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Rescue well killing simulation experiment device and method

A technology for simulating experimental devices and rescue wells, which is applied in wellbore/well components, earthwork drilling and production, etc.

Active Publication Date: 2021-08-24
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
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At present, there is no domestic experimental research on this

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  • Rescue well killing simulation experiment device and method
  • Rescue well killing simulation experiment device and method
  • Rescue well killing simulation experiment device and method

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Embodiment Construction

[0014] Such as figure 1 As shown, the rescue well killing simulation experiment device includes: experimental wellbore, gas injection system, liquid injection system, gas-liquid separation system, back pressure control system and liquid drainage system; the gas injection system is used to inject gas into the experimental wellbore, The gas injection speed can be adjusted automatically. The liquid injection system is used to inject liquid into the experimental wellbore at a constant speed. The experimental wellbore simulates the gas-liquid two-phase flow condition in the accident well. After the mixed fluid flows out of the experimental wellbore, the gas and liquid are separated by the gas-liquid separation system. Separation, in which, the back pressure control system controls the back pressure of the wellhead. After the experiment is over, the liquid drainage system discharges liquid; the gas injection system automatically adjusts the gas injection rate according to the change ...

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Abstract

The invention relates to a rescue well killing simulation experiment device, comprising: an experimental wellbore, a gas injection system, a liquid injection system, a gas-liquid separation system, a back pressure control system and a liquid drainage system; Gas and liquid are injected into the wellbore, and the experimental wellbore simulates the gas-liquid two-phase flow in the accident well. After the mixed fluid flows out of the experimental wellbore, the gas and liquid are separated by the gas-liquid separation system. The back pressure control system controls the back pressure of the wellhead. After the experiment, The liquid drainage system performs liquid drainage; the gas injection system automatically adjusts the gas injection rate according to the change of the bottom hole pressure of the experimental wellbore, which truly reflects the process of the continuous reduction of gas well production during the killing process, thereby realizing the coupling simulation of the wellbore and the formation. The invention provides a rescue well killing simulation device and method, which can simulate the change of the bottom hole pressure of the accident well under different well killing parameters, and provide model parameters and experimental data for the design and research of the rescue well killing operation parameters.

Description

technical field [0001] The invention belongs to the technical field of unconventional well control, and in particular relates to a rescue well killing simulation experiment device and method. Background technique [0002] Oil and gas resources are an important strategic energy source, which plays an inestimable role in ensuring national economic and social development and national defense security. However, oil and gas exploitation is a high-risk job. Once a blowout accident occurs, it will not only cause resource loss and equipment damage, but may also cause casualties, environmental damage and bad social impact. Well control technology is an indispensable and important part of modern drilling and production engineering. It has been highly valued and played an important role in dealing with blowout accidents, reducing property losses, and reducing environmental pollution. [0003] Rescue well, as an unconventional well killing technology, is the last resort to deal with bl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 孙宝江张帅王志远陈嘉辉廖友强
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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