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Device and method for evaluating seepage performance of oil-displacing agent

An evaluation device and oil displacement agent technology, which is applied in the field of oil displacement agent seepage performance evaluation device, can solve the problems of accurately measuring the oil displacement agent seepage performance, and achieve the effect of high accuracy, high precision and stable injection pressure

Active Publication Date: 2021-10-19
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of oil displacement agent seepage performance evaluation device, this kind of oil displacement agent seepage performance evaluation device is used to solve the problem that existing oil displacement agent seepage performance evaluation device cannot accurately measure oil displacement agent in rock Problems with percolation properties in the core

Method used

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  • Device and method for evaluating seepage performance of oil-displacing agent
  • Device and method for evaluating seepage performance of oil-displacing agent
  • Device and method for evaluating seepage performance of oil-displacing agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as figure 1 As shown, this oil displacement agent seepage performance evaluation device includes an injection system ZX, a measurement system CX, a metering system JX, an incubator M, and a computer P. The solid line in the figure indicates the physical pipeline connection, and the dotted line indicates the electrical connection.

[0054] (1) Injection system ZX

[0055] Injection system ZX includes constant speed and constant pressure pump A1, constant speed and constant pressure pump two A2, piston container one B1, piston container two B2, piston container three B3 and shearing device E; the top of piston container one B1 passes through the pipeline, valve one K1 and valve four K4 are connected with the shearing device E, and the bottom end of the piston container-B1 is connected with the constant-speed constant-pressure pump-A1 through a pipeline. The top of the piston container two B2 is connected with the shearing device E through the pipeline, the valve two...

Embodiment 2

[0085] A method for evaluating the seepage performance of an oil-displacing agent, using the above-mentioned device to evaluate the seepage performance of the oil-displacing agent, comprising the following steps:

[0086] Step 1: Fill the upper part of piston container 1 B1 with oil displacing agent, the piston in metering piston container 1 D1 is located at the top, connect quick connector 1 Q1 and quick connector 2 Q2, close all valves, open insulation box M and heat to the test temperature.

[0087] Step 2. According to the experimental requirements, set the rotation angle of the core holder-C1 around the longitudinal axis-C1g and the transverse axis-C1e, put the core-C1c in the transparent rubber sleeve-C1b, and pass through the ring pressure tracker-C1f Inject water between the shell of the core holder C1a and the transparent rubber sleeve C1b, and the pressure of the injected water is the pressure required by the experiment. During the experiment, the ring pressure track...

Embodiment 3

[0091] A method for evaluating the seepage performance of an oil-displacing agent, using the above-mentioned device to evaluate the seepage performance of the oil-displacing agent, comprising the following steps:

[0092] Step 1: Fill the upper part of piston container 1 B1 with oil displacing agent, the upper part of piston container 2 B2 with oil, and the upper part of piston container 3 B3 with gas, the pistons in metering piston container 1 D1 and metering piston container 2 D2 are located at the top, close All valves are opened and the incubator M is heated to the experimental temperature.

[0093] Step 2. According to the experimental requirements, set the rotation angle of the core holder-C1 around the longitudinal axis-C1g and the transverse axis-C1e, put the water-saturated core-C1c in the transparent rubber sleeve-C1b, and track through the ring pressure Device one C1f injects water between the core holder shell one C1a and the transparent rubber sleeve one C1b, and ...

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Abstract

The invention relates to a device and a method for evaluating the seepage performance of an oil-displacing agent, and the device comprises an injection system, a measurement system and a metering system. The injection system comprises a first piston container, a second piston container, a third piston container, a foam generator, a shearing device, a simulation shaft, a first quick connector, a third quick connector, a fourth quick connector and a fifth quick connector. The measuring system comprises a quick connector II, a rock core clamping device I and a rock core clamping device II; the metering system comprises a metering piston container I and a metering piston container II; the top end of the simulation shaft is connected with a shearing device through a pipeline and a valve 15; a simulation perforation I, a simulation perforation II and a simulation perforation III are formed in the side surface of the simulation shaft; each simulated perforation is connected with a quick connector; and each quick connector can be connected with a measuring system. According to the invention, under the high pressure condition, the solution performance and the flowing property of the oil-displacing agent after shaft settlement and perforation shearing can be evaluated.

Description

Technical field: [0001] The invention belongs to the technical field of petroleum engineering and tertiary oil recovery, and in particular relates to a device and method for evaluating seepage performance of an oil displacement agent. Background technique: [0002] After water flooding in most oilfields in China, two-thirds of the crude oil remains underground. In order to further enhance crude oil recovery, tertiary oil recovery technology based on reservoir and fluid characteristics can increase recovery and increase output by 2%. Ten or so. Among them, technologies such as polymer flooding, ASP flooding, binary compound flooding, and foam flooding are widely used in tertiary oil recovery, and the seepage performance parameters of the oil displacement agent system in the core are an important basis for judging whether the technology can be applied in the field , which is also an important basic parameter for the preparation of tertiary oil recovery technical scheme. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/04
CPCG01N13/04
Inventor 周亚洲殷代印王东琪张承丽杨泽宏
Owner NORTHEAST GASOLINEEUM UNIV
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