Desander & Desilter

Product Specifications

Technical details and manufacturing context for Desander & Desilter

Definition

The Desander & Desilter is a component within the Mud Circulation System of drilling operations. Its primary function is to sequentially remove abrasive solids, specifically sand and silt, from the drilling fluid. By doing so, it maintains the fluid's viscosity, density, and lubrication properties, which are critical for efficient drilling. The removal of these solids also protects downstream equipment, such as pumps and mud motors, from excessive wear, thereby reducing maintenance costs and downtime. The unit operates using hydrocyclone technology: pressurized mud enters tangentially, creating a vortex that separates heavier solids via centrifugal force. The separated solids discharge from the bottom apex, while the cleaned fluid exits from the top overflow. The equipment is typically configured with multiple hydrocyclones to achieve the desired processing capacity. Key parameters include a processing capacity of 120–240 m³/h, operating pressure of 0.25–0.4 MPa, and separation particle size of 15–45 μm, with a separation efficiency of ≥90% for particles above that size. The working temperature range is -20–80°C, and motor power is 5.5–15 kW. Electrical specifications include voltage of 380–460 V AC (IEC 60038) and frequency of 50–60 Hz. The ingress protection rating is IP54–IP55 (IEC 60529). The body material is Q235B carbon steel (GB/T 700), with polyurethane hydrocyclone liners. The unit weighs 1500–3500 kg and has dimensions ranging from 2500×1200×1800 mm to 3500×1500×2200 mm. Materials used include abrasion-resistant steel, polyurethane liners, and ceramic apex valves. These values are reference ranges and must be verified with the legal manufacturer for specific models and applications. Standards listed are for procurement verification only and do not imply certification.

Working Principle

The Desander & Desilter operates on the principle of hydrocyclone separation. Pressurized drilling mud is introduced tangentially into a conical hydrocyclone, creating a high-velocity vortex. Centrifugal force causes denser solid particles, such as sand and silt, to move outward and downward along the cone wall, exiting through the bottom apex. The cleaned fluid, being lighter, moves inward and upward, exiting through the top overflow. The separation efficiency depends on the particle size, with the desander removing particles in the 45–74 μm range and the desilter removing 15–44 μm particles. The operating pressure must be maintained within 0.25–0.4 MPa; below 0.25 MPa, efficiency drops sharply. The unit's design ensures continuous operation, with solids discharged periodically or continuously depending on the configuration.

Common Materials

Abrasion-resistant steel, Polyurethane liners, Ceramic apex valves

Technical Parameters

Parameter	Typical range	Notes & selection driver
Processing Capacity	120–240 m³/h	Matches mud circulation rate; higher capacity requires larger unit.
Operating Pressure	0.25–0.4 MPa	Below 0.25 MPa separation efficiency drops sharply.
Separation Particle Size	15–45 μm	Desander removes 45–74 μm; desilter removes 15–44 μm.
Separation Efficiency	≥90 %	For particles above the separation size.
Working Temperature	-20–80 °C	Outside range may affect rubber seals and hydrocyclone liners.
Motor Power	5.5–15 kW	Depends on pump and agitator requirements.
Voltage	380–460 V AC	Three-phase; other voltages available on request.IEC 60038
Frequency	50–60 Hz	Must match motor rating.
Ingress Protection	IP54–IP55	For outdoor installation; higher IP for harsh environments.IEC 60529
Body Material	Q235B	Carbon steel; stainless steel optional for corrosive mud.GB/T 700
Hydrocyclone Liner Material	PU	Polyurethane; wear-resistant for abrasive slurries.
Weight	1500–3500 kg	Includes skid and piping; affects transport and installation.
Dimensions (L×W×H)	2500×1200×1800–3500×1500×2200 mm	Footprint varies with capacity and configuration.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Hydrocyclone Cone
Creates centrifugal vortex for solid-liquid separation

Material: Abrasion-resistant steel with polyurethane lining
Inlet Head Part
Directs pressurized mud tangentially into cone

Material: Cast steel
Apex Valve
Controls underflow discharge of separated solids

Material: Ceramic or tungsten carbide
Overflow Discharge Part
Outlet for cleaned drilling fluid

Material: Steel piping

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Mud Circulation System

View system integration details

Manufacturers of Desander & Desilter

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Xi'an Brightway Energy Machinery Equipment Co., Ltd.

Shaanxi, CN

Founded 2012

API ISO CE IADC

Also makes: Mud Circulation System, Motor Control Center, Mud System and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Frequently Asked Questions

What is the difference between a desander and a desilter?

A desander is designed to remove larger particles, typically in the 45–74 μm range, while a desilter removes finer particles in the 15–44 μm range. They are often used in series within the mud circulation system to achieve the desired solids removal.

What happens if the operating pressure drops below 0.25 MPa?

Below 0.25 MPa, the separation efficiency drops sharply because the centrifugal force is insufficient to effectively separate solids from the fluid. It is essential to maintain the recommended pressure range of 0.25–0.4 MPa for optimal performance.

What materials are used in the construction of this equipment?

The equipment typically uses abrasion-resistant steel for the body, polyurethane liners for the hydrocyclones, and ceramic apex valves. The body material is often Q235B carbon steel, but stainless steel may be optional for corrosive mud applications.

How do I verify the specifications for a specific model?

The parameters listed are reference ranges. You must contact the legal manufacturer or supplier to confirm the exact specifications for the model you intend to use, including processing capacity, dimensions, and compliance with standards.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 0.35 MPa (50 psi) inlet pressure
flow rate:	10 to 500 m³/h (44 to 2200 gpm) per hydrocyclone
temperature:	0°C to 80°C (32°F to 176°F)
slurry concentration:	Up to 25% solids by volume

Product Specifications

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