MMS Annular Seal Energy Analysis
Pressure Analysis Cement Properties
Ten Str Tens YM AS Slope AS Intercept
Spreadsheet Annotation: Bead 400 60,000 1.46E-07 3.53E-08
1) Change only Bold Red cells Foam 253 32,300 1.08E-07 3.94E-08
2) Spreadsheet estimates field scale cement annular seal failure Latex 539 53,200 6.44E-08 6.28E-08
by comparing calculated energy application and energy resistance Type 1 394 81,600 4.95E-08 7.85E-09
factors with laboratory data.
Formation Properties
Input Data Field Scale Lab Data Tens YM Form Factor
Geometry Data Hard 2,000,000 1.0000
Hole Dia 10.000 3.000 in Intermediate 500,000 0.2500
Pipe OD 8.500 1.063 in Soft 200 0.0001
Pipe ID 7.800 0.450 in
Cemented Interval 1,000 0.333 ft
Lab Data
Cement Data Energy at Failure, in-lbs
Cement Type 1 Hard Int Soft Density Mass Cmt
Formation Hard Bead 162,224 28,628 13,360 12 1.28
Density 15.6 15.6 lb/gal Foam 95,426 54,075 9,543 12 1.28
Tensile Strength 394 394 psi Latex 149,501 17,813 6,362 15.6 1.67
Young's Modulus 81,600 81,600 psi Type 1 222,660 17,813 9,543 15.6 1.67
Anelastic Strain slope 4.95E-08 4.95E-08
Formation Data Lab Data Failure Control Curve
Young's Modulus 2,000,000 2,000,000 psi
Multiplier 8.02E-06
Calculated Data Power 2.1304
Hole Radius 5.000 1.500 in
Pipe OR 4.250 0.531 in E1A calc E1R Fit
Pipe IR 3.900 0.225 in 94 0.13
Pipe Steel CS 8.961 0.728 sq in 141 0.31
Pipe Internal CS Area 47.784 0.159 sq in 184 0.53
Pipe Internal Volume 573,403.491 0.636 cu in 257 1.09
Formation Factor 1.000 1.000 264 1.16
Annular Radius 0.750 0.969 in 264 1.16
Annular CS Area 21.795 6.182 sq in 551 5.55
Annular (Cement) Volume 261,537.59 24.73 cu in 1,041 21.52
Cement Mass 17,662.28 1.67 lbm 1,838 72.18
2,215 107.41
Failure Energy, Lab 222,660 in-lb 3,124 223.55
E1A Lab 275 3,299 250.97
E1R Lab 1,083.29 3500 284.75
4000 378.45
Applied Energy, Field 1.43E+10 in-lb 4500 486.38
E1A Field 452.8 5000 608.78
E1R Field 177.97 5500 745.84
6000 897.73
Pressure Loading Schedule
Pressure Applications Applied Energy
in - lbs
453 178 <-- Fld Data Pt
1,000 - 0.00E+00
2,000 - 0.00E+00
3,000 - 0.00E+00
4,000 - 0.00E+00
5,000 5 1.43E+10
6,000 - 0.00E+00
7,000 - 0.00E+00
8,000 - 0.00E+00
9,000 - 0.00E+00 Cement Type Type 1
10,000 - 0.00E+00 Formation Type Hard
E1R vs E1A
1,000
900
800
700
600
Lab Data
E1R
500
Field Data
400
300
200
100
-
- 1,000 2,000 3,000 4,000 5,000 6,000 7,000
E1A
E1R vs E1A
1,000
900
800
700
600
Lab Data
E1R
500
Field Data
400
300
200
100
-
- 1,000 2,000 3,000 4,000 5,000 6,000 7,000
E1A