油藏物理学油藏物理学 (12).ppt

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1、 New Words reservoir 油油 藏藏sandstone 砂砂 岩岩void space 孔隙空间孔隙空间pore space 孔隙空间孔隙空间sedimentary rock 沉积岩沉积岩 cementation 胶胶 结结compaction 压压实实constitution 结构结构 bulk volume 表观体积表观体积 pore volume 孔隙体积孔隙体积sieve 筛筛 子子granulometric composition 粒度组成粒度组成core sample 岩心样品岩心样品viscosity 粘粘 度度 2.1 Mineral constitution

2、and granulometric composition of sandston rock1.Mineral Constitution of sandston rock sandston rocks are composed of matterials from two different sources:(1)sand grains,(2)cementing agents.(1)sand grains 砂粒砂粒(2)cementing agents 胶结物胶结物sandston rocks砂岩的矿物结构和粒度组成砂岩的矿物结构和粒度组成 The Constitution of Sandst

3、oneSandstone is formed fromgrains that have undergone sedimentation,compactionand cementation.Cementing material poregrainThe Constitution of Sandstonepore space is the spacethat is not filled by cementing material.2.granulometric composition of sandston rock砂岩的粒度组成砂岩的粒度组成1)Definition 定义定义:the perce

4、ntage of grain weight in different size range of the total grain weight of a rock.不同粒径范围颗粒的重量占岩石颗粒总重量的不同粒径范围颗粒的重量占岩石颗粒总重量的百分比。百分比。粒度组成的确定粒度组成的确定 常用的砂岩粒度组成分析方法有：常用的砂岩粒度组成分析方法有：A、sieve analysis method 筛析法筛析法(D0.05mm)B、sedimentation method 沉降法沉降法 (0.0015D0.05mm)2)Measurment of grain size distribution A

5、 A、sieve analysis method(D0.05mm)the testing procedurethe testing procedure:Vibrating sieve,then Vibrating sieve,then weighting the grains on weighting the grains on different sieve.different sieve.hole size is expressed hole size is expressed in mm or hole number in mm or hole number per inch long.

6、per inch long.Vibration machineadvantage：simple，accurate。defect：The method is suitable for grains that The method is suitable for grains that size is larger than 0.05mmsize is larger than 0.05mmB B grain diameterliquid densityviscosityvelocitySedimentation methodgrain density The equation is beased

7、on the balance of forces that grain is beared in liquid.c.thin-section analysis Using microscope to test grain size Solidifying the liquid in pore space3 3）Expreesion of grain size distribution:A A、exprees in tableexprees in table B B、exprees in figureexprees in figure Core numberD(mm)0.42-0.297 0.297-0.210 0.210-0.149 0.149-0.074 0.074-0.05 0.05-0.01 4.5 4.5 分选差分选差5 5）、average grading average grading 平均粒度平均粒度:A A、d d5050 B B、d dmm