Surface (Ps,Ts) Gas out of Solution Reservoir (P,T)Ĩ Definitions Volume of Oil + Dissolved gas Bo = at Reservoir Pressure & Temp. Fluctuation in crude oil prices is a challenge hindering the growth of the global lubricant viscosity grade improvers market. The estimation of the oil viscosity below the bubble-point pressure is a two-step process. PETE 310 Lecture # 15 Properties of Black Oils Definitions (pages )ģ Properties of Black Oils Needed for Reservoir Engineering Calculations:įormation Volume Factor of oil Bo Total Formation Volume Factor of oil Bt Solution Gas oil Ratio Rs Coefficient of Isothermal Compressibility CoĤ Properties of Black Oils Needed for Reservoir Engineering Calculations:Ĭoefficient of isobaric thermal expansion bo Oil Viscosity mo Interfacial Tensionĥ Learning Goals Understand the behavior of those PVT properties (Bo,Rs,…) vs P and type of fluid (now) Evaluate PVT properties from (later) Field data Laboratory studies CorrelationsĦ Definitions Specific gravity of a liquid API gravityħ Definitions Formation Volume Factor of Oil Gas out of Solution Oils are usually flammable and surface active. The funnel viscosity is measured using the March funnel. It expands to completely fill the vessel in which it is contained. 1 Lecture # 15 Properties of Black Oils Definitions (pages 224-240) An oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is hydrophobic (does not mix with water) & lipophilic (mixes with other oils). A gas can be defined as a homogenous fluid of low density and low viscosity, which has neither independent shape nor volume. Shampoo pours slower out of the bottle because its more viscous than coffee it has a higher viscosity.

Definition of viscosity in oil and gas