摘要
鄂尔多斯盆地东部是长庆油田天然气勘探开发主要产能建设区域。上古生界砂岩气藏为典型的致密储层,具有低孔、特低渗的地质特点,储层物性的非均质性、气水关系复杂等难题制约了对气层的认识。通过对具有代表性的井筒资料进行分析并总结规律,引入灌满指数及核磁技术,从多角度完善不同地区、层系的解释图版等措施,为现场储层评价提供了有效的技术支撑。2020年共解释9920m/1720层,提出试气建议3752m/484层,试气230层,涉及55口井。经试气成果验证,符合193层,录井解释符合率83.91%,提高了近8个百分点,取得了较好的效果。
The eastern part of Ordos Basin is the main productive area of natural gas exploration and development in Changqing Oilfield.The upper Paleozoic sandstone gas reservoir is a typical tight reservoir,with the geological characteristics of low porosity and ultra-low permeability.The heterogeneity of reservoir physical properties and the complex gas-water relationship restrict the understanding of gas reservoirs.Through the analysis and summary of representative wellbore data,the filling index and nuclear magnetic technology are introduced to improve the interpretation chart of different regions and strata from multiple angles,which provides effective technical support for the field reservoir evaluation.In 2020,a total of 9920 m/1720 zones were interpreted,and a gas test proposal of 3752 m/484 zones was put forward,and 230 zones were tested,involving55 Wells.The result of gas test shows that it conforms to layer 193,and the coincidence rate of logging interpretation is 83.91%,which increases by nearly 8 percentage points.
作者
肖刚
钟志华
赵岩
张朝华
黄俊莲
郭素杰
张哲
Xiao Gang;Zhong Zhihua;Zhao Yan;Zhang Zhaohua;Huang Junlian;Guo Sujie;Zhang Zhe(No.2 Mud logging Company,BHDC,CNPC,Renqiu Hebei 062550)
出处
《中外能源》
CAS
2021年第S01期24-31,共8页
Sino-Global Energy
关键词
鄂尔多斯盆地
气水关系
灌满指数
核磁技术
解释符合率
Ordos basin
Gas-water relationship
Filling index
Nuclear magnetic technology
Explain the coincidence rate
