JRC DCST - Page 14

Jet Research Center Drill Collar Severing Tool P/N 101293224 Rev. K
Page 14 of 20
Jet Research Center, 8432 South I-35W, Alvarado, Texas, 76009-9775, USA
Telephone 1-817-761-2000; Toll Free 1-800-451-5403; Fax 1-817-783-5812; Website www.jetresearch.com
Tool
OD
Hardware
(Select parts according to pressure requirements)
Pressure
Rating (PSI)
Extension
Mandrel
Firing Head
Assembly
RED Adapter
(Required for RED Top Fire only)
1-3/8”
15,000
100158260
(in kit)
100118430
(order separately)
120042268
(order separately)
20,000
101293225
(order separately)
100118430
(order separately)
120042268
(order separately)
1-3/4”
15,000
100008258
(in kit)
100000434
(order separately)
101293676
(order separately)
20,000
101293227
(order separately)
100000434
(order separately)
101293230
(order separately)
2”
15,000
100008258
(in kit)
100000434
(order separately)
101293676
(order separately)
20,000
101293227
(order separately)
100000434
(order separately)
101293230
(order separately)
2-5/8”
15,000
100008258
(in kit)
100000434
(order separately)
101293676
(order separately)
20,000
101293227
(order separately)
100000434
(order separately)
101293230
(order separately)
2-1/8”
26,000
101539987
(in kit)
100157532
(in kit)
Not Required if using
102273068
Table 3: Electrical hardware components.
5.3 Check o-rings (size 214) on all parts listed, making sure there are no cuts, nicks or
scratches, install and replace as necessary. Lubricate o-rings and male threads only
with a thin coating of clean downhole grease.
5.4 Make up the firing head to the extension mandrels. The extension mandrels are used
to protect the running tools from the detonation shock.
5.5 Make up the firing head and extension mandrels to the running tools, making sure
the firing head or CCL is made up to the electric wireline cable. Check fire and CCL
function. Correct all problems before proceeding and recheck until correct.
5.6 Ensure that cable is in the ‘SAFE’ position. Ensure a stray voltage and current survey
has been performed and grounding lines are attached. Ensure ‘Radio Silence’ is in
place. Clear the assembly and arming area of non-essential personnel.
5.7 Check the firing circuit for the presence of stray voltage with a blasters multimeter in
the volts position, between the lower contact and the body of the extension mandrel;
first in the DC and then in the AC voltage position. Ensure that no voltage is present
between the conductor and ground.