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 1.5 fluid saturation 储层流体的饱和度

3 fluid saturation Xuanqi Zhang Petroleum engineering college Xi'an shiyou university

3 fluid saturation Xuanqi Zhang Petroleum engineering college Xi’an shiyou university

油藏物理学一倩层流体的砲和度 outline 1.Put forward problem 2.Fluid saturation 3.Several important saturation initial oil/gas saturation Soi/Sgi ⊙ irreducible water saturation Swi Residual oil/gas saturation Sor/Sg

油藏物理学——储层流体的饱和度 outline 1. Put forward problem 2. Fluid saturation 3. Several important saturation initial oil/gas saturation Soi /Sgi irreducible water saturation Swi Residual oil/gas saturation Sor/ Sgr

4.Research method on saturation

4. Research method on saturation

1.Put forward problem The porosity of a reservoir rock is very important because it is a measure of the ability of that rock to store fluids (oil,gas, and water).Equally important the relative extent to which the pores of the rock are filled with specific fluids.This property is called fluid saturation

The porosity of a reservoir rock is very important because it is a measure of the ability of that rock to store fluids (oil, gas, and water). Equally important the relative extent to which the pores of the rock are filled with specific fluids. This property is called fluid saturation 1. Put forward problem

油藏物理李一倩层流体的砲和度 2.Definition:fluid saturation is expressed as the fraction,or percent,of the total pore volume occupied by the oil,gas,or water. S:= v. V, (i express oil,gas and water) S。+Sw+Sg=1

油藏物理学——储层流体的饱和度 2.Definition：fluid saturation is expressed as the fraction, or percent, of the total pore volume occupied by the oil, gas, or water. （i express oil, gas and water） p i i V V S  So  Sw  Sg  1

Thus,for instance,the oil saturation So is equal to: Vo s。= Vo is Volume of oil in the rock. Vp is total pore volume of the rock. Similar expressions can be written for _gas and water

Thus, for instance, the oil saturation So is equal to: p o o V V S  Vo is Volume of oil in the rock, Vp is total pore volume of the rock. Similar expressions can be written for gas and water

If there are oil,gas and water in pore of reservoir,it is evident that: S。+Se+Sg=1 and V。+Vw+Vg=Vr

If there are oil, gas and water in pore of reservoir, it is evident that: So  Sw  Sg  1 Vo Vw Vg VP and

Calculate saturation 1.The mass of the rock with oil and water is 8.117g,we got water 0.3cm3 by extraction, and dry mass of the rock was 7.220g, rock mass suturated kerosene is 5.756g in the kerosene,and rock mass suturated kerosene is 8.054g in the air.Kerosene's density is 0.8g/cm3.water density is 1g/cm3.find water saturation and oil saturation

Calculate saturation 1.The mass of the rock with oil and water is 8.117g, we got water 0.3cm3 by extraction, and dry mass of the rock was 7.220g， rock mass suturated kerosene is 5.756g in the kerosene, and rock mass suturated kerosene is 8.054g in the air. Kerosene’s density is 0.8g/cm3. water density is 1g/cm3 .find water saturation and oil saturation

Calculate saturation 2.The rock mass with oil and water was 6.554g,we can get water 0.25cm3 by extraction,the dry mass of the rock was 6.037g,the rock porosity was 25%,rock density is 2.65g/cm3,water density is 1g/cm3,oil density is 0.875g/cm3.find oil, gas and water saturation

2. The rock mass with oil and water was 6.554g, we can get water 0.25cm3 by extraction, the dry mass of the rock was 6.037g, the rock porosity was 25%, rock density is 2.65g/cm3 ,water density is 1g/cm3 , oil density is 0.875g/cm3 . find oil, gas and water saturation. Calculate saturation

3.Several important saturation initial oil saturation Soi Initial oil saturation is expressed as the fraction,or percent of the total pore volume occupied by the original oil before development reservoir

3. Several important saturation initial oil saturation Soi Initial oil saturation is expressed as the fraction, or percent of the total pore volume occupied by the original oil before development reservoir