关键词: 松辽盆地, 火山岩气藏, 开发方案, 数值模拟

Abstract: The large scale gas reservoirs have been found in deep volcanic formation in the north of Songliao Basin of China. The volcanic gas reservoirs are characterized by various type rock, complex lithologies, sharp lateral variations of lithologies and lithofacies, development of microcrack, poor physical property, serious anisotropy and difficulty of development. The lithology, lithofacies, development degree of fracture, types of storage space, configuration of pore and fracture, and validities of matrix and fracture in deep volcanic formation were evaluated with multidisciplinary methods. The development mode, layer series of development, rational spacing between wells, deploy of well pattern, velocity of gas production, years of stable production and recovery factor were discussed and optimized on the basis of geological study. The reasonable development scheme for volcanic gas reservoir was compiled. The various technologies, including overall planning, implementation in turn, pilot test of infilling well pattern, following-up investigation, and regulation on time, were used in the development of volcanic gas reservoirs. The good results have been achieved.

Key words: Songliao Basin, volcanic gas reservoir, development scheme, numerical simulation