【摘要】 利用高精度三维地震资料对松辽盆地南部长岭断陷火山岩分布及其火山喷发期次进行描述,并落实火山岩顶面构造特征和火山岩气藏圈闭类型;利用元素俘获测井和微电阻率扫描成像测井技术对该火山岩岩性进行标定、识别,并定性、定量评价火山岩储层裂缝发育程度;利用MDT、核磁点测、交叉偶极声波成像等资料对流体性质进行识别,描述了流体分布规律,确定气藏的气水界面;利用核磁、密度测井联合求取有效孔隙度;利用核磁T2谱转换毛管压力求取含气饱和度等,在此基础上计算长岭1号气田火山岩气藏探明储量。更多还原

【Abstract】 High-resolution 3-D seismic data are used to describe the distribution of volcanic rocks and the stages of volcanic eruptions of Changling fault depression in southern Songliao Basin, the structural characteristics of volcanic rocks in the top and the trap types of volcanic gas reservoirs are ascertained. The element capture service (ECS) logging technology and the formation microresistivity image (FMI) imaging technology are used to recognize and calibrate the lithology of volcanic rocks, and the development degree of reservoir cracks is evaluated qualitatively and quantitatively. A lot of data including MDT, NMR (nuclear magnetic resonance) measurement points, cross-dipole acoustic image are used to identify the fluid nature, describe the distribution law of fluids, and determine the gas-water interface of gas reservoirs. Effective porosity is obtained by combining NMR logging with density logging. Gas saturation is got by transforming the capillary pressure using NMR T2 Spectra. The proved reserves of volcanic gas reservoirs in Changling No.1 gas field are calculated based on all the above efforts.更多还原