Drilling mud process submersible slurry pump

Drilling mud process submersible slurry pump is widely used to feed fluids into decanter centrifuge. Such a pump is rather compact and anti-abrasive. We call a submersible slurry pump as a maintenance-free pump. Besides used in oil drilling fluids process, a submersible pump is widely used in HDD, trenchless, CBM mud recycling, too. At the job site, slurry pump set vertically in desilter tank for mud feeding into a centrifuge.

For HDD and other mud systems in civil construction, the slurry pump can be set over mud pit on a frame or support bar. The pump inlet port is submerged in pit or tank to transfer drilling mud into the shaker. While in the oil drilling mud system, the slurry pump will be set on desilter tank or compartment. If we have 2 sets of the centrifuge, then 2 sets of slurry pump requested. For some users, they prefer the screw pump, since screw pump is a progressive pump. But the submersible slurry pump is more durable and high-resistance to sand or cuttings in the drilling fluids. Moreover, the bearing and connection part between the motor and pump body is above the liquid level, so there is no need to maintain the pump. Higher efficiency and lower cost.

The submersible slurry pump is another kind of centrifugal pump. But it's more durable and strong than a common pump. It can transfer many different kinds of hard materials, including sand, cement, particles, shale, and so on. So, it meets many requirements in different industries. The main structure including impeller, pump case, shaft, bearing, motor, supporting frame, and so on.
Handling capacity is from 30m3/h to 120m3/h. The pump performance including flow rate, heat, pressure. They will affect each other on the performance.

APYZ series slurry submersible pump specifications

How to select the submersible slurry pump

For pump feeding centrifuge, we need to consider the centrifuge flow rate. For pump feeding shaker in the HDD mud system, we should consider the whole mud system flow rate. And then the submersible length is another issue affect configuration or design. We can supply a pump meet submersible depth up to 3m. How to achieve this? By extension pipe connected to the input port.

Drilling fluids are transferred to desilter cones by a centrifugal pump from the desander tank or compartment. Desilter cone is fed by desilter pump with fluids out of desander. Under pump pressure, the fluids run into cones and flow with centrifugal force. Then the heavy particles will deposit down and pushed out of cone drop in Apex. Particles larger than 15 microns will be separated out of drilling mud.

APYZ Series slurry submersible pump's installation

The slurry pump operates directly in the slurry and requires no support structure, meaning it is flexible and easy to install. If possible, the sump should be equipped with sloping walls to allow the sediment to slide down to the area directly under the pump inlet. An agitator should be used when the liquid contains a high volume of solid content and when the density of the particles is high. A stand-alone or a side-mounted (submersible) mixer is an excellent option to re-suspend the solids, especially when the sump is large or lacks sloping walls. A mixer can also help the agitator when pumping very high-density particles. In applications where the sump volume is small and / or there is a wish to pump down to lower water levels in the sump, a slurry pump featuring an internal cooling system should be considered in order to avoid the stator overheating (when the water level gets low). A raft installation, which is a type of submersible installation, can be considered when pumping sediments from dams or lagoons. An agitator is recommended, as well as one or more mixers that can be mounted to the raft or to the pump in order to re-suspend particles so that particles can be successfully pumped.

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