Study on movement of granules in the fluid bed of supercritical CO<sub>2</sub> fracturing fluid

Chen Yanqiu

doi:10.13809/j.cnki.cn32-1825/te.2018.03.012

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Study on movement of granules in the fluid bed of supercritical CO₂ fracturing fluid

更新时间：2025-12-05

- Study on movement of granules in the fluid bed of supercritical CO₂ fracturing fluid
- Petroleum Reservoir Evaluation and Development Vol. 8, Issue 3, Pages: 55-60(2018)
- 作者机构：
  
  东北石油大学石油工程学院,黑龙江,大庆,163318
- 作者简介：
- 基金信息：
- DOI：10.13809/j.cnki.cn32-1825/te.2018.03.012
  CLC： E357
- Published：2018
- 稿件说明：
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Chen Yanqiu. Study on movement of granules in the fluid bed of supercritical CO₂ fracturing fluid[J]. Petroleum Reservoir Evaluation and Development, 2018, 8(3): 55-60.
DOI：

Chen Yanqiu. Study on movement of granules in the fluid bed of supercritical CO₂ fracturing fluid[J]. Petroleum Reservoir Evaluation and Development, 2018, 8(3): 55-60. DOI： 10.13809/j.cnki.cn32-1825/te.2018.03.012.

摘要

已知超临界CO

兼有气体和液体双重特性

为研究井筒中砂粒在超临界CO

压裂液形成的流化床中的受力以及在力的作用下支撑剂颗粒运移方式

对颗粒与颗粒

颗粒与流体之间的作用力以及流体对颗粒的作用力等进行分析。通过数学模型推导出弹性恢复系数与颗粒聚团浓度的关系

随着弹性恢复系数的增大

颗粒聚团浓度分布越均匀;颗粒聚团浓度变小

颗粒聚团碰撞越剧烈;颗粒沉降越慢

压裂液携砂效果越好。并通过对基于颗粒动力学理论的欧拉—欧拉多相流模型进行数值模拟

来描述颗粒在施工条件下超临界CO

压裂液的流化床内的流化模型及超临界相与固相颗粒两相分布状态

模拟结果与数学模型一致。

Abstract

It is well known that the supercritical CO

has the dual characteristic of gas and liquid. In order to study the forces of the sand in the fluidized bed formed by the supercritical CO

fracturing fluid and the migration of the proppant particle under the force

we analyzed the acting force between two particles

and the particle and the fluid

and that of the fluid on the particle. Based on the mathematical model

we derived the relation between the elastic restitution coefficient and the agglomeration concentration of particles. With the increasing of the elastic restitution coefficient

the distribution of the agglomeration concentration gets more evenly

the agglomeration concentration decreases

the collision of particle

s is more intense

the particles settle down more slowly

and the sand migration effect is better. Meanwhile

through the numerical simulation of the double Euler multiphase model based on the particle kinetic theory

we described the fluidization model in the fluidized bed formed by the supercritical CO

fracturing fluid in operation

and the two phase distribution of the particle of the supercritical phase and the solid phase. The simulation result is consistent with the mathematical model.

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Related Author

LIU HAOQI

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YU ZHILI

GONG WEI

LUO XI

LIN HUN

Related Institution

Chongqing Gas Mine, PetroChina Southwest Oil & Gasfield Company

Chongqing University of Science & Technology

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Study on movement of granules in the fluid bed of supercritical CO2 fracturing fluid

DOI：10.13809/j.cnki.cn32-1825/te.2018.03.012

摘要

Abstract

关键词

Keywords

references

Study on movement of granules in the fluid bed of supercritical CO₂ fracturing fluid