基于瞬时进汞饱和度的毛细管压力曲线储层评价方法  

A new method to evaluate reservoir with capillary pressure curve by means of instantaneous mercury injection saturation

作　　者：王剑峰[1] 毕研斌[2] 李景发 姜艳春[4] 

机构地区：[1]大庆油田技术培训中心,黑龙江大庆163255 [2]中国石化石油勘探开发研究院,北京100083 [3]大庆职业学院,黑龙江大庆163255 [4]大庆油田有限责任公司第一采油厂,黑龙江大庆163001

出　　处：《大庆石油学院学报》2010年第3期54-59,共6页Journal of Daqing Petroleum Institute

基　　金：国家"973"重点基础研究发展规划项目(2005CB422107)

摘　　要：在分析川东北碳酸盐岩储层评价标准的基础上,将孔隙度和最大汞饱和度相结合,进行试验样品储层分类.提出利用拟合二次曲线求取瞬时进汞饱和度的新方法.结果表明:不同类型储层表现出各自不同的瞬时进汞饱和度曲线特征;孔隙型储层的瞬时进汞饱和度曲线表现为不同形态的"上凸"特征,存在进汞缓滞段;裂缝型储层瞬时进汞饱和度曲线近似线形,不存在注汞缓滞段;利用瞬时进汞饱和度曲线进行储层评价,是对毛细管压力曲线评价储层的有效补充,具有实际应用价值.On the basis of analyzing primary evaluating criterion for Carbonate Reservoir in Chuandongbei Area,tested samples are classified by combining porosity and maximum mercury injection saturation.A new method is brought forward to evaluate reservoir with instantaneous mercury injection saturation by means of fitting the parabola.It is revealed that various type of reservoirs have different instantaneous mercury injection saturation character individually.Instantaneous mercury injection saturation curve of porous type reservoir is characterized by deflexed shape in left end of the curve,and provided with mercury injection put-off section,while that of fractural type reservoir is characterized by approximately line-type without mercury injection put-off section.Compared with original capillary pressure curve,instantaneous mercury injection saturation curve is an effective supplementary to evaluate reservoir,therefore promises some value in practical application.

关 键 词：毛细管压力曲线 储层孔隙结构 最大汞饱和度 瞬时进汞饱和度 储层评价 

分 类 号：TE122.4[石油与天然气工程—油气勘探]