摘要
徐深气田兴城地区深层火山岩储层岩性复杂多变、储层流体多样、气水关系也较为复杂,在火山岩储层流体性质识别方面存在较大困难。根据天然气对三孔隙度测井曲线的影响,并结合录井、试油等资料,应用岩心刻度测井,提出了三孔隙度组合、交会图和测井新技术判别等3种识别方法,给出了深侧向视电阻率-密度交会图和深侧向视电阻率-录井气测比值交会图及其对气层评价标准;测井新技术使用了密度-核磁共振孔隙度交会法和声波纵-横波速度比较法,用综合手段判断火山岩储层的流体性质。经过20多口探井、评价井的处理解释和应用,较好地解决了火山岩储层气水层识别难题,提高了徐深气田火山岩储层的气层解释符合率。
The lithology of deep volcanic layer reservoir in Xingcheng District, Daqing, is complex, and parameters of rock matrix of it are difficult to be determined, so it is almost impossible to distinguish gas-water formation based merely on fluid type, but synthesized application of multiple logging information could be effective to identify gas reservoir. The gas-bearing identification method described in this paper includes synthetic application of 3-porosity method, cross-plot method, and new logging technologies. The supplements for 3-porosity method are the calibration of responses of 3 kinds of porosity logging with local core data, and the selection of 3 compositive parameters for enlarging characteristics of gas reservoir. The concrete jobs for applying cross-plot methods are plotting cross-plot of deep laterolog resistivity RLLd-density ρ, and cross-plot of RLLd-gas logging ratio, as well as determining corresponding gas-bearing criterions. New logging technologies used now are 2.. the density-NMR porosity cross-plot and the sonic compression-transverse wave velocity comparison. These methods were applied in more than 20 wells, the gas-bearing interpretation accordant rate verified by gas test reaches up to 88%. Field logging cases are shown.
出处
《测井技术》
CAS
CSCD
2006年第6期516-518,531,共4页
Well Logging Technology
关键词
测井解释
火山岩储层
气水层识别
岩性构造气藏
徐深气田
log interpretation
volcanic layer reservoir
gas-water identification
lithologic-structural gas reservoir
Xushen gas field
