哈得油田储层特征及损害因素研究

发布时间：2019-02-28 13:47

【摘要】：为了解决哈得油田进入开发中后期产量递减问题,更好的开展储层保护工作,进行了哈得油田储层特征及损害因素研究。笔者主要通过压汞分析、X射线衍射、扫描电镜等方法分析和评估目前哈得油田储层特征,得到了当前储层孔隙度、渗透率、孔喉结构、敏感性矿物含量、温度、压力及油气水组分等参数,详细分析了储层潜在损害因素主要有固相损害、水敏、盐敏、酸敏、碱敏、应力敏以及结垢等伤害,结合敏感性实验和固相损害实验,确定了哈得油田钻井过程中主要损害机理为水敏、盐敏和固相侵入,提出了后期钻井过程中尽量使用与孔喉直径匹配的暂堵颗粒,同时控制入井流体的矿化度及改进目前钻井液体系等建议,为哈得油田后期钻井方案的制定提供基础材料和理论依据。
[Abstract]:In order to solve the problem of production decline in Hade oilfield in the middle and late stages of development, the reservoir characteristics and damage factors of Hade oilfield are studied in order to better carry out reservoir protection work. Based on the analysis of mercury pressure, X-ray diffraction and scanning electron microscopy, the reservoir characteristics of Hade oilfield are analyzed and evaluated, and the porosity, permeability, pore throat structure, sensitive mineral content and temperature are obtained. Pressure, oil, gas and water components and other parameters, the potential damage factors of reservoir are analyzed in detail, such as solid phase damage, water sensitivity, salt sensitivity, acid sensitivity, alkali sensitivity, stress sensitivity and scaling, combined with sensitivity test and solid phase damage test. The main damage mechanisms in the drilling process of Hade oilfield are water sensitivity, salt sensitivity and solid phase invasion, and the temporary plugging particles matching the diameter of pore throat are put forward in the late drilling process. At the same time, some suggestions such as controlling the salinity of well-entering fluid and improving the present drilling fluid system are proposed, which provide the basic materials and theoretical basis for the formulation of the drilling scheme in the later stage of Hade oilfield.
【作者单位】：长江大学;中国石油新疆油田公司勘探开发研究院;青海油田钻采工艺研究院;中石油青海油田分公司采油一厂开发地质研究所;中国石油大学;青海油田公司采油三厂;
【基金】：中国石油塔里木油田公司2013年度前期评价项目“哈得区块钻完井过程碎屑岩储层保护技术”
【分类号】：TE258

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