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| MULTI STAGE SETTING TOOLS |
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Owen multi stage wireline pressure setting tools differ from single stage compact
tools in that an extra top piston and companion cylinder are added to the tool which
then doubles the pulling strength ability of the tool. In addition, the tool has
a longer stroke length. The multi stage tool is used primarily to set Magna Range
Bridge plugs which require extra stroke length. Another use of the tool is to set
Owen Casing / Tubing Patches which require the extra pulling strength provided by
the tool. Like the compact setting tools, the burning of the power charge produces
high pressure gas that elongates the tool, providing the necessary stroke to set
the bridge plugs and casing patches. |
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The tools feature pressure balanced top and bottom pistons and eliminate presetting
of the mentioned products caused by high hydrostatic pressure. |
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An electrically actuated high temperature rated ignitor located at the upper end
of the tool is ignited and produces a flash flame which, in turn, ignites the power
charge that is located directly below the ignitor. The power charge, which is constructed
of carefully controlled combustible elements, begins a slow burn of approximately
30 seconds. The resultant gas derived from the burning charge gradually builds up
to high pressure and causes the tool to stroke. |
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The pressurized gas migrates down the center of both top pistons of the tool and
out into an annular cavity formed between the top pistons and tandem subs. The pressure
acting on these areas drives the outside of the tool (consisting of top and bottom
cylinders) downward while the top and bottom pistons remain stationary. This motion
anchors the bridge plug to the casing then pulls the release stud of the plug in
half, freeing the setting tool for retrieval from the well. |
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| An oil damper system is built into the tool to control the speed at which the tool
strokes. As the tool elongates this oil is forced through an annular orifice and
out of the tool at a controlled rate which prevents the tool from stroking too fast
and damaging the tool once the release stud pulls apart. |
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| Note: IT IS MANDATORY THAT THE TOOL BE FILLED TO CAPACITY WITH OIL AFTER EACH
USE OR DAMAGE TO THE TOOL WILL RESULT. Excess oil will be purged out
automatically during assembly. Likewise, oil expansion caused by high temperature
during running will be purged in the same manner. |
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| REFERENCES |
| Baker to Owen Setting Adapters Baker #10 SET-5307-042 and SET-5303-076 #20 Setting Tools to Owen 3.5" Setting Adapters |
Owen to Baker Setting Adapter Kit Owen 3.5" Setting Tool to Baker #10 SET-5303-117
and
SET-5303-120 #20 Setting Adapters |
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| SETTING TOOL FIRING HEAD ADAPTERS |
AES-AS80005 1.5" O.D. HIGH PRESSURE FIRING ADAPTER BOX UP WITH 1.187"-12 UN THREAD
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| AES-AS90028 3.25 O.D. QUICK CHANGE FOR PIN UP WITH 1.625"-6 ACME THREAD |
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