The Reverse Circulation Junk Basket is used to retrieve all types of small junk objects in well bores. Such as bit cones, cutting blades and hand tools, etc..
During operation, with the steel ball dropped into the valve seat, fluid flow in a continuous stream to the center of the tool and up through return ports in the upper end of the barrel, all junk is thus carried into the barrel above the junk catcher.
Specifications:
|
Hole size |
5-5/8〞~6〞 |
7-1/2〞~ |
8-3/8〞~ |
9-5/8〞~ |
16〞~ |
|
O.D. |
5-1/8〞 |
7〞 |
7-7/8〞 |
9-1/8〞 |
15〞 |
|
Steel ball |
1-3/8〞 |
1-11/16〞 |
1-11/16〞 |
2-1/4〞 |
2-1/4〞 |
|
Max diameter |
3-3/4〞 |
5 3-16〞 |
6-1/16〞 |
7-1/16〞 |
11-1/8〞 |
The Releasing and Circulating Overshot is simple and rugged and is strongest tool available to externally engage, pack off and pull a fish.
The tool consists of three basic external parts: the top sub, bowl, and guide. The internal catch mechanisms are of two basic types: If the fish diameter is substantially less than maximum catch size, a basket grapple and control packer are used; If the fish diameter is near the maximum catch size, a spiral grapple, spiral grapple control and type “A” packer are used. All sizes and mechanical properties of the overshot we provide conform to SY/T5068-2000 standard and the OD range of the fish is in sizes 32mm through 280mm.
When ordering or requesting quotation, please specify:
1.Type of overshot;
2.OD. of fish to be caught;
3.Size and type of top connection;
4.If size other than standard, please specify clearly. etc.