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Monthly Archives: August 2020

JBQ series mud Agitator advantages and shortcomings

JBQ series mud Agitator, Less than 5.5 kW drilling mud Agitator adopts the blender cycloid speed reducer, and it is applied to the drug liquids mixing tank. This mud agitator has the advantage of compact structure so it occupies small area. More than 7.5 kW Mud Agitator uses the turbo and worm gear speed reducer, with the large torque transmission、 the revolution is steady、it works reliablely and has great merit. Common model of mud agitator is JBQ5.5kW 、JBQ7.5kW 、JBQ11kW and JBQ15kW.

agitators

The advantages of mud agitators

1All kinds of the gear boxes and the combination of the impellers can adopt t most requirements.
2It is efficiency in the deep and big containers
3It can design the appropriate shearing force according to the requirements.
4It expose more liquid which touching the atmosphere, help cooling drilling fluid.

mud agitator

The shortcoming

1The drilling fluid in the different containers can’t be blended, the drilling fluid can’t be shifted.
2In most cases need power supply.
3It is maybe exist dead zone.
4It is need installed partitions

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The important functions of drilling fluid shear pump

Shear pump is already used and the theory confirms efficiency and specialized machine that can shear polymer and clay. In drilling system, after the polymer and clay is fully sheared enter into drilling fluid system that can give full play to its function and improve drilling fluid performance.

If it can’t be fully sheared, polymer maybe block shaker screen in first circulation loss large polymer, increase drilling cost and make the large size solid phase particles is harden and difficult to eliminate.

Because don’t have fully shearing in completion fluid the polymer will produce many “fisheye”. The fisheye will damage stratum and make its permeability is decreased, the oil gas level is reduction of output.

shear pump

Shear pump provides high shearing for high molecular polymer to rapidly hydration, solving the problems that the polymer can’t be well hydrated in drilling fluid or completion fluid.

Using shear pump can decrease above 15% of polymer dosage, the dosage of bentonite will be decreased above 30% and improve mud cake and fluid loss, decrease drilling fluid shearing ration rate, improve jelly strength, the shaft seal structure is more reliable has excellent performance and use maintenance is more convenient.

shearing pump

The function of shear pump.

Shear pump can improve the extent of hydration of move soil particles.

The dispersion of move soil particles in water and extent hydration is decided: the content of electrolyte, time, temperature, the number of replacement cationic and concentration. All other things were equal use shear pump can save above 30% bentonite

Shear pump can make polymer shear dilute and hydrate rapidly.
The molecular weight of high-molecular polymer is higher which is used in mud, it is difficult to hydrate is directly added, so to high molecular polymer need be sheared. Shear pump can provide high shearing efficiency and to speed up the polymer dilution, hydration process.
Shear pump can provide higher head and displacement can meet the requirement of matching and dispose mud.

 

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