An experimental device and method for evaluating the anti-erosion performance of arrow-shaped drilling tool check valves under simulated gas well drilling tool internal blowout conditions

An experimental method, check valve technology, applied in the direction of mechanical valve testing, etc., can solve the problem of unstudied safety grabbing operation time, no research on erosion performance evaluation of arrow-shaped drilling tool check valve, and inability to determine the arrow-shaped drilling tool check valve. Issues such as the degree of influence on the blowout prevention performance of the return valve

Active Publication Date: 2022-06-28
CHINA PETROLEUM & CHEM CORP +3
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  • 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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  • An experimental device and method for evaluating the anti-erosion performance of arrow-shaped drilling tool check valves under simulated gas well drilling tool internal blowout conditions
  • An experimental device and method for evaluating the anti-erosion performance of arrow-shaped drilling tool check valves under simulated gas well drilling tool internal blowout conditions

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Experimental program
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Effect test

Embodiment 1

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

[0060] (1) According to the drilling status of the experimental target block, prepare the corresponding experimental drilling fluid and place it in the slurry tank 1, and the preparation density is 1.9g / cm 3 The experimental drilling fluid is placed in the slurry tank 1 and the agitator 18 is turned on to prevent the consolidation of the drilling fluid. The electric heating jacket 23 is installed and adjusted to 80°C to preheat the drilling fluid for 3 hours, and the agitator 18 is turned on to prevent drilling. For liquid consolidation, an electric heating jacket 23 is installed on the outside of the slurry tank 1, and the drilling fluid is heated by adjusting to the temperat...

Embodiment 2

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

[0072] (1) According to the drilling status of the experimental target block, prepare the corresponding experimental drilling fluid and place it in the slurry tank 1, and the preparation density is 1.9g / cm 3 The experimental drilling fluid is placed in the slurry tank 1 and the agitator 18 is turned on to prevent the consolidation of the drilling fluid. The electric heating jacket 23 is installed and adjusted to 80°C to preheat the drilling fluid for 3 hours, and the agitator 18 is turned on to prevent drilling. For liquid consolidation, an electric heating jacket 23 is installed on the outside of the slurry tank 1, and the drilling fluid is heated by adjusting to the temperat...

Embodiment 3

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

[0084] (1) According to the drilling status of the experimental target block, prepare the corresponding experimental drilling fluid and place it in the slurry tank 1, and the preparation density is 1.9g / cm 3 The experimental drilling fluid is placed in the slurry tank 1 and the agitator 18 is turned on to prevent the consolidation of the drilling fluid. The electric heating jacket 23 is installed and adjusted to 80°C to preheat the drilling fluid for 3 hours, and the agitator 18 is turned on to prevent drilling. For liquid consolidation, an electric heating jacket 23 is installed on the outside of the slurry tank 1, and the drilling fluid is heated by adjusting to the temperat...

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Abstract

The invention discloses an experimental device for evaluating the anti-erosion performance of an arrow-shaped drilling tool check valve under the condition of simulating the internal injection of a gas well drilling tool. The device includes a gas pumping part, a drilling fluid pumping part and an erosion simulation part; An experimental method for evaluating the anti-erosion performance of an arrow-shaped drilling tool check valve under the simulated gas well drilling tool internal blowout condition is disclosed. The invention can accurately and intuitively simulate the internal spraying of gas-mixed heavy mud drilling tools, and determine the erosion degree and erosion phenomenon of the arrow-shaped drilling tool check valve caused by different splicing times under different internal spraying conditions, and its The degree of influence on the blowout prevention performance of the arrow-shaped drilling tool check valve is analyzed, and the effective life of the arrow-shaped check valve under different working conditions is obtained through the analysis of experimental data, which provides a theoretical basis for the safe operation time design of the on-site rush operation.

Description

technical field [0001] The invention relates to the technical field of gas well well control, in particular to an experimental device and method for evaluating the erosion resistance 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 phenomenon in which formation fluid continuously flows into the wellbore and out of the ground without control. It is the most risky accident in drilling operations. When a drilling tool blowout accident occurs in the process of drilling a gas well, the formation gas flows into the drilling tool and carries the drilling fluid out of the ground. At this time, it is necessary to carry out the check valve of the arrow-shaped drilling tool at the wellhead. With a check valve, the downhole overflow can be prevented from b...

Claims

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Application Information

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Patent Type & Authority Patents(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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