Drilling Centrifugal Sand Pump: Structure, Principle & Application

In the solids control system of oil drilling equipment, the drilling centrifugal sand pump serves as a key supporting pump. It supplies drilling fluid with stable displacement and pressure to devices like desanders, desilters, and mixers in the oilfield drilling rig circulation solids control system, laying solid foundation for the efficient operation of these purification equipments and the continuous progress of drilling operations.

The drilling centrifugal sand pump mainly consists of inlet flange, pump casing, impeller, bearing seat, rotating shaft, and packing seal device. The drilling fluid sand pump produced by TR Solids Control adopts an axial suction structure design, with flow components made of wear-resistant cast iron. It can efficiently transport drilling fluid containing suspended particles and corrosive substances, making it an ideal supporting pump for desanders, desilters, and mixing funnels. Its stable operation ensures continuous supply and stable pressure of drilling fluid, facilitating the smooth operation of the entire solids control system.

Working Principle of Drilling Centrifugal Sand Pump

The operation of the drilling centrifugal sand pump mainly relies on motor drive, featuring simple and efficient overall process. The motor drives the sand pump rotating shaft through coupling, which in turn drives the impeller to rotate at high speed. Drilling fluid enters the impeller through the suction port, gains energy and speed along the impeller flow channel under centrifugal force, and is finally continuously discharged from the outlet through the pump casing. This realizes the stable transportation and cyclic supply of drilling fluid, meeting the operational requirements of solids control system equipment.

Structural Features of Drilling Centrifugal Sand Pump

1. Wear-Resistant Material for Long Service Life

   The pump body is made of high-wear-resistant material, the impeller is cast from high-chromium alloy, and the flow-through components are made of high-wear-resistant cast iron, comprehensively improving wear resistance. This enables the sand pump to handle drilling fluid containing abrasive substances such as sand particles, significantly extending its service life.

2. Excellent Sealing for Stable Operation

   It adopts composite sealing method dominated by mechanical seal and supplemented by packing seal. The dual sealing design effectively prevents drilling fluid leakage and adapts to stable operation under high-pressure working conditions.

3. Unique Impeller with Good Anti-Clogging Performance

   The impeller usually adopts an open design to meet the transportation needs of high-viscosity drilling fluid. Equipped with wide flow channel design, it has anti-clogging characteristics, effectively avoiding pump performance degradation caused by impurities in drilling fluid.

As an indispensable key equipment in the oilfield drilling rig circulation solids control system, the drilling centrifugal sand pump is mainly applied in the purification and circulation treatment of drilling fluid. During drilling operations, it pumps drilling fluid returned from the wellbore with large amount of sand particles and cuttings into cyclone desanders, desilters and other purification equipments at stable pressure and displacement. The treated drilling fluid can be reused, realizing the recycling of drilling fluid and the green and efficient progress of drilling operations.

TR Solids Control's drilling centrifugal sand pump, featuring solid and durable pump body, enables quick positioning and installation. It adapts to the solids control system requirements of different types of oilfield drilling rigs, is widely used in various oil drilling projects, and provides reliable equipment support for efficient drilling operations.