西安石油大学：《油藏物理（油层物理学）Petro-physics》精品课程教学资源（英文课件）Physics property of reservoir rock 1.2 specific surface 岩石粒度组成与比面

1.2 specific surface Definition:specific surface means the total pores surface area of unit volume of rock. S (cm2 /cm3)

1.2 specific surface Definition: specific surface means the total pores surface area of unit volume of rock. V A S  ( / ) 2 3 cm cm

油藏物理学一一岩石粒度组成与比面 the particle size,cement content,the arrangement of particles and particle shape effect on specific surface. exp:if rock of 1 m3 is composed of sand of 1mm,the surface area is 24×104m2/m

the particle size, cement content, the arrangement of particles and particle shape effect on specific surface. exp: if rock of 1 m3 is composed of sand of 1mm，the surface area is 4 2 3 2410 m / m 油藏物理学——岩石粒度组成与比面

油藏物理学一一岩石粒度组成与比面 classification on specific surface A s is based on bulk volume S= Sp is based on Pore volume Sp- A p A SS is based on sand grain volume.Ss= s

油藏物理学——岩石粒度组成与比面 classification on specific surface : S is based on bulk volume V A S  P P V A S  S S V A S  SP is based on Pore volume SS is based on sand grain volume

油藏物理学一一岩石粒度组成与比面 relationship 1 1 Ss Sp S Induct porosity: S=Sp=(1-0)Ss

油藏物理学——岩石粒度组成与比面 relationship : S SS SP 1 1 1   P S S    S  (1)S Induct porosity:

油藏物理学一一岩石粒度组成与比面 2.Measurement of specific surface (1)directness: Kozeny-Carman equation: A·H S,=14a-V21 Ss:based on sand grain volume

2．Measurement of specific surface （1）directness： Kozeny-Carman equation： SS：based on sand grain volume Q L A H Ss          2 3 (1 ) 14 油藏物理学——岩石粒度组成与比面