FISHING TOOLS - National Oilwell Varco
FISHING TOOLS - National Oilwell Varco
FISHING TOOLS - National Oilwell Varco
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48<br />
Tubing and Casing Rollers<br />
Bowen ® Tubing and Casing Rollers<br />
NOV Downhole Bowen ® Tubing and Casing Rollers are simple, rugged tools for restoring<br />
buckled, collapsed, or dented casing to its normal diameter and roundness. There are no pins,<br />
springs or other small parts to break or lose in the hole, making it safer to use and easier to<br />
maintain than other rollers. Operation is very simple, requiring only ample fluid circulation and<br />
slow rotary speeds.<br />
Bowen ® Tubing and Casing Rollers are composed of a mandrel with a series of eccentric roll<br />
surfaces, each of which is assembled with a series of heavy-duty rollers. These rollers are<br />
secured by a nose cone which is locked to the mandrel by aseries of husky ball bearings,<br />
running in a race between the nose cone and lower mandrel end. These tools may be<br />
redressed to roll a larger size by changing the rollers to proper oversize rollers.<br />
The Casing Roller is equally effective using rightor left-hand rotation and left-hand connections<br />
will be furnished on request. Lower stinger connections may be furnished on a special nose<br />
cone or on the lower mandrel end on request, at additional cost.<br />
RECOMMENDED SPARE PARTS:<br />
(1) 1 Middle Roller, Each Casing Size<br />
(2) 1 Nose Cone, Each Casing Size<br />
(3) 1 Set of Ball Bearings<br />
(4) 2 Loading Slot Set Screws<br />
Send for Bowen ® Technical Manual No. 6200 which completely describes the construction, operation, and maintenance<br />
of Bowen ® Casing Rollers.<br />
Bowen ® Tubing and Casing Rollers<br />
Mandrel<br />
Upper Roller<br />
Middle Roller<br />
Lower Roller<br />
Ball Bearings<br />
Nose Cone<br />
To Roll Casing Size 2 3/8 Tub. 2 7/8 Tub. 3 1/2 Tub. 4 4 1/2 5 1/2 6 5/8 7 5/8 9 10 3/4 13 16<br />
3 1/2 LP 4 3/4 5 3/4 7 8 5/8 9 5/8 11 3/4 13 3/8 18 5/8<br />
4 Tub. 5 6 10 12<br />
Top Connection IDSS 1 13/16 API EUE API API API API API API API API<br />
Hardy Griffin FJ 1 1/4 Reg. 1 1/2 2 3/8 Reg. 2 7/8 Reg. 3 1/2 Reg. 4 1/2 Reg. 4 1/2 Reg. 6 5/8 Reg. 6 5/8 Reg. 6 5/8 Reg.<br />
Circulation Hole 3/8 3/8 5/16 1/4 1/2 5/8 1 1 1/4 1 1/2 1 3/4 2 2<br />
Length of Individual Rollers 3 3 3 4 4 5 6 7 8 9 10 11<br />
Complete Assembly<br />
Part No. 28802 26395 29046 28963 20660 29010 20920 20930 20940 20950 20960 20970<br />
Weight 11 1/4 40 22 41 1/4 60 128 171 256 392 890 1349 1690<br />
Mandrel<br />
Part No. 28803 26396 29501 28964 20661 20911 20921 20931 20941 20951 20961 20971<br />
Weight 6 22 12 26 33 68 80 116 160 600 950 1000<br />
Nose Cone<br />
Part No. 28807 26400 29050 28965 20662 20912 20922 20932 20942 20952 20962 20972<br />
Weight 1 3 2 1/4 3 1/4 5 1/4 6 17 30 42 60 120 340<br />
Lower Roller<br />
Part No. 28806 26399 29049 28966 20663 20913 20923 20933 20943 20953 20963 20973<br />
Weight 1 3/4 5 2 13/16 6 3/4 9 16 28 40 80 90 160 250<br />
Middle Roller<br />
Part No. 28805 26398 29048 28967 20664 20914 20924 20934 20944 20954 20964 20974<br />
Weight 1 1/2 4 2 3/4 4 8 16 26 40 80 90 110 250<br />
Upper Roller<br />
Part No. 28804 26397 29047 28968 20665 20915 20925 20935 20945 20955 20965 20975<br />
Weight 1 3 2 1 1/4 5 9 20 20 30 50 105 250<br />
Ball Bearings<br />
Part No. 17294 17294 27940 20666 20666 20666 20926 20936 20936 20936 20966 20966<br />
Weight 1/16 1/16 1/16 1/16 1/16 1/16 1/8 1/4 1/4 1/4 1/2 1/2<br />
No. Req’d 9 13 9 7 9 13 15 12 16 24 21 28<br />
Loading Slot Set Screw<br />
Part No. 28808 26401 29052 20667 20667 20917 20927 20937 20937 20957 20967 20977<br />
Weight 1/16 1/16 1/16 1/16 1/16 1/16 1/8 1/4 1/4 1/4 1/2 1/2<br />
Oversize Rollers (same part numbers as above) are available in 8 5/8, 10, 11¾, 12, and 18 5/8 inch sizes.<br />
Bowen ® Tubing and Casing Rollers
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