西安科技大学学报2013，Vol.33Issue(2)：149-155,7.
鄂尔多斯盆地东部临县-兴县地区山西组煤成气勘探潜力分析
Coal-derived gas exploration potential analysis of Shanxi Formation in Linxian-Xingxian County of eastern Ordos Basin
解东宁 1陈玉良 1张文卿 1郑懿 1梁积伟1
作者信息
摘要
Abstract
Comprehensive researches on the petrological characteristics and logging curves of 33 wells of Shanxi Formation in Linxing County, eastern part of the Ordos Basin, we identified sedimentary facies and microfacies of Shanxi Formation, and studied the spatial distribution of the main reservoir sand bodies. Based on coal accumulation characteristics and coal seam thickness map of Shanxi Formation, We forecasted the favorable area of coal-derived gas. The study results show that Shanxi Formation in Lin-xing area was the coal-derived gas potential area because of the big thickness and stable distribution of the coal seam, type Ⅲ kerogen, high total organic carbon content ( TOC) (range of 70. 8% ~ 83. 2%), high abundance of organic matter, and high vitrinite reflectance ( Ro ) values ( 0. 7% ~ 1.5% ) . The Shan 23 Beichagou sandstone of the lower Shanxi Formation was the most favorable reservoir of coal-derived gas exploration target for its wide sand body distribution, big thickness, which was beneficial to coal-derived gas reservoir. According to the comprehensive researches on the sedimentary facies, sand body thickness, seam thickness and hydrocarbon generation capacity of Shanxi formation, two types favorable exploration area of coal-derived gas was distinguished, i. e. class Ⅰ and Ⅱ. There are one of Class I favorable exploration area and two of Class Ⅱ.关键词
煤成气/沉积相/砂体展布/鄂尔多斯盆地/临县-兴县地区Key words
coal-derived gas/sedimentary facies/sand body distribution/Ordos Basin/Linxian-Xingxian分类
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解东宁,陈玉良,张文卿,郑懿,梁积伟..鄂尔多斯盆地东部临县-兴县地区山西组煤成气勘探潜力分析[J].西安科技大学学报,2013,33(2):149-155,7.
