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Category Archives: Shear pump

Shear pump main features of solid control system

Shear Pump is a professional pump for solids control equipment.The drilling fluid additives are high-molecular polymer, whose molecular weigh is high. It is difficult to hydrate if putting them in the drilling fluid directly. So it is needed to pre-shear the high molecular. This kind of Shear Pump can not only provide high cutting efficiency and accelerate the process of dilute and hydrate polymer, but also offers high capacity and head and satisfy the requirement of mud preparation and processing.

shear pump

As one very important equipment within the drilling fluid circulating system, shearing pumps perform the dual function of cutting and pumping, making the drilling fluid ideally suited for every drilling requirements of reducing solids size and/or protection of it’s downstream equipment.

Features of shear pumps :

1.Shear pump adopts a set of mechanical seal for no leakage at stuffing box
2. Using the unique research and development of mechanical seal technology , novel and unique design at home and abroad , the seal performance is advanced , reliable operation and long service life .
3. Greatly improved bentonite particles hydration degree , reduces the bentonite clay need by 30%.
4. For polymer or clay rapidly hydration provide high shear force , solving polymer (or clay ) in the drilling fluid that hydration is bad and prominent problems .
5. 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.

Any detail information please feel free to contact me.

Solutions for shear pumps malfunction

Shear pumps can provide high shearing efficiency, expedite polymer dilution and hydration process. There are many molecular weight
of high-molecular polymer in drilling fluid and difficult to hydrate. So the high-molecular polymer need preshear. Shear pump provide higher flow and lift to meet the requirements of compound and process drilling fluid.

1. Packing seal problem of shear pumps

Malfunction: Packing seal leaked seriously, packing and the surface of sleeve is heavy wear.
Solution: Dismantling the packing, use a wire bent 90 degrees move in the sleeve wall, replace the sleeve if check out have a deep groove. Too tightly on the packing gland lead to severe wear.

shear pumps

2. polyurethane of shear pumps.

Malfunction: Oil seal severe wear caused leakage.
Solutions: Replace the polyurethane, usually, replace the polyurethane seal and sleeve after the pump running 3-6 months.

3. Shear pump packing burn out.

Reason: Packing too tightly cause overheating.
Solution: replace the packing, gland can’t be too tight.

4. Abnormal rotation of impeller or associated impeller.

Reason: Small interval between the back of impeller and backplate, or associated impeller and backplate or packing box.
Solution: Using screw bolt and nut adjust the interval. After the adjustment rotating shaft by hand, each parts can not have stuck, grating and rotary flexible.

Importance of use shear pump in solid control system

Shear Pump is new tape equipment which provides the fast configuration and treatment mud for the user, the user satisfy with configuration high performance mud. It can meet the requirements of customers with high-performance mud.

To improve the drill fluid properties, the polymers or clay should be highly sheared before adding them to the drill fluid system. The product can effectively mix and fully hydrate the material added into the drilling fluid, which can save the added polymer and shorten mud configuration time.

shear pumps

Structure features of drilling fluid shear pumps

1. Through special design, the impeller which is the main component of the mud shear pump has a wider flow path and smooth vanes.
2. The shaft of the product is designed with high strength to bear certain load.
3. With a hopper, mud gun and transfer line orifice plate available, the mud shear pump can be used as a belt driven or diesel driven package.
4. The pump is equipped with stainless steel turbine and a shear plate.
5. The turbine drilling mud shear pump installed in the special base ,and pulley, narrow V belt and 55KW/75kw explosion-proof motor drives

Function of shear pumps

1. Make the compounds dilute, shear and hydrate in a shorter time while saving over 30% of bentonites;.
2. Greatly enhance the hydration of the soil particles.
3. Shear pump can mix material effectively, fully hydrate material, save material using, shorten drilling fluid preparation time, supply good drilling fluid performance to drilling process.

Features of DCJQB Series Shear Pumps

shear pump

The DCJQB series shear pump offers an economical and compact method of shearing polymers into the fluid stream. When properly sheared, polymers can pass through the shaker screen without having to use larger screen sizes that could cause the loss of excess drilling mud. Shearing is accomplished with the addition of our proprietary stuffing box and shear impeller to the standard DCJQB shear pump. There are no modifications to existing piping required and the DCJQB shear pump is constructed of the same materials as the original DCSB centrifugal pump series. To improve the use of your solids control expenditures use the DCJQB Shear pump to add polymers to your solids system.

Common applications include:

  1. Polymer Additives
  2. Particle Degradation

Typical configurations:

  1. 6×5-14
  2. 8×6-14

Shear Pump’s Common Failures and Solving Methods

shear-pump1. Exceeding shaft power
    Reason

1) The impeller fractionates the end face of pump casing, the sleeve or auxiliary impeller.
2) The pump works under the condition of than the designed head.
3) The packing is over-tightened.
4) The belt slips.

    Method of shooting

1) Adjust the clearances.
2) Inspect the complete machine and properly close the delivery valve for the pump to operate at the design point.
3) Readjust the locking force of gland.
4) Re-tighten them (check the two pulleys installation position).

2. Fall in head and capacity
    Reason

1) Big particle jams the suction pipe and flowing channel of impeller.
2) Fall in speed.
3) The impeller is worn.
4) Too much clearance between the impeller and end face of pump casing and the increased leakage.
5) The opening degree of inlet valve is little.

    Method of shooting

1) Clear away the jamming object.
2) Operate the pump at the rated speed.
3) Renew the impeller.
4) Adjust the impeller.
5) Increase it.

3. The bearing is overhead.
    Reason

1) The lubricant is too much or little.
2) There is impurity in the lubricant.
3) The bearing is worn.

    Method of shooting

1) Keep the surface oil at the limited lever of the dipstick.
2) Change of the lubricating grease.
3) Renew the bearing.

4. The pump produces vibration and unusual noise.
    Reason

1) The impeller is worn and non-equilibrium.
2) The bearing is worn.
3) The connection is loose.
4) The pump occurs cavitation.

    Method of shooting

1) Renew it.
2) Replace.
3) Tighten the loosened locations.
4) Improve the suction condition to prevent air from getting into the pump.

5. The leakage is excessive when stopping the pump.
    Reason

1) The seal is over-worn.
2) The shaft sleeve is extremely worn.
3) The packing is extremely worn.
4) The asbestos rings are slantingly rolled up.
5) The debris gets into the packing rings.
6) All the splits of packing rings are in the same direction.

    Method of shooting

1) Renew.
2) Replace the sleeve.
3) Renew.
4) Re-install.
5) Clear away the debris and clean the seals.
6) Re-fill them as request.

High quality Shear pump for sale

Shear pump is on the basis of existing centrifugal pump theory, through the improvement to develop a new, efficient centrifugal pump, is designed for quick preparation and dispose drilling fluid in the solids control equipment system.

The main application is shear polymer clay, it can mix material effectively, fully hydrate material, save material using, shorten drilling fluid preparation time, supply good drilling fluid performance to drilling process.

In use process of  shear pump, we should notice some details: 1 After using shear pump, we should use clear water flush pipeline and shear pump, to avoid leftover block runner and nozzle of impeller. 2 Bearing bore is filled in grease about 10~20ml every other week, combination seal cavity is filled in grease about 10~20ml every day. 3 In winter, if the pump will not used for a long time, drilling fluid in pump shell should be discharged, to avoid drilling fluid freeze.

DC Machinery is a professional manufacturer of  shear pump, the 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%.

The following is the DC Machinery shear pump parameters:

Model 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

Matters needing attention of using shear pump

Shear pump is on the basis of existing centrifugal pump theory, through the improvement to develop a new, efficient centrifugal pump, is designed for quick preparation and dispose drilling fluid in the solids control system. The main application is shear polymer clay, it can mix material effectively, fully hydrate material, save material using, shorten drilling fluid preparation time, supply good drilling fluid performance to drilling process.

Matters needing attention of using shear pump:

1 After using shear pump, we should use clear water flush pipeline and shear pump, to avoid leftover block runner and nozzle of impeller.

2 If the shear pump begin to used after nonuse for a long time, we need to fill lubricating oil in combination seal cavity and bearing bore.

3 Before starting shear pump, we must open inlet and outlet valve of pump firstly.

4 Bearing bore is filled in grease about 10~20ml every other week, combination seal cavity is filled in grease about 10~20ml every day.

5 Adjust the small gland of combination seal cavity once a week, When cannot adjust should change the two packing in time.

6 In winter, if the pump will not used for a long time, drilling fluid in pump shell should be discharged, to avoid drilling fluid freeze.

 If we can maintain shear pump correctly, the working efficiency of shear pump will be improved greatly, and the service life will be also extended.

High quality shear pump-DCJQB series

Shear pump is on the basis of existing centrifugal pump theory, through the improvement to develop a new, efficient centrifugal pump, is designed for quick preparation and dispose drilling fluid in the solids control equipment system. The main application is shear polymer clay, it can mix material effectively, fully hydrate material, save material using, shorten drilling fluid preparation time, supply good drilling fluid performance to drilling process.

DCJQB series shear pump is produced by China manufacturer-DC Machinery.

The structure of DCJQB shear pump

The 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 effciency.

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.

Features of  DCJQB 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%.

Shear pump delivery capacity is better, mix emulsify effect is good, delivery capacity is about 0.3MPa. In oilfield, it mainly used for shearing polymer in drilling process, can dissolve saline quickly, reduce preparation time of drilling fluid.

 

 

 

Oilfield drilling fluid shear pump for sale

Shear pump is on the basis of existing centrifugal pump theory, through the improvement to develop a new, efficient centrifugal pump, is designed for quick preparation and dispose drilling fluid in the solids control equipment system. The main application is shear polymer clay, it can mix material effectively, fully hydrate material, save material using, shorten drilling fluid preparation time, supply good drilling fluid performance to drilling process.

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 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%.

Shear pump is under high-speed operation of the motor, drilling fluid high speed motion in very narrow space which between rotor and stator. Under the effect of mechanical motion and centrifugal, drilling fluid will be high speed sheared, uniform mixing, grinded, emulsified, etc. Shear pump delivery capacity is better, mix emulsify effect is good, delivery capacity is about 0.3MPa. In oilfield, it mainly used for shearing polymer in drilling process, can dissolve saline quickly, reduce preparation time of drilling fluid.

DC Machinery is a professional manufacturer of solids control equipment in china. We will provide our client high quality products with most reasonable price, at the same time we also sincerely offer the high level after sales service for any home or abroad clients. We still adhere to the concept of creating the maximum values and the satisfaction for our clients. The following is the 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
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