Chapter1 Physics property of reservoir rock Zhang xuanqi Petroleum engineering college Xi 'an shiyou university
Chapter1 Physics property of reservoir rock Zhang xuanqi Petroleum engineering college Xi ‘an shiyou university
petrophysics Chapter 1 Physics property of reservoir rock The focus of this chapter porosity permeability saturation Sand particle size/grain size,size distribution specific surface Sensitivity
The focus of this chapter ： porosity permeability saturation Chapter 1 Physics property of reservoir rock Sand particle size/grain size, size distribution specific surface Sensitivity petrophysics
油藏物理李一岩石粒度组成与比面 1.1 Sand particle size and size distribution sedimentary rocks is composed of all kinds of particle size of sandstone.So particle size,shape,arrangement,cement quantity,property will affect reservoir properties
1.1 Sand particle size and size distribution sedimentary rocks is composed of all kinds of particle size of sandstone. So particle size, shape, arrangement, cement quantity, property will affect reservoir properties. 油藏物理学——岩石粒度组成与比面
油藏物理学一老石粒度组成与比面 1.Definition size distribution----The size distribution may be represented as the cumulative curve of grains that are retained on a given sieve size“percent larger,”or the grains that pass through a given sieve,"percent finer
size distribution ---- The size distribution may be represented as the cumulative curve of grains that are retained on a given sieve size “percent larger,” or the grains that pass through a given sieve, “percent finer.” １． Definition ： 油藏物理学——岩石粒度组成与比面
油藏物理学一岩石粒度组成与比面 2.Measurement method 1)sieve analysis: In general,the procedure is to carefully crush the rock with an impact crusher (not a grinder) to obtain individual grains.A set of sieve trays is assembled with the finest screens at the bottom,and sieve size is from large to small
２．Measurement method 1）sieve analysis： 油藏物理学——岩石粒度组成与比面 In general, the procedure is to carefully crush the rock with an impact crusher (not a grinder) to obtain individual grains. A set of sieve trays is assembled with the finest screens at the bottom, and sieve size is from large to small
EQUIPMEN
EQUIPMEN
袖藏物理学一老石粒度组成与比面 Experimental data of sieve analysis >d1 G da-dz di,grain size, d2-d3 Gi,cumulative mass percent ∠dn G=ΣG G
Experimental data of sieve analysis 油藏物理学——岩石粒度组成与比面 ＞d1 G1 d1~d2 G2 d2~d3 G3 ＜dn Gn di, grain size, Gi, cumulative mass percent G=∑Gi
油藏物理学一岩石粒度组成与比面 average grain size: how to got it? d,:average grain diameter d,d; respectively sieve hole diameter in two adjacent layer
) 1 1 ( 2 1 1 ' '' i di di d how to got it? respectively sieve hole diameter in two adjacent layer. ：average grain diameter i d ' i d '' di 油藏物理学——岩石粒度组成与比面 average grain size：
庙藏物理学一岩石粒度组成与比面 2 settling method(53~74um) A.principle: based on Stokes equation: -gd(B.D 18vP1
based on Stokes equation： （ 1） 18 2 l g d s V A．principle： 油藏物理学——岩石粒度组成与比面 ２）settling method(53~74μm）----
g:Acceleration of gravity cm/s2 d:grain size,cm; v:Kinematic viscosity cm2/s; Ps:Particle density g/cm3; P:Liquid density g/cm3; V:Particle velocity cm/s
g : Acceleration of gravity cm/s2 ； d：grain size, cm； ν： Kinematic viscosity cm2 /s； ρs： Particle density g/cm3； ρl： Liquid density g/cm3； V： Particle velocity cm/s