Drilling and Completion Engineering IIAn exploration well is to be drilled to a total depth of 19000 ft, relevant data are asfollows:Safety factors for collapse and burst are 0.9 and 1.05 respectively.Design suitable casing strings for the given hole sizes, taking into consideration theavailable casing grades and the maximum expected pressures.The answer by hand written in a clear way Available Casing GradesSize (in)GradeID (in)Weight (lb/ft)Coupling Type20K5519.12494BTCK5519106.5LTCK5518.73133LTCK5515.0184BTC16N 8014.86895BTCN800.57597BTC13 3/8K5512.61554.5STCK5512.41568BTCL8012.34772BTC95/8K558.92136BTCL808.68147BTCC958.53553.5BTC7K556.2762626BTCL806.18429C956.1842922BTCBTC Drilling program:0 - 350 ftt26-in. hole350 - 5,000 ft->20-in. hole5,00011,100 ft->11,10014,000 ft17.5-in.hole12.5-in. hole14,00019,000 ft ->8.5-in. holeCasing program0 - 350 ft->20-in.conductor pipe0 – 5,000 ft->16-in.surface casing0 - 11,100 ft-13.375-in.intermediate casing11,100 – 14,000 ft9.625-in.liner0 - 19,000 ft→7-in.production casingFormation fluid gradient0 - 350 ft0.465 psi/ft350 - 5,000 ft→0.465 psi/ft5,00011,100 ft0.597 psi/ft11,100 – 14,000 ft→0.849 psi/ft14,000 – 19,000 ft ->0.906 psi/ft0 - 350 ftMud program9.5ppg (70.7 lb/ft³)0 - 5,000 ft9.5Ppg (70.7 lb/ft³)0 - 11,100 ft0 - 14,000 ft->12.0 ppg (89.8 lb/ft³)->16.80 - 19,000 ft->17.9Ppg (125.7 lb/ft³)Ppg (133.9 lb/ft³)

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Answered: Drilling and Completion Engineering II…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Drilling and Completion Engineering II An exploration well is to be drilled to a total depth of 19000 ft, relevant data are as follows: Safety factors for collapse and burst are 0.9 and 1.05 respectively. Design suitable casing strings for the given hole sizes, taking into consideration the available casing grades and the maximum expected pressures. The answer by hand written in a clear way

Available Casing Grades
Size (in)
Grade
ID (in)
Weight (lb/ft)
Coupling Type
20
K55
19.124
94
BTC
K55
19
106.5
LTC
K55
18.73
133
LTC
K55
15.01
84
BTC
16
N 80
14.868
95
BTC
N80
0.575
97
BTC
13 3/8
K55
12.615
54.5
STC
K55
12.415
68
BTC
L80
12.347
72
BTC
95/8
K55
8.921
36
BTC
L80
8.681
47
BTC
C95
8.535
53.5
BTC
7
K55
6.276
26
26
BTC
L80
6.184
29
C95
6.184
29
22
BTC
BTC

Drilling program:
0 - 350 ft
t
26-in. hole
350 - 5,000 ft
->
20-in. hole
5,000
11,100 ft
->
11,100
14,000 ft
17.5-in.hole
12.5-in. hole
14,000
19,000 ft ->
8.5-in. hole
Casing program
0 - 350 ft
->
20-in.
conductor pipe
0 – 5,000 ft
->
16-in.
surface casing
0 - 11,100 ft
-
13.375-in.
intermediate casing
11,100 – 14,000 ft
9.625-in.
liner
0 - 19,000 ft
→
7-in.
production casing
Formation fluid gradient
0 - 350 ft
0.465 psi/ft
350 - 5,000 ft
→
0.465 psi/ft
5,000
11,100 ft
0.597 psi/ft
11,100 – 14,000 ft
→
0.849 psi/ft
14,000 – 19,000 ft ->
0.906 psi/ft
0 - 350 ft
Mud program
9.5
ppg (70.7 lb/ft³)
0 - 5,000 ft
9.5
Ppg (70.7 lb/ft³)
0 - 11,100 ft
0 - 14,000 ft
->
12.0 ppg (89.8 lb/ft³)
->
16.8
0 - 19,000 ft
->
17.9
Ppg (125.7 lb/ft³)
Ppg (133.9 lb/ft³)

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