松辽盆地北部LX地区中浅层储层有效性评价  

Effective Evaluation of the Middle-shallow Reservoirs of LX Area in the Northern Songliao Basin

作　　者：李振林 孙佳伟 陈彦竹 李宜浓 陈思宇 Li Zhenlin;Sun Jiawei;Chen Yanzhu;Li Yinong;Chen Siyu(Xi'an Shiyou University,Xi'an Shaanxi 710065;CNPC Logging Co.,Ltd.,Xi'an Shaanxi 710077)

机构地区：[1]西安石油大学,陕西西安710065 [2]中国石油集团测井有限公司,陕西西安710077 [3]东北石油大学地球化学专业

出　　处：《中外能源》2018年第11期36-43,共8页Sino-Global Energy

摘　　要：松辽盆地北部LX地区中浅层主要产油层位为白垩系姚家组葡萄花、萨尔图油组。随着储层改造技术的进步,之前确定的储层有效性下限标准已不适用,需要重新开展LX地区储层有效性评价。考虑到储层有效性下限确定方法的适用性,在实验分析数据的基础上,应用储能-产能丢失法、最大孔喉半径法、试油刻度下限法,最终确定了LX地区储层有效性下限:储层孔隙度下限为8.2%,渗透率下限为0.4mD,通过模型反算声波测井曲线下限为70μs/ft,密度测井曲线下限为2.46g/cm^3。针对LX地区储层地质特征,在储层有效性下限确定的基础上,结合实验分析数据和试油数据,建立储层量化分级标准,应用常规孔渗、压汞、核磁共振等数据建立储层分类标准,并建立储层品质评价模型,与测井曲线相结合,通过编程实现不同类别储层的量化分级,为新井解释提供参考依据。将上述储层分类方法应用于松辽盆地北部LX地区的新井解释,取得了理想效果,今后可在该地区的油田勘探开发过程中进行推广。The main pay zones in the middle-shallow reservoirs .of LX area in the northern Songliao Basin are Putaohua and Saertu oil reservoirs in Yaojia Formation of Cretaceous.With the improvement of reservoir reconstruction techniques ,the previous standard for lower limit of reservoir effectiveness is not applicable today.The reservoir effectiveness of LX area should be evaluated again.Based on the experimental data analysis,the lower limit of the reservoir effectiveness in LX area was determined using the method of energy storage-productivity loss ,maximum.pore-throat radius and lower limit of oil test scale as follows.The lower limit of reserlished combined with experimental data and oil test data based on the fixed lower limit of the reservoir effectiveness.The standard for reservoir classification was established by conventional data'of porosity-permeability ,mercury 'injection ,nuclear magnetic resonance and so on,and reservoir quality evaluation model was established.Combined with logging curves,various types of reservoirs may be graded quantitatively through programming,which can provide reference basis for new well interpretation.After the above reservoir classification method was applied to the new well interpretation in LX area of northern Songliao Basin,good results were achieved.It can be popularized during oilfield exploration and development in this area in the future.

关 键 词：储层有效性下限 储能-产能丢失法 最大孔喉半径法 试油刻度下限法 储层品质 分类标准 新井解释 

分 类 号：P618.13[天文地球—矿床学]