reservoir engg 4 min read
NATURAL WATER DRIVE
Natural water drive, as distinct from water injection, has already been qualitatively described, in Chapter 1, sec. 7, in connection…
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GASCAP DRIVE
A typical gascap drive reservoir is shown in fig. 3.6. Under initial conditions the oil at the gas oil contact…
reservoir engg 2 min read
THE MATERIAL BALANCE EXPRESSED AS A LINEAR EQUATION
Since the advent of sophisticated numerical reservoir simulation techniques, the Schilthuis material balance equation has been regarded by many engineers…
reservoir engg 2 min read
GENERAL FORM OF THE MATERIAL BALANCE EQUATION FOR A HYDROCARBON RESERVOIR
The general form of the material balance equation was first presented by Schilthuis1 in 1941. The equation is derived as…
reservoir engg 3 min read
DETERMINATION OF THE BASIC PVT PARAMETERS IN THE LABORATORY
These additional measurements will be briefly discussed in section 2.6. For the moment, the essential experiments required to determine the…
reservoir engg 3 min read
COLLECTION OF FLUID SAMPLES
Samples of the reservoir fluid are usually collected at an early stage in the reservoir’s producing life and dispatched to…
reservoir engg 2 min read
DEFINITION OF THE BASIC PVT PARAMETERS
The Pressure−Volume−Temperature relation for a real gas can be uniquely defined by the simple equation of state in which the…
reservoir engg 5 min read
HYDROCARBON PHASE BEHAVIOUR
This subject has been covered extensively in specialist books8,13,18 and is described here in a somewhat perfunctory manner simply to…
reservoir engg 3 min read
GAS MATERIAL BALANCE: RECOVERY FACTOR
The material balance equation, for any hydrocarbon system, is simply a volume balance which equates the total production to the…
reservoir engg 1 min read
APPLICATION OF THE REAL GAS EQUATION OF STATE
The determination of the Z−factor as a function of pressure and temperature facilitates the use of the simple equation to…
reservoir engg 2 min read
The Z-factor correlation of Standing and Katz
This correlation requires a knowledge of the composition of the gas or, at least, the gas gravity. Naturally occurring hydrocarbons…
reservoir engg 3 min read
VOLUMETRIC GAS RESERVOIR ENGINEERING
Volumetric gas reservoir engineering is introduced at this early stage in the book because of the relative simplicity of the…