塔里木盆地哈得逊地区氦气分布特征及成藏模式  

Helium distribution characteristics and accumulation pattern in Hadexun area,Tarim Basin

作　　者：张海祖 刘佳润[4] 张文 李朋朋 黄少英[1,2,3] 吕佳豪 张慧芳 朱必清[4] 娄洪 ZHANG Haizu;LIU Jiarun;ZHANG Wen;LI Pengpeng;HUANG Shaoying;LYU Jiahao;ZHANG Huifang;ZHU Biqing;LOU Hong(R&D Center for Ultra-Deep Complex Reservoir Exploration and Development,CNPC,Korla 841000,China;Engineering Research Center for Ultra-deep Complex Reservoir Exploration and Development,Xinjiang Uygur Autonomous Region,Korla 841000,China;Research Institute of Petroleum Exploration and Development,Tarim Oilfield Company,PetroChina,Korla 841000,China;School of Earth and Space Sciences,Peking University,Beijing 100871,China;State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国石油天然气集团有限公司超深层复杂油气藏勘探开发技术研发中心,新疆库尔勒841000 [2]新疆维吾尔自治区超深层复杂油气藏勘探开发工程研究中心,新疆库尔勒841000 [3]中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000 [4]北京大学地球与空间科学学院,北京100871 [5]中国科学院地质与地球物理研究所,北京100029 [6]中国科学院大学,北京100049

出　　处：《天然气地球科学》2025年第3期444-454,共11页Natural Gas Geoscience

基　　金：国家自然科学基金(编号:U2244209,42203027);中国石油天然气集团有限公司科学研究与技术开发项目(编号:2021ZG13);塔里木盆地新能源普查及基础地质研究(Ⅰ)(编号:T202201)联合资助.

摘　　要：塔里木盆地哈得逊地区石炭系原油伴生气中氦气含量为0.15%~0.70%,平均为0.32%,氦气剩余地质储量为523.65×104 m3,属于中型富氦气田。其中3个区块氦气含量差异显著。HD4区块氦气含量最高,为0.62%~0.69%(平均为0.66%,N=2),HD113区块次之,为0.20%~0.44%(平均为0.34%,N=4),HD1区块最低,为0.15%~0.70%(平均为0.27%,N=17)。氦气含量的平面分布主要受深大断裂控制。2套含油气系统的氦气含量也存在较大差异。相比于卡拉沙依组薄砂岩(0.15%~0.44%,平均为0.24%,N=12),下伏巴楚组东河砂岩氦气含量(0.15%~0.70%,平均为0.40%,N=11)更高。氦气含量的纵向分布受氦系统的源储配置控制。根据气体组成特征、烷烃碳同位素特征、成因法计算结果以及地震资料解译,哈得逊地区石炭系原油伴生气中氦气为玉尔吐斯组页岩、侵入岩和古老基底共同贡献。厚层卡拉沙依组泥岩(超过130 m)为氦气的有效保存提供了良好的封闭条件。哈得逊地区氦气成藏为“两近捕氦模式”,即距离深大断裂越近,距离下伏氦源岩越近,储层中氦气含量越高。The helium content in the Carboniferous oil-associated gases in the Hadexun area of Tarim Basin are as high as 0.15%-0.70%,with an average of 0.32%,much higher than the lower limit of current economic grade for helium extraction(0.05%),and the remaining geological reserves of helium are 523.65×104 m3,which is a medium-sized helium-rich field.There are significant differences in helium content among the three blocks.On plane,different zones in this oilfield show diverse helium contents.Zone HD4 has the highest helium contents,from 0.62%to 0.69%(average 0.66%,N=2);followed by Zone HD113 and Zone HD1,from 0.20%to 0.44%(average 0.34%,N=4)and from 0.15%to 0.70%(average 0.27%,N=17),respectively.The planar distributions of helium contents are primarily controlled by the distributions of deep-seated faults.Vertically,there are remarkable differences in helium content of the two suites of gas-bearing systems.Relative to thin sandstones from the Kalashayi Formation(0.15%-0.44%,average 0.24%,N=12),the Donghe sand⁃stones from the Bachu Formation have the greater helium content(0.15%-0.70%,average 0.40%,N=11).The vertical distribution of helium contents is controlled by the source and reservoir configurations of helium sys⁃tematics.According to gas composition characteristics,carbon isotope characteristics of alkane gas,genetic cal⁃culation results and seismic data interpretation,the helium in the Hadexun area is contributed by Yurtus Forma⁃tion shale,intrusive rocks and ancient basement.The Kalashayi Formation mudstone with a thickness of more than 130 m provides good sealing conditions for the effective preservation of helium.In summary,helium accu⁃mulation in the Hadexun area follows the“two-near helium-capturing model”,namely,the closer to both deepseated faults and underlying helium source rocks,the higher helium content in reservoirs.

关 键 词：富氦天然气 哈得逊地区 成藏模式 两近捕氦模式 

分 类 号：TE121.1[石油与天然气工程—油气勘探]