天然气开采阻水装置AICD的设计和数值模拟

doi:10.13229/j.cnki.jdxbgxb20180880

吉林大学学报(工学版) ›› 2019, Vol. 49 ›› Issue (6): 1986-1991.doi: 10.13229/j.cnki.jdxbgxb20180880

天然气开采阻水装置AICD的设计和数值模拟

施卫平¹(),赵旭²,胡兴军³,余天明³(),柳博文¹,段彦¹

1. 吉林大学数学学院, 长春 130012
2. 中国石油化工股份有限公司石油工程技术研究院，北京 100101
3. 吉林大学汽车仿真与控制国家重点实验室, 长春 130022

收稿日期:2018-08-23 出版日期:2019-11-01 发布日期:2019-11-08
通讯作者: 余天明 E-mail:shiwp@jlu.edu.cn;ytm0406@126.com
作者简介:施卫平（1963-），男，教授，博士生导师. 研究方向：流体力学. E-mail:shiwp@jlu.edu.cn
基金资助:
国家自然科学基金项目(J1310022)

Design and numerical simulation of water restriction device AICD for natural gas exploitation

Wei-ping SHI¹(),Xu ZHAO²,Xing-jun HU³,Tian-ming YU³(),Bo-wen LIU¹,Yan DUAN¹

1. College of Mathematics, Jilin University, Changchun 130012, China
2. Sinopec Research Institute of Petronasleum Engineering，China Petroleum & Chemical Corporation, Beijing 100101，China
3. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China

Received:2018-08-23 Online:2019-11-01 Published:2019-11-08
Contact: Tian-ming YU E-mail:shiwp@jlu.edu.cn;ytm0406@126.com

摘要/Abstract

摘要：

设计了一种具有2层挡板的改进型自动流入控制装置（AICD），用于天然气开采过程中的井下控水。分析了AICD控水、通气的流动机理，数值计算了水、气在AICD装置内的流动，得到压力场。分别计算出水和气的入口-出口压差。采用曲线拟合的方法，得到了压差-流量的函数关系。计算结果表明，水的压差远远大于天然气的压差，说明本文设计的AICD具有显著的阻水效果。

关键词: 流体力学, 自动流入控制装置, 控水, 数值模拟, 压差

Abstract:

The autonomous inflow control device (AICD) is a downhole flow control device for oil and gas exploitation. It can inhibit the water flow into wellbore, delay water coning and prolong the service life of oil and gas wells. In this paper, an improved AICD with two layer baffles is designed for downhole water flow restriction. The mechanism of AICD was analyzed for the water flow restriction and the gas flow preservation. The gas flow and water flow in AICD are simulated numerically. The pressure field is calculated, and the inlet-outlet pressure difference of water and gas are calculated respectively. A curve fitting method is adopted to obtain the relationship between the pressure difference and the flow rate. Numerical results show that the pressure difference of water flow is much greater than the pressure difference of natural gas, indicating that our AICD has a significant effect for blocking water.

Key words: fluid mechanics, autonomous inflow control device（AICD）, water reservation, numerical simulation, pressure difference

中图分类号:

TB126

施卫平,赵旭,胡兴军,余天明,柳博文,段彦. 天然气开采阻水装置AICD的设计和数值模拟[J]. 吉林大学学报(工学版), 2019, 49(6): 1986-1991.

Wei-ping SHI,Xu ZHAO,Xing-jun HU,Tian-ming YU,Bo-wen LIU,Yan DUAN. Design and numerical simulation of water restriction device AICD for natural gas exploitation[J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(6): 1986-1991.

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压力差/Pa	流量q _w、q _g/(m³·d^-1)
压力差/Pa	5	10	15	20	25	30
水压差Δp _w	114 679	446 857	1 014 076	1 967 170	3 069 176	4 326 219
天然气压差Δp _g	200.457	521.93	974.534	1 588.21	2 432.40	3 336.04

天然气开采阻水装置AICD的设计和数值模拟

Design and numerical simulation of water restriction device AICD for natural gas exploitation

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