RESERVOIR

Question 1

FOR A ROCK TO BECOME A PETROLEUM RESERVOIR, IT NEED ONLY TO BE POROUS- TO BE
ABLE TO “HOLD” PETROLEUM.

Answer 1

THE RESERVOIR

Question 2

“ECONOMICALLY” VIABLE

Answer 2

1. PERMEABLE
2. VOLUME SHOULD BE SUFFICIENT
3. RESERVOIR NOT TOO COMPARTMENTALIZED

Question 3

MEASURE OF POTENTIALLY PRODUCTIVE PART OF A RESERVOIR.
COMMONLY EXPRESSED AS PERCENTAGE OF PRODUCIBLE (NET) RESERVOIR WITHIN THE
OVERALL RESERVOIR PACKAGE.

Answer 3

NET TO GROSS-

Question 4

VOID SPACE IN THE ROCK, MEASURED AS VOLUME PERCENTAGE OR A FRACTION
(AS DECIMAL).

Answer 4

POROSITY-

Question 5

AN INTRINSIC PROPERTY OF A MATERIAL THAT DETERMINES HOW EASILY A
FLUID CAN PASS THROUGH IT.

Answer 5

PERMEABILITY-

Question 6

MOST COMMONLY, RESERVOIRS CONTAIN BOTH OIL AND
WATER . IT IS RARE TO FIND A RESERVOID WITH PURE OIL (OR GAS).

Answer 6

HYDROCARBON SATURATION-

Question 7

INTRINSIC PROPERTIES

Answer 7

1. NET TO GROSS
2. POROSITY
3. PERMEABILITY
4. HYDROCARBON SATURATION

Question 8

RESERVOIR LITHOLOGIES-

Answer 8

1. SANDSTONE DEPOSITIONAL ENVIRONMENT-
2. LIMESTONE AND DOLOMITE-

Question 9

LIMESTONE AND DOLOMITE-

Answer 9

A. SHELFAL/RAMP CARBONATES

B. REEFS
C. DEEP WATER CARBONATES
D. DOLOMITE
E. KARST

Question 10

SANDSTONE DEPOSITIONAL ENVIRONMENT-

Answer 10

A. ALLUVIAL FANS

B. AEOLIAN DUNES
C. LAKES
D. FLUVIAL SYSTEMS
E. DELTAS
F. SHALLOW MARINE SYSTEMS
G. SUBMARINE FANS