摘要
海拉尔地区储层类型多样,储层岩性复杂,主要有砂岩、含凝灰质砂砾岩和变质岩等,而且储层物性变化较大,既存在高束缚水的低电阻率油层,又存在由于储层岩性致密、物性差的较高电阻率的水层,这些由于孔隙结构差异较大引起的储层变化,使常规测井资料难以准确划分储层和储层评价。充分利用核磁测井基本不受岩性影响、可以准确提供储层参数的优势,应用核磁测井处理解释的毛管压力曲线、孔隙度和束缚流体饱和度建立储层分类标准,经试油资料验证符合率达到95%以上,解决了海拉尔地区储层评价难题,弥补了常规测井和岩心毛管压力曲线储层分类的不足,开辟了一种确定储层分类的新途径,对提高海拉尔地区勘探开发效益具有重要意义。
Hailaer area has various types of reservoirs. Reservoir lithology is complicated including sandstone, tuffeous glutenite and metamorphic rock. Reservoir property varies with both low resistivity oil layer with high irreducible water and high resistivity water layer with poor property because of tight rock. Such reservoir variation caused by pore structure difference brings challenge for conventional logging data to accurately classify reservoirs and perform reservoir evaluation. Using NMR logging can accurately provide advantages of reservoir parameters without effect of lithology. Using capillary pressure cure, porosity and irreducible fluid saturation interpreted by NMR to establish reservoir classification standard has coincidence degree more that 95% verified by oil test data. This solves the problem of difficulty in reservoir evaluation, perfect sthe reservoir classification by conventional logging and capillary pressure crave of cores, and provides a new method for reservoir classification for Hailaer area.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2008年第3期136-138,共3页
Petroleum Geology & Oilfield Development in Daqing
关键词
核磁测井
毛管压力曲线
储层分类
标准
NMR logging
capillary pressure curve
reservoir classification
standard
