陕北富县地区三叠系延长组长8致密油藏测井评价  

Logging Evaluation of Tight Reservoir: A Case Study of Chang 8 Group of Triassic Yanchang Formation in Fuxian Area, North Shaanxi

作　　者：郭兰[1] 丁超[2] 袁亚飞[1] 马志武[1] 王奇[1] 

机构地区：[1]延长油田股份有限公司 [2]西安石油大学地球科学与工程学院

出　　处：《国外测井技术》2016年第6期18-21,3,共4页World Well Logging Technology

基　　金：陕西省教育厅专项科研计划项目(16JK1599);西安石油大学博士科研启动基金项目(2014BS04);延长油田股份有限公司科研项目(ycsy2013ky-A-01)联合资助

摘　　要：富县地区延长组长8油层组为特低孔-超低渗致密储层,其含油性的精确评价成为油田稳产增储的关键因素。通过测井系列中自然伽马(GR)、深感应电阻率(RILD)、声波时差(AC)等对致密油藏有敏感反应的测井曲线分析,利用英制AC与R_(ILD)重叠图技术、AC与R_(ILD)交会图法、GR与R_(ILD)交会图法、R_(ILD)×AC与GR交会图法,对研究区长8致密油层进行定性-定量分析,并建立相应的识别图版。同时以富县地区FX84等为例,油层的识别与试油结论具有较好的对应,验证了图版的可靠性。因此,长8致密油藏的定性-定量测井评价分析为陕北富县地区长8油层组油水分布规律研究以及滚动开发部署提供了理论依据。The results show that the reservoir of Chang 8 Member is low porosity- ultra-low permeability reservoir in Fuxian area, the key factor is new oil layer discovery for increasing reserves and stabilizing productivity. Based on the logging characteristic analysis of natural gamma ray logging series(GR), deep induction resistivity(RILD), the oil reservoir of Chang 8 group is quantitative and qualitative analysis, and establish the corresponding identification chart with the overlapping graph of AC and RILD, the cross plot of AC and RILD, GR and RILD, RILD x AC and GR. The logging interpreting model is correct with the test and verify of FX84. Therefore, the quantitative logging evaluation of the Chang 8 Member provides a theoretical basis for the research of oil-water distribution and development in Fuxian area, North Shaanxi.

关 键 词：富县地区 长8油层组 致密油藏 重叠图 交会图 测井评价 

分 类 号：TE121[石油与天然气工程—油气勘探]