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塔里木盆地北缘已发现11个大中型气田(藏),均以白垩系为最主要的产层,其它天然气储量占该区探明储量60%以上.其中白垩系巴什基奇克组和巴西盖组为主要产层.对巴什基奇克组和巴西盖组岩石物性资料统计分析并对主要控制因素进行了详细的研究,认为其储层物性主要受控于沉积相、压实作用、胶结作用和溶蚀作用,其中沉积相是最主要的控制因素.根据对该区白垩系岩相古地理的研究和各气田物性统计分析,将该区储层划分为Ⅰ、Ⅱ、Ⅲ 3类,其中Ⅰ类和Ⅱ类储层区是油气田(藏)发育区,也是进一步勘探的首选区域.
Eleven large and mid-sized gas fields (reservoirs) have been discovered in the northern margin of the Tarim Basin, with the Cretaceous as the most important pay zone and other natural gas reserves accounting for more than 60% of the proven reserves in the area, including the Cretaceous Bashijiqike Formation and Brazil Cover group as the main pay zone.Through statistical analysis of petrophysical data of Bashijiqike Formation and Brazil Gaige Formation and the main controlling factors, a detailed study is made of the reservoir properties that are mainly controlled by sedimentary facies, compaction, Cementation and dissolution, and the sedimentary facies is the most important controlling factor.According to the research on the Cretaceous lithofacies palaeogeography in this area and the statistical analysis of physical properties of each gas field, the reservoirs in this area are divided into three types Ⅰ, Ⅱ and Ⅲ, The type I and type II reservoirs are the development areas of oil and gas fields (reservoirs) and the preferred area for further exploration.