FISHING TOOLS - National Oilwell Varco
FISHING TOOLS - National Oilwell Varco
FISHING TOOLS - National Oilwell Varco
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22<br />
Fishing Bumper Subs<br />
Bowen ® Fishing Bumper Subs<br />
A fishing string made up properly always includes a dependable Bumper Sub. These Bumper Subs<br />
may also be used as a feed-off tool when using the “predetermined weight” method to cut tubing or<br />
casing. This method is described in Bowen ® Instruction Manual No. 5600.<br />
Construction<br />
The NOV Downhole Bowen ® Fishing Bumper Sub is simple yet rugged. It is composed of only five<br />
primary parts and a double seal assembly. The hexagonshaped mandrel slides in a similar shaped<br />
mandrel body to provide continuous torque capability. The standard 20-inch stroke of these tools<br />
is optimum for most purposes, but longer strokes will be furnished as required, on special order.<br />
Full circulation may be maintained through the bores of the tools at all times. When preferred by the<br />
operator, knockers with Chevron packing can be furnished at extra cost.<br />
Operation<br />
Bowen ® Fishing Bumper Subs are suited for all fishing operations. They will bump down, jar up, or<br />
help disengage a fish after retrieval.<br />
They are easy to operate and maintain, and are available in sizes to match all sizes of fishing strings,<br />
drill pipe, or tubing.<br />
NOTE: Standard stroke for bumper subs is 20 inches. Strokes up to 60 inches furnished. Specifications and prices on request.<br />
RECOMMENDED SPARE PARTS:<br />
(1) 8 Non-Extrusion Rings<br />
(2) 8 Seal Protector Rings<br />
(3) 16 Knocker Seals<br />
(4) 4 Set Screws<br />
Send for Bowen ® Technical Manual No. 4460 which includes complete descriptions of construction, operation, maintenance,<br />
and parts listings for Bowen ® Fishing Bumper Subs.<br />
Bowen ® Fishing Bumper Subs<br />
Connection 1 1/4 1 1/4 2 3/8 2 3/8 2 3/8 2 7/8 2 7/8<br />
Ext. F.L. API Reg. API Reg. API I.F. EUE API Reg. API I.F.<br />
Outside Diameter (inches) 1 13/16 2 1/4 3 5/32 3 3/4 3 3/4 3 3/4 4 1/4<br />
Inside Diameter (inches) 3/8 1/2 1 1 1/2 1 7/8 1 1/4 1 15/16<br />
Stroke (inches) 20 20 20 20 20 20 20<br />
Complete Assembly 20” Stroke*<br />
Part No. 10120 18785 10105 39887 39893 10090 41824<br />
Weight 25 35 80 119 127 110 140<br />
* Standard stroke for bumper subs is 20 inches. Strokes up to 60 inches furnished. Specifications on request.<br />
Optional Extra Accessories<br />
Chevron Packing<br />
Knocker Assembly<br />
— — — — — 30910 59191<br />
Bowen ® Fishing Bumper Subs<br />
Connection 2 7/8 3 1/2 4 1/2 4 1/2 5 1/2 6 5/8 7 5/8<br />
EUE API I.F. API F.H. API I.F. API Reg. API Reg. API Reg.<br />
Outside Diameter (inches) 4 1/2 4 3/4 6 6 1/4 6 3/4 7 3/4 9<br />
Inside Diameter (inches) 2 3/8 2 2 2 1/4 2 3/4 3 1/2 4<br />
Stroke (inches) 20 20 20 20 20 20 20<br />
Complete Assembly 20” Stroke*<br />
Part No. 36794 39905 10135 10257 10690 26595 61596<br />
Weight 152 189 334 370 455 620 850<br />
* Standard stroke for bumper subs is 20 inches. Strokes up to 60 inches furnished. Specifications on request.<br />
Optional Extra Accessories<br />
Chevron Packing<br />
Knocker Assembly<br />
62774 59177 50321 62205 57013 61103 —<br />
Bowen ® Fishing Bumper Sub<br />
Top Sub<br />
Non-Extrusion<br />
Ring<br />
Seal Protector<br />
Ring<br />
Knocker Seal<br />
Knocker<br />
Knocker Set<br />
Screw<br />
Middle Body<br />
Mandrel<br />
Mandrel Body
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