Experimental device and method for evaluating erosion resistance of check valve of arrow-shaped drilling tool under condition of simulating internal spraying of gas well drilling tool

An experimental device, check valve technology, applied in the direction of mechanical valve testing, etc., can solve the problem of no arrow-shaped drilling tool check valve erosion performance evaluation research, no study of safety grabbing operation time, and inability to simulate mixing and continuous spraying Erosion arrow drill tool check valve and other problems

Active Publication Date: 2020-12-15
CHINA PETROLEUM & CHEM CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The erosion test device provided by the above patents mainly focuses on the single-point erosion method of the material coupon by using high-pressure fluid, but there is no overall erosion performance evaluation research for the arrow-shaped drilling tool check valve, and it is impossible to simulate The working condition of the drilling fluid and downhole gas mixed from the drill pipe and continuously sprayed out to erode the arrow-shaped drill tool check valve when the gas well drilling tool is blown out
It can be seen that there is currently no experimental device for evaluating the anti-erosion performance of the arrow-shaped drilling tool check valve under the condition of gas well internal injection, and it is impossible to determine the arrow-shaped drilling tool check valve caused by different splicing times under different internal injection conditions. The impact of valve erosion on the blowout prevention performance of the arrow-shaped drilling tool check valve has not been studied to obtain the safe grabbing operation time

Method used

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  • Experimental device and method for evaluating erosion resistance of check valve of arrow-shaped drilling tool under condition of simulating internal spraying of gas well drilling tool
  • Experimental device and method for evaluating erosion resistance of check valve of arrow-shaped drilling tool under condition of simulating internal spraying of gas well drilling tool

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Experimental program
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Effect test

Embodiment 1

[0059] Such as figure 2 As shown, an experimental method for evaluating the anti-erosion performance of arrow-shaped drilling tool check valve under the condition of simulating gas well drilling tool internal injection, using the above-mentioned experimental device, includes the following steps:

[0060] (1) According to the drilling status of the experimental target block, the corresponding experimental drilling fluid is prepared and placed in the mud storage tank 1, and the prepared density is 1.9g / cm 3 The experimental drilling fluid was placed in the mud storage tank 1 and the agitator 18 was turned on to prevent the drilling fluid from consolidating. The electric heating jacket 23 was installed and adjusted to 80°C to preheat the drilling fluid for 3 hours, and the agitator 18 was turned on to prevent the drilling fluid from solidifying. Liquid solidification, the electric heating jacket 23 is installed on the outside of the mud storage tank 1, and the drilling fluid is ...

Embodiment 2

[0071] Such as figure 2 As shown, an experimental method for evaluating the anti-erosion performance of arrow-shaped drilling tool check valve under the condition of simulating gas well drilling tool internal injection, using the above-mentioned experimental device, includes the following steps:

[0072] (1) According to the drilling status of the experimental target block, the corresponding experimental drilling fluid is prepared and placed in the mud storage tank 1, and the prepared density is 1.9g / cm 3 The experimental drilling fluid was placed in the mud storage tank 1 and the agitator 18 was turned on to prevent the drilling fluid from consolidating. The electric heating jacket 23 was installed and adjusted to 80°C to preheat the drilling fluid for 3 hours, and the agitator 18 was turned on to prevent the drilling fluid from solidifying. Liquid solidification, the electric heating jacket 23 is installed on the outside of the mud storage tank 1, and the drilling fluid is ...

Embodiment 3

[0083] Such as figure 2 As shown, an experimental method for evaluating the anti-erosion performance of arrow-shaped drilling tool check valve under the condition of simulating gas well drilling tool internal injection, using the above-mentioned experimental device, includes the following steps:

[0084] (1) According to the drilling status of the experimental target block, the corresponding experimental drilling fluid is prepared and placed in the mud storage tank 1, and the prepared density is 1.9g / cm 3 The experimental drilling fluid was placed in the mud storage tank 1 and the agitator 18 was turned on to prevent the drilling fluid from consolidating. The electric heating jacket 23 was installed and adjusted to 80°C to preheat the drilling fluid for 3 hours, and the agitator 18 was turned on to prevent the drilling fluid from solidifying. Liquid solidification, the electric heating jacket 23 is installed on the outside of the mud storage tank 1, and the drilling fluid is ...

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Abstract

The invention discloses an experimental device for evaluating erosion resistance of a check valve of an arrow-shaped drilling tool under the condition of simulating internal spraying of a gas well drilling tool. The device comprises a gas pumping part, a drilling fluid pumping part and an erosion simulation part, the invention further discloses an experiment method for evaluating the erosion resistance of the check valve of the arrow-shaped drilling tool under the condition of simulating internal spraying of the gas well drilling tool. According to the invention, the internal spraying condition of the gas-mixing heavy mud drilling tool can be accurately and visually simulated, and the erosion degree and erosion phenomenon of the check valve of the arrow-shaped drilling tool caused by different scramble connection times under different internal spraying conditions and the influence degree of the erosion degree and erosion phenomenon on the blowout prevention performance of the check valve of the arrow-shaped drilling tool are determined through experiments; and the effective service life of the arrow-shaped check valve under different working conditions is obtained through experimental data analysis, and a theoretical basis is provided for safe operation time design of on-site connection operation.

Description

technical field [0001] The invention relates to the technical field of gas well control, in particular to an experimental device and method for evaluating the anti-erosion performance of an arrow-shaped drilling tool check valve under the condition of simulating the internal blowout of a gas well drilling tool. Background technique [0002] Drilling is an important link in the exploration and development of oil and gas resources. Blowout refers to the uncontrolled continuous influx of formation fluid into the wellbore and out of the ground, which is the most risky accident in drilling operations. When a drill tool internal blowout accident occurs during gas well drilling, formation gas rushes into the drill tool and carries drilling fluid out of the ground. Equipped with a check valve to prevent the downhole overflow from blowing out from the drilling tool to prevent blowout accidents. [0003] In the snap-on operation of the arrow-shaped drilling tool check valve at the we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/003
CPCG01M13/003
Inventor 万古军徐华高凯歌铁忠银孙光鹏逄铭玉樊朝斌李凯贤商翼
Owner CHINA PETROLEUM & CHEM CORP
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