Tencom & Frelock Connectors.qxd - Frank's International

FRELOK TM
Designed for Easy Release
CONNECTORS
The FRELOK TM
Connector is far superior to other
connectors because of its unique release
mechanism. It offers technical superiority with its
range of connectors that are equipped with “first
time release.” The FRELOK TM
release mechanism will
save you time when laying down conductors, pulling
follower strings, or disassembling wellhead control
equipment in subsea applications. The FRELOK TM
Connector remains easy to release, whether in open
hole or in drive strings.
Nine (9) release points are used to ensure alignment
of the release bolts on either side of the split in the
lock ring. Anti-rotation pins between the box and pin,
and also the lock ring and pin, prevent relative
movement between the three components.
In general, stab-type pipe connectors are readily
engaged and are as strong or stronger than the pipe
onto which they are welded.
Shown Out of Rotation
for Clarity
PIN
BOX
Lock Ring
Anti-Rotation Pin
Lock Ring
Load Crests
Release Crest
Environmental Seal
PIN
BOX
Mechanical Release Frelok
Copyright 2002 Frank’s Casing Crew & Rental Tools, Inc., Lafayette, LA
Readily Weldable Material
Load Shoulder
Resilient “O” Ring Seal
High Stab Angle (6 )
Guide Profile
Integral Release
Mechanism
Release Screw Stop
Shoulder
Anti-Rotation Pin
Elevator Shoulder
When the ring is compressed, a unique release crest,
located in the center of the lock ring, ensures that the
load bearing shoulders are free from the box
shoulders. The extension of the FRELOK TM
Connector Release Mechanism
release
crest is determined by a comprehensive tolerance
study. This study effectively eliminates the typical
guess work usually associated with lock ring type
connector release procedures.
Case 1
Case 2
FRELOK TM
Crest Height
Release bolt
trapped under pin
groove
Release bolt grips
pin body
Lock ring free
ends can interfere
Release crest
prevents jamming