H区块缝洞单元连通方式及注水开发对策研究

发布时间：2018-05-31 18:34

本文选题：开发对策 + 连通方式　；参考：《西南石油大学学报(自然科学版)》2017年03期

【摘要】：针对H区块缝洞型油藏连通单元井组实施注水驱替开发效果差异很大这一问题,开展了缝洞单元连通方式及注水开发对策研究。利用地球物理方法对微裂缝、大尺度裂缝、有效基质、孔洞进行刻画,提出了3种缝洞单元连通方式:暗河岩溶管道、大尺度缝、弥散缝伴有大尺度缝。对不同的缝洞连通单元开展机理性数值模拟和矿场试验研究,给出合理的注水开发对策。暗河体系具有连通井组低注高采、洞注暗河驱洞采的注采关系;弥散缝伴有大尺度缝,沟通缝洞单元,不同单元二者匹配具有差异性,应控制合理的注采比,后续动态调整,提高注水开发采收率,改善区块连通单元注水驱替效果,对相同或类似缝洞型碳酸盐岩油藏连通单元注水开发具有一定的借鉴及指导意义。
[Abstract]:In order to solve the problem that there are great differences in the effect of water flooding and development in the connected unit well group of fracture-cavity reservoir in H block, the connection mode of fracture-cavity unit and the development countermeasure of water injection are studied in this paper. Using geophysical method to describe microcracks, large scale cracks, effective matrix and holes, three kinds of connection modes of fracture and cavity unit are proposed: underground river karst pipeline, large scale crack, dispersion joint with large scale crack. Mechanical numerical simulation and field test are carried out for different fracture-cavity connected units, and reasonable water injection development countermeasures are given. The dark river system has the injection-production relation of low injection-high production in connected well group, the injection-production relation of hole injecting dark river driving hole, the dispersive fracture accompanied with large scale fracture, the difference of the match between the two units, the reasonable injection-production ratio should be controlled, and the subsequent dynamic adjustment should be carried out. Improving the water injection recovery and water flooding effect of the connected units in the block has certain reference and guiding significance for the waterflooding development of the connected units in the same or similar fractured and cavernous carbonate reservoirs.
【作者单位】：中国石油塔里木油田分公司勘探开发研究院;东北石油大学非常规油气成藏与开发省部共建国家重点实验室培育基地;
【基金】：国家科技重大专项(2011ZX05004-004)
【分类号】：TE357.6

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