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 bypass valve
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1. Multi-opening bypass valve
Structure composition
Multi-opening bypass valve the novel cycle joint that can achieve the unrestricted free conversion between the outside circulation and the normal circulation. Mainly consists of three parts: the shell, the valve element and the spring. 
2. Anti friction joint series
Features:
1. The wearing bush enhanced with PTFE as a whole sintering, in the use of going underground without falling off and falling block.
2. The surface friction coefficient of the wearing bush is very low, and the wearing bush has a strong self lubrication performance, greatly reduced the wear of the casing.
3. The anti abrasion joint has a high wear resistance.
4. The wearing bush enhanced with PTFE , its temperature reached 200 degrees above, there is good resistance to acid and alkali.
6. Has a good performance of reducing torsion, the wear resistance decreased by 20%, the torque decreased by about 30%.
7. The structure is simple, and is convenient for the field installation and use.

3.Anti-drag, Reduce Torque Double-acting Stabilizer Series
Features:
1. Stabilizer coat with the roller design, when the drill up and down movement, its means of friction by sliding friction into rolling friction, thereby significantly reducing drilling tools to lower friction resistance.
2. Drill string for the spindle rotates friction with the friction between stabilizer coat, the rolling friction between roller and sidewall stabilizer coat, greatly reduce the friction resistance, so that the shaft of the drill string friction torque is greatly reduced.

4.Rotary drill pipe protector series
Features:
1. The wearing bush enhanced with PTFE as a whole sintering, in the use of going underground without falling off and falling block.
2. The surface friction coefficient of the wearing bush is very low, and the wearing bush has a strong self lubrication performance, greatly reduced the wear of the casing.
3. The anti abrasion joint has a high wear resistance.
4. The wear proof sleeve can rotate freely between the fixing ring and the inner sleeve, thereby reducing the friction resistance between the sleeve and the sleeve, and improving the service life of the sleeve.
5. The wearing bush enhanced with PTFE , its temperature reached 200 degrees above, there is good resistance to acid and alkali.
6. Has a good performance of reducing torsion, the wear resistance decreased by 20%, the torque decreased by about 30%.
7. Wear prevention sleeve has a longer service life, the service life of more than 500 hours.
8. The structure is simple, and is convenient for the field installation and use. The product can be directly fixed on the drill pipe.

5.All Metal Down Hole Hydraulic Oscillator Series
1. Introduction of Hydraulic Oscillator 
 
A hydraulic oscillator is used to solve the bottom hole pressure, Improve drilling and pressure transmission. Particularly suitable for use in horizontal wells, large displacement wells. It can be used at the same time as MWD, down hole power drill and any drill bit.
Our hydraulic oscillator includes power components, are all metal material, tool body parts without rubber components, widely used in various drilling conditions, in conventional tools to work well at high temperature, oil base mud, saline formations such as conditions can be completely normal use.

6.Casing, Tubing Stabilizer Series Rigid Casing Stabilizer Series
 
Feature:
1. in the process of pipe string into the well, the block is more easy to pass through the spiral groove.
2. In the outer ring air pipe, a swirl flow is generated, change the flow, improve the displacement efficiency when the cement slurry passes through the spiral groove of the correction device.
3. The drum shape and anti dropping wheel design, greatly reducing the contact area of the pipe string and borehole wall, thereby reducing the friction force between the wellbore and and enhanced by the safety coefficient of complex wells.
4. Site installation and use is convenient.

7.Well Completion Oscillation Screw

Composition:
Coiled tubing drilling
8.Hydraulic Impactor series
9.Hydraulic rotary casing guide shoe
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