千佛崖组复杂致密砂岩储层参数计算方法研究  

A Method to Calculate Parameters of Complex and Tight Sandstone Reservoirs

作　　者：程丽[1] 冯明刚[1] 王昆[1] 李素兰[1] 

机构地区：[1]中国石化勘探分公司研究院,四川成都610041

出　　处：《天然气技术与经济》2016年第5期10-14,81,共5页Natural Gas Technology and Economy

摘　　要：千佛崖组储层主要发育低孔、低渗致密储层,储层岩石类型及储集空间类型复杂,且储层流体性质多样,导致精确计算储层岩石矿物组分及物性参数面临困难。通过岩心刻度测井资料,针对不同岩性及不同类型储层,形成了基于岩石物理体积模型和多参数数理统计分析为基础的孔隙度计算模型;建立了以岩心孔渗关系为基础的渗透率计算模型;明确了千佛崖组地层岩电参数及地层水参数取值,建立了适合本区千佛崖组的饱和度计算方法。将所建模型计算的储层参数与岩心分析数据进行对比分析表明,测井计算精度较高,能够满足该区储层参数计算的精度要求。There are mainly tight reservoirs with low porosity and permeability developed in Qianfoya Formation. And the type and space of reservoir rock are various and complex. Furthermore,different resistivity appears in well logging because of various reservoir fluids. As a result, it is very difficult to accurately calculate mineral composition of reservoir rock and petrophysical parameters of reservoir. In this study, through core calibration well-logging data, a model to calculate porosity was established at first for different lithology and various types of reservoirs on the basis of rock physics volume model and multiple- parameters mathematical statistical analysis; and then, another model to calculate permeability was developed according to a relationship between porosity and permeability; thirdly, some parameters about formation resistivity or formation water were determined for Qianfoya Formation; at last, a method to calculate saturation suitable for this formation was also set up.These parameters calculated by established models were compared to those obtained from core analysis. Consequently, higher accuracy in well-logging calculation can meet the demand in calculating reservoir parameters.

关 键 词：复杂致密砂岩 储层类型 储层参数计算 千佛崖组 

分 类 号：P618.13[天文地球—矿床学]