石油地质与工程2025，Vol.39Issue(6)：12-17,24,7.DOI:10.26976/j.cnki.sydz.202506003
鄂尔多斯盆地西缘宁庆区块盒8段致密气藏储层参数评价
Reservoir parameter evaluation of tight gas reservoirs in He 8 member,Ningqing Block,western margin of Ordos Basin
刘昱柏 1陈建军 2赵乐义 2曾利刚 2胡小勇 2雷琳琳1
作者信息
- 1. 中国石油集团测井有限公司地质研究院,陕西 西安 710021
- 2. 中国石油玉门油田分公司,甘肃 酒泉 735019
- 折叠
摘要
Abstract
The effective identification of tight sandstone gas reservoir in the Ordos Basin is a core challenge in exploration and development.Based on petrophysical experiment data,combined with logging,gas tes-ting and production test data,the evaluation criteria for effective reservoir parameters of the He 8 member in the study area are established,and the lower limits of physical properties,gas-bearing properties and log-ging parameters are defined.The lithology of the He 8 member reservoirs is primarily quartz sandstone and lithic quartz sandstone;both primary and secondary pores are developed within the reservoirs,with pore structures dominated by Types Ⅱ and Ⅲ pores,the average porosity of the reservoir is 8.0％,and the per-meability is 0.606×10-3 μm2.Based on empirical statistical methods,the lower limits for reservoir physical properties are determined to be a permeability of 0.100×10-3 μm2 and a porosity of 5.0％.According to well logging data and gas testing and production data,the lower limits for well logging parameters are deter-mined to be interval transit time of 210 μs/m,a deep lateral resistivity of 40 Ω·m,a density limit of 2.6 g/cm3,a natural gamma of 60 API,and compensated neutron of 13％,and the gas saturation lower limit is defined as 45％.关键词
鄂尔多斯盆地/盒8段/致密气藏/有效储层/储层参数下限Key words
Ordos Basin/He 8 member/tight gas reservoir/effective reservoir/lower limit of reservoir pa-rameters分类
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刘昱柏,陈建军,赵乐义,曾利刚,胡小勇,雷琳琳..鄂尔多斯盆地西缘宁庆区块盒8段致密气藏储层参数评价[J].石油地质与工程,2025,39(6):12-17,24,7.
