赵晓明,罗明高
ZHAO Xiao-ming,LUO Ming-gao(Resource and Environment Institute

• 1:西南石油大学资源与环境学院
• 2:西南石油大学资源与环境学院 四川成都610500
• 3:四川成都610500

摘要(Abstract)：

对于储集层岩石类型不同的油藏,由于其孔隙类型不同,孔隙结构存在较大差异,造成各储集岩具有不同的孔隙度下限。研究发现,利用"J"函数法和分岩性算术平均法计算该类油藏孔隙度下限,均不能准确的反映地下实际情况。而分岩性权重系数法作为一种新方法,它首先针对油藏具有不同储集岩的特点,从孔隙结构研究出发,利用最小流动孔喉半径法,分别求取各储集岩的孔隙度下限;其次充分考虑了各储集岩在实际地层中所占的比例,依据试油结果和岩心描述资料,求取各储集岩的权重系数;最终结合相应各储集岩孔隙度下限值,综合确定油藏孔隙度下限,能较好的反映实际。在准格尔盆地腹部某油藏的实际应用中,效果较好,与采用含油产状法相比较,得到的结果一致,表明这一方法值得进一步推广。
For reservoirs with different rock types,various pore low limitations for various reservoir rocks are caused due to various types and large differences among pore structures.The study indicates that,actual condition isn't corretly reflected by using "J" functional method and seperate lithology CLA to calculate porosity low limitation.However,seperate lithology weight coefficient acts as a new method.It aims at the characteristics of reservoir with various rocks and starts from pore structure and uses minimum flow pore throat radius to respectively obtain porosity low limitation of various reservoir rocks at first.Secondly,consideration of a proportion in actual formation for various reservoir rocks and based on oil test results and core description data,weight coefficient of various reservoir rocks is given.Finally,actual condition is better reflected by combining with porosity cutoff value of various rocks and comprehensively determining reservoir porosity cutoff value.It has been applied into some reservoir in Zhungar Basin and gets good effects.Compared with production method containing oil,the results are same,so this method is worth to be further popularized.

关键词(KeyWords)： 储集层;不同岩性;孔隙度下限;权重系数
reservoir;various lithology;porosity cutoff;weight coefficent

Abstract:

Keywords:

基金项目(Foundation): 西南石油大学研究生院第五批创新基金资助(CXJJ27051);; 四川省重点学科建设项目资助(SZD0414)

作者(Author): 赵晓明,罗明高
ZHAO Xiao-ming,LUO Ming-gao(Resource and Environment Institute

参考文献(References)：

• [1]戚厚发.天然气储层物性下限及深层气勘探问题的探讨[J].天然气工业,1989,9(5):26-30.
• [2]孙国红,吕静,窦凤华.喇萨杏油田萨零组油层有效孔隙度与原始含油饱和度精细解释[J].大庆石油地质与开发,2006,25(4):102-103.
• [3]刘洪涛.葡萄花油田储层参数解释方法研究[J].大庆石油地质与开发,2004,23(1):67-69.
• [4]耿龙祥,曹玉珊.濮城油田砂岩储集层物性下限标准研究[J].石油勘探与开发,1999,26(1):81-83.
• [5]周德志.川东石炭系气藏不同类型岩石孔隙度下限及其对储量的影响[J].钻采工艺,2005,28(4):76-78.
• [6]李传亮.油藏工程原理[M].北京:石油工业出版社,2005.
• [7]裘怿楠,陈子琪.油藏描述[M].北京:石油工业出版社,1996.