摘要
欧利坨子油田欧31块为厚层状、砂砾岩油藏,储层物性属中孔、低渗储层,针对该块沙三上油藏常规开采油井产能低、依靠天然能量开发产量递减快等问题,通过实施压裂措施改善了低渗透储层的渗流能力,获得一定的产能;通过实施高压注水、水井压裂实现了低渗透油藏注水开发,夯实油藏稳产基础,油藏开发效果得到明显改善。根据储层划分与对比,结合地震资料和储层预测成果,落实了沙三中油藏储层分布。针对沙三中薄层油藏、厚层块状底水油藏,应用水平井技术进一步提高了储层动用程度,区块整体开发效果得到明显改善。
Block Ou31 of Oulituozi oilfield belongs to thick banding glutenite oil reservoir with medium porosity and low permeability. For the conventional production of Upper Sz in this block there are some problems, such as low producers flow potential, fast decline of oil production based on natural depletion oil recovery method. So, in order to improve the infiltrating conditions of low permeability reservoirs, fracturing is implemented, and certain productivity has been got. The oil reservoir development results are obviously improved based on flood development in low permeability oil reservoirs, where high pressure water injection and injectors fracturing have been implemented, and these measures further guarantee the stable production. According to reservoir delineation and correlation, seismic data and reservoir prediction results, reservoir beds distribution in S3^2 oil reservoir is ascertained. For thin bed oil reservoirs and thick blocklike bottom water oil reservoirs in S3^2, horizontal wells are used to further improve the producing degree of the reservoir bed, and the entire development results of the block are improved obviously. The experience and understanding can be the guide for the development of the same type oil reservoir.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2008年第4期70-72,共3页
Petroleum Geology & Oilfield Development in Daqing
关键词
欧31块
高效开发
实践与认识
注水
压裂
水平井
Block Ou31
high effective development
practice and understanding
flooding
fracturing
horizontal wells
