Capabilities Overview

2322
PIPE RECOVERY PERFORATING
Jet Cutters
The jet cutters used by our services experts
incorporate a circumferential jet charge
that severs a broad range of downhole
tubulars—from coiled tubing to casing.
Since the jet charge sometimes leaves a
flare on the severed pipe string, it is often
necessary to smooth the top end of the fish
with a mill.
Applications
The jet cutters provide an ideal solution for
severing coiled tubing, tubing and casing
during salvage operations. They can also
be used for pipe recovery—especially in
heavy mud where chemical cutters are
ineffective.
Features and benefits
The jet cutters used by our services team
have demonstrated proven, reliable cutting
action, and are available in a wide range
of tool sizes. And for special situations, we
can also use special-order cutters.
The jet cuts illustrated in this figure
(from the inside out) are positioned for
presentation only and were made at
different times—using different jet
cutter sizes.
Chemical Cutter
Deployed by our services specialists
for pipe-recovery operations, the
chemical cutter instantly cuts
through tubing or drill pipe—using a
high-velocity oxidizing chemical.
The cut is flare-free and burr-free, with
no distortion on either the ID or OD to
interfere with fishing operations. No part of
the tool is expendable, so there is little or
no debris left in the hole.
These chemical cuts do not require the
pipe to be torqued up—as is the case with a
string-shot back-off. We can also use larger
tools for casing and drill pipe as needed.
Applications
Chemical cutters are used for pipe recovery,
when there is a clear fluid in the wellbore.
Features and benefits
Chemical cutters leave little or no debris
in the hole and no milling is required for
pipe recovery. Pipe torquing for back-off is
not required and this tool can withstand
extreme temperatures and pressures.
1.25-in x 0.125-in coiled tubing @ 18,000 psi
(31.8-mm x 3.18-mm @ 124.1 MPa)
2.00 x 0.156 coiled tubing @ 18,000 psi
(50.8-mm x 4.0-mm @ 124.1 MPa
3.75 x 0.420 22% chrome tubing @ 18,000 psi
(95.2-mm x 10.7-mm @ 124.1 MPa)
5.0-in x 0.460-in 22% chrome tubing @ 22,000 psi
(127-mm x 11.7 mm @151.7 MPa)
Pressure-While-
Perforating Log
(PWP)
This tool combination—including gamma
ray, temperature, pressure, and casing
collar locator—is used by GE’s services
specialists to run above the perforating
guns. The temperature and pressure are
logged while running into the well, prior
to perforating.
The gamma ray tool and casing collar
locator provide accurate depth correlation.
The tool is turned off before perforating—
and immediately after perforating. It is
turned on to log bottom-hole pressure
and temperature versus time.
Applications
The pressure-with-perforating log is used
to measure bottom-hole pressure and
temperature before and after perforating
to evaluate stimulation performance.
It is also used to accurately locate
perforating guns, and to acquire pressure
data for calculating reservoir properties.
Features and benefits
This tool combination runs in conjunction
with perforating tools—and has the
capability to sample pressure and
temperature simultaneously.
Perforating
From the most basic vertical well to the
most complex horizontal multistage
completion, GE’s service specialists ensure
the perforating accuracy and reliability you
need for optimum completion efficiency.
We can deploy a full range of perforating
guns—with shaped charges, shot density
and phasing to match any well-completion
plan. The guns are loaded in our full-
capability facility in Corpus Christi, TX,
employing dedicated explosives experts
to ensure dependable and consistent
quality and are deployed in the well
by some of the most experienced
logging engineers in the field.
Downhole Tension
Device (DHT)
GE Oil & Gas has engineered an exclusive
Downhole Tension Device to monitor
and record actual cablehead tension
during hydraulic fracturing pump-down
operations—to reduce the possibility of
the downhole perforating gun assembly
from being pumped off the wireline cable.
The ability to monitor and record
actual cablehead tension during pump-
down plug and shoot operations
eliminates the possibility of a very
expensive fishing operation due to
lost equipment in the well bore.