【摘要】 鄂尔多斯盆地苏里格气田是一个地质储量为5336.52×108m3、含气面积为4054.6km2的大气田,同时也是一个低丰度储量、开发难度大的气田。对该气田低效形成机理的研究结果表明,储集体内部非均质性强,平缓构造背景导致气柱高度小,因而气层连通性变差,异常低压使天然气穿透流动能量不足,这些是导致气藏低效的主要因素。更多还原

【Abstract】 Sulige Gas Field is the largest gas field with reserves in place of 533.652 billion cubic meters and gas-bearing area of 4054.6 square kilometers in Ordos Basin.It is a low-efficiency gas field with low reserves abundance.The forming mechanism of low-efficiency gas reservoir in Sulige Gas Field was researched.The geological factors resulting in low-efficiency gas reservoirs in Sulige Gas Field include the strong anisotropies in the reservoir,low height of gas column resulted from very gentle structures,poor connectivity and low energy induced by ultra-low pressure in gas pay zones.更多还原