1. No category

MINISTRY OF SCIENCE AND TECHNOLOGY
DEPARTMENT OF
TECHNICAL AND VOCATIONAL EDUCATION
Sample Questions & Worked Out Examples
For
PE-04026
PRODUCTION OPERATION OF
PROBLEM WELLS
B.Tech(Second Year)
Petroleum Engineering
44
Ministry of Science and Technology
Department of Technical and Vocational Education
Petroleum Engineering
Sample Questions for
PE 04026 PRODUCTOION OPERATIONS OF PROBLEM WELLS
Volume I
Chapter 1 Well Completion Design
1.** Before a well completion design was made, both reservoir and mechanical considerations
must be evaluated. Describe the reservoir considerations.
(10 marks)
2.*
Basically there are two main methods of completing a well, explain completely. (15
marks)
3.** What are the interrelated factors that dictated the selection of the completion interval?
(10 marks)
Chapter 2 Perforating Oil and Gas Wells
4.*
Describe the two types of perforators.
(15 marks)
5.*** Discuss the factors affecting gun perforating results. (20 marks)
Chapter 3 Completion and Workover Fluids
6.** What is a completion or workover fluid? Describe the points that should be considered in
selecting a workover or completion fluid.
(15 marks)
7.*
List down the various workover and completion fluids.
(5 marks)
Chapter 4 Problem Well Analysis
8.** Classify the well problems and completely describe the limited producing rate. (15 marks)
9.*
Describe the following:
(10 marks)
(a) Analysis of problems in rod-pumped wells
(b) Analysis of problems in gas lift wells
10.* Discuss the water problems in oil or gas wells and describe the diagnosis of the problems.
(15 marks)
Chapter 5 Formation Damage
11.* Define "formation damage" and explain the significance of its effect.
(10 marks)
12.** What are the basic causes of formation? Describe them completely.
(15 marks)
13.** Classify the damage mechanisms that result in formation damage and explain briefly.
(10 marks)
14.** Write the short notes on the following damage mechanisms:
(c) Reduced absolute permeability
(d) Reduced relative permeability to oil
(e) Increased viscosity of reservoir fluid
15.** Among the specific well operations describe the damage during
(c) drilling of oil and gas wells
(d) well servicing or workover
(e) well stimulation
(20 marks)
16.** Given the following data, compute the productivity indices and the completion efficiency of
the well.
(10 marks)
Core analysis: Depth, ft
5210-15
5215-5220
5220-25
5225-35
45
Air perm., md 50
0 (shale)
150
100
Fluid properties from PVT analysis: Bo = 1.25, µ = 3.5 cp, Bubble point pressure = 2000 psia
Shut-in reservoir pressure = 3200 psia, Bottom hole producing pressure = 2500 psia
Tank oil producing rate = 100 bbl/day, ln(re/rw)= 7.0
17.** A well is completed on 40-acre spacing. Given that ke = 200 md, rw = 4 in., ra = 1 ft,
ka =10 md, compute the well's PR.
(5 marks)
18.** Given the following data on a newly completed well, compute the completion efficiency E.
Producing rate = 200 bbl/day (tank oil)
pe = 3000 psig
pw = 2800 psig
h = 100 ft
rw = 4 in.
Bo = 1.25
40 acres spacing
kro = 0.25
µo = 4 cp
(10 marks)
k c = 1 darcy
19** Describe the classification of formation damage mechanism
( 10 Marks )
Chapter 6 Surfactants for Well Treatments
20.* Define surfactants and describe the characteristics of surfactants.
(15 marks)
21.*** Describe the use and action of various surfactants.
(10 marks)
Chapter 7 Sand Control
22.** Explain about the sand control mechanisms. (10 marks)
23.*** Describe the design criteria for mechanical sand control.
(15 marks)
24.** Discuss the inside casing gravel pack technique and open hole gravel pack technique.
(15 marks)
25.* Describe the resin consolidation method.
(5 marks)
46
Ministry of Science and Technology
Department of Technical and Vocational Education
Petroleum Engineering
Sample Questions for
PE 04026 PRODUCTOION OPERATIONS OF PROBLEM WELLS
Production Operation of Problem Well II
For
( 25 Sample Questions )
Chapter ( 1 )
1.
2.
3.
4.
5.
Explain the productivity ratio.
Explain the propping of the fracture .
What is the fracture area ?
Write down the short notes on the fracturing fluids .
Explain fracture efficiency.
( 8 marks )
( 8 marks )
( 8 marks )
( 8 marks )
( 8 marks )
Chapter (2 )
1.
2.
3.
4.
5.
6.
Explain Matrix acidizing and fracture acidizing .
Describe acids used in well stimulation .
Explain acid additives.
Describe factors controlling acid reaction rate.
Explain the acidizing techniques for carbonate formations.
Discuss sand stone acidizing .
( 16 marks )
( 16 marks )
( 16 marks )
( 16 marks )
( 16 marks )
( 16 marks )
Chapter (3)
1.
2.
3.
Explain causes of scale deposition.
Describe the prediction and identification of scale .
Explain how to remove scale.
( 16 marks )
( 8 marks )
( 8 marks )
Chapter ( 4 )
1.
2.
3.
4.
Describe types of corrosion .
Explain detection and measurement of corrosion.
Discuss method of cathoic protection .
Describe the selection of coating.
( 16 marks )
( 8 marks )
( 16 marks )
( 16 marks )
47
Chapter (5 )
1.
Explain production rig selection.
( 16 marks )
2.
Discuss the operational efficiency.
( 16 marks )
3.
Explain new conventional workover system.
( 8 marks )
Chapter (6 )
1.
Discuss the reasons for workovers.
( 16 marks )
2.
Explain how to reduce water production in oil and gas wells .
( 8marks )
3.
Exlain how to repair mechanical failure .
( 8 marks )
4.
Explain how to alleviate formation damage .
( 16 marks )
* = Must know, ** = Should know, *** = Could know
Ministry of Science and Technology
Department of Technical and Vocational Education
Petroleum Engineering
PE 04026 PRODUCTOION OPERATIONS OF PROBLEM WELLS
(10) Sample Questoin & Answer
1.
Explain the factors influencing well completion design?
(Page 1)
Solutions
(16 marks)
2.
Discuss the type of perforators.
(Page 10)
Solutions
(16 marks)
3.
Discuss the requirements and selection for completion and workover
fluids.
(16 marks)
(Page 21)
Solutions
4.
Discuss the problem for oil or gas production.
(Page 27 & 28)
Solutions
(16 marks)
5.
What are the basic causes of formation damage.
(Page 35)
Solutions
(16 marks)