The Shusan block of Shuguang Oilfield is an unconsolidated sandstone reservoir with a burial depth of 950 m and a shale content of 13.9%. Affected by this, the compaction of the reservoir is poor and the cementation of the reservoir is loose. The sand production of oil wells in the reservoir is serious, with poor development effects, and the predicted recovery rate is only 30.8%. The unconsolidated sandstone reservoir in Shu 3 block has entered into themiddle and later development stages, which has encountered a series of problems such as rapid water rise and poor development effects. After carrying out the research on chemical flooding related to reservoir engineering, the results show that the optimized formula system for chemical flooding and the ancillary sand control technologies can effectively improve oil recovery. Applying the research results to 6 well groups, after the pilot test of chemical flooding, the daily oil production was significantly increased, and the comprehensive water cut decreased by 14.2 percentage points, which effectively improved the development effect. The research provides a reference for the chemical flooding development of similar reservoirs.
Xu Guomin
,
Gao Zhongmin
. Research and Test of Chemical Flooding Technology in Unconsolidated Sandstone Reservoirs[J]. Special Oil & Gas Reservoirs, 2020
, 27(6)
: 139
-144
.
DOI: 10.3969/j.issn.1006-6535.2020.06.020
[1] 徐梅.曙三区综合防砂先导试验研究[J].特种油气藏,2007,14(6):75-76,86.
XU Mei.Composite sand control pilot test in Shu 3 Area[J].Special Oil & Gas Reservoirs,2007,14(6):75-76,86.
[2] 刘俊荣,张修文,任芳祥,等.辽河油田开发技术座谈会文集[C].北京:石油工业出版社,2002:3-6.
LIU Junrong,ZHANG Xiuwen,REN Fangxiang,et al.Symposium proceedings on development technology of Liaohe Oilfield[C].Beijing:Petroleum Industry Press,2002:3-6.
[3] 张金亮.我国含油气湖盆扇三角洲相模式[J].地质评论,1996,42(增1):147-151.
ZHANG Jinliang.Facies models for lacustrine fan deltas in hydrocarbon-bearing basins,China[J].Geological Review,1996,42(S1):147-151.
[4] 温静.辽河油田特高含水期油藏二元复合驱井网井距优化研究[J].特种油气藏,2012,19(2):73-75,119.
WEN Jing.Well pattern and spacing optimization for surfactant/polymer flooding in high water cut reservoirs of Liaohe Oilfield[J].Special Oil & Gas Reservoirs,2012,19(2):73-75,119.
[5] 沈平平.提高采收率技术进展[M].北京:石油工业出版社,2006:93-94.
SHEN Pingping.Technical progress of improving efficiency of recovery(EOR)[M].Beijing:Petroleum Industry Press,2006:93-94.
[6] 刘喜林.国外聚合物驱油技术[M].北京:石油工业出版社,2002:1-26.
LIU Xilin.Polymer flooding technology abroad[M].BeiJing:Petroleum Industry Press,2002:1-26.
[7] 王林.曙3区开发调整油藏工程设计[J].化工管理,2019,35(9):176-177.
WANG Lin.The reservoir engineering design of development adjustment in Shu 3 Area[J].Chemical Enterprise Management,2019,35(9):176-177.
[8] 杨灿,王奎斌,唐海龙,等.化学驱油藏工程优化设计研究[C].北京:石油工业出版社,2018:11.
YANG Can,WANG Kuibin,TANG Hailong,et al.Research on optimal design of the reservoir engineering of chemical flooding[C].Beijing:Petroleum Industry Press,2018:11.
[9] 侯维虹.聚合物驱油层吸水剖面变化规律[J].石油勘探与开发,2007,34(4):478-482.
HOU Weihong.Water injection profile variation of oil layers under polymer flooding[J].Petroleum Exploration and Development,2007,34(4):478-482.
[10] 王冬梅,韩大匡,侯维虹,等.聚合物驱剖面返转类型及变化规律[J].大庆石油地质与开发,2007,26(4):96-99.
WANG Dongmei,HAN Dakuang,HOU Weihong,et al.Types and changing laws of profile reversal during polymer flooding[J].Petroleum Geology & Oilfield Development in Daqing,2007,26(4):96-99.
[11] 张方礼.第七届化学驱提高采收率技术年会论文集[C].北京:石油工业出版社,2018:14.
ZHANG Fangli.Proceedings of the 7th anuual conference on enhanced oil recovery technology by chemical flooding[C].Beijing:Petroleum Industry Press,2018:14.
[12] 王增林,张民,杨勇,等.稠油热化学驱过程中影响因素及其交互作用对采收率的影响[J].油气地质与采收率,2017,24(1):64-68.
WANG Zenglin,ZHANG Min,YANG Yong,et al.Effect of influencing factors and their interaction on thermo-chemical recovery of heavy oil[J].Petroleum Geology and Recovery Efficiency,2017,24(1):64-68.
[13] 杨森,许关利,刘平,等.稠油化学降黏复合驱提高采收率实验研究[J].油气地质与采收率,2018,25(5):80-86,109.
YANG Sen,XU Guanli,LIU Ping,et al. Experimental study on chemical viscosity-reducing compound flooding for EOR of heavy oil reservoir[J].Petroleum Geology and Recovery Efficiency,2018,25(5):80-86,109.
