| Triplex, 1,000 hp class | Three-cylinder positive-displacement pump | 5,000 psi / 34.5 MPa | Up to approximately 1,200 gpm / 4,540 L/min | About 1,000 hp / 746 kW input | Land rigs, medium-depth drilling, and general-purpose circulation | API Spec 7K where specified; pressure-containing parts, relief system, guards, welding records, and hydrostatic test documentation | Fluid ends, liners, pistons, valves, seats, expendable seals, lubrication system, and local technician availability | Medium Balanced acquisition cost, capacity, and maintenance access |
| Triplex, 1,600 hp class | Three-cylinder high-pressure drilling pump | 7,500 psi / 51.7 MPa | Approximately 1,500–1,800 gpm / 5,680–6,810 L/min | About 1,600 hp / 1,193 kW input | Deep land wells, high-density drilling fluids, and demanding directional programs | API Spec 7K or project-equivalent requirements; certified pressure tests, fatigue-critical parts, relief valves, and traceability | Fast access to fluid-end modules, power-end bearings, crosshead parts, expendable kits, and field-service support | Medium to high Higher throughput can reduce circulation time but increases maintenance exposure |
| Triplex, 2,200 hp class | Three-cylinder high-output pump | 7,500 psi / 51.7 MPa; higher ratings require project approval | Approximately 1,800–2,200 gpm / 6,810–8,330 L/min | About 2,200 hp / 1,641 kW input | High-rate drilling, large hole sections, and high-solids or high-density mud programs | API 7K verification, drive-train sizing, pulsation dampener certification, pressure testing, and electrical compliance for the rig package | Inventory of liners, pistons, valves, seats, dampener bladders, bearings, and lifting tools; strong overhaul capability is essential | High Best where high flow offsets the higher energy, transport, and overhaul cost |
| Duplex, 1,000 hp class | Two-cylinder positive-displacement pump | 5,000 psi / 34.5 MPa | Approximately 700–1,100 gpm / 2,650–4,160 L/min | About 1,000 hp / 746 kW input | Workover, well servicing, shallow drilling, and applications requiring robust suction handling | API 7K when used in applicable drilling service; check cylinder, liner, valve, relief, and frame documentation | Large-diameter piston and liner availability, valve access, packing kits, crankshaft inspection, and simple field repair procedures | Low to medium Often attractive for simpler service environments and lower initial complexity |
| Triplex, 750 hp class | Compact three-cylinder pump | 5,000 psi / 34.5 MPa | Approximately 500–850 gpm / 1,890–3,220 L/min | About 750 hp / 559 kW input | Compact land rigs, mining exploration, slim-hole drilling, and lower-flow operations | Confirm API 7K applicability, skid lifting points, pressure-vessel documentation, noise limits, and regional electrical requirements | Compact spare-parts kits, accessible fluid-end design, low-temperature seals where required, and remote technical support | Low to medium Lower logistics and power costs; confirm that flow reserve is adequate |
| Electric-drive triplex, 1,600 hp class | Three-cylinder pump with variable-speed electric drive | 5,000–7,500 psi / 34.5–51.7 MPa, depending on fluid end | Approximately 800–1,700 gpm / 3,030–6,440 L/min | About 1,600 hp / 1,193 kW motor input | Electrified rigs, automated drilling systems, and sites prioritizing controllability and reduced engine emissions | API 7K for the pump package; IEC or equivalent motor requirements, hazardous-area classification, EMC, grounding, and variable-frequency-drive certification | Motor and drive diagnostics, compatible control-system spares, fluid-end kits, commissioning support, and trained electrical technicians | Medium to high Potentially lower fuel and maintenance cost where reliable electrical infrastructure exists |
| Containerized offshore triplex, 1,600 hp class | Packaged three-cylinder pump for offshore deployment | 5,000 psi / 34.5 MPa | Approximately 900–1,600 gpm / 3,410–6,060 L/min | About 1,600 hp / 1,193 kW input | Offshore drilling, modular rigs, marine support units, and projects with restricted deck space | API 7K where specified; marine or offshore structural approval, lifting certification, fire and gas interface, hazardous-area requirements, and corrosion protection | Sealed or protected controls, offshore corrosion-resistant materials, lifting and preservation plans, remote diagnostics, and guaranteed spare-parts lead times | High Packaging and logistics cost more, but standardized modules can shorten installation time |