AD-1,Drill Depth Capacity Estimation
Maximum Allowable pull, lbs
300,000
Maximum set back,lbs
225,000
Drill pipe Size
4-1/2''
3-1/2''
5''
4''HT
Weight
16.6
15.5
19.5
14.0
13.3
Grade
S135
Tensile (new)
595,000
581,000
712,070
513,650
488,800
Torsion (new)
55,350
37,890
73,970
41,840
33,300
Connection
4-1/2'' XH(NC46)
3-1/2''IF(NC38)
4-1/2''IF
XTM39
XT38
Make up Torque (premium)
16,500
5,300
24,700
18,900
15,200
Tensile
TBA
667,800
Maximum safe pull (50 Tensile)
297,500
290,500
356,035
156,825
244,400
Maximum safe torque (80% make up torque)
13,200
4,240
19,760
15,120
12,160
Block Weight, lbs
25,000
Max alloweable pull less block, lbs
275,000
Pick up weight off bottom (80% max pull),lbs
220,000
String weight off bottom (80% of pick up weight),lbs
176,000
Buoyancies weight (9.0ppg, MW,BF=0.86)
204,651
Max well depth,ft
12,328
13,203
10,495
14,618
15,387
Max well depth,m
3,758
4,024
3,199
4,455
4,690
Maximum length for set backk,ft
13,554
14,516
11,538
16,071
16,917
Max Derrick Tacking Board,ft
8,900
12,000
<8900
<12,000
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