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Visual experiment device for realizing combined injection and layered injection of polymer flooding agent and working method thereof

An experimental device and polymer technology, which is applied in the fields of earthwork drilling, fluid extraction, measurement, etc., can solve the problem that there is no working method of polymer layered injection simulation experimental device.

Active Publication Date: 2015-11-25
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the flat sand packing model is only limited to the application of polymer layered injection flooding experiments, and there is no polymer layered injection simulation experiment device and corresponding working method based on the flat sand packing model.

Method used

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  • Visual experiment device for realizing combined injection and layered injection of polymer flooding agent and working method thereof
  • Visual experiment device for realizing combined injection and layered injection of polymer flooding agent and working method thereof
  • Visual experiment device for realizing combined injection and layered injection of polymer flooding agent and working method thereof

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Experimental program
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Effect test

Embodiment 1

[0058] A visual experimental device for realizing polymer flooding and stratified injection, including a fluid injection and control system, a polymer seepage simulation system and an output fluid metering system, the fluid injection and control system, the polymer seepage simulation The system and the output fluid metering system are sequentially connected;

[0059] The polymer seepage simulation system includes a low-permeability flat sand filling model 12 and a high permeability flat sand filling model 13;

[0060] The fluid injection and control system includes a device that can control liquid layering or layering injection, and the liquid is any one of formation water, crude oil, polymer, and distilled water; the layering or layering in the fluid injection and control system The liquid flowing out in layers flows into the polymer seepage simulation system; the layering refers to that the liquid from the same liquid source is injected into the low-permeability flat sand-fi...

Embodiment 2

[0074] The working method of the experimental device described in embodiment 1, the concrete steps include:

[0075] (1) Simulate the geological conditions of the reservoir: fill the low-permeability flat sand filling model 12 with 120 mesh quartz sand, fill the high permeability flat sand filling model 13 with 60 mesh quartz sand, and the filling thickness of the quartz sand is 0.5cm , wherein, the low-permeability flat sand-fill model 12 and the high-permeability flat sand-fill model 13 have the same size, both are 10cm in length, 10cm in width, and 0.5cm in height;

[0076] (2) Measure the porosity and permeability of the quartz sand in the low-permeability flat sand-filling model 12 and the high-permeability flat sand-filling model 13 respectively, and record: The porosity is φ 1 =0.30, the porosity of the quartz sand in the high-permeability flat sand filling model 13 is φ 2 =0.32, the permeability k of quartz sand in the low-permeability plate sand filling model 12 1 ...

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Abstract

The invention relates to a visual experiment device for realizing combined injection and layered injection of a polymer flooding agent and a working method thereof. The experiment device comprises a fluid injection and control system, a polymer seepage simulation system and a produced fluid measurement system, wherein the polymer seepage simulation system comprises a low-seepage flat-plate sand-packed model and a high-seepage flat-plate sand-packed model; a two-way valve is arranged between a connection pipeline I for connecting the high-seepage flat-plate sand-packed model and a connection pipeline II for connecting the low-seepage flat-plate sand-packed model; when the two-way valve is closed, a polymer is injected into the high-seepage flat-plate sand-packed model and the low-seepage flat-plate sand-packed model respectively, and the experiment device carries out a visual experiment for the layered injection of the polymer; and when the two-way valve is opened, the polymer is injected into the high-seepage flat-plate sand-packed model and the low-seepage flat-plate sand-packed model in a combination manner, and the experiment device carries out a visual experiment for the combined injection of the polymer. The experiment device disclosed by the invention realizes completions of the experiments for the combined injection and the layered injection of the polymer flooding agent in case of no interruptions of the experiments.

Description

technical field [0001] The invention relates to a visual experiment device and a working method for realizing polymer driving layer and layer injection, and belongs to the technical field of petrochemical industry. Background technique [0002] Polymer flooding is an oil recovery technology that uses polymer solution as an oil displacement agent, which can effectively increase oil recovery. At present, this technology is one of the main technologies for oil recovery in eastern oilfields in my country. However, affected by formation permeability and other factors, the development effect of polymer flooding varies greatly. According to formation properties such as formation permeability, the formation is divided into different layer series, and polymer layer injection is implemented, which can effectively produce the remaining oil in the formation and further improve the recovery factor. With the help of visualized seepage experiments, the layered injection displacement proce...

Claims

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Application Information

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IPC IPC(8): E21B43/22E21B47/00E21B49/00
Inventor 刘永革侯健于波李淑霞张广福赵帆陆努韦贝周康
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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