Description
Drilling Mud Agitator for Oilfield Mud Tanks & Solids Control Systems
SGPE manufactures Drilling Mud Agitators for continuous drilling fluid circulation, mud mixing and barite or weighting-material suspension in oil and gas drilling systems. Installed on active tanks, suction tanks, reserve tanks, mixing tanks and weighted-mud compartments, the equipment keeps drilling fluid moving while reducing settlement and density stratification.
Our configurable range covers 3–22 kW motor power, low-speed high-torque drives, 60 and 72 rpm common nominal output speeds, 20:1 and 25:1 reduction ratios, approximately 600–1200 mm impellers, single- and dual-impeller arrangements and tank-specific shaft lengths.
The agitators handle water-based mud (WBM), oil-based mud (OBM), synthetic-based mud (SBM), weighted mud and high-density drilling fluids. Typical installations include land rigs, offshore platforms, jack-up rigs, semi-submersibles, drillships and workover units. They also support surface mud systems for directional wells, horizontal wells, extended-reach drilling, deep wells and HPHT programs.
SGPE supplies standalone units, new mud tank packages, custom configurations, dimensionally matched replacement agitators, explosion-proof motor options, spare parts and multi-unit project orders.
Email: info@sgpe.com
Tel/Whatsapp: +86 186-1599-5239
Product Overview
A Drilling Mud Agitator provides continuous mechanical circulation inside an oilfield mud tank. The same equipment is also commonly called a Mud Agitator, Mud Tank Agitator, Drilling Fluid Agitator, Oilfield Mud Agitator, Mud Pit Agitator or Drilling Mud Mixer.
The main assembly consists of an electric motor, reduction gearbox, mounting base, vertical shaft and submerged impeller. The motor provides rotational power. The gearbox lowers the speed and increases torque, while the shaft transfers that torque to the impeller.
As the impeller rotates, it generates axial and radial flow. This circulation moves drilling fluid through different levels of the compartment and keeps barite, weighting agents, treatment chemicals and other required fluid components distributed.
Stable tank circulation helps limit heavy deposits on the tank floor and supports more consistent mud density and rheology before the fluid reaches the pump suction.
A mud agitator does not remove unwanted drilled solids. Shale shakers, desanders, desilters, mud cleaners and centrifuges perform solids separation. The agitator supports those treatment stages by keeping the usable drilling fluid circulating inside the tank.
For that reason, agitator selection starts with the tank dimensions, working volume, operating mud level, maximum mud density, fluid rheology, required turnover, impeller diameter, shaft length, gearbox ratio and rig electrical specification.
Drilling Mud Agitator Technical Specifications
| Parameter | SGPE Configurable Range |
|---|---|
| Product | Drilling Mud Agitator |
| Related Terms | Mud Agitator / Mud Tank Agitator / Drilling Fluid Agitator / Oilfield Mud Agitator / Drilling Mud Mixer |
| Manufacturer | SGPE |
| Industry | Oil and gas drilling |
| Main Function | Drilling fluid circulation, mixing and barite/weighting-material suspension |
| Installation | Top-mounted on mud tank |
| Shaft Arrangement | Vertical submerged shaft |
| Motor Power | 3–22 kW |
| Approx. Motor Range | 4–30 HP |
| Common Motor Powers | 3 / 5.5 / 7.5 / 11 / 15 / 18.5 / 22 kW |
| Common Nominal Output Speed | 60 / 72 rpm |
| Reduction Ratio | 20:1 / 25:1 |
| Gearbox Type | Helical-bevel / worm gear |
| Drive Arrangement | Direct-mounted / coupling-driven |
| Drive Layout | Horizontal / vertical gearbox arrangement |
| Impeller Diameter | Approx. 600–1200 mm |
| Impeller Configuration | Single / dual |
| Impeller Blade | Flat/Straight-Blade or Canted-Blade |
| Shaft Length | Customized to tank depth |
| Shaft Stabilizer | Available for long-shaft arrangements |
| Motor Type | Oilfield-duty / explosion-proof |
| Electrical Phase | Three-phase |
| Frequency | 50 / 60 Hz |
| Common 50 Hz Voltage | 380 / 400 / 415 V |
| Common 60 Hz Voltage | 440 / 460 / 480 V |
| Other Voltage | Customized to rig electrical system |
| Drilling Fluid | WBM / OBM / SBM |
| Weighted Mud | Supported |
| High-Density Mud | Supported |
| Mounting Base | Customized |
| Bolt Pattern | New-build / replacement configuration |
| IECEx Motor Option | Available |
| ATEX Motor Option | Available |
| Coating | Oilfield industrial coating |
| Replacement Matching | Available |
| Spare Parts | Motor, gearbox, shaft, impeller, coupling, bearings and mounting components |
| Documentation | Datasheet, GA drawing, motor/gearbox data, O&M and inspection documents |
| Third-Party Inspection | Project inspection support available |
| Customization | Mechanical, electrical and installation configuration |
The final motor, gearbox, shaft and impeller combination follows the actual mud tank and drilling fluid. We confirm the selected configuration on the project datasheet and dimensional drawing rather than sizing the equipment from motor power alone.
Motor Power and Impeller Selection
The following combinations provide a practical starting point for equipment selection and preliminary budget quotations.
| Motor Power | Approx. HP | Typical Industry Impeller Range | Typical Duty |
|---|---|---|---|
| 3 kW | 4 HP | 600–700 mm | Small compartments and auxiliary tanks |
| 5.5 kW | 7.5 HP | 600–850 mm | Standard mud tank circulation |
| 7.5 kW | 10 HP | 650–950 mm | Active and reserve tanks |
| 11 kW | 15 HP | 800–1050 mm | Main active tanks and weighted mud |
| 15 kW | 20 HP | 900–1100 mm | Large compartments and high-density mud |
| 18.5 kW | 25 HP | 950–1200 mm | Heavy-duty or dual-impeller service |
| 22 kW | 30 HP | 1000–1200 mm | Large-volume and high-load mud systems |
Motor power alone does not determine agitation performance.
Two tanks can use the same 11 kW or 15 kW motor yet require different impeller diameters, shaft lengths or gearbox arrangements. Higher mud density and demanding rheology also increase the torque requirement.
We therefore select the motor, reducer, shaft and impeller as one system.
This approach gives buyers a better basis when comparing an 11 kW Mud Agitator, 15 kW Mud Agitator or 20 HP Drilling Mud Mixer for a new installation, rig upgrade or replacement project.
How a Drilling Mud Agitator Works
A standard electric motor operates much faster than a drilling mud impeller should turn. The reduction gearbox lowers the motor speed and increases the torque available at the shaft.
The vertical shaft transfers this low-speed, high-torque output to the submerged impeller.
As the impeller rotates, it moves drilling fluid throughout the tank compartment. The resulting flow distributes barite, weighting materials and treatment chemicals while reducing poorly circulated areas around tank corners, dividers, suction piping and structural members.
Effective agitation supports stable mud density, rheology and additive distribution. It also reduces heavy bottom deposits and maintains a more uniform fluid condition near the mud pump suction.
The objective is not simply to create visible movement at the surface. A correctly sized Drilling Fluid Agitator should produce useful circulation throughout the working mud volume.
Engineering Sizing: Tank Turnover and Impeller Position
Tank turnover provides a useful engineering basis for agitator sizing.
Turnover rate describes the time required for the impeller to move a fluid volume equal to the working volume of the tank compartment.
A practical calculation is:
Turnover Rate, TOR (sec) = Tank Working Volume ÷ Impeller Pumping Rate × 60
Tank volume and pumping rate should use compatible volume units, with the impeller pumping rate expressed per minute.
Impeller pumping rate depends on impeller diameter, blade geometry, operating speed and drilling fluid properties.
| Tank Duty | Typical Engineering Turnover Time | Main Objective |
|---|---|---|
| Active / Solids-Control Section | 50–75 sec | Maintain circulation during mud treatment |
| Material Addition / Mixing Section | 50–75 sec | Distribute newly added materials |
| Suction Section | 65–85 sec | Maintain uniform mud before pump suction |
| Reserve Tank | 50–80 sec | Reduce settlement during storage |
| Pill / Specialty Fluid Tank | 40–65 sec | Maintain smaller specialty fluid volumes |
These values serve as engineering references rather than fixed performance guarantees. High mud density, unusual rheology, internal structures and restricted impeller clearance change the final sizing requirement.
Impeller Position and Tank Geometry
Impeller position affects how well the agitator moves drilling fluid through the lower part of the tank.
If the impeller sits too high, bottom circulation weakens. If it sits too close to the tank floor, divider or wall, the surrounding structure restricts flow.
For canted-blade designs, approximately 0.75 × impeller diameter above the tank bottom provides a useful initial installation reference. We then adjust the final position to the actual tank geometry.
| Installation Factor | Engineering Consideration |
|---|---|
| Impeller-to-Bottom Position | Approx. 0.75 × impeller diameter as an initial reference |
| Working Mud Level | Maintains adequate impeller submergence |
| Shaft Length | Matches tank depth and mounting elevation |
| Wall Clearance | Allows effective fluid circulation |
| Divider Clearance | Prevents interference with tank structure |
| Suction Line Clearance | Protects piping and pump-suction flow |
| Mud Gun Position | Coordinates jet and mechanical circulation |
| Internal Pipework | Maintains safe rotating clearance |
| Access Hatch | Preserves maintenance access |
| Long Shaft | Uses additional stabilization where required |
For a new installation, we review the general arrangement drawing before finalizing shaft length, impeller diameter and operating elevation.
For a replacement unit, field dimensions, nameplate information and clear equipment photographs usually provide the main data needed to establish the existing installation interface.
Gearbox, Drive, Impeller and Shaft Configurations
Different rigs use different mud tank layouts, available deck space and maintenance practices. The drive arrangement therefore needs to suit the actual installation rather than follow one standard layout.
| Configuration | Main Characteristic | Typical Application |
|---|---|---|
| Helical-Bevel Gearbox | Compact and efficient torque transmission | Continuous-duty active tanks |
| Worm Gear Reducer | Straightforward low-speed drive | Standard tanks and replacement projects |
| Horizontal Drive | Conventional tank-top arrangement | Existing rigs and general installations |
| Vertical Drive | Compact footprint | Offshore modules and restricted spaces |
| Direct-Mounted Drive | Fewer external drive components | New-build systems |
| Coupling-Driven Drive | Flexible mechanical interface | Retrofit and replacement projects |
A helical-bevel Mud Agitator combines efficient torque transmission with a compact drive arrangement. It works well on active mud tanks, offshore mud modules and installations where tank-top space is limited.
A worm gear Mud Agitator uses a simple low-speed reduction arrangement and remains suitable for many conventional mud tank and replacement applications.
Horizontal and vertical configurations normally describe the orientation of the motor and gearbox package rather than the submerged shaft. Horizontal layouts fit many existing tanks, while vertical drives reduce the required deck footprint.
We select the final arrangement according to torque demand, installation space, service access and replacement compatibility.
Single and Dual Impeller Configurations
A single impeller suits many standard-depth mud tanks. A dual-impeller arrangement places two impellers at different elevations and improves circulation through deeper compartments.
| Configuration | Main Purpose | Typical Application |
|---|---|---|
| Single Impeller | General tank circulation | Active, suction and reserve tanks |
| Dual Impeller | Stronger vertical circulation | Deep tanks and high-density mud |
| Standard Shaft | Conventional tank depth | General mud systems |
| Long Shaft | Reaches deeper fluid zones | Large compartments |
| Long Shaft + Stabilizer | Controls shaft movement | Deep and offshore tanks |
| Custom Impeller Elevation | Matches existing tank geometry | Retrofit and replacement projects |
Impeller diameter, blade shape and operating elevation all affect fluid movement.
A larger impeller can increase pumping capacity, but it also raises torque demand. For this reason, we size the impeller together with the motor and gearbox.
Our configurable range covers approximately 600–1200 mm impeller diameters.
Flat or straight blades provide strong radial flow. Canted blades increase axial circulation and help move drilling fluid through different elevations of the tank.
Shaft length follows the actual tank depth and operating mud level. Deep tanks can use longer shafts, dual impellers and additional shaft stabilization.
Drilling Fluid Compatibility
The agitator can be configured for the principal drilling fluid systems used in oil and gas well construction.
| Drilling Fluid | Main Agitation Requirement | Typical Application |
|---|---|---|
| Water-Based Mud (WBM) | Keep clay, additives and weighting materials distributed | Land and offshore drilling |
| Oil-Based Mud (OBM) | Maintain uniform liquid and solid phases | Directional, deep and offshore wells |
| Synthetic-Based Mud (SBM) | Maintain homogeneity during circulation and storage | Offshore and deepwater drilling |
| Weighted Mud | Reduce barite settlement | Deep and higher-pressure wells |
| High-Density Mud | Provide sufficient torque and circulation | HPHT and demanding drilling programs |
| Reserve Mud | Reduce settlement during storage | Active and reserve systems |
| Treated Mud | Maintain properties after conditioning | Treatment compartments |
| High-Density Kill Mud | Maintain weighting materials before use | Surface well-control fluid preparation |
| Pill / Slug Fluid | Maintain specialty fluid mixtures | Pill and slug tanks |
WBM, OBM and SBM Applications
A Mud Agitator for WBM maintains circulation of clay, barite and treatment chemicals throughout active and reserve tanks.
OBM and SBM systems also require stable circulation during treatment and storage. This becomes particularly important on offshore, directional, extended-reach and deepwater wells where maintaining uniform drilling-fluid properties is critical.
Weighted mud creates a higher mechanical load because barite increases both settlement tendency and impeller torque.
For a high-density mud agitator, maximum mud density becomes a core sizing input. We select the motor, gearbox, shaft and impeller together rather than simply increasing motor power.
Oilfield Mud Tank and Rig Applications
Mud agitators serve different tank duties throughout the surface drilling fluid system.
| Application | Typical Mud Service | Main Selection Focus |
|---|---|---|
| Active Mud Tank | Circulating drilling fluid | Continuous duty and turnover |
| Suction Tank | Mud before drilling pumps | Stable density and circulation |
| Reserve Mud Tank | Stored drilling fluid | Settlement control |
| Mixing Tank | Newly treated drilling fluid | Rapid additive distribution |
| Weighted Mud Tank | Barite-weighted fluid | Torque and mud density |
| Kill Mud Tank | High-density well-control fluid | Heavy-duty agitation |
| Pill / Slug Tank | Specialty fluid | Smaller-volume turnover |
| Land Drilling Rig | WBM / OBM / weighted mud | Reliable continuous operation |
| Offshore Platform | Active and reserve mud | Hazardous-area electrical system |
| Jack-Up Rig | WBM / OBM / SBM | Explosion-proof motor configuration |
| Semi-Submersible | Deepwater drilling fluid | Compact continuous-duty arrangement |
| Drillship | Active, reserve and specialty tanks | Offshore electrical configuration |
| Workover Rig | Conditioned and weighted fluids | Compact installation |
| Directional / Horizontal Well | Controlled mud density and rheology | Stable surface mud properties |
| Extended-Reach Well | Often weighted OBM/SBM | Continuous surface circulation |
| Deep / HPHT Well | High-density drilling fluid | Higher torque and careful sizing |
Land and Workover Rigs
Land drilling rigs use agitators in active, suction, reserve, weighted and mixing tanks.
These systems support conventional wells as well as horizontal well drilling, directional drilling and extended-reach wells. As mud weight increases, gearbox torque, impeller size and turnover become increasingly important.
Workover units also use tank agitation for active fluid systems, reserve storage, weighted-fluid preparation and pill tanks.
Offshore Drilling
Offshore rigs require reliable continuous operation, compact layouts and electrical equipment suited to the specified hazardous area.
SGPE supplies Offshore Mud Agitators for fixed platforms, jack-up rigs, semi-submersibles, drillships and offshore workover units.
Available configurations include 50/60 Hz motors, explosion-proof motor options, compact drive arrangements, custom shafts and project-specific coatings.
Directional, Extended-Reach, Deep and HPHT Wells
Directional, horizontal and extended-reach wells place additional demands on drilling fluid density and rheology. Long well sections also increase the importance of stable surface mud conditioning.
The agitator maintains tank circulation while shale shakers, hydrocyclones and centrifuges remove unwanted drilled solids.
Deep and HPHT programs often use weighted or high-density drilling fluids. We size these heavy-duty applications from maximum mud density, rheology, tank geometry and required turnover.
Role in an Oilfield Solids Control System
A Mud Agitator works alongside the solids control equipment rather than replacing it.
| Equipment | Main Function |
|---|---|
| Drilling Shale Shaker | Removes large drilled solids |
| Drilling Mud Vacuum Degasser | Removes entrained gas |
| Drilling Mud Desander | Removes sand-size solids |
| Drilling Mud Desilter | Provides fine hydrocyclone separation |
| Drilling Mud Cleaner | Combines hydrocyclone and fine-screen treatment |
| Drilling Mud Decanter Centrifuge | Controls fine solids and mud density |
| Drilling Mud Agitator | Maintains tank circulation and weighting-material suspension |
| Mud Gun | Sweeps local tank-bottom areas |
| Mud Mixing Hopper | Adds drilling fluid materials |
| Centrifugal Pump | Transfers mud and feeds treatment equipment |
A typical surface mud system includes the flowline, primary solids removal, degassing or hydrocyclone treatment, fine-solids control, active tanks and drilling mud pumps. The exact sequence follows the rig layout and mud program.
Throughout the system, the agitator keeps the required drilling-fluid components distributed while the solids control equipment removes unwanted drilled solids.
Mud Agitator vs. Mud Gun vs. Jet Mud Mixer
These three types of mud equipment perform different jobs.
| Equipment | Operating Principle | Main Function | Typical Use |
|---|---|---|---|
| Mud Agitator | Mechanical rotating impeller | General tank circulation | Continuous agitation |
| Mud Gun | High-velocity fluid jet | Local tank sweeping | Corners and low-flow areas |
| Jet Mud Mixer / Mixing Hopper | Venturi and pump circulation | Adds and disperses materials | Barite, bentonite and treatment chemicals |
The agitator maintains overall tank circulation. A mud gun targets local areas where deposits tend to form, while a jet mud mixer or mixing hopper introduces new drilling fluid materials.
Many complete mud systems use all three because their functions complement each other.
Drilling Mud Agitator Price and Quotation Factors
Buyers comparing a Drilling Mud Agitator price, Mud Agitator quotation, Mud Tank Agitator for sale or Oilfield Mud Agitator supplier should compare the complete technical configuration rather than motor power alone.
| Price Factor | Effect on Quotation |
|---|---|
| Motor Power | Determines the basic drive package |
| Gearbox Type | Helical-bevel and worm gear arrangements differ |
| Shaft Length | Longer shafts increase material and support requirements |
| Impeller Diameter | Changes material use and mechanical load |
| Number of Impellers | Dual impellers increase supply scope |
| Explosion-Proof Motor | Hazardous-area requirements change motor selection |
| IECEx / ATEX Motor | Changes electrical package requirements |
| Voltage / Frequency | Special power systems affect motor selection |
| Mounting Base | Replacement interfaces require dimensional matching |
| Coating | Offshore or project coating changes supply scope |
| Spare Parts | Adds maintenance components |
| Third-Party Inspection | Adds inspection and coordination work |
| Documentation | Additional ITP/MDR requirements increase project scope |
| Quantity | Influences production planning for multi-unit orders |
| Packing | Sea, air and export packing requirements differ |
A useful commercial quotation therefore starts with an agreed technical configuration.
SGPE supports single-unit enquiries, custom configurations, dimensionally matched replacements, bulk Mud Agitator orders, new mud tank packages, rig retrofit programs and complete solids control projects.
Why Choose SGPE as Your Drilling Mud Agitator Manufacturer?
SGPE is a petroleum equipment manufacturer and project supplier with more than 20 years of oilfield equipment experience.
Our manufacturing base in Jiangsu covers approximately 20,000 m², with more than 100 employees, over 25 technical professionals and more than 100 sets of machining and processing equipment.
For buyers looking for a Drilling Mud Agitator manufacturer in China or Mud Tank Agitator supplier, we provide direct technical communication for sizing, dimensional drawings, replacement matching, manufacturing coordination, inspection documentation, packing and project supply.
We work with drilling contractors, rig operators, oilfield service companies, EPC contractors, equipment distributors, solids control integrators and maintenance companies.
Direct communication is especially valuable for retrofit and replacement work. Buyers can discuss tank dimensions, mud density, electrical requirements and mounting interfaces directly with our technical team.
SGPE also supplies drilling mud tanks, shale shakers, vacuum degassers, desanders, desilters, mud cleaners, centrifuges, pumps and related drilling fluid equipment. Customers can source a standalone agitator or combine it with a larger solids control package.
Custom Mud Agitator and Replacement Supply
We manufacture custom Drilling Mud Agitators for new tanks, OEM projects, rig upgrades and retrofit requirements.
| Custom Item | Available Scope |
|---|---|
| Motor Power | 3–22 kW |
| Gearbox | Helical-bevel / worm gear |
| Reduction Ratio | 20:1 / 25:1 |
| Shaft Length | Tank-specific |
| Impeller Diameter | Approx. 600–1200 mm |
| Impeller Quantity | Single / dual |
| Drive Layout | Horizontal / vertical |
| Mounting Base | Custom fabricated |
| Bolt Pattern | Existing / new layout |
| Voltage | Project-specific |
| Frequency | 50 / 60 Hz |
| Explosion Protection | Project electrical requirement |
| IECEx / ATEX Motor Option | Available |
| Paint | Project specification |
| Nameplate | Project identification |
| Documentation | Project datasheet and drawings |
Replacement requirements often follow motor failure, gearbox wear, shaft damage, corrosion, rig refurbishment or fleet standardization.
SGPE manufactures dimensionally matched replacement Mud Agitators for existing land and offshore rigs. We reproduce the required installation interface while configuring the drive and electrical package to the project specification.
| Replacement Parameter | SGPE Matching Scope |
|---|---|
| Motor Power | Existing or updated requirement |
| Voltage | Match rig electrical supply |
| Frequency | Match existing system |
| Gearbox Type | Existing or new configuration |
| Reduction Ratio | Match required speed and torque |
| Output Speed | Match operating requirement |
| Drive Layout | Horizontal / vertical |
| Mounting Footprint | Match existing tank structure |
| Bolt Pattern | Match existing installation |
| Shaft Length | Match tank depth |
| Impeller Diameter | Match or optimize original |
| Impeller Quantity | Single / dual |
| Impeller Elevation | Match tank geometry |
| Hazardous-Area Motor | Match rig specification |
| Available Envelope | Match installation space |
For a fast replacement Mud Agitator quotation, send the existing equipment nameplate, overall photograph, gearbox photograph, mounting dimensions, bolt pattern, shaft length, impeller diameter and tank depth.
When the original datasheet is unavailable, photographs and field measurements provide a practical starting point. We use them to establish the main mechanical and electrical interfaces before finalizing the replacement configuration.
Spare Parts, Inspection and Project Documentation
SGPE supplies complete agitators as well as components for maintenance and overhaul.
| Spare Part | Main Function |
|---|---|
| Electric Motor | Provides drive power |
| Reduction Gearbox | Reduces speed and increases torque |
| Vertical Shaft | Transfers torque to the impeller |
| Impeller | Generates drilling fluid movement |
| Coupling | Transfers mechanical power |
| Bearings | Support rotating components |
| Shaft Stabilizer | Controls long-shaft movement |
| Mounting Base | Supports the drive assembly |
| Coupling Guard | Protects rotating components |
| Fasteners | Secure the equipment |
For contractors operating several rigs, we can standardize selected agitator and spare-parts configurations to simplify inventory and maintenance.
Before shipment, our inspection focuses on the main mechanical, dimensional and electrical details.
| Inspection Item | Main Verification |
|---|---|
| Electric Motor | Power, voltage, frequency and nameplate |
| Gearbox | Model, arrangement and reduction ratio |
| Shaft | Length, straightness and connection |
| Impeller | Diameter, blade design and quantity |
| Coupling | Fit and alignment |
| Protective Guard | Installation and clearance |
| Mounting Base | Dimensions and bolt pattern |
| Rotation | Correct direction |
| Functional Run | Stable mechanical operation |
| Fasteners | Assembly condition |
| Coating | Surface preparation and finish |
| Equipment Marking | Project identification |
| Packing | Export transport protection |
Project-specific inspection requirements can form part of the ITP. When the purchase order requires third-party inspection, SGPE coordinates the agreed witness, hold and document-review points.
The project document package can include the equipment datasheet, general arrangement drawing, motor datasheet, gearbox information, O&M manual, spare-parts list, inspection records, certificate of conformity, packing list and final manufacturing records required by the purchase order.
Explosion-Proof Mud Agitator and Electrical Options
Oil and gas drilling installations often place mud tank equipment in classified hazardous areas. The motor and associated electrical package must therefore match the project specification.
| Electrical Parameter | Available Configuration |
|---|---|
| Phase | Three-phase |
| Frequency | 50 Hz / 60 Hz |
| Common 50 Hz Voltage | 380 / 400 / 415 V |
| Common 60 Hz Voltage | 440 / 460 / 480 V |
| Other Voltage | Customized |
| Motor Type | Oilfield-duty / explosion-proof |
| Hazardous-Area Classification | Project requirement |
| Gas Group | Project requirement |
| Temperature Class | Project requirement |
| Motor Protection | Project requirement |
| IECEx-Certified Motor Option | Available |
| ATEX-Certified Motor Option | Available |
| Control Interface | Coordinated with rig electrical system |
For an Explosion-Proof Drilling Mud Agitator, we configure the motor and electrical interfaces around the specified hazardous-area requirements.
For quotation, provide the voltage, frequency, area classification, gas group, temperature class and required motor protection.
Installation and Maintenance
The agitator normally mounts on the structural top of the mud tank. The motor and gearbox remain above the tank deck, while the shaft extends vertically into the drilling fluid.
The supporting structure must carry the equipment weight and dynamic operating loads.
Installation should maintain sufficient clearance from tank dividers, suction lines, mud guns, internal piping and access hatches. The layout should also leave enough space for gearbox lubrication, motor inspection, coupling maintenance and future shaft removal.
For new SGPE mud tank projects, we can incorporate the agitator mounting structure into the tank fabrication so the equipment position, internal piping and service access are coordinated from the start.
Routine maintenance should focus on gearbox lubricant condition, motor temperature, vibration, coupling alignment, mounting-bolt tightness, shaft movement, impeller condition and stabilizer wear.
Long-shaft configurations require additional attention to alignment and stabilization. After electrical maintenance, operators should verify the correct direction of rotation before returning the equipment to service.
Drilling Mud Agitator Selection and RFQ Guide
Correct selection starts with the mud tank, drilling fluid and installation conditions. Providing these details at the RFQ stage helps us select the motor, gearbox, shaft and impeller configuration more efficiently.
1. Mud Tank and Drilling Fluid Data for Agitator Selection
Tank geometry and drilling-fluid properties determine the required circulation duty, impeller size, shaft length and torque.
| Selection Item | Information to Provide | Why It Matters |
|---|---|---|
| Tank Dimensions | Length × width × depth | Defines circulation area |
| Compartment Dimensions | L × W × H | Defines each agitation zone |
| Working Mud Level | mm / m / ft | Determines impeller submergence |
| Working Volume | m³ / bbl / gal | Supports turnover calculation |
| Tank Duty | Active / suction / reserve / mixing / weighted / kill | Defines agitation duty |
| Drilling Fluid | WBM / OBM / SBM | Defines fluid characteristics |
| Maximum Mud Density | SG / ppg | Determines mechanical load |
| Rheology / Viscosity | PV / YP / gel or operating data | Influences torque and circulation |
| Weighting Material | Barite or project material | Defines settlement tendency |
| Required Turnover | Seconds | Defines circulation requirement |
| Internal Piping | Layout drawing | Confirms rotating clearance |
| Mud Gun / Suction Location | Layout drawing | Coordinates tank circulation |
For weighted or high-density drilling fluids, maximum mud density and rheology are especially important because they directly affect gearbox torque and impeller loading.
2. Mechanical, Electrical and Project RFQ Requirements
After reviewing the tank and fluid data, we match the mechanical arrangement and electrical configuration to the drilling rig and installation.
| RFQ Item | Information to Provide | Why It Matters |
|---|---|---|
| Motor Power | Required value or SGPE selection | Defines drive requirement |
| Gearbox Type | New selection or existing type | Defines mechanical arrangement |
| Reduction Ratio | 20:1 / 25:1 / specified | Determines output speed |
| Output Speed | rpm | Confirms operating condition |
| Impeller Diameter | Existing or selected | Influences pumping capacity |
| Impeller Type | Flat/Straight-Blade / Canted-Blade | Defines flow pattern |
| Impeller Quantity | Single / dual | Controls vertical circulation |
| Shaft Length | Existing dimension or tank depth | Matches installation |
| Voltage | Rig power supply | Defines motor configuration |
| Frequency | 50 / 60 Hz | Defines electrical configuration |
| Hazardous Area | Project classification | Defines explosion-proof motor requirement |
| Mounting Footprint | Existing dimensions | Critical for retrofit |
| Bolt Pattern | Existing dimensions | Critical for replacement |
| Rig Type | Land / offshore / workover | Defines operating environment |
| Project Type | New build / retrofit / replacement / spare | Defines supply scope |
| Quantity | Required units | Defines production scope |
| Inspection | Factory / third-party requirement | Defines ITP scope |
| Documentation | Purchase-order requirement | Defines document package |
For replacement equipment, send the existing nameplate, overall equipment and gearbox photographs, mounting dimensions, bolt pattern, shaft length, impeller diameter and tank depth. These details help us prepare a dimensionally matched replacement configuration.
Frequently Asked Questions About Drilling Mud Agitators
1. What is a Drilling Mud Agitator and what does it do in an oilfield mud tank?
A Drilling Mud Agitator is a mechanical mixing unit that maintains continuous drilling fluid circulation inside an oilfield mud tank. It is also commonly called a Mud Agitator, Mud Tank Agitator, Drilling Fluid Agitator or Oilfield Mud Agitator.
The motor drives a reduction gearbox, vertical shaft and submerged impeller, which circulate the mud and keep barite, weighting materials and treatment chemicals distributed throughout the compartment. The agitator supports stable mud density and rheology in active, suction, reserve, mixing and weighted mud tanks while solids control equipment removes unwanted drilled solids.
2. Why does a drilling rig need a Mud Tank Agitator?
A drilling rig needs a Mud Tank Agitator to prevent barite and other required drilling-fluid materials from settling when the mud remains in a tank for extended periods. Continuous agitation improves fluid uniformity, reduces heavy deposits on the tank floor and helps maintain consistent mud properties before the fluid reaches the drilling pumps.
This function is especially important in active mud tanks, suction tanks, reserve tanks and weighted mud compartments. Land rigs, offshore rigs, workover units and high-density mud systems can all require continuous tank agitation.
3. What motor power should I choose for a Drilling Mud Agitator?
SGPE supplies Drilling Mud Agitator configurations from 3 to 22 kW, including common 5.5, 7.5, 11, 15, 18.5 and 22 kW motor sizes. The correct motor power depends on the tank dimensions, working volume, mud density, rheology, impeller diameter, shaft length and required turnover rate.
An 11 kW or 15 kW Mud Agitator, for example, can use different impeller and gearbox configurations depending on the actual tank duty. We therefore select the motor, gearbox, shaft and impeller as one complete agitation system rather than sizing the unit by motor power alone.
4. What is the normal output speed of an Oilfield Mud Agitator?
Common nominal output speeds for an Oilfield Mud Agitator are 60 rpm and 72 rpm. The reduction gearbox converts the higher motor speed into the low-speed, high-torque output required to drive the submerged impeller. The correct operating speed must work together with the impeller diameter, blade geometry, mud density and tank geometry.
A higher rpm does not automatically provide better agitation because excessive speed can increase mechanical load without improving useful circulation throughout the tank.
5. What turnover rate should a Drilling Mud Agitator provide?
The required turnover rate depends on the mud tank duty and drilling-fluid properties. Typical engineering references use approximately 50–75 seconds for active or material-addition compartments, 65–85 seconds for suction sections, 50–80 seconds for reserve tanks and 40–65 seconds for pill or specialty-fluid tanks.
Turnover should be evaluated together with the tank working volume and impeller pumping rate. Weighted mud, high-density drilling fluid, internal piping and restricted impeller clearances can all change the final agitator sizing requirement.
6. Should I choose a single or dual impeller Mud Agitator?
A single-impeller Mud Agitator suits many conventional active, suction and reserve mud tanks. A dual-impeller Mud Agitator places two impellers at different elevations and improves vertical circulation in deeper tanks or compartments containing weighted and high-density drilling fluids.
The final choice depends on tank depth, working mud level, shaft length, fluid density and turnover requirement. Long-shaft units can also use a stabilizer to control shaft movement during continuous operation.
7. Can a Drilling Mud Agitator handle WBM, OBM, SBM and high-density mud?
Yes. SGPE configures Drilling Mud Agitators for water-based mud (WBM), oil-based mud (OBM), synthetic-based mud (SBM), weighted mud and high-density drilling fluids. WBM systems require effective circulation of clay, additives and weighting materials, while OBM and SBM systems also need stable fluid homogeneity during treatment and storage.
High-density and weighted mud create greater torque demand because barite increases both settlement tendency and mechanical load on the impeller. These conditions are common in deep wells, HPHT drilling, directional wells and offshore drilling operations.
8. What is the difference between a helical-bevel and worm gear Mud Agitator?
Both gearbox types reduce motor speed and increase torque, but they use different mechanical arrangements. A helical-bevel Mud Agitator provides compact and efficient torque transmission and works well for continuous-duty active tanks, offshore modules and installations with limited deck space.
A worm gear Mud Agitator provides a straightforward low-speed drive and remains widely used on conventional mud tanks and replacement projects. We select the gearbox according to torque demand, installation space, maintenance access and compatibility with the existing tank layout.
9. Can SGPE supply an Explosion-Proof Drilling Mud Agitator for offshore rigs?
Yes. SGPE supplies Explosion-Proof Drilling Mud Agitators for land and offshore installations that require hazardous-area motor configurations. These units can be configured for offshore platforms, jack-up rigs, semi-submersibles, drillships and other drilling environments where electrical equipment must match the project area classification.
IECEx- or ATEX-certified motor options are available for projects that specify these requirements. For quotation, provide the voltage, frequency, hazardous-area classification, gas group, temperature class and required motor protection.
10. How many Mud Agitators does one drilling mud tank need?
There is no fixed number of Mud Agitators for every drilling mud tank because the requirement depends on the tank dimensions and compartment layout. Long tanks, deep compartments and multi-compartment systems often need several agitation points to maintain adequate circulation.
Working volume, mud density, internal piping, suction location, mud gun position and required turnover also affect the final quantity. SGPE evaluates each tank compartment separately instead of relying on one oversized agitator to circulate the entire system.
11. Can SGPE supply a replacement Mud Agitator for an existing drilling rig?
Yes. SGPE manufactures dimensionally matched replacement Mud Agitators for existing land rigs, offshore rigs and workover units. We can match the required motor power, voltage, gearbox arrangement, reduction ratio, mounting footprint, bolt pattern, shaft length, impeller diameter and available installation envelope.
If the original datasheet is unavailable, send the existing equipment nameplate, overall photographs, gearbox photograph, mounting dimensions, shaft length, impeller diameter and tank depth. These details allow us to establish the main mechanical and electrical interfaces for the replacement unit.
12. What information do I need for a Drilling Mud Agitator price or quotation?
For an accurate Drilling Mud Agitator price or quotation, provide the mud tank dimensions, working volume, drilling fluid type, maximum mud density, voltage, frequency, hazardous-area requirement and required quantity. Rheology data, motor power, gearbox type, reduction ratio, shaft length and impeller diameter help us complete the technical selection more efficiently.
For replacement equipment, include the existing nameplate, equipment photographs and mounting dimensions. Please also identify whether the requirement is for a land rig, offshore rig, workover unit, new mud tank, retrofit project, solids control system, multi-unit order or spare unit so SGPE can prepare the corresponding technical configuration and commercial quotation.
Request a Drilling Mud Agitator Quote from SGPE
SGPE supplies Drilling Mud Agitators for new mud tank projects, rig upgrades, offshore installations, replacement requirements and complete solids control systems.
Our configurable range includes 3–22 kW motors, 60/72 rpm output speeds, 20:1 and 25:1 reduction ratios, 600–1200 mm impellers, single or dual impellers, custom shaft lengths and explosion-proof motor options.
For a new project, please send the mud tank dimensions, working volume, drilling fluid type, maximum mud density, electrical requirements and required quantity.
For replacement equipment, send the existing nameplate, equipment photos, mounting dimensions, shaft length, impeller diameter and tank depth. These details help us match the installation and select the correct motor, gearbox, shaft and impeller configuration.
Email: info@sgpe.com
Tel/Whatsapp: +86 186-1599-5239
