东濮凹陷桥口气藏储层敏感性分析  

Gas reservoir rock sensibility analysis on Qiaokou gas reservoir in the Dongpu sag

作　　者：许书堂[1] 杨玉娥[1] 顾勤[1] 张海燕 

机构地区：[1]中国石化股份中原油田分公司勘探开发科学研究院,河南濮阳457001 [2]中国石油集团公司钻井工程技术研究院,北京100083

出　　处：《油气地质与采收率》2010年第3期90-92,共3页Petroleum Geology and Recovery Efficiency

基　　金：中国石油天然气总公司科技工程项目"东濮凹陷深层天然气勘探开发技术研究"(P01008)

摘　　要：东濮凹陷桥口气藏储层属低孔—特低孔、低渗透—特低渗透致密储层,在各种作业过程中,极易受到损害。研究储层的敏感性,提出相应的储层保护建议,对保护油气层,减少储层污染具有重要的指导意义。通过对桥口气藏储层中敏感性矿物种类、结构和含量的研究,分析了其潜在的敏感性。实验结果表明,桥口气藏储层敏感性总体为中等。储层速敏程度较弱;水敏程度中等偏强;盐酸酸敏程度极强,对氢氟酸、土酸和氟硼酸均没有表现出酸敏性;碱敏程度中等偏弱。因此,在对桥口气藏进行施工作业时,应把防止盐酸酸敏及水敏放在第—位,并兼顾其他敏感因素,有针对性地采取相应措施,将对气层的污染降至最小。Qiaokou gas reservoir is tight reservoir with low to very low porosity and permeability,which is easy to be impaired during field operations. Based on the study of the sensitivity of reservoir,we proposed the corresponding recommendation on reservoir protection,it has important guiding significance to protect the reservoir and reduce the reservoir pollution.By means of the study on sensitive mineral types, structures and content,and analysis of latent sensitivity,and the lab experiments on reservoir rock,the sensitivity results are obtained. The sensitivity of Qiaokou gas reservoir rock is generally medium.The flow rate sensitive degree of the reservoir rock is weak,and the water sensitive degree is medium strong,and the hydrochloric acid sensitive degree is very strong,however,no sensitivity occurs to the hydrofluoric acid,the hydrochloric- hydrofluoric acid and the fluoboric acid,moreover,the alkaline sensitive degree is medium weak. Therefore,when operation is done on Qiaokou gas reservoir,it should prevent the hydrochloric acid-sensitive and water-sensitive firstly, and should take into account of other sensitive factors so as to take corresponding measures to minimize the pollution of gas reservoir.

关 键 词：致密储层 敏感性 储层损害 储层保护 桥口气藏 东濮凹陷 

分 类 号：TE258[石油与天然气工程—油气井工程]