OILWELL A-1100-PT Mud Pump

Unsurpassed reliability: minimize non-production time (NPT) through rugged engineering design with top-notch materials.

Peak performance: continuous high pressure and large displacement over a wide range of operating parameters.

Optimized maintainability: significantly reduced total cost of ownership (TCO) from design to simplify maintenance on site.

Table 1: General Technical specifications for A-1100-PT

This table outlines the core design parameters of the pump and is a quick reference guide for assessing its suitability for your drilling project.

Note: overall dimensions depend on skid and power pack configuration.

Table 2: A-1100-PT performance parameters (displacement vs. pressure)

This table is a key tool used by drilling engineers to perform hydraulic calculations. It clearly shows the relationship between the maximum pressure and displacement of the pump under different cylinder sizes, and provides an accurate basis for optimizing drilling fluid circulation, controlling equivalent circulating density (ECD) and ensuring efficient cuttings removal.

(data are based on 100% volumetric efficiency and 90% mechanical efficiency calculations)

Racks, gears and crankshafts

Frame structure: the use of all-welded steel power frame for the pump to provide the ultimate rigidity and strength. This rugged construction can withstand a full power output of 1100hp without distortion, ensuring precise alignment of internal drive components, which is key to extended bearing and gear life.

Gear system: power is transmitted through precision machined herringbone gears. Compared to conventional spur gears, herringbone gears are designed to provide smoother, quieter operation with a higher load carrying capacity. This design choice effectively reduces the vibration and stress of the gear train and directly improves the overall durability of the pump.

Crankshaft: Made of high grade forged alloy steel (4340 alloy steel) and subjected to a rigorous heat treatment process.

Pinion shafts: dual outrigger design, also made of forged alloy steel (42CrMo) , allows power to be fed from either side of the pump, providing valuable flexibility for rig integration and field layout.

Assembly for reciprocating motion

Connecting rod: the two-piece design greatly simplifies maintenance. During the overhaul, the connecting rod can be installed and replaced in the frame without completely removing the crankshaft, which significantly shortens the maintenance time.

Crosshead and guide: the Crosshead is cast from high strength ductile iron and operates in a replaceable, shim-adjustable guide. This design allows accurate compensation of the wear clearance by adjusting the shims, thereby extending the life of the crosshead and Power Rack.

Bearing and lubrication system

Bearing Configuration: heavy duty roller bearings are used throughout the power end, including double row spherical roller bearings on crankshaft and pinion shafts, and straight roller bearings on connecting rod big end. This configuration can bear high radial load and axial load at the same time, to ensure the stability of the transmission system and long life.

Lubrication system: dual, pressure-splash complex lubrication system is the core of the pump reliability.

Modular"L" design

The A-1100-PT features three fully interchangeable, independently replaceable"L" cylinders (modules) . These modules are made from the highest quality high strength forged alloy steels (AISI 4130, AISI 4135 or 35CrMo) and are obtained with exceptional hardness and durability through forging, CNC Milling and rigorous heat treatment processes. The fabrication of all modules and their components is strictly followed

API 7K quality standard, and through non-destructive testing (NDT) , to ensure the integrity and reliability of each product.

Easy-to-maintain structural features

Valve repair: independent, easy-to-reach screw-in bonnets make inspection and replacement of valves and seats extremely quick, eliminating the need to remove unrelated parts.

Manifolds: suction and discharge manifolds with independent bolted connections are easier to disassemble and maintain than integrated designs.

Cylinder liner fixing and cooling: the strong metal-to-metal cylinder liner locking structure ensures that the cylinder liner will not move under high pressure. At the same time, the integrated all-round cylinder liner flushing system continuously cools and cleans the contact surface between the piston and the cylinder liner, effectively extending the service life of these key wearing parts.

The strength of the A-1100-PT is its versatility. We offer a comprehensive selection of wearing parts that enable customers to optimize pump configurations for optimum performance and maximum operating time based on specific drilling fluid, temperature, and pressure conditions.

Cylinder liner: the first line of defense against wear

We offer three core technologies of cylinder liners to meet the needs of different working conditions.

Table 3: spare parts numbers for A-1100-PT cylinder liners and seals

We offer full size cylinder liners from 4"To 71⁄2" with matching seals. Please refer to our spare parts manual or contact our sales representative for details.

Piston: the core of the pumping action

Different piston designs are designed for different mud systems, pressures and temperatures.

Table 4: A-1100-PT piston spare part number

We provide pistons for all sizes and operating conditions. Please refer to our spare parts manual or contact our sales representative for details.

Valves, seats and accessories

Valve Assembly is the key to control the flow of fluid, and its performance directly affects the efficiency of the pump.

Valve Design: API-7K compliant valve assemblies are available, including Full Open and 4-Web designs to balance flow capacity and solids handling capacity.

Material and workmanship: the body and seat are made of high quality forged alloy steel (e. g. 20CrMnTi) , carburized and hardened to a surface hardness of over HRC60 to effectively resist erosion by abrasive fluids.

Table 5: A-1100-PT hydraulic end wearing parts assembly spare part number

This list consolidates spare parts information for key hydraulic end perishables to simplify your procurement process.

Note: For detailed spare parts number, please contact our sales team or refer to the official spare parts catalogue.

Our Promise: The advantage of original quality

Selecting Oilwell A-1100-PT means you have chosen a proven solution with performance and reliability at its core.

API 7K certification: our pumps and all their key load-bearing components are designed, manufactured and tested in strict compliance with API 7K. This is the oil field equipment safety and reliability of the basic guarantee, but also our solemn commitment to customers 24.

Original Protection: there are parts on the market that claim to be"Interchangeable", but only the original can ensure that the whole pump as an integrated system, to achieve its initial design performance indicators. We control the entire process from the selection of raw materials (such as specific grades of 4135 forged steel) , to the precise heat treatment scheme, to the tolerance control of CNC machining. This systematic quality control ensures perfect fit and function, maximizing the life of all relevant components in the pump unit.

In summary, the Oilwell A-1100-PT triplex mud pump is the most cost-effective and reliable 1100HP grade mud pump on the market with its rugged design, superior performance, and unrivaled maintainability. It is a wise long-term investment for any drilling operation that pursues efficiency and safety. Please contact our sales team immediately for a quote or further technical advice.

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