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| 1 | 鄂尔多斯盆地中东部下古生界奥陶系自生自储气地球化学特征显示文摘对鄂尔多斯盆地下古生界气源的争议已有30多年,主要观点包括以上古生界煤成气为主和以下古生界海相油型气为主。近年来学者们通过分区域、分层位研究,认为盆地不同地区由于源储配置情况有异,盆地不同地区下古生界气中上、下古生界来源气混源比例不同,应分别讨论。细化的研究使下古生界气源问题的争议得到了一定程度的调和,但同时混源比例计算等也使得2个前提问题变得尤为重要:1下古生界是否存在自生自储气;2下古生界自生自储气地球化学特征如何。结合测井数据对近年来最新勘探井的下古生界烃源岩进行了评价,证实了下古生界有效烃源岩的存在。通过对奥陶系马家沟组盐下(奥陶系马五6巨厚膏盐岩以下)天然气地球化学特征与盐上(上古生界及奥陶系风化壳)天然气组分、碳同位素对比,指出下古生界海相烃源岩原生气具有δ^(13)C_1<-35‰、δ^(13)C_2<-28‰的特征。 | 刘丹 冯子齐 刘洋 彭威龙 韩文学 | 2016 | 天然气地球科学2016，27，10： | 6 |
| 2 | Natural gas releasing simulation experiment of coal in process of temperature decreasing and decompression and preliminary application in Ordos Basin显示文摘Natural gas releasing simulation experiments were carried out in laboratory for researching the gas storage capacity in state of high temperature and high pressure and its gas releasing potential in process of temperature decreasing and decompression. The exiting phase state was studied through measuring gas adsorption of coal and PVT phase calculating of natural gas. Gas volume, gas molecular and isotope compositions in process of temperature decreasing and decompression were measured, natural-gas yields released from the Upper Paleozoic coal strata after later Cretaceous (K3) were calculated and the formation of the reservoir was studied combining with the geological background. The results indicate that natural gas stored in coal has still bigger releasing potential after the uplift of Upper Paleozoic strata. There exists a weak gas supply-effluent equilibrium in the reservoir of Ordos Basin, which is another possible evidence that the Upper Paleozoic gas reservoir may be a deep basin gas reservoir. | WANG Yunpeng PENG Ping'an LU Jialan LIU Dehan | 2004 | Chinese Science Bulletin2004，49，S1： | 0 |
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