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.
出处
《矿物岩石》
CAS
CSCD
北大核心
2003年第1期70-73,共4页
Mineralogy and Petrology
关键词
储层
包裹体
均一温度
地热史
萨加隆起
reservoir
inclusion
homogeneity temperature
geothermal history
Sajia rise
