自然伽马能谱测井在阜新盆地沙海组下段油层的应用——以辽阜地2井为例  

APPLICATION OF NATURAL GAMMA-RAY SPECTROMETRY LOGGING IN THE LOWER SHAHAI FORMATION IN FUXIN BASIN:A Case Study of LFD-2 Well

作　　者：张德军[1,2] 张晓川 赵洪伟 陈树旺[1] 张健[1] ZHANG De-jun;ZHANG Xiao-chuan;ZHAO Hong-wei;CHEN Shu-wang;ZHANG Jian(Shenyang Center of China Geological Survey,Shenyang 110034,China;Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China;Liaoning Geology and Mineral Survey Institute Co.,Ltd.,Shenyang 110032,China)

机构地区：[1]中国地质调查局沈阳地质调查中心,辽宁沈阳110034 [2]中国地质科学院地质研究所,北京100037 [3]辽宁省地质矿产调查院有限责任公司,辽宁沈阳110032

出　　处：《地质与资源》2023年第2期218-224,200,共8页Geology and Resources

基　　金：国家自然科学基金项目“石炭纪—三叠纪陆地生态系统的演变”(42294328014);中国地质调查局项目“东部重点盆地新区新层系油气资源调查评价”(DD20230022)、“东北地区地层古生物地质调查”(DD20230220)。

摘　　要：阜新盆地油气调查与勘探历史悠久,油气发现虽多,有的井甚至初期获得了少量产能,但却无一持续稳产. 2017年,辽阜地2井在阜新盆地沙海组下段获得了高产工业油流,日产15.3 m3,实现了油气调查勘探的重大突破.为了深入研究阜新盆地沙海组下段的地层特性,运用自然伽马能谱测井资料,对辽阜地2井沙海组下段的泥质含量、黏土矿物类型以及沉积环境等进行分析,明确了沙海组下段的泥质含量及其变化情况,查明沙海组下段形成于氧化与弱还原交互的沉积环境,水动力条件弱(以低能为主).本研究为进一步认识沙海组下段储层特征提供了依据,有助于阜新盆地后续的油气勘探及理论研究.The oil-gas survey and exploration in Fuxin Basin has a long history.Despite quite a few oil-gas discoveries and even low production obtained from some wells in the beginning,none of them have sustainable and stable production.In 2017,high-yield industrial oil flow was obtained from LFD-2 well in the Lower Shahai Formation of Fuxin Basin,with a daily production of 15.3 m3,achieving a major breakthrough in oil-gas survey and exploration.To further study the stratigraphic characteristics of Lower Shahai Formation in Fuxin Basin,the natural gamma-ray spectrometry logging data are used to analyze the shale content,clay mineral type and sedimentary environment of Lower Shahai Formation in LFD-2 well,which ascertains the shale content and its variation.It is concluded that the Lower Shahai Formation was formed in a sedimentary environment of interactions between oxidation and weak reduction,with weak hydrodynamic conditions(mainly low energy).The study provides a basis for further understanding of the reservoir characteristics of Lower Shahai Formation and contributes to the following oil-gas exploration and theoretical research in Fuxin Basin.

关 键 词：阜新盆地 下白垩统 沙海组 自然伽马能谱 黏土矿物 沉积环境 辽宁省 

分 类 号：P631.8[天文地球—地质矿产勘探] P618.13[天文地球—地质学]