FISHING TOOLS - National Oilwell Varco

Full-Circle Releasing Spears
Bowen ® Full-Circle Releasing Spears
NOV Downhole Bowen ® Full-Circle Releasing Spears offer many
outstanding advantages for all fishing jobs where it is necessary to
engage a fish internally. Secure engagement is assured by the Full
Circle Slips. Positive Release is assured by the primary release
mechanism, backed by the left-handed wickers on the Slips which
allow the tool to be unscrewed from the fish using right-hand
rotation.
These tools are versatile, a size being available for each tubing, drill
pipe and casing size. The full complement of accessories available
include Mill Type, Sub Type and Sidehill Type Nuts, Extensions,
Safety Ring Pack-offs, and Skirts and Guides. Generous bores
are provided through the tools to assure ample fluid flow to help
remove cuttings and furnish lifting force to the fish.
RECOMMENDED SPARE PARTS:
(1) 2 Sets of Slips for each size to be caught
(2) 1 Unitizer and 2 Friction Retainers (or 2 Friction
Block Assemblies)
(3) 1 Stop
(4) 1 Safety Ring for each size of Slips
Unitizer
Retainer Screw
Friction Retainer
NOTE: To order optional nuts, use standard nut number with suffix -A for mill type, -B for
sub type and -C for sidehill type nuts. Include O.D. spear used with and connection, if sub
type. Refer to page 21 for illustrations of optional nuts.
Send for Bowen ® Technical Manual No. 2100 which includes complete descriptions
of construction, operation, maintenance, and parts listing for Bowen ® Full-Circle
Releasing Spears.
FISHING TOOLS
Top Sub
Protector
Body
Sleeve (Integral
with Body)
Slip Upper Finger
(Integral with Slip)
Slip
For Drill Pipe and Tubing
(Equipped with Friction
Spring Assembly)
Friction Spring
(Integral with
Friction Retainer)
Stop
Safety Ring
Nut
Nut Set Screw
Slip Lower Finger
(Integral with Slip)
Body
Sleeve
(Integral with Body)
Slip Upper Finger
Slip
For Casing
(Equipped with Friction
Block Assembly)
Unitizer
Retainer (2 pcs.)
Retainer Screw
Outer Block Spring
Inner Block Spring
Friction Block
Stop
Safety Ring
Nut
Nut Set Screw
Full-Circle Releasing Spear for Drill Pipe and Tubing
Nominal Size 2 3/8 D.P. 2 3/8 Tbg. 2 7/8 D.P. 2 7/8 Tbg. 3 1/2 D.P. 3 1/2 Tbg. 4 D.P. 4 Tbg. 4 1/2 D.P. 5 1/2 D.P.
Recommended Catching Range 2 3/8 D.P. 2 3/8 Tbg. 2 7/8 D.P. 2 7/8Tbg. 3 1/2 D.P. 3 1/2 Tbg. 4 D.P. 4 Tbg. 4 1/2 D.P. 5 1/2 &
or Tbg. 5 9/16 D.P.
O.D. Smallest Slips Retracted 1 11/16 1 29/32 2 2 5/16 2 7/16 2 13/16 3 3/32 3 5/16 3 15/32 4 1/2
Expansion Slips Over Safety Ring 11/32 11/32 3/8 3/8 13/32 13/32 15/32 15/32 1/2 9/16
Slip Engagement Area (sq in) 55 59 74 87 95 115 126 135 178 265
Complete Assembly Part No. 6175 6693 6246 6684 7640 6701 7648 6710 6715 6723
Weight 32 40 55 60 71 92 107 127 180 270
Optional Accessories
Safety Ring Packoff Part No. 6181 6174 6252 5779 6268 6709 6683 5730 6722 6484
Weight 5/8 3/4 1 1 1/4 1 1/2 1 3/4 2 1/2 2 3/4 3 1/2 6
Extension (3 ft. Long) Part No. 6176-6177 5858-6694 6247-6248 5771-6685 6263-7641 6702-6703 6676-7649 5839-6711 6270-6716 6277-6724
Weight 22 26 29 40 46 60 70 75 85 130
Full-Circle Releasing Spear for Casing
Nominal Size 4 1/2 5 5 1/2 6 6 5/8 7 7 5/8 8 5/8 9 5/8 10 3/4 113/4 13 3/8
Recommended Catching Range 4 1/2 5 5 1/2 6 6 5/8 7 7 5/8 8 5/8 & 9 9 5/8 & 10 10 3/4 11 3/4 13 & 13 3/8
4 3/4 & 5 & 12
Expansion Slips Over Safety Ring 1/2 1/2 9/16 9/16 5/8 5/8 5/8 11/16 3/4 13/16 13/16 13/16
O.D. Smallest Slips Retracted 3 25/32 4 4 1/2 5 1/2 5 1/2 5 3/4 6 7/16 7 1/4 8 3/16 9 1/2 10 9/16 12
Slip Engagement Area (sq in) 210 217 265 315 350 365 430 485 580 690 785 890
Complete Assembly Part No. 10536 9337 9342 9347 9796 9352 10608 6318 10473 6067 6073 6081
Weight 132 169 226 283 358 398 502 652 833 1240 1552 2017
Optional Accessories
Safety Ring Packoff Part No. 6734 7583 6484 6041 6487 6047 6055 6529 6063 6072 6080 6088
Weight 4 5 6 7 9 10 12 17 23 35 44 59
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