西南石油大学学报（自然科学版）Issue(1)：1-9,9.DOI:10.11885/j.issn.1674-5086.2014.02.15.01
鄂尔多斯盆地东缘上古生界页岩特征及含气量
Characteristics and Calculation Method for Gas Content of Upper Paleozoic Shales in the Eastern Margin of Ordos Basin
摘要
Abstract
Shale sequences are well developed in the Carboniferous-Permian transition facies,Ordos Basin. Researchers have done many studies on shales in upper Paleozoic of the Ordos Basin. With few drilling data,however,not enough researches have been carried out on the eastern margin of the basin. In order to clarify the characteristic and gas bearing of shales in the eastern margin of the basin,according to the characteristic of sedimentary,geochemistry,lithology,physical property and the experiments of isothermal adsorption and nuclear magnetic resonance of samples from Taitou,the shales were analyzed. It is found that Taiyuan formation has the best condition for shale gas formation which is 25 meters thick,abundant in organic matter,and is in the stage of producing gaseous hydrocarbon,the shale is of high content of non swellable clay minerals and equally distributed crack/micro fractures. We also offer the calculation formula of gas adsorption using parameters of depth and content of organic carbon and improve the calculation accuracy of free volume through calculating effective porosity. It has been verified that the calculation of air content conforms to the actual situation,and the method is simple and practical by relevant data from Well Y88 in Ordos Basin.关键词
泥页岩/吸附气量/游离气量/上古生界/鄂尔多斯盆地东缘Key words
shale/adsorpted gas content/free gas content/upper Paleozoic/east margin of Ordos Basin分类
能源科技引用本文复制引用
郭少斌,赵可英..鄂尔多斯盆地东缘上古生界页岩特征及含气量[J].西南石油大学学报（自然科学版）,2016,(1):1-9,9.基金项目
国土资源部“全国油气资源战略选区调查与评价”专项（2009QYXQ150705）。 （）
