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异常压力天然气藏(Anomalously Pressurd Gas,APG),主要指“盆地中心”天然气系统(BCGS)中,天然气含量丰富,但开发程度相对较低的天然气资源。例如,美国怀俄明州Wind River盆地的面积约为8500mi~2,其USGS异常压力天然气资源量估计是900Tcf,但目前产气量累积不足1Tcf。丰富的天然气资源与开发程度的不平衡在所有“盆地中心”异常压力天然气藏中是很典型的。因此,对于蕴藏在BCGS中极其丰富的天然气资源,尚待更为有效的开发。过去,开发APG资源困难且昂贵,但最近怀俄明州Creater Green River和Wind River盆地的开发成功,以及早些时候阿尔伯达、Denver-Julesburg和San Juan盆地的成功开发均表明,更为有效的开发是做得到的。最重要的是,当异常压力天然气藏的开发取得成功的时候,财政上的回报是显著的。为了更充分地开发盆地中心APG资源,大幅度提高天然气资源转换为能源储量的比率和数量,则需要新的和更富有创新性的开发策略、技术和判断方法。 经过多年的努力,天然气新技术开发公司(IDT)的研究团队已经研发出一系列高效勘探和开发异常压力天然气藏的新的有效方法。应用IDT技术可以在钻井之前为开发者提供下列必要的信息:(1)天然气饱和的岩石/流体系统的空间分布,包括压力封存箱边界;(2)区域压力界面或正常和异
Anomalously Pressurd Gas (APG) mainly refers to natural gas resources (BCGs) with rich natural gas but relatively low development level. For example, the Wind River Basin, Wyoming, USA, has an area of about 8500 m 2 and estimates an abnormal gas resource of 900 GTc for the USGS. However, it currently accumulates less than 1 Tcf of gas. The imbalance between abundant natural gas resources and development level is typical in all the “pressure-relief” gas pools in the “basin center”. Therefore, there is a need for more effective development of the extremely rich natural gas resources contained in the BCGS. In the past, the development of APG resources was difficult and expensive, but the recent successful development of the Creater Green River and Wind River basins in Wyoming and the earlier successful development of the Alberta, Denver-Julesburg and San Juan basins showed that more efficient development Is done. Most importantly, the financial rewards are significant when the development of abnormal pressure gas reservoirs succeeds. In order to more fully develop APG resources at the basin center and substantially increase the rate and volume of natural gas resources converted to energy reserves, new and more innovative development strategies, techniques and judgments are required. After many years of hard work, the research team of the Natural Gas New Technology Development Company (IDT) has developed a series of new and effective methods for the efficient exploration and development of abnormal pressure gas reservoirs. Using IDT technology, developers can be provided with the following necessary information prior to drilling: (1) Spatial distribution of natural gas-saturated rock / fluid systems including pressure enclosure boundaries; (2) Regional pressure interface or normal and heterogeneous