苏丹M盆地萨加隆起储层包裹体特征与地热史研究  

STUDY ON THE CHARACTERISTICS OF RESERVOIR INCLUSION AND THERMAL HISTORY STUDYING IN SAJIA RISE OF M BASIN,SUDAN

作　　者：罗小平[1] 王伟栋[2] 祖颖[2] 沈忠民[1] 

机构地区：[1]成都理工大学"油气藏地质及开发工程"国家重点实验室,四川成都610065 [2]中原油田分公司勘探开发科学研究院,河南濮阳457001

出　　处：《矿物岩石》2003年第1期70-73,共4页Mineralogy and Petrology

摘　　要：通过对苏丹 M盆地的油气包裹体与盐水包裹体的系统研究发现该区以石英包裹体为主 ,长石包裹体较少。由于成岩作用较弱 ,石英次生加大边不发育 ,原生包裹体少见 ,工业油流井以油气包裹体为主 ,含量大于 70 % ,盐水包裹体小于 30 %。包裹体均一化温度和盐度研究表明 ,该盆地有 3次大规模的流体运动 ,两次与油气运聚有关 ,一次可能与深部热流体运动有关。经过石英次生加大边原生包裹体均一温度对该盆地古地温进行恢复发现在白垩系末古地温梯度为 3.0℃ /10 0 m,与现今地温梯度 2 .6℃ /10 0 m相比略高 。Research on the character of oil gas and salt water inclusions in the M basin of Sudan revealed that the inclusions were mainly quartz inclusions with minor feldspar inclusions.However,the primary inclusions were rare because of the poorly developed diagenesis and secondary enlargement of quartz.The oil gas inclusions in the conmercial wells accounted for over 70% while salt water inclusions made up the rest 30%.The study of homogeneity temperature and salinity of inclusions indicated that there were 3 large scale fluid movements,of which two of them were related to the migration and accumulation of oil and gas,one was involved in the thermal solution in the depth.Paleo geothermometer determined by homogeneity temperation from the inclusions in the quartz secondary enlargement rims showed that the geothermal gradient during the late Cretaceous was 3.0°/100 m.

关 键 词：储层 包裹体 均一温度 地热史 萨加隆起 

分 类 号：P618.130.2[天文地球—矿床学] TE121.12[天文地球—地质学]