation of Kenxi Oilfield. The oil reservoir is buried at a depth of 1630 meters. Due to years of exploitation in the formation, the pressure drop has been relatively large, from the original 14.9Mpa to the current 8.6MPa. Due to low formation pressure, mud invaded during the drilling process, causing serious formation pollution. In order to remove the mud blockage and improve the plugging removal effect, the gas lift flowback blockage removal process is adopted

[0074] Such as figure 2 The structure shown: Gas lift valves are installed at different depths of the pipe string according to the cloth valve design. The working principle is to inject nitrogen gas from the oil casing annulus, open the switch through the gas lift valve, enter the oil pipe, and lift the fluid in the pipe to the surface step by step, so that the bottom hole pressure gradually decreases, the flowback pressure difference ...

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Abstract

The invention relates to a step-by-step air return and exhaust lift valve debugging test bed, which comprises a nitrogen passage, and a nitrogen booster pump, a first pressure transmitter, a pressurereducing valve, a first pneumatic high-pressure ball valve, a second pneumatic high-pressure ball valve, a second pressure transmitter, an inflation valve and an opening valve which are sequentially communicated on the nitrogen passage through air pipelines, wherein the inflation valve and the opening valve are connected with gas-lift valves in parallel; a two-position five-way electromagnetic valve A, a two-position five-way electromagnetic valve B and a two-position three-way electromagnetic valve are connected with an air outlet of an air booster pump in parallel, the two-position five-wayelectromagnetic valve A is connected with the first pneumatic high-pressure ball valve, and the two-position five-way electromagnetic valve B is connected with the second pneumatic high-pressure ballvalve; an air driving pipeline is communicated with the air booster pump and an air inlet interface of the nitrogen booster pump and is provided with a pressure regulating valve; and a transmitter andthe electromagnetic valves are connected with a computer through control signal lines. The experiment table can be used for more accurately testing and adjusting the inflation and opening pressure ofthe valve cores of the gas-lift valves.

Description

technical field [0001] The invention relates to a step-by-step return gas lift valve debugging test bench and an inflation and pressure test adjustment method, belonging to the technical field of gas lift return. Background technique [0002] When a new well is put into production, one of the key processes is to discharge the pollutants produced in the oil layer during drilling and perforating, so as to dredge the communication channel between the oil layer and the wellbore and protect the reservoir. At present, there are problems in the step-by-step gas lift flowback process, and the difficulty in obtaining data such as the opening pressure of the gas lift valve. There is an urgent need for a standardized test operation platform for system inflation and debugging. Contents of the invention [0003] The present invention aims to solve the above-mentioned technical problems by providing a step-by-step back-exhaust lift valve debugging test bench and its inflation and openin...

Claims

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Application Information

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IPC IPC(8): G01M13/003G05D16/20
CPCG01M13/003G05D16/2013
Inventor 张岩郭京来王志刚张清波乐春蕾郭翔宇任贵生
Owner CHINA PETROLEUM & CHEM CORP
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