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难动用非常规页岩油超临界CO_(2)准干法压裂技术
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作者 王勇 沈彬彬 +3 位作者 王永康 李一朋 夏旭华 郝新元 《油气井测试》 2024年第5期28-33,共6页
吐哈油田三塘湖马郎凹陷芦草沟组页岩储层低孔、低渗,天然裂缝不发育,且原油黏度高,压裂后焖井过程中油水置换效率低,高含水生产周期长。针对存在的开发技术难题,选取三塘湖马郎凹陷、吉木萨尔凹陷芦草沟组页岩储层岩心和原油样品,开展... 吐哈油田三塘湖马郎凹陷芦草沟组页岩储层低孔、低渗,天然裂缝不发育,且原油黏度高,压裂后焖井过程中油水置换效率低,高含水生产周期长。针对存在的开发技术难题,选取三塘湖马郎凹陷、吉木萨尔凹陷芦草沟组页岩储层岩心和原油样品,开展了CO_(2)压裂造缝、增能降黏、渗析置换等提高采收率实验研究;在此基础上,通过室内筛选评价CO_(2)增稠剂、优化CO_(2)准干法压裂液体系性能,配套地面工艺流程,形成了非常规页岩储层超临界CO_(2)准干法压裂技术。经马XX井现场试验,结果表明,与同层同规模常规压裂技术对比,含油上升速度更快,同期累产油提升10.1%。该技术为国内非常规页岩油储层压裂改造提供了借鉴参考。 展开更多
关键词 非常规页岩油 吐哈 水置换 超临界CO_(2) CO_(2)增稠剂 焖井放喷 增能降黏
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Oil shale resources in China and their utilization 被引量:2
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作者 XU Zhi ZHU Jianwei +1 位作者 DONG Qingshui SUN Pingchang 《Global Geology》 2016年第1期48-54,共7页
The unconventional oil and gas resources presented in oil shales have meant these potential sources of hydrocarbons, which has become a research focus. China contains abundant oil shale resources, ranking fourth in th... The unconventional oil and gas resources presented in oil shales have meant these potential sources of hydrocarbons, which has become a research focus. China contains abundant oil shale resources, ranking fourth in the world, with ca. 7 254.48 x 108 t within 24 provinces, including 48 basins and 81 oil shale deposits. A- bout 48% of the total oil shale resources are concentrated in the eastern resource region, with a further 22% in the central resource region. 65 % of the total quantity of oil shale resources is present at depths of 0-500 m, with 17% of the total resources being defined as high-quality oil shales yielding more than 10% oil by weight. Chinese oil shale resources are generally hosted by Mesozoic sediments that account for 78% of the total re- sources. In terms of the geographical distribution of these resources, some 45% are located in plain regions, and different oil shale basins have various characteristics. The oil shale resources in China represent a highly prospective future source of hydrocarbons. These resources having potential use not only in power generation and oil refining but also in agriculture, metal and chemical productions, and environmental protection. 展开更多
关键词 China oil shale RESOURCES DISTRIBUTION UTILIZATION
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