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Drilling Fluid Purification Systems – Tailor-made Production upon Request

Drilling fluid purification systems are critical components of drilling rigs, designed to treat returned drilling mud from the wellbore. As essential auxiliary equipment for drilling operations, these systems primarily include shale shakers, desanders, centrifuges, and degassers. The purification process involves five stages: screening, degassing, sand removal, silt elimination, and centrifugal separation.

Through multi-stage treatment, these systems maintain drilling fluid integrity, ensuring operational safety, efficiency, and environmental compliance in drilling operations.

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Drilling fluid purification system on a white background

Category

  • Shale shaker on a white background

    DFP-01-SS

  • Vacuum degasser on a white background

    DFP-02-VD

  • Desander on a white background

    DFP-03-DD

  • Desilter on a white background

    DFP-04-DT

  • Mud cleaner on a white background

    DFP-05-MC

  • Centrifuge on a white background

    DFP-06-CF

  • Cuttings dryer on a white background

    DFP-07-CD

Primary Treatment Equipment: Shale Shaker

Shale shaker on a white background DFP-01-SS

Primary Treatment Equipment: Shale Shaker

DFP-01-SS

The shale shaker primarily separates drill cuttings and solid particles from drilling fluid, ensuring fluid cleanliness and circulation efficiency. Operating on a high-frequency vibration mechanism, it employs multi-layered screen panels for graded filtration, effectively removing solid impurities of varying particle sizes. As the primary treatment equipment in drilling fluid purification systems, it targets solid particles larger than 76 μm Key features include:

  • Large screening area, high throughput capacity with superior separation efficiency.
  • Simplified structure with exceptional performance-to-size ratio.
  • Fully bonded rigid screen panels secured via clamp-type tensioning system, enabling quick installation and replacement.
  • Engineered mud trough weir design buffers fluid flow, minimizing direct impact on screens to extend service life.

Secondary Processing Equipment: Vacuum Degasser

Vacuum degasser on a white background DFP-02-VD

Secondary Processing Equipment: Vacuum Degasser

Vacuum degasser on a white background
DFP-02-VD

The vacuum degasser is specifically designed to remove hazardous gases (e.g., methane, hydrogen sulfide) from drilling fluids. Utilizing a negative pressure environment created by vacuum pumps, it separates and vents gases while retaining the liquid phase, hence also referred to as a negative pressure degasser.

As an essential solid control safety equipment, it mitigates blowout risks caused by gas influx and is widely deployed on both onshore and offshore drilling rigs. Key features include:

  • Self-priming system, no centrifugal pump required for fluid intake.
  • Corrosion-resistant construction minimizes maintenance frequency and repair costs.
  • Compact design with a small footprint.
  • It also serves as a high-torque mud agitator during operations.
  • Customizable configurations upon request.

Tertiary Treatment Equipment: Desander

Desander on a white background DFP-03-DD

Tertiary Treatment Equipment: Desander

Desander on a white background
DFP-03-DD

The desander serves as the third-stage solids control purification equipment in drilling operations, specifically designed to separate solid particles ranging from 44–74 μm (those unremoved by shale shakers) in drilling fluids. Comprising a shale shaker, desander hydrocyclones, flow distribution manifolds, and electric control systems, it is typically configured with 8", 10", or 12" hydrocyclone clusters. The desander features high processing capacity, superior separation efficiency, and operational stability, effectively reducing fluid solids content, minimizing equipment wear, and mitigating drilling risks. It is suitable for onshore and offshore drilling operations. Key features include:

  • Durable hydrocyclones, constructed from polyurethane or high-chrome cast iron for extended service life.
  • Clamp-type assembly, easy maintenance.
  • Compact design with a small footprint.
  • Flexible selection of 1, 2, or 3 hydrocyclones (8"/10"/12") to match flow rate requirements.
  • Rapid deployment, fast installation and system integration.

Quaternary Treatment equipment: Desilter

Desilter on a white background DFP-04-DT

Quaternary Treatment equipment: Desilter

Desilter on a white background
DFP-04-DT

The desilter functions as the fourth-stage solids control equipment in drilling operations, typically employing 4" or 5" hydrocyclone clusters to remove fine solid particles sized 15–44 μm (those unremoved by shale shakers and desanders). It consists of a shale shaker, hydrocyclones, flow distribution manifolds, and electrical control systems. Key features include:

  • Ultra-durable hydrocyclones, Fabricated from high-wear-resistant polyurethane for extended operational life.
  • Clamp-type connections, simplified installation and disassembly.
  • Compact design with a small footprint for enhanced portability.
  • Flexible deployment of 1, 2, or 3 hydrocyclones (4"/5") to accommodate varying flow rates.
  • Adjustable hydrocyclone size and quantity to better meet client-specific operational demands.

Mud Cleaner (Integrated Desander & Desilter System)

Mud cleaner on a white background DFP-05-MC

Mud Cleaner (Integrated Desander & Desilter System)

Mud cleaner on a white background
DFP-05-MC

The mud cleaner functions as a tertiary and quaternary solids control equipment for drilling fluid treatment, combining desander hydrocyclones, desilter hydrocyclones, and a shale shaker into a single integrated unit. Its compact footprint, space efficiency, and multifunctional design make it an optimal solution for secondary-to-tertiary solids control in drilling operations. Key features include:

  • Heat-treated shaker basket, engineered for extended periods under high excitation intensity.
  • Mechanically adjustable shaker angle, convenient and reliable.
  • Sandblasted finish with anti-corrosion, abrasion-resistant coatings. Better appearance, higher quality.
  • Dual screen tensioning options, hook-strip or wedge-block tensioning systems for compatibility with diverse screen types.
  • Global motor compatibility, supporting industry-leading vibration motors.
  • The desander/desilter hydrocyclones are constructed from high-wear-resistant composite polyurethane, ensuring interchangeability with international OEM components.

Fifth-stage Treatment Equipment: Centrifuge

Centrifuge on a white background DFP-06-CF

Fifth-stage Treatment Equipment: Centrifuge

Centrifuge on a white background
DFP-06-CF

Centrifuges are used to recover barite, remove 2–7 μm fine solid particles, control the density and viscosity of the drilling fluid, and ensure the performance of the drilling fluid.

Centrifuges are categorized by rotational speed into medium-speed centrifuges, high-speed centrifuges, and variable-frequency high-speed centrifuges. These units are critical for barite recovery, removal of fine solids (2–7 μm), and precise control of drilling fluid density and viscosity to maintain optimal fluid performance. Key features include:

  • The drum and propeller parts are made of high-quality 304 or 316 stainless steel, ensuring high quality and long service life.
  • The slag discharge port of the drum is equipped with a hard alloy sleeve or ceramic inlay, making the discharge port more wear-resistant.
  • The slag discharge surface of the screw propeller is spray-welded with a tungsten carbide wear-resistant layer, making it more durable.
  • The bearings are branded products of top quality and are trustworthy.
  • The electrical components are from international brands.
  • Large processing capacity, suitable for most drilling fluids.
  • Easy to install and operate.

Cuttings Dryer (Eco-Specialized)

Cuttings dryer on a white background DFP-07-CD

Cuttings Dryer (Eco-Specialized)

Cuttings dryer on a white background
DFP-07-CD

For environmentally sensitive areas, the system can be equipped with cuttings recovery and waste fluid treatment modules. The cuttings dryer is a single-stage, continuously operational vertical scraper-discharge centrifuge. The ZCVCD Series vertical cuttings dryer efficiently recovers oil content from drill cuttings, with a processing capacity of 30–50 tons/hour, achieving Oil-on-Cuttings (OOC) content < 5% post-treatment. Key features include:

  • Compact design;
  • Efficient operation;
  • Stable and reliable performance;
  • Easy to use and maintain;
  • Power components are from high-quality well-known brands;
  • Easily customizable for users.

Specifications

Table 1: Shale Shaker Specifications
Model ZCZS/TR ZCZS/T ZCZS/Z703-1 ZCZS/Z703-2 ZCZS/Z585-1
Vibration trajectory Elliptical Elliptical Linear Linear ( Double layer ) Linear
Processing capacity (m3/h) 100 100 120 120 160
Number of motors × Power (kW) 1 × 0.75 1 × 0.75 2 × 1.8 2 × 1.8 2 × 1.8
Vibration intensity (g) ≤ 6 ≤ 6 ≤ 7.2 ≤ 7.2 ≤ 8
Screen mesh specifications (mm) 600 × 1120 585 × 116 700 × 1050 700 × 1050 585 × 1165
Screen mesh quantity 1 (soft) 1 3 6 4
Screen box angle N N -3° to +3° -3° to +3° -3° to +3°
Theoretical weight (kg) 235 255 1780 1840 1650
Overall dimensions (mm) 1500 × 1200 × 900 1500 × 1200 × 900 2860 × 1750 × 1450 2860 × 1750 × 1450 2970 × 1750 × 1380
Table 2: Vacuum Degasser Specifications
Model ZCZCQ/L240 ZCZCQ/L270 ZCZCQ/L300 ZCZCQ/L360
Processing capacity (m³/h) 240 270 300 360
Main motor power (kW) 15 22 30 37
Vacuum pump motor power (kW) 2.2 3 4 5.5
Impeller speed (rpm) 870 870 870 870
Vacuum degree (mmHg) 400–500 400–500 450–650 450–650
Liquid discharge method Centrifugal (L)
Degassing rate (η) > 95%
Mud density (g/m³) < 2.5
Theoretical weight (kg) 1300 1550 1700 1950
Overall dimensions (mm) 1750 × 900 × 1500 2000 × 1000 × 1670 2250 × 1200 × 1700 2400 × 1500 × 1850
Table 3: Desander Specifications
Model ZCQJ/200×1/2 ZCQJ/250×1/2/3 ZCQJ/300×1/2
Cyclone nominal diameter (mm) 200 250 300
Number of cyclones (units) 1 / 2 1 / 2 / 3 1 / 2
Operating pressure (MPa) 0.2–0.45
Separation particle size (μm) 44–74
Processing capacity (m3/h) ≤ 60 / 120 ≤ 100 / 200 / 300 ≤ 120 / 240
Applicable shale shaker ZCZS/TR
ZCZS/T
Inlet pipe diameter (mm) 125 / 150 150 200
Outlet pipe diameter (mm) 150 / 200 200 250
Supporting sand pump (kW) 45 / 55 45 / 55 / 55 55 / 75
Theoretical weight (kg) 880 / 920 1160 / 1205 / 1250 1520 / 1571 / 1622
Overall dimensions (mm) 1500 × 1160 × 2000 1800 × 1500 × 2200 1800 × 1650 × 2400
Table 4: Desilter Specifications
Model ZCQJ/100×4 ZCQJ/100×8 ZCQJ/100×12 ZCQJ/100×16
Cyclone nominal diameter (mm) 100
Number of cyclones (units) 4 8 12 16
Operating pressure (MPa) 0.2–0.45
Separation particle size (μm) 15–44
Processing capacity (m3/h) ≤ 60 ≤ 120 ≤ 180 ≤ 240
Applicable shale shaker ZCZS/TR
ZCZS/T
Inlet pipe diameter (mm) 100 125 150 150
Outlet pipe diameter (mm) 125 150 200 200
Supporting sand pump (kW) 45 55 55 75
Theoretical weight (kg) 600 700 1250 1950
Overall dimensions (mm) 1500 × 1150 × 2000 1500 × 1150 × 2200 1800 × 1650 × 2400 2800 × 1780 × 2400
Table 5: Mud Cleaner Specifications
Model ZCQJ/200×2-100×8 ZCQJ/250×2-100×12 ZCQJ/250×3-100×20
Cyclone CS/200×2 CN/100×8 CS/250×2 CN/100×12 CS/250×3 CN/100×20
Operating pressure (MPa) 0.2–0.45
Separation particle size (μm) 15–74
Processing capacity (m3/h) ≤ 120 ≤ 240 ≤ 320
Applicable shale shaker ZCZSZ703-1 ZCZSZ703-1 ZCZS/Z585-1
Inlet pipe diameter (mm) 125 125 150 150 200 200
Outlet pipe diameter (mm) 150 150 200 200 250 250
Supporting sand pump (kW) 55 / 55 55 / 55 55 / 75
Theoretical weight (kg) 1150 1350 2450
Overall dimensions (mm) 1850 × 1350 × 1850 1850 × 1350 × 1850 2450 × 2150 × 2150
Table 6: Centrifuge Specifications
Model ZCLW366×1257-N(VFD) ZCLW450×842-N ZCLW450×1000-N(VFD) ZCLW600×1020-N
Drum large end inner diameter (mm) 366 450 450 600
Drum working length (mm) 1257 842 1000 1020
Drum speed (rpm) ≤ 3200 1800 ≤ 2800 1600
Separation factor ≤ 2090 g 816 g ≤ 1975 g 860 g
Separation particle size (μm) 2–5 6–9 4–6 6–9
Throughput (m³/h) ≤ 35 ≤ 40 ≤ 50 ≤ 60
Main motor power (kW) 30 22 30 55
Auxiliary motor power (kW) 7.5 5.5 7.5 11
Drive mode Electric drive or variable frequency Electric drive Electric drive or variable frequency Electric drive
Feed pump power (kW) 7.5 4 5.5 7.5
Theoretical weight (kg) 3100 2200 2980 3350
Overall dimensions (mm) 2900 × 1500 × 1650 26000 × 1450 × 1350 2600 × 1450 × 1350 2900 × 1600 × 1700
Table 7: Cuttings Dryer Specifications
Model ZCVCD930 ZCVCD930VFD
Screen basket nominal diameter (mm) 930
Screen basket slot (mm) 0.25–0.5
Screen basket speed (rpm) 900 0–900
Pulse air wash pressure (MPa) 0.69–0.8
Air volume (m³/min) > 17
Lubricating oil tank volume (L) 60
Lubricating oil pump power (kW) 0.55
Main motor power (kW) 55
Processing capacity (t/h) 30–50
Oil content after drill cuttings treatment (OOC) ≤ 5%
Theoretical weight (kg) 5700 5750
Overall dimensions (mm) 2750 × 2150 × 1800

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