测井关键技术在勘探发现中的应用--以河套盆地临河坳陷为例  

Application of key logging technology in exploration and discovery.Application of key logging technology in exploration and discovery--Take the adjacent river depression of the Hetao Basin as an example

作　　者：檀玉松 罗安银 李思 王盛亮[2] 黄胜 张伟伟 李鹏涛 胡少华 Tan Yusong;Luo Anyin;Li Si;Wang Shengliang;Huang Sheng;Zhang Weiwei;Li Pengtao;Hu Shaohua

机构地区：[1]中国石油集团测井有限公司华北分公司 [2]华北油田巴彦勘探开发分公司

出　　处：《国外测井技术》2025年第1期43-51,I0001,共10页World Well Logging Technology

基　　金：中国石油天然气股份有限公司"基础性、前瞻性"重大攻关课题项目"河套盆地油气富集规律与勘探关键技术研究"(2021DJ0703)。

摘　　要：河套盆地油气勘探始于1977年,2018年在吉兰泰构造取得快速勘探突破;2020-2021年在兴隆构造取得重大勘探突破。该盆地为中、新生界叠合盆地,主要发育白垩系、古近系、新近系、第四系地层,分布吉兰泰、扎格、纳林湖、兴隆、沙布五大构造带。吉兰泰构造快速堆积砂砾岩储层近物源、快速堆积、分选差,储层厚度大但有效储层划分难,本文通过确定常规测井泥质含量敏感曲线,构建中子-密度泥质含量计算模型,并基于核磁测井建立细组分电阻率校正模型,提高储层参数计算精度。兴隆构造咸化湖低阻油藏测井流体识别难度大,存在高矿化度地层水和高束缚水含量的低阻油层,阵列感应测井电阻率数值和侵入特征差异大。利用阵列感应-双侧向联测技术在临华1井非典型油层的流体识别中效果显著,该井的成功解释对勘探方向转移意义重大。在兴华1井通过以核磁共振为核心的“核磁+阵列感应”孔隙结构量化表征与咸化湖低阻油层识别技术成功解释,试油获得日产274.08m3高产工业油流,助力取得重大勘探突破。在中深储层通过建立基于核磁孔隙结构产能预测模型有效指导试油选层,有力支撑洼槽区深层勘探和持续发现。2021、2022年在兴隆构造上交探明储量逾2亿吨。The oil and gas exploration in Hetao Basin started in 1977,made a rapid breakthrough in Gilantai structure in 2018,and a major breakthrough was made in Xinglong Structure in 2020-2021.This basin is a middle and Cenozoic overlapping basin,mainly developing Cretaceous,Paleogene,Neogene and Quaternary strata,and distributed in five tectonic belts:Gilantai,Zager,Narin Lake,Xinglong and Shabu.Ji lantai structure rapid accumulation of gravel reservoir near source,rapid accumulation,sorting,large reservoir thickness but effective reservoir division is difficult,through the conventional logging mud content sensitive curve,build the neutron-density mud content calculation model,and establish a fine component resistivity correction model based on nuclear magnetic logging,to improve the calculation accuracy of reservoir parameters.It is difficult to identify the logging fluid of low resistance reservoir of salt Lake in Xinglong structure,there are low resistance oil layer with high mineral degree formation water and high bound water content,and the resistivity value and intrusion characteristics of array induction logging differ greatly.The array induction-dual lateral combined test technology is effective in the fluid identification of atypical oil layer of Lihua 1 well.The successful interpretation of this well is of great significance for the transfer of exploration direction.In well Xinghua 1,through the quantitative characterization of the pore structure of"nuclear magnetic+array induction"with NMR as the core and the identification technology of low resistance oil layer in Xianhua Lake,the oil test obtained 274.08m3 daily 274.08m3 high-yield industrial oil flow,which helped to achieve a major exploration breakthrough.In the medium and deep reservoir,the production capacity prediction model established based on the nuclear magnetic pore structure can effectively guide the oil test layer selection,and strongly support the deep exploration and continuous discovery in the trough area.In 2021 and 2022,the proved reserves o

关 键 词：临河坳陷 核磁共振 测井技术 双电联测 勘探突破 

分 类 号：P61[天文地球—矿床学]