Releasing And Reversing Overshots - Chinaprice: contact company for price
fishing tool, has many advantages owned by various overshot,
box tap and the like, Its distinguishing features are as
follows: to unscrew and recover the stuck fish: To release
the fish down hole if necessary, to circulate the washing
fluid as one of the accessories for reversing tools, it is
widely used in well servicing.
Structure and application
Is consisting of top sub, spring, bowl, retaining seat,
slip, control key, seal ring, seal seat, guide and so on.
The upper end of top sub is connected with other tools and
drill tool: The lower end of top sub is connected with bowl
equipped with spring in the interior, There are three control
keys uniformly distributed in the inner wall of the upper
end of bowl, the control keys are used to control the
position of retaining seat, Three keys are inserted
separately in three grooves in the tapered interior section
of lower end in bowl where three keys are used to transmit
torque, The tapered interior section produces a pinch force
against the slip to effect the fishing operation. The
reversed operation can be effected when three keys transfer
the torque from bowl to slip.The inclined angle among three
control keys play an important role in retaining of slip
conforming with bowl to ensure that the tools can be
released easily from fish.
The retaining seat is installed at the upper end of external
bowl where three keys are placed, the retaining seat not
only can slide axially but also rotate round axial line so
as to move with slip which is installed in internal circular
Specifications - Releasing and Reversing Overshot
Allowable Pulling Force
Start Pulling Force and Torque
Tensile Force (KN)
2 7/8 REG
2 3/8 IF (NC26)
2 7/8 IF (NC31)
3 1/2 IF (NC38)
4 1/2 IF (NC50)
- Posted By: Tianhe Oil
- Phone: 00862131150073
- Address: No.2999 Xinyang Road,Fengxian District, Shanghai, China
- Website: http://www.tianheoil.com
Published date: January 9, 2014 -
- Business Description: Tianhe Oil Group is a comprehensive enterprise of equipment
manufacturing and oilfield service providing. The company is specialized
in innovation, manufacture and sales of drill and petroleum extraction
tools, equipments and oil field services.
Tianhe Oil Group is the council member of CPEIA (China Petroleum and Equipment Industry Association), rewarded as national level of Hi Tech enterprise. The company is a Chinese well known trademark enterprise. It has been certified to ISO, API, NS 1, and HSE management system.
The company has developed a strong domestic sales network covering all oilfields of CNPC, SINOPEC and CNOOC. Currently, our products and equipments have been exported to 45 countries, overseas business has covered 80% of our company sales.
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