成都理工大学学报（自然科学版）2017，Vol.44Issue(1)：43-47,5.DOI:10.3969/j.issn.1671-9727.2017.01.06
鄂尔多斯盆地西北部奥陶系“三元”主控成藏规律
Analysis of three controlling regularities on the Ordovician gas accumulation in the northwest Ordos Basin,China
摘要
Abstract
The gas accumulation regularity is analyzed by studying the hydrocarbon source rocks,the characteristics of reservoir and the distribution of Ordovician oil and gas in the northwest Ordos Basin.The Ordovician hydrocarbon source rocks mainly distribute in the Upper Ordovician Wulalike Formation and Lashizhong Formation with mud and grey mud as main lithology,and reservoirs occur in the Kelimoli Formation and Zhuozishan Formation of Middle Ordovician.Based on the rock type and pore combination characteristics,the Ordovician reservoirs can be divided into the karst vug reservoir and dolomite intergranular pore reservoir.The gas accumulation is mainly controlled by 3 factors of hydrocarbon source rock,reservoir and trap,respectively.The effective hydrocarbon source rocks control the regional distribution of the gas,the high quality reservoirs control the gas zones and the effective trap controls the gas accumulation characteristics.It shows that the oil type gas is in the west of the study area and the coal type gas is in the east.The gas mainly formed in the upper stratum and trapped and accumulated in the lower stratum.关键词
奥陶系/生烃强度/有效圈闭/油气成藏/鄂尔多斯盆地Key words
Ordovician/hydrocarbon-generating strength/effective trap/hydrocarbon accumulation/Ordos Basin分类
能源科技引用本文复制引用
束宁凯,汪新文,郭建平..鄂尔多斯盆地西北部奥陶系“三元”主控成藏规律[J].成都理工大学学报（自然科学版）,2017,44(1):43-47,5.基金项目
国家科技重大专项（2011ZX05028）；国家自然科学基金项目（51374186）。 （）
