Jet Research Center Drill Collar Severing Tool P/N 101293224 Rev. K
Page 16 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
5.18 Measure and record the distance from the center of the DCST assembly to the
measure point of the tool string; typically the CCL. Also record the part numbers and
date codes of the explosive components used in the assembly.
5.19 The DCST assembly is now ready to be run into the pipe. The safety procedures
must be maintained until the assembly has been ran below ground level: typically
200 feet (70 m) below ground on land or 200 feet (70 m) below the seabed offshore.
5.20 After Attempting to make the cut; even if there are good indications that the DCST
functioned; it is still necessary to go back into ‘SAFE’ and ‘Radio Silence’ when
coming out of the hole while still 200 feet (70 m) below ground level on land or 200
feet (70 m) below the seabed offshore. Check that the grounding lines are still in
place and clear the disarming and disassembly area of non-essential personnel. The
safety precautions must remain in force until the explosives responsible person has
seen that the cutter functioned and has confirmed that the cutter is no longer a
potential explosive hazard. If the cutter did not function it must be disassembled and
disarmed before the safety procedures are lifted. The disarming and disassembly
procedure follows.
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General