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Output control device and method for experiment of injecting high-temperature gas-phase solvent into thick oil

A control device and high-temperature gas technology, which is applied in the field of physical simulation experiments of heavy oil recovery, can solve the problems of frequent switching of gas flow and difficult operation, and achieve the effects of high pressure control accuracy, low pressure fluctuation range and flexible control

Pending Publication Date: 2022-02-25
PETROCHINA CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the process of steam injection, when using the intermediate transition vessel in the patent application CN201911263945.1, it will not be able to deal with the problems of large gas flow, frequent switching and difficult operation

Method used

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  • Output control device and method for experiment of injecting high-temperature gas-phase solvent into thick oil
  • Output control device and method for experiment of injecting high-temperature gas-phase solvent into thick oil

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Embodiment Construction

[0059] The present invention will be described more clearly, and the preferred embodiments are further illustrated in connection with the preferred embodiments. Those skilled in the art will appreciate that the following description is illustrative and not limiting, and the scope of the invention should not be limited.

[0060] Such as figure 1 As shown, the present invention provides an output control device for a heavy oil injection high temperature gas phase solvent experiment, which comprises at least: a liquid pipeline 100, a first gas separator 22, a vent line 200, an automatic control. Acycle unit and intermediate container;

[0061] The tube line 100 is in communication with the feed port of the first gas separator 22, and the air opening of the first gas-liquid separator 22 is in communication with the vent line 200, the first gas liquid The liquid opening of the separator 22 is in communication with the intermediate container;

[0062] An automatic control pressure back ...

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Abstract

The invention discloses an output control device and method for an experiment of injecting a high-temperature gas-phase solvent into thick oil. The output control device comprises a liquid inlet pipeline, a first gas-liquid separator, a gas outlet pipeline, an automatic back pressure control unit and an intermediate container, wherein the liquid inlet pipeline is communicated with a feed port of the first gas-liquid separator, a gas outlet of the first gas-liquid separator is communicated with the gas outlet pipeline, and a liquid outlet of the first gas-liquid separator is communicated with the intermediate container; an automatic control back pressure unit is arranged on the gas outlet pipeline, and the automatic control back pressure unit controls the liquid inlet pipeline to be within a preset pressure range by controlling a switch of the gas outlet pipeline. According to the output control device and method for the experiment of injecting the high-temperature gas-phase solvent into the thick oil, accuracy of the experiment of injecting the high-temperature gas-phase solvent into the thick oil can be greatly improved.

Description

Technical field [0001] The present invention relates to the field of physical simulation experiments of heavy oil extraction, and more particularly to output control devices and methods for heavy oil injection high temperature gas phase solvent experiments. Background technique [0002] At present, a thusmaking steam SAGD mining physics simulation experiment, in order to control the production pressure, generally simulate the underlying rod pump pumping + nozzle scaling process, using manual adjustment output valve or high temperature back pressure valve to control the pressure of the steam chamber. The previous operation relies on experience, repeated adjustment of the operating labor intensity, poor reliability, especially when the experiment is more than 24 hours, the human factors have led to the risk of failure. The latter high temperature back pressure valve is suitable for low-viscosity, single-phase fluid, and is very poor in the physical simulation experiment in the thus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24E21B47/06E21B47/00E21B49/00E21B43/34
CPCE21B43/24E21B43/2406E21B47/06E21B47/00E21B49/00E21B43/34
Inventor 张胜飞李秀峦王红庄沈德煌席长丰苟燕金瑞凤孙新革
Owner PETROCHINA CO LTD
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