Tag Archives: Drilling Fluid Shear Pump

Shear pump is a auxiliary equipment in solid control system. It is used to effectively mix and hydrate material added into drilling fluid. With large capacity, high lift, and long reliable service life, the shear pump can speed up dilution and hydration of polymers to have high property mud.

There are several parts in shear pump, including impeller, volute, packing case, shaft, combination belt and other machines. So how to efficiency and right use and maintain the shear pumps ? Below is the maintenance methods of shear pumps.

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Maintenance:
1)Clean the pumps and pipelines with clean water to avoid blocking impeller channel and nozzles
2)The first operation or operate shearing pump after long time we need to lubricate seal case and bearing case
3)Before running shearing pump we must open the inlet and output gate
4)Feed 10~20ml lubrication grease in bearing case every week. Feed 10~20ml lubrication grease in seal case very week
5)Adjust seal case cover every week if we can’t adjust it anymore then we need to replace two packings. 2 ends of new packing request 45°degree. Make sure packings touch each other tight on the bearings when install them every 2 packings should be 90-150° degree direction
6)In cold seasons if pump will be stopped long line please screw out the nut under pump case release drilling fluid to avoid freezing.

DC Machinery research large number of domestic and foreign shear pump based on the improvement of shearing pump, comprising a complete shear and hydration system, quick shear dilution, a hydratable polymer.

The shear pump can mix and hydrate fully the materials which were added into the mud, to save the usage of mud materials, shorten the
mix time and to supply good- performance mud for the drilling. It can greatly improve hydration degree of soil particle moving. JBQ
series shear pumps can save bentonite above 30%.

Shear pump is composed by impeller, volute, support, packing case, transmission shaft, pulley, combination belt and electrical
machine. The impeller of the shear pump is different with the water pump, the structure is more complex. It is the core part of the
shear pump, with high efficiency.

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The impeller is made up by 5 parts: axial compressor turbine, stock solution tank, pump impeller, pressure cabin and shear plate. The
axial compressor turbine, pump impeller and stock solution tank were casted critically as a ensemble by stainless steel, the
structure is very compact.

The pump is single stage and single section of cantilever type centrifuge, it provides shearing function with guide liquid type,
centrifugal combination impeller and shearing plate. The special structure liquid end impact shearing plate, make it high speed
shear, in order to complete agitate to fluid.

 

Drilling fluid shear pump is used to drilling fluid mixing, This series of shear pump can mix and hydrate feeding material completely and save raw material. It also reduce the mud cake and fluid loss , reduce drilling fluid shear rate , improve the gel strength , so as to achieve the advanced international level.

shear pump

Structure of shear pump

Drilling mud shear pump through the special design, the impeller which is the main component of the mud shear pump has a wider flow path and smooth canes. It can meet the requirements of customers with high-performance mud. The product can effectively mix and fully hydrate the material added into the drilling fluid, which can save the added polymer and shorten mud cinfiguration time. As an ideal solid control device, the product and provide high quality drilling fluid for drilling process. It can shear the high polymer in the drilling mud to ensure the polymer can pass through the shale shaker screen.

Shear-Pump

Features & Benefits of Shear Pump

1. Greatly enhance the hydration of the soil particles.
2. Make the compounds dilute,shear and hydrate in a shorter time while saving over 30% of bentonite.
3. Offer larger capacity and lift to meet the demands on concoction and mud processing.

DC Machinery shear pump

DC Machinery is a professional drilling fluid shear pump manufacturer, and our equipment sells 38 countries, why we become the leader of the solid control industry mainly basic on the studying large number of domestic and foreign advanced technology ( how to improve the shearing pump, comprising a complete shear and hydration system, quick shear dilution, a hydratable polymer).

JQB series shear pump is also called centrifugal pump, which is munufactured by DC solids control. As we all
know, there are only no more than 10 manufactures who can produce shear pumps in china at present. DC is one of
the top 10 manufactures for oilfield drilling mud solids control system.

The drilling fluid which transported by shear pump contains abrasiveness fine particle, working condition is very
bad. If the shaft seal of shear pump is leak, it will not only lead to reduce pump efficiency and waste drilling
fluid, but also cause serious environmental pollution. Therefore, efficient and reliable seal quality is the key
of ensure shear pump normal, continuous and safe operation.

shear pump

Shear pump can greatly enhance clay particle extent of hydration, make the polymer be sheared, diluted and
hydrated as soon as possible, can save bentonite more than 30%.

Drilling fluid shear pump applies the axial suction structure, consisting of motor,pump seat, pump shell,
impeller,shearing impeller and other components.Belt and mechanical compound seal guarantee no leakage. There is
a stainless turbine inside(which composes entrance bucket, main impeller, nozzle,catch compartment)and a 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 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.

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.

Shear pump is base on the centrifugal pump theory, according improvement and developed the new, high efficiency centrifugal pump, it is the equipment which is rapid configuration and process drilling fluid in solid control equipment matching system, the main use is shearing polymer clay when allocate drilling fluid, it can effective mix and fully hydrated all the materials in drilling fluid, save the drilling materials, shorten the time of drilling fluid allocation, provide good performance drilling fluid for drilling process.

Shear pump transport the drilling fluid with small particles, working condition is very bad, when the shaft seal of shear pump is leakage, it can causes the efficiency of pump is decrease and waste drilling fluid, also can pollute environment. So high efficiency and reasonable seal quality is the key of ensure shear pump normal and safety operate.

Structure

The pump is single stage and single section of cantilever type centrifuge, it provides shearing function with guide liquid type, centrifugal combination impeller and shearing plate. The special structure liquid end impact shearing plate, make it high speed shear, in order to complete agitate to foluid.

Characteristic

The shear pump can mix and hydrate fully the materials which were added into the mud, to save the usage of mud materials, shorten the mix time and to supply good- performance mud for the drilling. The shear pump can increase the hydration degree of the particles, quicken the attenuation and hydration of the polymer and offer a high output volume and lift to match the requirement of preparation and mud.

DCJQB Shear Pump Parameters

Type JQB6545 JQB6535
Flow 120m3/h 100m3/h
Lift 45m 35m
Power 55kw 45kw
Weight 980kg 800kg
L×W×H 1150×1100×1500mm 1150×1100×1250mm