塔河油田碳酸盐岩缝洞型油藏远井储集体定量化表征及动用技术  

Study on quantitative characterization and production technology of far-well carbonate fracture-cavity reservoir in Tahe Oilfield

作　　者：梁健[1] 王栋[1] 张鑫[1] 付亚飞 Liang Jian;Wang Dong;Zhang Xin;Fu Yafei(No.2 Oil Extraction Plant,Sinopec Northwest China Petroleum Bureau,Luntai 841600,Xinjiang,China)

机构地区：[1]中国石化西北油田分公司采油二厂,新疆轮台841600

出　　处：《地质学刊》2021年第1期29-36,共8页Journal of Geology

基　　金：“十三五”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”(2016ZX05053);中国石化“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”(ZDP17003)。

摘　　要：塔河油田奥陶系碳酸盐岩储层主要储集空间为溶洞和裂缝,直接钻遇溶洞比例达50%。针对目前远井储集体特征认识模糊、动用难度大等问题,基于物质平衡原理及注水指示曲线、液面恢复曲线等资料,对远井储集体的规模、裂缝导流系数、地层能量进行定量化研究,形成了一套远井储集体参数定量化表征技术。基于远井储集体特征,运用酸化、高压注水、复合措施等方法提高对远井储集体的动用,并在塔河油田推广应用,高效井占75%以上,有较好的应用前景。Karst caves and fractures are the main reservoir spaces in Ordovician carbonate reservoirs in Tahe Oilfield, and the proportion of karst caves discovered by direct drilling reaches 50%. Aiming at the problems of unclear understanding of the characteristics of far-well reservoir and difficulty in using it, based on material balance principle, water injection indication curve, liquid level build-up curve and other data, the scale, fracture conductivity coefficient and strata energy of far-well reservoir were quantitatively studied, and a set of quantitative characterization technology of far-well reservoir parameters was formed. Based on the characteristics of far-well reservoir, the methods such as acidification, high pressure water injection and compound measures were used to improve the utilization of far-well reservoir, and applied in Tahe Oilfield, with high efficiency wells accounting for more than 75%, indicating a good application prospect.

关 键 词：碳酸盐岩储层 远井储集体 定量化表征 动用技术 塔河油田 

分 类 号：P618.1305[天文地球—矿床学]