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Master Calculation Sheet

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LINER INPUT

LENGTH
12.0
ID
5.5
EFFICIENCY
95%

SPM

PUMP OUTPUT
BPS
0.0838
GPS
3.520

in.
in.
%

2
4
6
8
10
12
14
16
18
20
22
24
26
28
30

BPM
0.168
0.335
0.503
0.670
0.838
1.006
1.173
1.341
1.508
1.676
1.844
2.011
2.179
2.346
2.514

GPM
7.04
14.08
21.12
28.16
35.20
42.23
49.27
56.31
63.35
70.39
77.43
84.47
91.51
98.55
105.59

SPM
102
104
106
108
110
112
114
116
118
120
122
124
126
128
130

BPM
8.547
8.715
8.883
9.050
9.218
9.385
9.553
9.721
9.888
10.056
10.223
10.391
10.559
10.726
10.894

GPM
358.99
366.03
373.07
380.11
387.15
394.19
401.23
408.27
415.31
422.34
429.38
436.42
443.46
450.50
457.54

32

2.682

112.63

132

11.061

464.58

34
36
38
40
42
44

2.849
3.017
3.184
3.352
3.520
3.687

119.66
126.70
133.74
140.78
147.82
154.86

134
136
138
140
142
144

11.229
11.397
11.564
11.732
11.899
12.067

471.62
478.66
485.70
492.74
499.77
506.81

46

3.855

161.90

146

12.235

513.85

48

4.022

168.94

148

12.402

520.89

50
52
54
56
58
60
62
64
66
68
70
72
74

4.190
4.358
4.525
4.693
4.860
5.028
5.196
5.363
5.531
5.698
5.866
6.033
6.201

175.98
183.02
190.06
197.09
204.13
211.17
218.21
225.25
232.29
239.33
246.37
253.41
260.45

150
152
154
156
158
160
162
164
166
168
170
172
174

12.570
12.737
12.905
13.073
13.240
13.408
13.575
13.743
13.911
14.078
14.246
14.413
14.581

527.93
534.97
542.01
549.05
556.09
563.13
570.17
577.20
584.24
591.28
598.32
605.36
612.40

76

6.369

267.48

176

14.749

619.44

78
80

6.536
6.704

274.52
281.56

178
180

14.916
15.084

626.48
633.52

82
84
86
88
90
92

6.871
7.039
7.207
7.374
7.542
7.709

288.60
295.64
302.68
309.72
316.76
323.80

182
184
186
188
190
192

15.251
15.419
15.587
15.754
15.922
16.089

640.56
647.60
654.63
661.67
668.71
675.75

"Shoe Trac" distance between


guide shoe and FC
(chrom jt + 1 jt casing on the

94

7.877

330.84

194

16.257

682.79

Ashley 2-36 SWD (78.45 ft))

96
98
100

8.045
8.212
8.380

337.88
344.91
351.95

196
198
200

16.425
16.592
16.760

689.83
696.87
703.91

0.625
0.0133

BPM
GPM
SPM
BPS
GPS

barrels per minute


gallons per minute
strokes per minute
barrels per stroke
gallons per stroke

Mud Chemicals
lime raises pH
gel builds volume
caustic raises pH the best
new pac is for lowering water loss
water and cotton seed hulls bring pH back 7
adding water to system raises water loss

TOTAL RPM's
PO, bbl/stk * # strokes, spm * 42 * # rev/gal + rotary rpm
Surface to Bit Strokes
Drill string volume, bbls / PO, bbl/stk
Bottoms Up Strokes
Annular volume, bbls / PO, bbls/stk
Drill Pipe / Drill Collar Calculations
(USE Haliburton Red Book or other source for values)

ID, in2 /1029.4

Capacity, bbl/ft

OD, in - ID, in / 1029.4


Displacement, bbl/ft
Weight, lb/ft
displacement, bbl/ft * 2747 lb/bbl
(Pg. 12 in green CALCS book)
Pressure Gradient psi/ft using ppg
psi/ft
mud weight, ppg * .052
Pressure Gradient psi/ft using lb/ft3
psi/ft

mud weight, lb/ft3 * .006944

psi/ft

mud weight, lb/ft / 144

psi/ft

Pressure Gradient, psi/ft using S.G.


mud weight, SG * .433

HP

MW, ppg

ECD,ppg

Hydrostatic Pressure using ppg and TVD


ppg * .052 * TVD
Convert Pressure into MW using ppg and feet
pressure, psi / .052 / TVD,ft
Equivalent Circulating Density, ECD, ppg
MW in use,ppg
/ .052 / TVD,ft +
annular pressure
loss, psi

Time it takes to Circulate Mud "Bottoms Up"

"Shoe Trac" distance between


guide shoe and FC
(chrom jt + 1 jt casing on the

BU, min

((OD2hole - OD2pipe) / 1029.4) * hole depth / PO / SPM

Disp.

Cement Displacement w/ Fresh Water


(Casing Depth - Shoe Joint) * Capacity of Csg

Ashley 2-36 SWD (78.45 ft))

Calculating # of Stands to Pull Out to Spot Pill on Bottom


Total Stands

(hole size2/1029.4 * inverse * size of pill) /


feet of pipe in stand

Strokes to Displace the Pill (Zero out Totco AFTER pill is pumped)
*PU Kelly to first tool joint in case we need to shut
in the well (BOP)- kelly is squared and BOP wont close

Pump Output bbl,stk


2

PO, bbl/stk

Triplex

.000243 * Liner Dia * stroke length * Efficiency

PO, bbl/stk

Duplex

.000324 * Liner Dia2 * stroke length 2

.000162 * Rod Dia * stroke length * Eff


PO, gpm

Triplex

(3(D2 * .7854) * S) * .00411 * SPM *Eff

PO, bbl/stk

Duplex

.000162 * S*(2(D)2 - d2) * Eff


d=rod dia D= liner dia

Drill Collar Weight, lb/ft


Weight, lb/ft

(OD - ID2) * 2.66

Csg Capacity, bbl

Barrels of Mud Required to Bump Top Plug


(TD - Shoe jt) * Csg Capacity, bbl/ft

Strokes

Number of Strokes Required to Bump Plug


Csg Capacity, bbls / PO, bbl/stk

Cap

Annular Capacity, ft3/ft


D2hole - D2pipe / 183.35

Cap

Casing Capacity ft3/ft


ID2 / 183.35
7'' casing
Calculating Lead Cement (in Sacks)

Use Red Book to obtain constant for bbl/ft for the casing used
Use this number and multiply by the depth of lead cmt, (gives ft3)

Multiply by % excess then Divide by lead cement yield, (gives ft )


gives us (sacks of cement to use)

Calculating Tail Cement (in Sacks)


Follow same process as for Lead cement
Then divide by Tail cement yield, (gives ft3)
gives us (sacks of cement to use)
Calculating Fresh Water Displacement (bbls)
Find the Capacity of the Casing being used
say 7'', 26#, J-55 LTC casing
(~.0383 bbl/ft--Haliburton Red Book)
Multiply this value by the (Total Depth - Shoe Joint Length)
gives is displacement in barrels
Process: Example:
Surface

Intermediate

Production

RPM

Motor RPM Calculation


SPM * RPG * PO * 42

GPM

SPM * PO * 42

GPM

Time Required to Spot a Pill on Bottom


Min

(bbls / PO) / SPM we want to pump


meaning through DP only

PU- entire string weight picked up (includes the resistance of wellbore)


Drill string weight- weight in air
SO- when we come down after PU string weight (less than PU weight)
off bottom weight- same as drill string weight
Drag up- difference in PU and off btm weight

aises pH the best


is for lowering water loss
nd cotton seed hulls bring pH back 7
water to system raises water loss

PO

Strokes
0.0838

bbl/gal
115

DS volume

Rotary

42

0.52

PO
1875

Ann. Vol.

Rev/Gal

OD

Constant

12.25
56.17236072 bbls
OD
ID

9.625

Depth
1029.4

PO
1007

Constant

MW, ppg

Total
22374.70167

0.0838
ID

MW, lb/ft3

Total
0.0838 670.3145671
Total

5.5

1029.4

0.02938605

6.25

1029.4
2747

0.024225277
66.54683554

Constant
11.2

Total
40
250.47208

Total
0.052

0.5824

Constant

Total

110

0.006944

0.76384

110

144

0.763888889

MW, S.G.

Constant
1.2

MW, ppg

Total
0.433

Constant
9.8

PSI

TVD, ft
0.052

Constant
2600

Ann. PSI loss

Total
6800

3465.28

5400

Total
9.259259259

TVD, ft
0.052

Constant
200

0.5196

TVD, ft
0.052

MW, ppg
8600

9.6

Total
10.04722719

ODhole, ft

ODpipe,

Depth, ft

8.75

PO, bbl/stk

4.5

6185

SPM

Total

0.0837

108 0.054704197
37.42925086

Casing Depth
Shoe Joint
Capacity
1007
44.01
0.0773
OD2hole, ft

Constant
8.75

1029.4

Depth

ngth * Efficiency

Pill Size, bbl

13.44522449

Capacity of DP (4.5'')
0.0142

4351

Constant

Inverse

Liner Dia

Total
74.439127

Stk Length

ft in stand

Total

80

93 11.56578451

PO, bbl/stk
0.0837

Total
738.1624851

Efficiency

Rod Length

0.000243

12

95%

0.000324

12

95%

0.00411

12

95%

0.000162

5.5

14

85%

SPM
5

* stroke length * Eff


80
2

a D= liner dia
OD

ID

Constant

6.5
TD, ft

2.25
Shoe jt, ft

6258
Csg Cap, bbls
456
Dia hole

Csg Cap
42.24

0.0383

PO, bbl/stk
0.0837
Dia pipe

Constant

7
ID Csg

2.66

4.5

183.35

Constant
6.276

Odhole,ft

183.35
Odcasing, ft

12.25

Constant
9.625

0.005454

Depth, ft

Excess, %
618

200%

Yield, ft3/ft
2.65

7'' intermediate casing only requires "LEAD" cement + Disp.


Surface requires lead AND tail cement volumes + Disp.
Production requires lead AND tail cement volumes + Disp.
4.5'' P-110 liner only requires "TAIL" cement + Disp.
Odhole,ft

Odcasing, ft
12.25

Constant
9.625

say TD is 1700'
for 12.25'' hole & 9 5/8'' casi

Depth, ft

0.005454

Excess, %
120

Yield, ft3/ft

200%

1.18

36# 9 5/8'' casing

Depth, ft

Shoe jt, ft
1700

Cap., bbl/ft
42.44
0.0773

9 5/8'' surface casing


7'' intermediate casing
TD with 6 1/8'' bit to Granite

cmt goes to surface


cmt goes to Heeber base
left open to the hole/formation/no cmt
3

excess 100% yield ft /ft


200%
2.05
200%
1.34

Surface
1000'

800
0.313178906 bbl/ft
200
0.313178906 bbl/ft
Intermediate
6185 -3665

3665'

excess 35%
135%

8 3/4'' hole & 7'' csg

6185'

2520
Displacement

0.150325875 bbl/ft
Depth, ft

shoe jt
2520

Cap., bbl/ft
43.04
0.0383

7200' TD

SPM

RPG

PO, bbl/stk
Constant
0.52
0.0837
42

114
SPM

PO
115

bbls in pill or
bbls to pump

Constant
0.0837

PO, bbl,stk
117

0.0837

42
Desired SPM
72

1.44

PU
SO
off btm
drag

RPMs

Strokes

Strokes

bbl/ft
bbl/ft
lb/ft

psi/ft

psi/ft
psi/ft

psi/ft

psi

ppg

ppg

84
78
80
4

bbl/ft
min

OR

bbls

stands

Strokes

Total
0.1357398 bbl/stk
0.1348164 bbl/stk
455.534513 gpm
0.1089207 bbl/stk

Total
98.91875 lb/ft
Total
238.063608 bbls
Total
5448.02867 stks
Total
0.15680393 ft3/ft
Total
0.03422962 ft3/ft
Total
146.071369 sks

4042.359 strokes
67.37265 min

without a finite value


for SPM

y TD is 1700'
12.25'' hole & 9 5/8'' casing

Total
63.6974047 sks

200% Excess would mean 2x the


original volume

Total
128.129388 bbls FW

Sacks
244.4323 lead
93.48624 tail

355.1449 lead only

94.86757 bbl FW

Total
208.392912 RPM
Total
404.271 GPM

Total
19.4145759 Min

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