LH油田WZ区块储层敏感性评价  

Reservoir Sensitivity Evaluation of WZ Block LH Oilfield

作　　者：杨雪[1] 曾勇 YANG Xue;ZENG Yong(Jingzhou University(College of Engineering&Technology,Yangtze University),Jingzhou 434023,China;Changqing Cementing Company of Chuanqing Drilling Company,Xi′an 710000,China)

机构地区：[1]荆州学院(原长江大学工程技术学院),湖北荆州434023 [2]川庆钻探长庆固井公司,陕西西安710000

出　　处：《河南化工》2022年第1期28-31,共4页Henan Chemical Industry

基　　金：湖北省教育厅科研项目(B2019366)。

摘　　要：LH油田WZ区块属于低孔低渗储层,由于该区块M31_(下)和M32层的储层物性极差导致产油量低,为了对该井采取正确合理的增产措施,需要对M31_(下)和M32层岩心进行敏感性评价实验。结果表明:该区块M31_(下)和M32层具有弱速敏性、极弱水敏性、弱盐敏性、中等偏弱盐酸敏感性、中等偏强土酸敏感性。因此,建议在后期开采时应添加黏土抑制剂防止水敏,控制注水速率避免敏感性矿物的微粒运移以及选择合适的酸液体系。WZ block of LH oilfield belongs to low porosity and low permeability reservoir,poor reservoir physical properties of the lower M31 and M32 in the block due to low oil production.In order to take correct and reasonable stimulation measures for this well,It isnecessary to carry out sensitivity evaluation experiment of the lower M31 and M32 cores.The results show that the lower M31 and M32 in the block have weak velocity sensitivity,extremely weak water sensitivity,weak salt sensitivity,medium to weak hydrochloric acid sensitivity,medium to strong soil acid sensitivity.Therefore,it is recommended the during later mining clay inhibitors should be added to prevent water sensitivity,control water injection rate to avoid particle migration of sensitive minerals and select appropriate acid system.

关 键 词：低渗储层 敏感性 损害程度 

分 类 号：TE34[石油与天然气工程—油气田开发工程]