Schlum Tbg Punch Summary
1
TUBING PUNCHERS Operational Techniques Use of a positioning device is essential as puncher performance is strongly affected by stand-off. Position the gun as close to a collar as possible to take advantage of additional clearance between strings. Hole size is reduced if less than 1/4 in. clearance exists between the inner and outer strings. Tests have indicated that if these strings are touching no holes will be made. Position the gun in order to avoid shooting through a string collar. Determine the fluid level inside and outside the string to be punched. Using WHE may be necessary due to pressure differential. Selection Chart 1 3/8" HNS PUNCHERS Tubing / Casing wall thickness in. [mm] Average Exit Hole Size in inner pipe in. [mm] Maximum penetration in outer pipe in. [mm] 16DS PUNCHER H448255 Minimum recommended wall Maximum recommended wall 0.19 [4.8] 0.375 [9.5] 0.30 [7.6] 0.23 [5.8] 0.10 [2.5] 0.05 [1.2] 16CL PUNCHER H448254 Minimum recommended wall Maximum recommended wall 0.375 [9.5] 0.50 [12.7] 0.22 [5.5] 0.13 [3.3] 0.10 [2.5] 0.05 [1.2] 1 11/16" HNS PUNCHERS Tubing / Casing wall thickness in. [mm] Average Exit Hole Size in inner pipe in. [mm] Maximum penetration in outer pipe in. [mm] 20ES PUNCHER H429595 Color Code PINK Minimum recommended wall Maximum recommended wall 0.19 [4.8] 0.375 [9.5] 0.32 [8.1] 0.24 [6.1] 0.10 [2.5] 0.05 [1.2] 20DM PUNCHER H429596 Color Code BLACK Minimum recommended wall Maximum recommended wall 0.375 [9.5] 0.50 [12.7] 0.30 [7.6] 0.23 [5.8] 0.10 [2.5] 0.05 [1.2] 20DL PUNCHER H429597 Color Code PURPLE Minimum recommended wall Maximum recommended wall 0.50 [12.7] 0.58 [14.7] 0.25 [6.3] 0.17 [4.3] 0.10 [2.5] 0.05 [1.2] Data applies to Tubing and Casing Grade L-80, 0 to 15,000 psi, 75°F to 500°F in fluid with 0.25" [6.35] clearance between inner and outer pipe. Use standard or high-pressure Domed Scallop guns, with shots through the scallop. Holes through J55 will be approximately 10% larger; through P110 approximately 10% smaller. 1 of 1 2/8/2002 1:29 PM
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Transcript of Schlum Tbg Punch Summary
TUBING PUNCHERS
Operational Techniques
Use of a positioning device is essential as puncher performance is strongly affected by stand-off. Position the gun as close to a collar as possible to take advantage of additional clearance betweenstrings. Hole size is reduced if less than 1/4 in. clearance exists between the inner and outerstrings. Tests have indicated that if these strings are touching no holes will be made. Position the gun in order to avoid shooting through a string collar. Determine the fluid level inside and outside the string to be punched. Using WHE may benecessary due to pressure differential.
Selection Chart
1 3/8" HNS PUNCHERSTubing / Casingwall thickness
in. [mm]
Average Exit HoleSize in inner pipe
in. [mm]
Maximum penetrationin outer pipe
in. [mm]16DS PUNCHER H448255
Minimum recommended wallMaximum recommended wall
0.19 [4.8]0.375 [9.5]
0.30 [7.6]0.23 [5.8]
0.10 [2.5]0.05 [1.2]
16CL PUNCHER H448254Minimum recommended wallMaximum recommended wall
0.375 [9.5]0.50 [12.7]
0.22 [5.5]0.13 [3.3]
0.10 [2.5]0.05 [1.2]
1 11/16" HNS PUNCHERSTubing / Casingwall thickness
in. [mm]
Average Exit HoleSize in inner pipe
in. [mm]
Maximum penetrationin outer pipe
in. [mm]20ES PUNCHER H429595
Color Code PINKMinimum recommended wallMaximum recommended wall
0.19 [4.8]0.375 [9.5]
0.32 [8.1]0.24 [6.1]
0.10 [2.5]0.05 [1.2]
20DM PUNCHER H429596Color Code BLACK
Minimum recommended wallMaximum recommended wall
0.375 [9.5]0.50 [12.7]
0.30 [7.6]0.23 [5.8]
0.10 [2.5]0.05 [1.2]
20DL PUNCHER H429597Color Code PURPLE
Minimum recommended wallMaximum recommended wall
0.50 [12.7]0.58 [14.7]
0.25 [6.3]0.17 [4.3]
0.10 [2.5]0.05 [1.2]
Data applies to Tubing and Casing Grade L-80, 0 to 15,000 psi, 75°F to 500°F in fluid with0.25" [6.35] clearance between inner and outer pipe. Use standard or high-pressure Domed Scallop guns, with shots through the scallop. Holes through J55 will be approximately 10% larger; through P110 approximately 10%smaller.
1 of 1 2/8/2002 1:29 PM
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