PETE 2032 Chapter 4

The ___________________ of components in a hydrocarbon mixture determine the ____________ of its phase diagram.

____________________mixtures are made up of numerous chemical species. Therefore, a __________of phase diagram types is expected.

The behavior of a reservoir fluid during production is governed by the ______________________ and __________________________.

The objective of this module is to define and describe the _______________________.

Mixture 2 contains a large quantity of the light component (90.2% mol). What happens?

• the phase envelope is small

• the critical point is located far down the left side of the envelope and close to the critical point of pure C2

• there is a large area in which retrograde condensation can occur

• the phase envelope is large

• there is a small area in which retrograde condensation can occur

As the heavy component is added (for example, mixtures 3 and 4), what happens?

• the phase envelope increases in size

• covering wider ranges of P and T

• the critical point moves closer to the top of the envelope

• covering narrow ranges of P and T

• the phase envelope decreases in size

Consist in great part of CH4 . The phase diagrams are relatively small with Tc not much higher than that of pure CH4 . The critical point is far down the left slope of the phase envelope.

Contain some CH4 , but also a wide variety of intermediate and large molecules. Phase diagrams are large and cover wide ranges of T. However, in most naturally occurring petroleum, the critical point appears on the left of the phase envelope (unlike mixture 6).

The five types of reservoir fluids were defined because each type requires different approaches by _______________________.

the main factor in many of the decisions regarding the reservoir