FISHING TOOLS - National Oilwell Varco
FISHING TOOLS - National Oilwell Varco
FISHING TOOLS - National Oilwell Varco
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Internal Pressure Pipe Cutters<br />
Bowen ® Internal Pressure Pipe Cutters<br />
The NOV Downhole Bowen ® Internal Pressure Pipe Cutter is a simple hydraulic actuated<br />
pipe cutter, consisting of a Body, with multiple Knives and Knife Pins: actuated by a Piston with<br />
a Pressure Relief Valve System consisting of a Flow Bushing, Valve Stem, Flow Bean Retainer,<br />
Valve Stop Spider, Flow Bean, and Set Screws.<br />
Operation<br />
The Cutter is attached to the drill pipe or tubing. The knives are wired to retain them in the<br />
groove and lowered to the desired depth. Rotation is started (usually 30 to 50 rpm). The pump<br />
is turned on, usually to 900 psi. The cutter is held in one position while cutting, and the piston<br />
forces the knives through the pipe. When the knives reach the preset diameter, the piston will<br />
separate from the valve stem and provide more mud flow through the tool, causing a marked<br />
decrease in pump pressure, indicating the knives have severed the pipe.<br />
The pump pressure indication is preset by a simple adjustment, allowing the knives to extend<br />
at exactly the desired diameter.<br />
Send for Bowen ® Technical Manual No. 5680 which includes complete descriptions of construction, operation,<br />
maintenance, and parts listing for Bowen ® Internal Pressure Pipe Cutters.<br />
<strong>FISHING</strong> <strong>TOOLS</strong><br />
O-Ring<br />
Flow Bean<br />
Retainer Ring<br />
Flow Bushing<br />
Knife Pin<br />
Retainer Screw<br />
Bowen ® Internal Pressure Pipe Cutters<br />
Size Pipe to Cut* (inches) 4 1/2 to 6 1/8 4 3/4 to 7 5/8 6 5/8 to 7 5/8 8 5/8 to 11 3/4 9 5/8 to 36 10 3/4 to 36 13 3/8 to 36<br />
O.D. of Cutter (inches) 3 5/8 4 1/4 5 9/16 7 3/8 8 1/4 9 1/2 11 3/4<br />
Size Connection Box Up (inches) 2 3/8 I.F. 2 7/8 I.F. 3 1/2 I.F. * * 9 1/2 *<br />
Size Connection Box Down (inches) 2 3/8 Reg. 2 7/8 Reg. 3 1/2 Reg. * * * *<br />
Complete Assembly 147483 154154 147489 150959 147495 147343 147369<br />
* Blank connection NOTE: Connections to be specified. Knives furnished undressed, unless specified<br />
Optional Accessories<br />
Centralizing Top Sub Sizes Listed Below:<br />
For 5” O.D. 80566 — — — — — —<br />
For 5 1/2” O.D. 80567 — — — — — —<br />
For 7” O.D. — — 80720 — — — —<br />
For 7 5/8” O.D. — 154162 80721 — — — —<br />
Knife Size to Cut Listed Below:<br />
7 5/8” to 9 5/8” O.D. Pipe — — 81896 — — — —<br />
8 5/8” to 9 5/8” O.D. Pipe — — — 151023 — — —<br />
10 3/4” O.D. Pipe — — — — 147021 — —<br />
10 3/4” to 13 3/8” O.D. Pipe — — — 151029 — — —<br />
11 3/4” to 13 3/8” O.D. Pipe — — — — — 147358 —<br />
13 3/8” to 16” O.D. Pipe — — — — 147022 147359 147358<br />
16” to 18 5/8” O.D. Pipe — — — — — — 147359<br />
18” to 20” O.D. Pipe — — — — 147023 147360 —<br />
18 5/8” to 20” O.D. Pipe — — — — — — 147360<br />
24” to 30” O.D. Pipe — — — — 147024 147361 —<br />
26” to 30” O.D. Pipe — — — — — — 147361<br />
30” to 34” O.D. Pipe — — — — 147025 — —<br />
34” to 36” O.D. Pipe — — — — 147026 147362 147362<br />
Top Sub<br />
O-Ring<br />
Retainer Ring<br />
Flow Bean Retainer<br />
Set Screw<br />
Valve Stop Spider<br />
Valve Stem<br />
O-Ring<br />
Piston<br />
Knife Pin<br />
Knife<br />
Body<br />
Internal Pressure Pipe Cutters<br />
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