渤海A油田储层敏感性评价及油气层保护技术  

Sensitivity evaluation and reservoir protection technology of Bohai A oilfield

作　　者：孙少川[1] 彭芳芳[2] 任彬 燕收广[2] 田宇[1] 

机构地区：[1]长江大学地球科学学院,湖北武汉430100 [2]中石化河南油田分公司石油工程技术研究院,河南南阳473132 [3]长庆油田第四采气厂,内蒙古鄂尔多斯017300

出　　处：《能源与环保》2017年第7期122-126,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

摘　　要：渤海A油田开采过程中出现了欠产现象,通过对该油田储层岩性、储层物性、黏土矿物含量以及流体特征的分析研究,并结合储层敏感性评价及典型井酸化处理前后产量变化情况的分析结果,提出了针对性的油气层保护技术措施。储层敏感性评价结果表明:储层临界流速为3 mL/min,为中等偏强速敏;临界矿化度为4 038.5 mg/L,具有强水敏效应;临界pH值为11,储层具有弱碱敏;盐酸和土酸敏感性评价结果为无酸敏,为可酸化处理地层。在油田后期开发过程中,应结合油田的实际情况,合理选择相应的油气层保护技术措施,包括前期钻井、完井液的选择、生产过程的控制以及增产措施的选择,为确保油田后期稳产增产开发提供技术保障。According to the phenomenon of shortfall in output process of Bohai A oilfield exploitation,the authors studied the reservoir lithology,reservoir properties,clay mineral content and fluid characteristics,and combined with the results of yield changes before and after the reservoir sensitivity evaluation and typical wells acidizing treatment,corresponding technical measures of reservoir protection were put forward in this paper. Reservoir sensitivity evaluation results showed that,reservoir critical velocity is 3 m L/min,medium to strong velocity sensitivity; critical salinity is 4 038. 5 mg/L,with strong water sensitivity; critical pH value is 11,the reservoir has weak sensitivity; evaluation of the hydrochloric acid and mud acid sensitivity results for acid sensitive to acidification and formation. In the process of oilfield development,it should choose a reasonable f reservoir protection and corresponding technology combined with the actual situation of oil field,including pre drilling and completion fluid selection,production process control and stimulation of choice,in order to ensure the stable development of oilfield production and provide technical support.

关 键 词：渤海A油田 敏感性 储层特征 油气层保护 稳产增产 

分 类 号：TE155[石油与天然气工程—油气勘探]