摘要
为了有效开发表外储层，在介绍了表外储层概念的基础上，系统论述了大庆喇萨杏油田表外储层地质特征、渗流特征、渗流机理以及剩余油潜力状况。从研究结果看，该区表外储层属于裂缝不发育（或发育差）的低渗透储层，与表内储层、外围低渗透裂缝储层在渗流机理和规律上有明显差异；喇萨杏油田表外储层目前采出程度10％左右，剩余油主要分布在厚度较薄、动用较差的薄层中，以独立型表外储层为主。总结了开采中取得的认识和实践中获得的系列配套开发技术，展望了表外储层开发前景，认为今后可采用三次加密、三次采油等技术进一步提高采收率，但三次采油井网部署、注剂还需进一步优化和研究。
The paper discusses the geological characteristics, seepage characteristics, seepage mechanism and the potential of remaining oil of unbooked reservoirs in Daqing La-Sa-Xing Oilfield. Results show that unbooked reservoirs in Daqing La-Sa-Xing Oilfield belongs to low permeability reservoirs where fractures undeveloped or poorly developed, and its seepage mechanism and rules have obvious differences with those of usable reservoir and low permeable ＆ fractured reservoirs in Daqing Peripheral Oilfield. The current recovery degree of La-Sa- Xing unbooked reservoir is about 10%. Remaining oil distributed mainly in the reservoirs with thin thickness and low production degree dominated by independent type of unbooked reservoirs. This paper also summaries the sup- porting development technologies from the knowledge and practice in the development process, introduces the development future of unbooked reservoirs, and presents that tertiary infilling technique and EOR technology will increase the recovery of unbooked reservoirs furtherly, but the well pattern of EOR technology and injecting agent need optimization and further research.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2009年第5期112-118,共7页
Petroleum Geology & Oilfield Development in Daqing
关键词
喇萨杏油田
表外储层
开发
地质特征
配套技术
La-Sa-Xing Oilfield
unbooked oilfield
development
geological charactoristics
comprehensive techique
