论文部分内容阅读
以油气成藏地质学理论为基础,将鄂尔多斯盆地西部庆阳地区与盆地内已发现的其它大气田的生烃潜力条件、储层特征、构造特征以及成藏组合条件等成藏地质条件对比,并结合实际的钻井勘探,认为庆阳地区上古生生界具有良好的探明天然气储量的潜力,西部天环凹陷区有可能发育岩性与构造性天然气藏、东部伊陕斜坡向斜区有可能发育岩性气藏。根据成藏条件对比结果,研究认为庆阳地区上古生界预测可实现的天然气探明储量可大于5 000×108m3。
Based on the theory of hydrocarbon accumulation geology, the authors compared the hydrocarbon generating potential conditions, reservoir characteristics, structural characteristics and reservoir-forming combination conditions in the Qingyang area in the western Ordos Basin and other gas fields found in the basin with the geological conditions of hydrocarbon accumulation. Combined with the actual drilling exploration, it is considered that the Upper Paleozoic Mesozoic in Qingyang has the potential of proven natural gas reserves. Lithological and structural natural gas reservoirs are likely to develop in the Tianhual depression of the western part of China and the eastern slope of the Yi-Shan slope may develop Lithologic gas reservoir. According to the comparisons of reservoir-forming conditions, the study shows that the available proven gas reserves of Upper Paleozoic in Qingyang area can be larger than 5 000 × 108 m3.