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对陕甘宁盆地中部气田奥陶系碳酸盐岩风化壳进行了气藏描述。气藏描述的流程为:以地质为基础、测井为骨架、地震为桥粱、数学地质和计算机为手段对该区下奥陶统马五_1气藏进行了详细的沉积描述、圈闭描述和储层描述;进而得出有关参数及其分布特征,并计算出天然气地质储量;在此基础上,对气藏进行了综合评价。从整体上看,该气田为低孔、低渗、低丰度、深层大气田。
Gas reservoir description of the Ordovician weathering crusts in the central gas field of the Shanxi-Gansu-Ningxia basin was conducted. Gas reservoir description of the process: a geological basis, well logging as a skeleton, the earthquake as a bridge beam, mathematical geology and computer as a means of the Lower Ordovician Ma Wu-1 gas reservoir in this area were described in detail deposition, traps Description and reservoir description; and then derive the relevant parameters and their distribution characteristics, and calculate the natural gas geological reserves; on this basis, a comprehensive assessment of gas reservoirs. As a whole, the gas field is a low porosity, low permeability, low abundance, deep gas field.