Tough Logging Conditions Systems

1. Tough Logging Conditions Systems

TLC Overview
Equipment Development
SLIM* TLC
Cable Side Entry Subs
Logging While Fishing (LWF)
TLC Operation
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2. Tough Logging Conditions Systems

DWCH-SA
AH-201
TLC - a method of conveyance utilizing the
drillpipe to push logging services through well
bores which are horizontal or otherwise difficult
to log using conventional methods.
DWCH-C
PWCH-AE
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3. Tough Logging Conditions Systems

Female Wet Connect Development
1986 PWCH-AB, Original Design
1988 PWCH-AC, First Improvement, Easier Manufacturing
and Maintenance
1990 PWCH-AD, Second Improvement, Focused on
Reliability
1995 PWCH-AE, Third Improvement, Again Focused on
Reliability (PWCHK-E)
1995 PWCH-SA, First SLIM* Design, Targets the Slim Hole
Market Utilizing PWCH-AE Improvements
1997 PWCH-AE, Fourth Improvement, Utilizing PWCH-SA
FM Contact Assy. (PWCHK-F), Reliability & Cost
Reduction
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4. Tough Logging Conditions Systems

PWCH Operating Specs.
PWCH-AE: 2.125 in. OD, Min. Drillpipe Drift ID 2.4 in.,
350ºF, 20,000 psi, 650 VAC
PWCH-SA: 1.3 in. OD, Adjustable Swab Cup allows a drillpipe
drift ID working range of 1.375 to 4.0 in.,
450ºF, and 20,000 psi 650 VAC
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Vector Product Center
1/23/23
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5.

PWCH-SA Features
Female Contact Assy
Female Contact
PWCH-SA
PWCH-SA Swab Cup
1.3 in. OD allows use in drillpipe with a minimum drift
ID of 1.375 in.
New Female Contact design for increased reliability.
Viton Swab Cup which can be cut to fit drillpipe ID’s as
large as 4.0 in.
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Vector Product Center
1/23/23
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6. Tough Logging Conditions Systems

DWCH Operating Specs.
DWCH-C: Open Hole w/Large Drillpipe, Min.
Hole Size 5 7/8 in., Max. Temp 350ºF.
DWCH-D: Cased Hole w/Drillpipe or Tubing,
Min. Hole Size 4 1/2 in., Max. Temp 350ºF
DWCH-SA: Open Hole or Cased Hole w/Drillpipe or Tubing,
Min. Hole Size 3 7/8 inches, Max.Temp 450ºF.
Mud Circulation Valve for Positive Well Control.
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7.

DWCH-SA Features
Fluid Flow
DWCH-SA
Mud Circulation Valve keeps mud and well fluids
from flowing into the DWCH-SA (and drill pipe) as
the drillpipe is lowered into the well.
Debris are kept out of the DWCH-SA, minimizing
latching problems.
Well Control is enhanced.
Fluid U-Tubing is eliminated.
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8. Standard TLC Minimum Drill Pipe Drift, 2.4 in. Minimum Hole Size, 4.5 in. Maximum Temp., 350ºF Maximum Pressure 20,000 psi.

Std vs SLIM* TLC Operating Specs
DWCH-C
PWCH-AE
DWCH-SA
SLIM* TLC
Minimum Drill Pipe Drift, 1.375 in.
Standard TLC
Minimum Drill Pipe Drift, 2.4 in.
Minimum Hole Size, 3 7/8 in.
Minimum Hole Size, 4.5 in.
Maximum Temp., 400ºF.
Maximum Temp., 350ºF
Maximum Pressure 20,000 psi.
Voltage Rating, 650 VAC.
Drill Pipe is open ended
at the DWCH.
Maximum Pressure 20,000 psi.
Voltage Rating, 650 VAC.
DWCH-SA has a built in mud
circulation piston for increased
well control.
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9. Tough Logging Conditions Systems

SLIM* TLC
Field Test Operating Specs. (1996)
Total Wells Logged 36
Total Runs, 46
Min. Bit Size 3.75 in.
Min. Drill Pipe Drift Dia. 1.375 in.
Max. Mud Wt. 18.0 lb/g
Max. Vis 96
Max. BHT 310ºF
Max. Circulating Rate 280 gpm
Max. Deviation 90º
Max Build Rate 32º/100 ft (Max DLS 40)
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10.

SLIM* Accessories
2 1/2 inch Tool Turner
H352122
Hole Finder Assy.
H547548
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