疏松砂岩流体因子气层识别方法研究及应用  

Research and Application of Gas Reservoir Identification Method with Fluid Factor in Unconsolidated Sandstone

作　　者：王秀芹[1] 马龙[2] 石强[1] 肖玉峰[1] 及志宇[1] 刘凤新[1] 

机构地区：[1]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [2]中国地质大学,北京100083

出　　处：《内蒙古石油化工》2011年第9期178-180,共3页Inner Mongolia Petrochemical Industry

摘　　要：偶极横波成像测井可以在软地层中提取纵、横波时差,应用纵、横时差及密度测井数据可以计算泊松比和三种流体因子。本文利用DSI测井资料对柴达木盆地三湖地区疏松砂岩储层的流体因子判识气层方法进行研究,建立起该地区气层识别的交会图版及流体因子定性判识气层的标准。应用流体因子判识气层不受地层水矿化度的影响,与电阻率计算的含气饱和度对比分析可以对疑难气层进行有效的评价。通过对三湖地区实际资料的处理,得到的解释结论与试气结果相吻合,说明在三湖地区应用流体因子能够有效地识别气层。Dipole shear sonic imager(DSI) logging can extract the slowness of compressional and shear waves from soft formation,three fluid factors,Poisson ratio,λρ and ρ? could be calculated by using slowness of compressional and shear waves and density logging data.This paper studied the method of unconsolidated sandstones reservoir prediction by fluid factors with DSI logging data in Sanhu area of the Qaidam Basin,and then established the cross-plot templates and obtained the thresholds of fluid factors to distinguish gas reservoir qualitatively.To discriminate gas zone with the fluid factor is little affected by formation water salinity,and contrast with the gas saturation calculated by resistivity could evaluate the complicated gas reservoir effectively.The result of actual data process and interpretation is consistent with the gas testing result,and shows the fluid factor could identify the gas-bearing effectively in Sanhu area.

关 键 词：偶极横波成像测井 纵波时差 横波时差 流体因子 疏松砂岩 

分 类 号：P618.130.8[天文地球—矿床学]