摘要
为了确定鄂尔多斯盆地上古生界天然气的成藏时间,采用了流体包裹体测温技术方法。通过对大量流体包裹体特征的观察研究,发现研究区上古生界流体包裹体的类型主要为盐水包裹体、烃类包裹体和CO_2包裹体。流体包裹体均一温度、冰点、盐度的测试结果表明研究区上古生界天然气充注与成藏期次主要有2期,分别介于150~142Ma、123~120Ma左右。第三温度区间流体包裹体的含量明显高于其它区间,表明其对应的第二期烃类物质运移是本区天然气最重要的成藏期。
Thermometry of fluid inclusions was adopted in order to ascertain the time of gas pool formation in the Upper Paleozoic in Ordos Basin. It is discovered that main types of fluid inclusions of the Upper Paleozoic in Ordos Basin include: brine inclusions, organic inclusions and CO2 inclusions, by observation on characteristics of a great deal of fluid inclusions. The results of testing on homogeneous temperature, freezing point and salinity of fluid inclusions in the researched area have showed that there are 2 stages (150-142Ma and 123-120Ma) of gas infusion and gas pool formation in the Upper Paleozoic. Quantity of fluid inclusions in the third thermal stage is much more than that of the other thermal stage, which indicates that the second stage of hydrocarbon transportation is the most important stage of gas pool formation in Ordos Basin.
出处
《山东科技大学学报(自然科学版)》
CAS
2006年第2期20-22,26,共4页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家重点基础研究发展规划项目("973")资助项目(2003GB214603)