哈得油田储层特征及损害因素研究  

RESEARCH ON RESERVOIR CHARACTERISTICS AND DAMAGE FACTORS OF HUDSON OILFIELD

作　　者：许定达[1] 卢志明[2] 郭玲玲[3] 郝俊[4] 代宸宇 罗作飞 

机构地区：[1]长江大学,430100 [2]中国石油新疆油田公司勘探开发研究院 [3]青海油田钻采工艺研究院 [4]中石油青海油田分公司采油一厂开发地质研究所 [5]中国石油大学·北京 [6]青海油田公司采油三厂

出　　处：《钻采工艺》2017年第2期89-92,11,共4页Drilling & Production Technology

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”

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。To seek for solutions for production decline occurred during mid-later development stage at Hudson oilfield,research was conducted on the reservoir characterization and potential formation damage mechanism analysis to better protect the reservoir. Through pressure mercury analysis,X-ray diffraction,scanning electron microscopy and thin section analysis,the current reservoir porosity,permeability,pore throat structure,sensitive mineral content,temperature,pressure and oil-gas-water ratio were gathered,and the potential reservoir damage factors like solid phase damage,water sensitivity,salt sensitivity,acid sensitivity,alkali sensitivity,stress sensitivity and scaling were discussed in detail. Combing with the solid phase damage and sensitivity experiments, the main damages during drilling process at Hudson oilfield were defined as water sensitivity,salt sensitivity and solids invasion. Suggestions were then proposed for later drilling planning according to the research results,such as using temporary-plugging particles matching with the pore throat diameter,adjusting the salinity of the fluids introduced or flowing into the well and improving the current drilling fluid system. This research will provide basic information and theoretical basis for the subsequent development of Hudson oilfield.

关 键 词：岩心分析 潜在损害 敏感性 哈得油田 储层保护 

分 类 号：TE258[石油与天然气工程—油气井工程]