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Mar 09

Almost every kind of drilling will request drilling mud or drilling fluid as we call it. There will be drilling cuttings invade to drilling mud during drillings. So we need solids control or other drilling mud process on drilling fluids during well drilling or HDD. This will decrease much cost on drillings.

During solids control, centrifugal pump is mainly treated as power for transfering fluid from equipment to another, from one compartment to another one

Solids control system configuration

Usually, the solids control system is 4 phases. Including shale shaker, Desander, Desilter, or mud conditioner, then the decanter centrifuge. This configuration is considered as modular configuration. However, we also know, different clients have different requirements on certain drilling conditions, etc. So the system will be combined with standard equipments as optimal system for individual users

After knowing the solids control systems cocnfiguration, we’ll get how many centrifugal pumps we need. And in each specific system configuration centrifugal pump will have certain special applications


Centrifugal pump applications in system

1. Different centrifugal pumps

In solids control system or mud recycling system. There is usually two types centrifugal pump. Including vertical centrifugal pump mainly is subermsible slurry pump and horizontal pump.

If in HDD mud recycling system, there maybe submersible slurry pump to suck drilling mud from mud pit. Of cours, submersible slurry pump also can be treated as feeding pump for desander, desilter, or mud cleaners.

Solids Control Centrifugal Pump

Solids Control Centrifugal Pump

For majority solids control system, to feed desander, desilter and mud cleaner will use horizontal centrifugal pump. The applications is pump drilling fluid from one space to another. Make drilling mud having power to flow during serveral compartment and equipments

2. Detailed centrifugal pump applications

Take mud cleaner for example. The drilling mud after processed by shale shaker will drop down to shale shaker compartment, then we need to process it by mud cleaner. Firstly, centrifugal pump will transferr drilling fluid from this compartment to desander cones, after desander processing the mud drop down to desander compartment.

We need drilling mud more fine and high property. Then we come to desilter. At this time, centrifugal pump will pump drilling fluid to desilter cones. Then we’ll get relative clean mud without particles larger than 15 microns

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written by GN Desander Desilter \\ tags: , , , , ,

Aug 16

GN produced drilling fluids decanter centrifuge and the feeding pump. Usually screw pump is used in oilfield drilling as feeding pump of centrifuge, but sometimes we choose submersible slurry pump in the solids control system as centrifuge’s feeding pump.

1 G series screw pump

G series single screw pump for pumping neutral or corrosive liquids, uncontaminated or abrasive liquids, liquids containing gases or which tend to froth, and liquids of high or low viscosity, including liquids containing fibrous and solid material. G series single screw pump Principal fields of application Food industry, Texil mill, Paper-making, Petro-industry, Chemical industry, Ship building, Build industry, Nuclear industry, Metallurgical and mine etc. It is designed according to Chinese standard.

2 EH series screw pump

EH series screw pumps are usually installed horizontally, have flange connection and may universally be used in all industries for handling non- viscous, neutral or abrasive media, with or without solid and fibrous matter.The EH design is available in 1-stage(6 bar), 2-stage(12 bar) and 4-stage(24 bar) pressure range.

Suction and Discharge ports can be interchanged by simple reversal of direction of rotation of pump.

screw pump for decanter centrifuge

screw pump for decanter centrifuge

Advantages of EH

  • EH Pumps can be used with virtually any type of driver
  • Available in numerous rotor/stator material combinations
  • Ability to handle fluid gently and with extremely low shearing
  • Various combination of casing materials available viz. CI, Carbon steel, Stainless steel etc.

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written by GN Desander Desilter \\ tags: , , , , ,

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