低渗透裂缝性油藏测井侧向剩余油挖潜措施研究——以长庆A油田为例  

Potential tapping measures for lateral remaining oil in low permeability fractured reservoir logging:a case study of Changqing A oilfield

作　　者：李震 张金海 李桂山 宗飞 许阳 张思顿 LI Zhen;ZHANG Jinhai;LI Guishan;ZONG Fei;XU Yang;ZHANG Sidun(Geological Research Institute,China National Logging Corporation,PetroChina,Xi’an 710077,Shaanxi,China;Changqing Branch,China Petroleum Logging Co.,Ltd.,Xi’an 710200,China;PetroChina Coalbed Methane Company Limited,Beijing 100102,China)

机构地区：[1]中国石油集团测井有限公司地质研究院,陕西西安710077 [2]中国石油集团测井有限公司长庆分公司,陕西西安710200 [3]中石油煤层气有限责任公司,北京100102

出　　处：《石油地质与工程》2024年第1期90-94,98,共6页Petroleum Geology and Engineering

基　　金：中国石油集团测井有限公司十大科技项目之项目八课题4“老油田挖潜稳产测井综合评价技术研究”(CNLC2022-08B04)。

摘　　要：针对长庆A油田低渗透裂缝性油藏注水开发动态特点,通过深化精细基础地质研究,结合老区检查井取心、测井资料,开展了剩余油分布精细评价、不同水线距离的检查井水洗程度评价,以及裂缝对剩余油分布和开发效果的影响分析。结果表明,低渗透裂缝性油藏主向井水淹严重、侧向区剩余油富集,侧向剩余油挖潜设计方案可行;油藏井网加密调整后开发效果评价证实,侧向剩余油挖潜方案可减缓油藏递减、改善油藏的开发效果。可为同类油藏开发中后期实施井网调整、增储挖潜及油藏采收率提高提供有益借鉴。According to dynamic characteristics of water injection development of low permeability fractured reservoir in Changqing A oilfield,the fine basic geological research is deepened.Based on the coring and logging data of inspection wells in old area,a detailed evaluation of remaining oil distribution,of water washing degree of inspection wells with different water line distances,and the impact analysis of fractures on the remaining oil distribution and development were carried out.The results indicate that the main wells of low permeability fractured reservoirs is severely flooded,and the remaining oil in lateral zone is enriched.The design scheme for the remaining oil recovery in the lateral zone is feasible.The development effect evaluation after well pattern infilling confirms that the lateral residual oil tapping scheme can slow down the reservoir decline and improve the development effect,which can provide useful reference for well pattern adjustment,reservoir expansion,potential tapping,and enhanced oil recovery in the middle and later stages of similar oil reservoirs.

关 键 词：低渗透裂缝性油藏 注水开发 水洗程度 剩余油挖潜 井网加密调整 提高采收率 

分 类 号：TE357[石油与天然气工程—油气田开发工程]