[1]李展峰,王 刚,王树涛,等.渤海N油田稠油低产液成因及治理策略研究[J].复杂油气藏,2021,14(03):95-99.[doi:10.16181/j.cnki.fzyqc.2021.03.018]
 LI Zhanfeng,WANG Gang,WANG Shutao,et al.Research on causes and treatment strategies of low-yield liquid of heavyoil in Bohai N Oilfield[J].Complex Hydrocarbon Reservoirs,2021,14(03):95-99.[doi:10.16181/j.cnki.fzyqc.2021.03.018]
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渤海N油田稠油低产液成因及治理策略研究()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
14卷
期数:
2021年03期
页码:
95-99
栏目:
油气工程
出版日期:
2021-10-25

文章信息/Info

Title:
Research on causes and treatment strategies of low-yield liquid of heavyoil in Bohai N Oilfield
作者:
李展峰王 刚王树涛刘 斌张振杰
中海石油(中国)有限公司天津分公司 天津 300452
Author(s):
LI ZhanfengWANG GangWANG ShutaoLIU BinZHANG Zhenjie
Tianjin Branch of CNOOC (China)Co.,Ltd.,Tianjin 300452,China
关键词:
稠油低产液原油乳化伤害储层堵塞提高采收率
Keywords:
heavy oillow-production fluidcrude oil emulsification damagereservoir blockageEOR
分类号:
TE53
DOI:
10.16181/j.cnki.fzyqc.2021.03.018
文献标志码:
A
摘要:
渤海N油田Y区块稠油油藏多数采油井在见水后至高含水期始终无法提液,处于低产液异常状态,严重影响油井产能的释放及采收率的提高。利用室内实验、静态资料以及生产动态资料等,对该类油井低产液成因进行系统分析,认为原油乳化与泥质堵塞是主要原因,见水阶段(含水率在20%至80%之间)以稠油乳化为主;含水率大于80%后,以泥质堵塞为主。并提出相应治理策略:在钻完井阶段下入盲管或者采用其它措施完全封堵泥岩段,以治理泥质堵塞问题;在见水阶段加入破乳剂或降黏剂治理稠油乳化问题。应用以上策略成功实现低产液井J03井侧钻后大幅提液,可为相似油田开发提供借鉴。
Abstract:
Most of oil production wells in heavy oil reservoirs of Y block in the Bohai N Oilfield are unable to extract fluids until the high water cut period after water breakthrough,and are in an abnormal state of low liquid production,which seriously affects the production capacity release of oil wells and increase of recovery rate. Based on the systematic analysis of the causes of low-yield fluids in this type of oil well through laboratory experiments,static data,and production dynamic data,etc.,it is believed that crude oil emulsification and muddy blockage are the main causes. In the water breakthrough stage (20%<fw<80%),heavy oil is mainly emulsified;when the water content is greater than 80%,the muddy blockage is the main cause. Corresponding treatment strategies are put forward. In the drilling and completion stage,blind pipes are inserted or other measures are used to completely block the mudstone section to control the muddy blockage;in the water breakthrough stage,demulsifiers or viscosity reducers are added to treat the problem of heavy oil emulsification. The above strategies have been successfully applied in the low-yield fluid well J03 to achieve a large-scale fluid extraction after sidetracking,which can provide a reference for the development of similar oilfields.

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备注/Memo

备注/Memo:
收稿日期:2021-04-07;改回日期:2021-07-14。
第一作者简介:李展峰(1989—),工程师,从事油气田开发,E-mail:lizhf18@cnooc.com.cn。
更新日期/Last Update: 2021-10-25