WIRELINE AND PERFORATING SERVICES
Time-Delay Firer
The Time-Delay Firer (TDF) allows under- or overbalanced perforating through the use of a
pressure-actuated firing head with a time-delay fuse. The delay fuse allows 5 to 7 minutes for
adjusting the actuating pressure in the tubing to achieve the desired pressure before firing the guns.
Features and Benefits
The TDF
• Allows independent perforating of selected zones
• Allows maximum use of under- or overbalanced pressure
• Can be run in heavy mud systems
• Can be used with full-opening or non-full-opening tools
• Reduces cost by allowing the running of multiple guns without gun spacers
• Is ideal for production completions, drillstem testing, and dual completions
• Is recommended for running on the top and bottom of gun assemblies
• Allows additional time-delay elements as needed for increasing delay time
Operation
The TDF is run with a predetermined number of shear pins for specific well conditions. The tubing
is pressured to the maximum actuating pressure slowly. The maximum pressure shears the pins in
the shear set and forces the firing piston into the primer. The primer ignites the pyrotechnic delay
fuse. The delay fuse burns for a predetermined time (between 5 and 7 minutes) depending on the
bottomhole temperature, and then detonates the perforating assembly.
Time-Delay Firer
1 7/16 in. (36.51 mm)
8 UN-2B box x 1.315 in.
(33.4 mm) NU-10 Rd pin
2 7/8 in. (73.03 mm) EUE
8 Rd pin x 2 7/8 in.
(73.03 mm) 6P Acme box
1.9 in. (48.26 mm) EUE
10 Rd pin x 2 in. (50.8 mm)
6P Acme box
100014157
100005231
100005230
1.688 in. (42.88 mm)
2.50 in. (63.50 mm)
N/A
3.375 in. (85.73 mm)
Maximum Operating Pressure
17,000 psi (1,170 bars)
24,000 psi (1,655 bars)
13,000 psi (895 bars)
Minimum Operating Pressure
2,200 psi (150 bars)
Flow Area
0.64 in.2 (4.13 cm2)
N/A
425°F (218°C) for 100 hrs
415°F (213°C) for 100 hrs
Assembly Number
Maximum OD
Minimum ID
Temperature Rating
Tensile Strength
56,000 lb (25,400 kg)
Burst Pressure
Collapse Pressure
Overall Length
4,000 psi (275 bars)
160,000 lb (72,500 kg)
N/A
2.25 ft (0.69 m)
220,000 lb (99,700 kg)
30,000 psi (2,070 bars)
20,000 psi (1,380 bars)
1.89 ft (0.58 m)
HAL15382
Thread Size and Type
Time Delay Firer
2.0 ft (0.61 m)
These ratings are guidelines only. For more information, consult your local Halliburton representative.
HALLIBURTON
www.halliburton.com/wireline
H00799 11/07
© 2007 Halliburton
All Rights Reserved
Printed in U.S.A.
Sales of Halliburton products and services will
be in accord solely with the terms and conditions
contained in the contract between Halliburton and
the customer that is applicable to the sale.
HALLIBURTON