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针对长岭1号气田营城组孔隙型和孔隙—裂缝型火山岩气藏,从火山岩岩性分析入手,通过多种方法在对岩性识别的基础上,综合运用测井、地震和随机建模技术,建立了火山岩岩性分布模型,并进一步建立了物性参数三维地质模型,以精细刻画火山岩储层的储集性和含气性。利用成像测井、常规测井和地震分析方法,对裂缝的分布特征进行了分析,为分析火山岩储层的高渗带奠定了基础。在综合构造、岩性、孔隙性、含气性和裂缝性等多种因素影响的情况下,指出了气藏有利分布区块,为气藏的下一步开发指明了方向。
Aiming at the pore type and pore-fracture volcanic gas reservoirs of Yingcheng Formation in Changling No.1 gas field, starting with the lithology analysis of volcanic rocks, based on the identification of lithology by a variety of methods, comprehensively using well logging, seismic and stochastic modeling Technology, a model of lithology distribution of volcanic rocks has been set up and a three-dimensional geological model of physical parameters has been established to finely characterize the reservoir and gas-bearing properties of volcanic reservoirs. Using imaging logging, conventional logging and seismic analysis methods, the distribution characteristics of fractures are analyzed, which lays the foundation for analyzing the high permeability zone of volcanic reservoirs. Under the influence of many factors, such as comprehensive structure, lithology, porosity, gas-bearing and fracturing, the favorable distribution blocks of gas reservoirs are pointed out, indicating the direction for the next development of gas reservoirs.