鄂尔多斯盆地奥陶系古岩溶地貌及天然气富集特征

doi:10.11743/ogg19990208

Abstract

Abstract:

Palaeokarst landform developed in the top of Ordovician weathering crust in mideast Ordos Basin controls the reservoiring of natural gas and could be divided into 3 types such as karst highland,karst platform,karst basin and 9 sub types. The karst platform that underwent intense karstification is most favourable for gas enrichment;the terrace in the highland,the gentle hill in the platform and the remnant hill in karst basin are favorable areas of gas accumulation.High yield gas wells are located at the upper part of the slopes in both sides of the eroded karst flute.

Key words: palaeokarst landform, gas enrichment, weathered crust, Ordos Basin

Xia Riyuan, Tang Jiansheng, Guan Bizhu, Luo Weiquan, Ma Zhenfang, Zhou Shuxun, Yu Zhongping, Pan Linghong. ORDOVICIAN PALAEOKARST LANDFORM IN ORDOS BASIN AND GAS ENRICHMENT CHARACTERISTICS[J]. Oil & Gas Geology, 1999, 20(2): 133-136.

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ORDOVICIAN PALAEOKARST LANDFORM IN ORDOS BASIN AND GAS ENRICHMENT CHARACTERISTICS

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