Development and separation effect of downhole oil/water separator in single-well injection and production

被引：0
作者：
Wang D. [1 ]
Wang Y. [2 ]
Liu J. [2 ]
He Z. [2 ]
Zhang H. [2 ]
Zhang L. [2 ]
Zhang Y. [2 ]
机构：
[1] Chinese Academy Engineering, Beijing
[2] Daqing Oilfield Limited Company, Daqing
来源：
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2022年 / 46卷 / 05期
关键词：
downhole oil/water separation; multicup isoflux; separator structure; single-well injection and production; suck rod pump;
D O I：
10.3969/j.issn.1673-5005.2022.05.007
中图分类号：
学科分类号：
摘要：
The single-well injection and production technology is that the oil and water of the produced liquid are separated in the downhole, the separated water is injected into the formation of the same wellbore and the remaining oil concentrated fluid is lifted to the surface. Downhole oil/water separator is the key of this technology. High efficiency downhole oil-water separator is developed by multicup isoflow, coalescence, shallow pool and phase permeation gravity drive. The optimum structure of downhole oil-water separator (dip angle of settling cup bottom, cup edges, cup height, liquid inlet clearance height between adjacent cups), cup bottom shape and filter material in cup are optimized by laboratory test. The experimental results show that optimized separator has the best separating effect with dip angle 30°, 12 cup edges, cup height 15 mm, liquid inlet clearance height 0. 5 mm, and 4 th oil wet filter material in cup. © 2022 University of Petroleum, China. All rights reserved.
引用
收藏
页码：66 / 72
页数：6
相关论文
共 18 条
  • [1] XING Lie, JIANG Minghu, ZHANG Yong, Et al., Analysis of droplet coalescence and breakage characteristics in axis-in hydrocyclone with diversion-cone, Journal of China University of Petroleum (Edition of Natural Science), 43, 2, pp. 140-147, (2019)
  • [2] CHENG Shiqing, DUAN Lian, YU Haiyan, Et al., Injection-production technique for the same horizontal well [J], Petroleum Geology & Oilfield Development in Daqing, 38, 4, pp. 51-60, (2019)
  • [3] JIANG Minzheng, ZHANG Di, DUAN Tianyu, Et al., Research on fault diagnosis method for the sucker rod pump injection-production system, China Petroleum Machinery, 46, 1, pp. 78-82, (2018)
  • [4] LIU He, GAO Yang, PEI Xiaohan, Et al., Progress and prospect of downhole cyclone oil/water separation with single-well injection-production technology, Acta Petrolei Sinica, 39, 4, pp. 463-471, (2018)
  • [5] WANG Sheng, WANG Wei, SHI Shiying, Et al., Study on separation performance of axial-flow hydrocyclone oil/water separator, China Petroleum Machinery, 46, 5, pp. 99-104, (2018)
  • [6] JIANG Minghu, XING Lei, ZHANG Yong, Effect of produced liquid sand content on wall wear of downhole oil/water separator, China Petroleum Machinery, 46, 6, pp. 63-69, (2018)
  • [7] ZHANG Jicheng, LU Guangfu, KUANG LI, Et al., Study on improving recovery efficiency of the well injection and production well in the same well [J], Mathematics in Practice and Theory, 23, 12, pp. 69-74, (2018)
  • [8] JIANG Minzheng, DUAN Tianyu, LIU Jintang, Et al., Application and node mechanics analysis of sucker rod pump injection-production system, China Petroleum Machinery, 45, 7, pp. 97-100, (2017)
  • [9] ZHAO Chuanwei, LI Zengliang, DENG Liangju, Et al., Research on operating characteristic of downhole dual-stage tandem oil/water separator, Journal of Mechanical Engineering, 50, 18, pp. 177-185, (2014)
  • [10] ZHAO Chuanwei, LI Zengliang, DONG Xiangwei, Design and ground test of downhole oil/water separation system with screw pump, Journal of China University of Petroleum (Edition of Natural Science), 37, 1, pp. 129-133, (2013)
12