GU油田多层砂岩储层岩石物理评价  

Petrophysical evaluation on multi-layer sandstone reservoirs in GU Oilfield

作　　者：杨景强[1] 刘如红[1] 张立秋[1] 彭丹丹[1] 王春阳[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《石油地球物理勘探》2013年第A01期170-174,185,共6页Oil Geophysical Prospecting

摘　　要：以GU工区为例,通过对测井资料质量控制、预处理、数字处理多矿物模型选取、饱和度模型选择应用以及cutoff值的确定等工作,对多层砂岩储层岩石物理的评价进行了论述。结合实际资料应用分析表明,交会图、频率分布图等图形分析技术在数据质量控制、cutoff值确定等方面具有很强的实用性。但由于研究区缺乏密闭取心饱和度资料,文中重点对由电阻率模型计算的含水饱和度和基于J函数获取的原始含水饱和度数据进行比对基础上,按照国际上较通用的厚度划分流程,应用黏土含量、孔隙度、含水饱和度三个参数的cutoff值,成功地对毛砂岩、储层以及净产层三类厚度进行了划分。This paper introduces petrophysical evaluation on multi-layers sandstone reservoirs in GU area by logging data QC and data preprocessing,multimineral model selection,saturation model selection and cutoff determination.Actual data analysis suggests that cross-plots and frequency graphs are very useful in data QC and cutoff determination. Dues to lack of core analyzed saturation data in the work area,in this paper we focus on the comparison between the water saturation calculated by resistivity model and that derived by J-function. Based on the universally-adopted workflow of thickness division,the thicknesses of gross sand, net sand and net pay are reasonably divided using cutoff of clay volume,porosity and water saturation.

关 键 词：岩石物理评价 预处理 含水饱和度 cutoff值确定 

分 类 号：P631[天文地球—地质矿产勘探]