PGE 362 Acid Examples (1) A sample acid test has been performed using 15% HCl and a limestone core. The data is shown below. Please compute the core porosity after acid break through. Math must be shown for full credit. d = 1.27 cm = core diameter L = 7.6

Artificial Lift PGE 379/383 Homework No.1 Due: At lecture time on Thursday, Jan. 31, 2008. Maximum points = 10. Please design a PCP given the following information. (Hint place the design equations in a excel spread sheet so you can change the varia

PGE 362 Production Engineering Hour Exam No. 1
You have 50 minutes to complete this exam. It is closed book and closed notes. You will need your calculator and pen or pencil. Extra paper is available should you need any. There is an equation page at

PGE 362
HWK 6
This is due in lecture on March 29th
Data: Depth = 10,000' Poisson's Ratio =0.25 Young's Modulus = 4,000,000 psi
Overburden grain specific gravity = 2.65 Overburden porosity =0.28
Pore Fluid specific gravity = 1.04
(1) Using the data shown a

PGE 362
HWK 7
This is due in lecture on April 5th.
Data: Depth = 10,000' Poisson's Ratio =0.25 Young's Modulus = 4,000,000 psi
Overburden grain specific gravity = 2.65 Overburden porosity =0.28
Pore Fluid specific gravity = 1.04 Formation thickness = 100'

PGE 362
Homework 10
Due at the start of lecture on April 26th
(1) Please determine the depth to the operating valve and the gas-liquid ratio that is
required for the following well to lift. Please show the pressure traverse graphs, which
should be done in

PGE 362
Homework 11
Due at the start of lecture on May 3rd.
(1) Please make a graph that shows production rate (bbl/day) on the y axis as a function
of pumping speed (spm from 2 to 10) on the x axis for stroke lengths of 86, 100, 120,
144, and 168. Plot o

PGE 362
HWK 9
This is due in lecture on April 19th.
(1) Using the data given, please determine the bottom hole fracture entry pressure during a mini-frac if the
pump rate is 20 bbl/min.
There are 40 perforations open with diameters of 0.25". The perforati

PGE 362
Homework 1 Solution
Due at the start of lecture on Feb 1.
(1) The productivity index of a well is the flow rate per unit pressure drawdown. You
have a choice of drilling a vertical well or a horizontal well in the following
reservoir. The horizont

PGE 362
HWK 2 Solution
This is due in lecture on Feb 8th.
(1) A retrievable tension set packer is to be used in a water injection well. The packer will be set at 3,000'
with tension of 5,000 lbs pulled against the packer to set it. A shear pin is installe

PGE 362
HWK 3 Solution
This is due in lecture on Feb 15th
(1) Please determine the gas inlet pressure required for a pipeline and the strength of pipe required using
the following data. Use the construction code outlined in the text for a line built along

PGE 362
HWK 5 Solution
This is due in lecture on March 1
(1) A new 10,000' deep well with a reservoir pressure of 6,150 psi is to be completed. During completion
operations the well is to be kept "dead", meaning the reservoir is not allowed to flow. The r

PGE 362
HWK 4 Solution
This is due in lecture on Feb 22
(1) For the following well test construct an IPR and three VLP lines on the same graph. For the VLP
graphs use 2 3/8" (1.999" ID), 2 7/8" (2.441" ID), and 3 1/2" (3" ID) tubing. What are the maximum

PGE 362
HWK 6 Solution
This is due in lecture on March 29th
Data: Depth = 10,000' Poisson's Ratio =0.25 Young's Modulus = 4,000,000 psi
Overburden grain specific gravity = 2.65 Overburden porosity =0.28
Pore Fluid specific gravity = 1.04 Biot's constant =

PGE 362
HWK 7 Solution
This is due in lecture on April 5th.
Data: Depth = 10,000' Poisson's Ratio =0.25 Young's Modulus = 4,000,000 psi
Overburden grain specific gravity = 2.65 Overburden porosity =0.28
Pore Fluid specific gravity = 1.04 Formation thickne

PGE 362
HWK 9 Solution
This is due in lecture on April 19th.
(1) Using the data given, please determine the bottom hole fracture entry pressure during a mini-frac if the
pump rate is 20 bbl/min.
There are 40 perforations open with diameters of 0.25". The

PGE 362
HWK 8
This is due in lecture on April 12th.
Data: Depth = 10,000' Poisson's Ratio =0.25 Young's Modulus = 4,000,000 psi
Overburden grain specific gravity = 2.65 Overburden porosity =0.28
Pore Fluid specific gravity = 1.04 Pore Pressure Gradient =

PGE 362
HWK 5
This is due in lecture on March 1
(1) A new 10,000' deep well with a reservoir pressure of 6,150 psi is to be completed. During completion
operations the well is to be kept "dead", meaning the reservoir is not allowed to flow. The reservoir

PGE 362
HWK 3
This is due in lecture on Feb 15th
(1) Please determine the gas inlet pressure required for a pipeline and the strength of pipe required using
the following data. Use the construction code outlined in the text for a line built along a public

INPUT DATA
RESET
Diameter
Total Length
Length Increment
Incline Angle
Roughness
Gas/Liquid Ratio
Water/Oil Ratio
Oil Gravity
Gas Gravity
Water Gravity
Separator Temperature
Separator Pressure
Oil Flowrate
Surface Temperature
Bottom Temperature
Wellhead Pr

INPUT DATA
RESET
Diameter
Total Length
Length Increment
Incline Angle
Roughness
Gas/Liquid Ratio
Water/Oil Ratio
Oil Gravity
Gas Gravity
Water Gravity
Separator Temperature
Separator Pressure
Oil Flowrate
Surface Temperature
Bottom Temperature
Wellhead Pr

Yuxiang Li (yl5565)
PGE 362
HW 4
1. The maximum flow rates from the reservoir through tubing strings are very close,
approximately 500 bbls/day.
2. The maximum flow rate for the 2 3/8 OD tubing is 8500 Mscf/day. The maximum flow
rate for the 2 7/8 OD tubi

Flowing Well Pressure vs. Flow Rate for an Oil Well
8000
7000
Flowing Well Pressure (psi)
6000
5000
Column B
Column C
Column D
Column E
4000
3000
2000
1000
0
0
1000
2000
3000
4000
5000
Flow Rat e (bbl/d)
6000
7000
8000
9000
10000
Flow Rate (bbl/d)
0
5759.

Depth (ft)
10000
C
_v (psi)
P_pore (psi)
P_frac (psi)
u (ft/sec)
c
b
Fluid
Base gel
Base gel + proppant
Base gel + proppant
Base gel + proppant
Base gel + proppant
Base gel flush
E (psi)
0.25
D (in)
4000000
K'
4
n'
0.008
qi (bbl/min)
0.5
Proppant (lbm/ft^

Yuxiang Li (yl5565)
PGE 362
HW 11
The maximum rate that can be lifted if 100 psi is required in the well to feed the pump is 309
bbl/day for stroke length of 144. The smallest pumping unit that can be used to achieve this
rate is 144 stroke length.