文章摘要
缝洞型油藏高压注水离散模型研究
The Research on discrete model of High pressure Water injection in fractured-cave Reservoir
投稿时间:2020-01-06  修订日期:2020-01-06
DOI:
中文关键词: 缝洞型油藏  高压注水 离散介质  裂缝
英文关键词: fractured-vuggy reservoir  high pressure water injection  discrete medium  fracture  
基金项目:本文受国家科技重大专项“塔里木盆地碳酸盐岩油气田提高采收率关键技术示范工程(编号:2016ZX05053)”和中石化控递减重大专项“缝洞型油藏扩大水驱规模及改善水驱效果技术研究”(编号:ZDP17003)资助。
作者单位E-mail
袁飞宇 中石化西北油田采油二厂 56572579@qq.com 
吕远 西南石油大学 673970715@qq.com 
陈小凡 西南石油大学 673970715@qq.com 
张世亮 中石化西北油田采油二厂 578176719@qq.com 
李璐 中石化西北油田采油二厂 332650661@qq.com 
张冰岩 西南石油大学 673970715@qq.com 
刘东晨 西南石油大学 673970715@qq.com 
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中文摘要:
      塔河油田缝洞型碳酸盐岩油藏主要储渗空间为碳酸盐岩的岩溶缝-洞复合体,孔洞和裂缝分布复杂,非均质性极强,在储集空间上呈现出不连续,高度离散的状态。离散分布的溶洞储集体使得部分油井在生产和注水过程中均表现出了多套储集体参与流动的特征。对此塔河油田创新性的提出高压注水开发方式,通过增大注水压力和注水量开启天然裂缝,更好的沟通远端储集体,扩大注水替油的波及范围,现场实践增油效果较好。本文通过建立缝洞型碳酸盐岩油藏离散介质模型,对高压注水井的注水和生产动态进行拟合分析,以获取部分油藏参数和油水流动规律,对以后的高压注水政策提供良好基础。
英文摘要:
      The main reservoir of fracture-cavity carbonate reservoirs in Tahe Oilfield is a karst fractures and cavities. The pores and fractures are complex and heterogeneous, and they present discontinuous and highly discrete state in the reservoir space. The discrete distribution of cave deposits makes some oil wells show the characteristics of multiple reservoirs participating in the flow during production and water injection. In this regard, Tahe Oilfield has innovatively proposed a high-pressure water injection development method, which opens natural cracks by increasing water injection pressure and water injection volume, and better communicates with remote reservoirs. In this paper, by establishing a discrete medium model of fracture-cavity carbonate reservoirs, the water injection and production dynamics of high-pressure injection wells are fitted and analyzed to obtain some reservoir parameters and oil-water flow rules, which will provide a good foundation for future high-pressure water injection policy.
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