中东巨厚复杂碳酸盐岩油藏分层系均衡注水开发技术  

Separate-layer balanced waterflooding development technology for thick and complex carbonate reservoirs in the Middle East

作　　者：宋新民[1] 李勇[1] 李峰峰 衣丽萍[1] 宋本彪[1] 朱光亚[1] 苏海洋[1] 魏亮[1] 杨超[1] SONG Xinmin;LI Yong;LI Fengfeng;YI Liping;SONG Benbiao;ZHU Guangya;SU Haiyang;WEI Liang;YANG Chao(PetroChina Research Institute of Petroleum Exploration&Development,Beijing 100083,China)

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《石油勘探与开发》2024年第3期578-587,共10页Petroleum Exploration and Development

基　　金：中国石油重大科技专项项目“巨厚碳酸盐岩油藏注水开发关键技术研究与应用”(2023ZZ19-01)。

摘　　要：基于中东碳酸盐岩油藏注水开发实践,以两伊地区(伊拉克和伊朗)白垩系巨厚生物碎屑灰岩油藏为例,针对笼统注采导致开发效果差的难题,提出以隐蔽隔夹层为格架精细划分开发层系、多类型多井型井网有机组合、构建均衡注采体系为核心的巨厚复杂碳酸盐岩油藏均衡注水开发技术。两伊地区巨厚碳酸盐岩油藏具有垂向非均质性强、多成因超高渗透层发育、隔夹层隐蔽性强等特征,基于隐蔽隔夹层识别与刻画技术、封隔能力评估技术,提出均衡注水开发技术,形成常规层系架构、精细层系架构、深化层系架构3种均衡注水开发模式和技术。数值模拟表明,均衡注水开发技术可实现两伊地区巨厚复杂碳酸盐岩油藏精细高效注水开发、均衡动用不同类型储量,并为同类油藏的开发优化提供借鉴。Based on the waterflooding development in carbonate reservoirs in the Middle East,in order to solve the problem of the poor development effects caused by commingled injection and production,taking the thick bioclastic limestone reservoirs of Cretaceous in Iran-Iraq as an example,this paper proposes a balanced waterflooding development technology for thick and complex carbonate reservoirs.This technology is based on the fine division of development units by concealed baffles and barriers,the combination of multi well type and multi well pattern,and the construction of balanced water injection and recovery system.For the thick carbonate reservoirs in Iran and Iraq,which are extremely heterogeneous vertically with ultra-high permeability zones of various genesis,and highly concealed baffles and barriers,based on the technologies of identification characterization and sealing evaluation for concealed baffles and barriers,the balanced waterflooding development technology is proposed,and three types of balanced waterflooding development modes/techniques are formed,namely,conventional stratigraphic framework,fine stratigraphic framework,and deepened stratigraphic framework.Numerical simulations show that this technology is able to realize a fine and efficient waterflooding development to recover,in a balanced manner,the reserves of thick and complex carbonate reservoirs in Iran and Iraq.The proposed technology provides a reference for the development optimization of similar reservoirs.

关 键 词：中东 巨厚碳酸盐岩油藏 垂向非均质性 隐蔽隔夹层 封隔能力 分层系开发 均衡注水 

分 类 号：TE345[石油与天然气工程—油气田开发工程]