## Transcribed Text

Introduction to Petroleum Engineering (Production)
Assignment#01 (Well Deliverability)
Total Mark: 100%
Assume that oil is being produced from a well that is deviated 45° from vertical, oil gravity is
(see next page), the internal diameter of tubing is ID=1.5 in. with a relative roughness of 0.008.
It
is a single phase oil reservoir with very low PE Reservoir operates under pseudo steady-state
condition
= (see next page), = 10 md, b = 40jt,p = 4500 psi, u = 5 P,
B = 1 RB/STB, = 0.19, S, = 0.34, r2 = 0.328 ft, s=0, r, = 4000 A L=100009
1- Calculate flow rate from the reservoir to wellbore for different bottomhole pressures
(pvr=0, pz=300psi, 1000 psi, 1800 psi, 3000psi). State all the calculations. (15%)
2- Plot the IPR curve (5%)
3- Develop VIP curve for the wellhead pressure of 20 psi, at least, with five points (q=1
STB/day, three by your choice, and maximum flow rate obtained for State all the
calculations. (15%)
4- What will be the expected production rate and the corresponding Pas, if the wellhead
pressure is 20 psi? (5%)
5- Plot another IPR curve by assuming average reservoir pressure drops from 4500 ps to
3500 and calculate well deliverability for the new condition; use the VLP obtained in
part#3. State all the calculations and describe your findings (15%)
6- Plot different IPR curves by assuming different well skin factors -3 and 25, and calculate
well deliverability for each of them; use the VIP obtained in part#3. State all the
calculations and describe your findings (20%)
p 4500 psi,
7- Plot a new VLP curve and calculate well deliverability, for the base case, (average
reservoir pressure of 4500, and skin factor of zero), if the tube is replaced by a new one
with relative roughness of 0.00005 and diameter of 2 in State all the calculations and
describe your findings (25%)
Set#
Density (lb=/ft²)
Permeability (md)
1
49
80
2
49
85
3
49
90
4
49
95
5
50
80
6
50
85
7
50
90
8
50
95
9
51
80
10
51
85
11
51
90
12
51
95
13
52
80
14
52
85
15
52
90
16
52
95
17
53
80
18
53
85
19
53
90
20
53
95

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