Product Overview
LNP180-70/GQ-HR 180K Liquid Nitrogen Pump Skid is heavy-duty integrated liquid nitrogen pumping equipment specially developed for onshore oil & gas nitrogen stimulation operations. The whole skid adopts CAT C15 diesel engine as prime power, matched with triplex low-temperature high-pressure plunger pump, USA CS&P cryogenic booster centrifugal pump, DURST transfer case and LINDE closed hydraulic system.
This nitrogen pump skid applies engine waste heat recovery gasification technology, eliminating extra heating fuel consumption, delivering stable nitrogen output at 15℃~21℃. All piping, valves and control cabinet are integrated on a unified steel transport skid, supporting integral hoisting and fast rig-up on site. The unit operates reliably under -29℃ ~ +45℃ ambient temperature, altitude ≤1000m, fully meeting fracturing, well cleanout, pressure testing, nitrogen displacement and snubbing operation demands.
Strictly designed and manufactured following oilfield industry standards, the skid structure is treated with heavy anti-corrosion coating, fully compliant with HSE safety specifications, equipped with PLC automatic monitoring system for full-process real-time data display and emergency protection.
Main Technical Parameters
| Parameter Item | Technical Specification |
|---|---|
| Model | LNP180-70/GQ-HR 180K Liquid Nitrogen Pump Skid |
| Driving Engine | CAT C15 Diesel Engine, Rated 540HP / 550HP, 1800RPM |
| Max Nitrogen Displacement | 180,000 SCFH (5097 Sm³/h) |
| Min Nitrogen Displacement | 21,000 SCFH |
| Max Working Pressure | 10,000 PSI (69MPa) |
| Vaporization Method | Engine exhaust waste heat recovery water-bath evaporator |
| Output Nitrogen Temp. | 15℃ ~ 21℃ |
| Triplex LN2 Plunger Pump | 1.625" plunger, 1.38" stroke, efficiency 90%, 60–1200 RPM |
| Cryogenic Booster Pump | USA CS&P 1.5″×2.5″×6″ hydraulic centrifugal pump |
| Transfer Case | DURST 3PD08, ratio 1:1.23, max torque 2068Nm |
| Hydraulic Brand | LINDE closed variable hydraulic pump set |
| Process Manifold | SPIR STAR; LP 304SS(150PSI), HP 316L(20000PSI) |
| Fuel Tank Capacity | 400L integrated fuel tank |
| Overall Dimension (L×W×H) | ≤5000 × 2550 × 2600 mm |
| Net Weight | ~10 Ton |
| Operating Ambient Temp | -29℃ ~ +45℃ |
| Applicable Altitude | ≤1000m |
| Warranty Term | 12 months after equipment acceptance or 18 months after factory delivery (whichever comes first, excluding wearing parts) |
Core Product Advantages
CAT C15 Original Diesel Power, Stable High Power Output
Equipped with genuine CAT C15 industrial diesel engine with rated 540HP power, matched three-in-one composite radiator that cools water, fuel and hydraulic oil simultaneously, ensuring stable full-load operation under +45℃ high-temperature environments. Electric starting system with reliable cold-start performance under -29℃ low temperature. Flywheel output drives DURST heavy-duty transfer case to split power for hydraulic pump groups, providing sufficient power for cryogenic boosting and high-pressure nitrogen pumping.Waste Heat Recovery Evaporation, Low Energy Consumption & Stable Gas Temperature
Built-in large-capacity exhaust gas heat exchanger and water-bath nitrogen evaporator, recycling waste heat from CAT engine exhaust for liquid nitrogen gasification, no extra auxiliary heating equipment required, greatly cutting operation fuel cost. Constant temperature control system keeps outlet nitrogen stably between 15℃ and 21℃, avoiding ultra-low temperature nitrogen pipeline frost crack risk and improving construction safety.Dual-Stage Cryogenic Pressurization System, Wide Flow Regulation Range
Two-stage pressurization design: USA CS&P low-temperature centrifugal booster pump feeds liquid nitrogen steadily to triplex plunger pump; domestic high-efficiency triplex LN2 pump achieves max 10,000PSI high-pressure output. Pump speed adjustable from 60RPM to 1200RPM, displacement ranges from 21,000 SCFH to 180,000 SCFH, covering small-volume well testing and large-scale nitrogen fracturing construction scenarios. Pump body reaches 90% volumetric efficiency to reduce energy waste.World-Famous Brand Hydraulic & Pipeline Components, Ultra High Pressure Resistance
Full LINDE closed variable hydraulic system drives booster pump and plunger pump with stepless flow adjustment; SPIR STAR stainless steel process manifold is adopted: low-pressure pipeline uses 304 stainless steel (150PSI rating), high-pressure section adopts 316L stainless steel with 20,000PSI safety margin, fully resistant to liquid nitrogen low-temperature brittleness and high-pressure impact, zero leakage under long-term continuous operation.Integrated PLC Automatic Control System, Full-Parameter Real-Time Monitoring
Stainless steel explosion-proof PLC control cabinet centralized all operation & monitoring functions: engine start/stop, emergency stop, booster pump speed regulation, real-time display of booster inlet pressure, hydraulic oil pressure, final nitrogen flow/temperature/pressure, plunger pump outlet pressure (0–10000PSI), lubricating oil pressure, hydraulic oil temperature and unit lighting. Automatic alarm & protection functions for overpressure, over-temperature and low lubrication pressure to avoid equipment damage.Integrated Skid-Mounted Design, Easy Transportation & Fast Commissioning
Whole equipment pre-assembled on heavy-duty structural steel skid with rainproof top frame, reserved lifting lugs for integral truck/container transportation. All hydraulic and electrical pipelines pre-connected in factory, equipped with 400L self-contained fuel tank, complete special maintenance tools and spare parts. Compact overall size reduces site occupation, realizing quick hoisting and commissioning after arrival at wellsite without complicated assembly work.All-Climate Anti-Corrosion & HSE Safety Design
Skid base and frame go through sandblasting rust removal + heavy industrial anti-corrosion paint spraying, adapting to desert, cold northern and coastal high-humidity oilfields. All high-pressure pipe joints equipped safety protection covers, full set of emergency stop, pressure relief and overpressure relief valves. Standard maintenance walkways and safety warning signs are arranged around the skid to meet international oilfield HSE management standards.Application Scenarios
- Oil & gas well nitrogen fracturing, nitrogen foam acidizing stimulation
- Wellbore nitrogen displacement, cleanout, paraffin removal and water blocking treatment
- High-pressure well pressure testing, leak detection and pipeline purging
- Underbalanced drilling, snubbing non-stop production operation
- Coalbed methane, shale gas unconventional reservoir nitrogen injection development
- Cold region oilfield winter construction, low-temperature well servicing operation
Standard Delivery Scope
- Complete HTYD180-70/GQ-HR liquid nitrogen pump skid main frame
- Genuine CAT C15 diesel engine + DURST 3PD08 transfer case
- Triplex low-temperature high-pressure LN2 plunger pump assembly
- USA CS&P cryogenic centrifugal booster pump + LINDE full hydraulic system
- Exhaust gas heat exchanger & water-bath nitrogen evaporator
- SPIR STAR stainless steel high/low pressure process manifold set
- Stainless steel PLC automatic control cabinet with full monitoring function
- 400L integrated fuel tank, skid frame and rainproof top cover
- Complete set of installation fasteners, maintenance special tools and standard spare parts
- Full set English operation manual, factory certificate and main component original certification documents
