海上稠油油田多分支井技术方案设计研究  

Design and research of multi-branched well technical schemein an offshore heavy oil field

作　　者：熊书权 李凡 周路遥 李振 张颖[2] 宫汝祥[2] 王飞[2] 姜杰[2] XIONG Shuquan;LI Fan;ZHOU Luyao;LI Zhen;ZHANG Ying;GONG Ruxiang;WANG Fei;JIANG Jie(CNOOC Shenzhen Company,Guangdong Shenzhen 518000,China;China Oilfield Services Limited,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司深圳分公司,广东深圳518000 [2]中海油田服务股份有限公司油田生产事业部,天津300459

出　　处：《非常规油气》2021年第2期107-113,共7页Unconventional Oil & Gas

摘　　要：为提升稠油油田开发效果,在综合分析了多分支井适用性基础上,运用数值模拟方法开展E8M井井位、长度、分支数敏感方案设计研究,进行现场应用和效果评价。结果表明:(1)研究区块的最优方案为东部区块进行布井;多分支井主支长度与累产油水平无绝对相关关系,主支长度优选设计为500 m;多分支井分支数和分支长度与累产油量成负相关关系,与流压下降速度成正相关关系,设置3个分支,单分支长度设计150 m。(2)E8M井初期日产油371桶,初期产能是同层水平井的2.7倍,说明多分支井生产效果较好。该技术在海上稠油油田的成功应用,为多分支井技术的推广奠定了基础。In order to improve the development effect of heavy oil field,on the basis of comprehensive analysis of the applicability of multi-branch wells,a numerical simulation method was used to carry out the design and research on the sensitive scheme of well location,length,and number of branches of E8M well,to conduct on-site application and effect evaluation.The results show that:①The optimal plan for the study block is well layout in the eastern block;the length of the main branch of the multi-branch well has no absolute correlation with the cumulative oil production level,and the length of the main branch is preferably designed to be 500 m.The branch length is negatively correlated with the cumulative oil production and positively correlated with the flow rate drop rate.Three branches are set,and the single branch length is designed to be 150 m.②E8M well has an initial daily oil production of 371 barrels,and the initial productivity is the same level of horizontal wells 2.7 times,indicating that the multi-branch well has a good production effect.The successful application of this technology in offshore heavy oil fields has laid the foundation for the promotion of multi-branch well technology.

关 键 词：多分支井技术 薄差层稠油油田 海上油气田 参数优化 效果评价 

分 类 号：TE54[石油与天然气工程—油气田开发工程]