1. The core data, well logs, well tests, and PVT data for the oil reservoir were provided in the
earlier homeworks. Wells 1, 2, 3, 4, and 10 were produced at a rate of 300 STB/D each for
645 days before they were shut-in for a buildup test. Determine the initial oil-in-place
assuming this is a solution gas drive reservoir and Rp = 528 SCF/STB. You may ignore the rock
and water expansion and the water production.
The following data are available from a saturated oil reservoir without a gas-cap:
The reservoir contains 3 wells. Each well has been produced at a constant rate of 300
STB/D. The reservoir is surrounded by an aquifer with the following properties:
k 50 md
a = 360° (full circle)
Reservoir Area = 500 acres
Determine the Initial Oil-in-Place (N) and the Aquifer Constant (B). You may ignore the
rock and water expansion and the water production.
3. The following information is available from a volumetric wet gas reservoir:
Mid-point Depth= 5025 ft.
Pressure Gradient = 0.5 psi/ft.
Surface Temperature = 50°F
Temperature Gradient =1°F/100 ft.
Separator gas gravity = 0.63
Stock-tank gas gravity = 1.00
Separator gas rate = 4325 MCF/D
Stock-tank gas rate = 650 MCF/D
Stock-tank oil rate = 35 STB/D
Stock-tank Oil gravity = 47° API
A = 1780 acres
h 13 ft.
$ = 8.5%
A. Calculate the initial gas in place
B. Calculate the reservoir pressure after one year assuming constant separator gas rate of
4325 MCF/D.Number range CHAPTER
These solutions may offer step-by-step problem-solving explanations or good writing examples that include modern styles of formatting and construction
of bibliographies out of text citations and references. Students may use these solutions for personal skill-building and practice.
Unethical use is strictly forbidden.