Page 187 - Petroleum and Gas Field Processing

(b) Reduce the emulsified water in the oil
(c) Separate free water (if found) and reduce the emulsified
water

(iii) Conditions leading to stable water–oil emulsions during oil
production are
(a) Heat and energy of agitation
(b) Heat, energy of agitation, and emulsifying agents
(c) Energy of agitation and presence of emulsifying agents

(iv) An emulsion can be broken by applying
(a) Heat and settling time
(b) Heat and chemicals
(c) Pressure and settling time
(d) Chemicals and settling time

(v) Heat consumed to raise a given weight of salt water to a certain
temperature compared to that consumed for the same weight of
crude oil is

(a) Twice as much
(b) One-half as much
(c) The same amount of heat
(vi) Free water found in crude oil is considered more corrosive than
an emulsion because
(a) Emulsions are in direct contact with the steel
(b) Salt water comes is direct contact with the steel
(c) Only oil in emulsion contacts the steel
(vii) Gas separation—when oil is heated—is necessary because
(a) It causes a build-up of pressure in the treater
(b) Separated hot gas can sell for a value higher than oil
(c) It can cause an interference with water settling from emulsion
2. Match the items in column A with the correct statements given in
column B.

Column A Column B
Set #1:
1. Water–oil emulsion a. Less than 1% B.S.&W.
2. To break emulsion b. Water droplets in oil
3. Heating emulsion c. Destroy film surrounding water drops

Copyright 2003 by Marcel Dekker, Inc. All Rights Reserved.