[1]李承龙,张 宇.特低渗透油藏水驱后气水交替注入提高采收率技术研究[J].复杂油气藏,2019,12(04):63-67.[doi:10.16181/j.cnki.fzyqc.2019.04.013]
　LI Chenglong,ZHANG Yu.Study on oil recovery of ultra-low permeability reservoirenhanced by GAW injection after waterflooding[J].Complex Hydrocarbon Reservoirs,2019,12(04):63-67.[doi:10.16181/j.cnki.fzyqc.2019.04.013]
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特低渗透油藏水驱后气水交替注入提高采收率技术研究()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
12卷
期数:
2019年04期
页码:
63-67
栏目:
油气工程
出版日期:
2019-12-25

文章信息/Info

Title:
Study on oil recovery of ultra-low permeability reservoirenhanced by GAW injection after waterflooding
作者:
李承龙1; 张 宇2
1.大庆油田勘探开发研究院,黑龙江 大庆 163712; 2.大庆师范学院计算机科学与信息技术学院,黑龙江 大庆 163712
Author(s):
LI Chenglong1; ZHANG Yu2
1.Exploration & Development Research Institute of Daqing Oilfield Company Ltd.,Daqing 163712,China; 2.School of Computer Science and Information Technology,Daqing Normal University,Daqing 163712,China
关键词:
水驱后;  CO2;  气水交替注入;  提高采收率
Keywords:
after waterflooding;  CO2;  gas alternating water;  enhanced oil recovery
分类号:
TE357.4
DOI:
10.16181/j.cnki.fzyqc.2019.04.013
文献标志码:
A
摘要:
大庆长垣外围特低渗透油藏存在注入压力高、储层动用程度低、水驱及常规调整措施效果差、效益差等问题,严重制约了油田产量。以长垣外围N区块为例,通过室内实验,对比分析水驱、水驱后连续注气以及水驱后气水交替注入方式的驱油效果。利用数值模拟方法优化注入参数,得到N区块最优注入方案:气水交替方式,CO2注入速度8 000 m3/d,注水速度20 m3/d,周期3个月,气水比1:1,注入轮次9次。经预测,该方案可在水驱的基础上提高采收率13.53%。
Abstract:
At present, there are many problems in ultra-low permeability reservoirs in the periphery of Daqing placanticline, such as higher injection pressure, lower reservoir utilization, poor effect of waterflooding and conventional adjustment measures, and poor benefit, and so on. These problems seriously restricted oil production. Aiming at these problems, the N block in the periphery of Daqing placanticline was taken as an example. According to laboratory experiments, it was compared and analyzed the oil displacement effects of waterflooding, continuous gas injection after waterflooding, and gas-water alternating(GAW)injection after waterflooding. The injection parameters are optimized by numerical simulation method, and the optimal injection scheme of N block is obtained as follows: GAW mode, CO2 injection rate of 8 000 m3/d, water injection rate of 20 m3/d, cycle time of 3 months, gas-water ratio of 1:1, and injection cycle number of 9. It is predicted that the oil recovery rate can be increased by 13.53% on the basis of water flooding.

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备注/Memo

备注/Memo:
收稿日期:2019-04-16; 改回日期:2019-05-17。
第一作者简介:李承龙(1986—),博士, 主要从事油气田开发工程理论与技术、提高采收率技术方面研究。E-mail:lcl716@126.com。
基金项目:国家重大科技专项“外围油田改善开发效果及提高采收率技术研究与应用”(2016E-0209)。
更新日期/Last Update: 2019-12-30