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CO2 flooding crude oil separation foamability testing device and method

A technology of foaming performance and testing device, which is applied in the research field of gas flooding technology, can solve the problems of gas-liquid separation without considering the fluid flow concentration, and achieve the effect of accurate measurement

Pending Publication Date: 2017-10-20
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the existing methods for testing foam stability generally only consider the effect of pressure changes on foam generation, but do not consider the flow of fluid, CO 2 Concentration and the effects of gas-liquid separation, CO cannot be accurately modeled 2 The process and conditions of flooding crude oil entering the separator from the pipeline

Method used

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  • CO2 flooding crude oil separation foamability testing device and method
  • CO2 flooding crude oil separation foamability testing device and method

Examples

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Embodiment 1

[0049] CO in this example 2 Foaming performance testing device for flooding crude oil separation such as figure 1 shown, the device includes: CO 2 Cylinder 1, CO 2 Cylinder valve 2, N 2 Cylinder 3, N 2 Gas cylinder valve 4, hand pump 5, pressure regulating valve 6, oil storage container 7, valve 8, gas flow meter 9, first piston pressure vessel 10, stirring device 11, vent valve 12, piston stopper 13, temperature Sensor 14, pressure sensor 15, pressure regulating valve 16, vent valve 17, vortex breaker 18, valve 19, second piston pressure vessel 20, vent valve 21, inlet baffle plate 22, analog pipeline 23, temperature sensor 24, pressure sensor 25. Pressure regulating valve 26, vent valve 27, tee 28, water bath device 29, controller 30, temperature sensor 31, video camera 32. The CO 2 After cylinder 1 is fitted with CO 2 Cylinder valve 2, CO 2 The gas enters the lower space of the first piston pressure vessel 10 through the gas flow meter 9 . N 2 N in cylinder 3 2 g...

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Abstract

The invention provides a CO2 flooding crude oil separation foamability testing device and method. The device comprises a CO2 flooding crude oil pre-configuration module and a foaming simulation module. The CO2 flooding crude oil pre-configuration module includes a first piston pressure vessel, the lower part in the container is a CO2 and crude oil mixing space, the bottom is connected to a CO2 injection apparatus and a crude oil injection apparatus, the upper part is a pressure control space, and the top is connected to a pressure gas injection apparatus. The foaming simulation module includes a second piston pressure vessel, one end inside is a CO2-containing crude oil foaming simulation space communicated with the lower space of the first piston pressure vessel, and the other end is a pressure control space. The device and method provided by the invention can simulate CO2 solubility, CO2 flooding crude oil decompression foaming, flow decompression foaming, foaming capacity and foam stability testing.

Description

technical field [0001] The present invention is about a CO 2 Flooding crude oil separation and foaming performance test device and method, specifically, it is about a method for testing and evaluating CO 2 The device and test method for the foaming ability and foam stability of flooding crude oil in gathering and transportation separation belong to the technical field of oil and gas separation in oil and gas gathering and transportation system, and can also be used in the research of gas drive technology. Background technique [0002] CO 2 Oil flooding can not only enhance oil recovery, but also reduce greenhouse gas emissions, so it has broad application prospects. But CO 2 During the process of measuring, separating and transporting crude oil produced by flooding, there may be 2 The phenomenon of escaping and foaming will lead to separation difficulties, inaccurate measurement, and even a tank leakage accident in the three-phase separator, causing the oil well to stop ...

Claims

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Application Information

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IPC IPC(8): G01N33/28G01N7/00
CPCG01N7/00G01N33/2823
Inventor 左丽丽崔轩榕邢颜凝张琦
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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