What do you mean by phase diagram?
A phase diagram is a graphical representation showing different phases of a substance or a mixture of substances that coexist in a thermodynamic equilibrium and undergo phase changes at different operating conditions such as temperature, pressure or volume.
What is phase diagram in oil and gas?
A phase is the portion of a system that is homogeneous, is bounded by a surface, and is physically seperable from other phases. Equilibrium phase diagrams offer convenient representations of the ranges of temperature, pressure, and composition within which various combinations of phases coexist.
What is meant by phase and phase diagram?
Phase diagram is a graphical representation of the physical states of a substance under different conditions of temperature and pressure. As we cross the lines or curves on the phase diagram, a phase change occurs. In addition, two states of the substance coexist in equilibrium on the lines or curves.
How many types of phases are there?
The three fundamental phases of matter are solid, liquid, and gas (vapour), but others are considered to exist, including crystalline, colloid, glassy, amorphous, and plasma phases. When a phase in one form is altered to another form, a phase change is said to have occurred.
What is saturated reservoir?
Saturated oil reservoir: When the initial reservoir pressure is equal to the bubble point pressure of the reservoir fluid, as shown in Fig. Gas-cap reservoir: When two phases (gas and oil) initially exit in equilibrium in a reservoir; the reservoir is defined as a gas-cap reservoir.
What is critical point in phase diagram?
critical point, in physics, the set of conditions under which a liquid and its vapour become identical (see phase diagram). For each substance, the conditions defining the critical point are the critical temperature, the critical pressure, and the critical density.
What is meant by phase rule?
phase rule, law relating variables of a system in thermodynamic equilibrium, deduced by the American physicist J. The phase rule states that F = C − P + 2. Thus, for a one-component system with one phase, the number of degrees of freedom is two, and any temperature and pressure, within limits, can be attained.