低渗复杂断块油藏注水开发配套工艺技术研究

发布时间：2018-07-07 14:56

本文选题：欢喜岭油田 + 低渗透　；参考：《东北石油大学》2015年硕士论文

【摘要】：欢喜岭油田位于辽河盆地西部凹陷西斜坡南端,具有构造复杂、油藏类型多样的特点。其中,低渗透砂岩注水油藏特点是储层埋藏深、储层物性差、非均质性较强,普遍注水压力高;复杂小断块注水油藏特点是区块面积小(0.32~1.4Km2),储量少(24×104t~78×104t),储层物性随断块不同而变化,非均质性强,连通差,注水见效慢、增油幅度小。本课题针对低渗透砂岩注水油藏受储层物性差、非均质强、水速敏,油层跨度大、单层厚度薄、连通差等因素影响,早期注水开发效果差,注不进、采不出的问题,在室内分析评价油藏注水水质界限基础上,从改善注入水水质入手,开展了水质精细处理、水井增注、油井引效技术研究、注水井井筒水质保障技术、纳米分子膜驱油技术研究和氮气辅助水驱技术研究,改善了水驱效果,形成了低渗难采储量注水开发配套技术,实现了低渗油藏开发方式转换,有效保证了低渗透油藏高效开发。同时,在科学评价复杂油藏的基础上,开展了注水井深部调驱技术研究,有效的提高了复杂小断块注水油藏水驱效率,提高了区块采收率。
[Abstract]:The Huanxiling oilfield is located at the southern end of the western slope in the western depression of Liaohe basin, which is characterized by complicated structure and diverse reservoir types. Among them, low permeability sandstone water injection reservoir is characterized by deep reservoir burial, poor reservoir physical property, strong heterogeneity and high water injection pressure, and complex small fault block water injection reservoir is characterized by small block area (0.32 脳 1.4 km ~ 2), low reserves (24 脳 104t~78 脳 10 ~ 4 t) and variation of reservoir physical properties with different fault blocks. Strong heterogeneity, poor connectivity, slow water injection, small increase in oil. This paper aims at the problem that low permeability sandstone water injection reservoir is affected by poor physical property of reservoir, strong heterogeneity, water speed sensitivity, large span of reservoir, thin thickness of single layer, poor connectivity and other factors, poor effect of early water injection development, no injection and no production. On the basis of laboratory analysis and evaluation of reservoir water quality limits, starting with the improvement of injected water quality, the fine treatment of water quality, the increasing injection of wells, the technology of oil well priming efficiency, and the water quality guarantee technology of injection wells are carried out. The research on nano-molecular film flooding technology and nitrogen assisted water flooding technology has improved the water flooding effect, formed the matching technology of water injection development of low permeability difficult recovery reserves, and realized the transformation of low permeability reservoir development mode. It effectively guarantees the high efficiency development of low permeability reservoir. At the same time, on the basis of scientific evaluation of complex reservoirs, the deep water flooding technology of water injection wells is studied, which can effectively improve the water drive efficiency and block recovery of complex small fault block water injection reservoirs.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.6

【相似文献】