Gas composition (mol%): Associated gas
Flow rate: 2400-12000Nm ³/d
Intake pressure: 0-0.5 barg
Inlet temperature: ≤ 45 ℃
Exhaust pressure: 10 barg
Main motor power: 75kW
Overall dimensions of the machine: approximately 3500 × 2800 × 1850mm
Whole machine weight: approximately 4.5T
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The DFW-6.57 0-0.5-10 Associated Gas Special Gas Compressor is a reciprocating piston compressor designed for associated gas recovery, boosting, and utilization applications in oil and gas fields.
Associated gas is commonly produced during crude oil extraction and may require pressure boosting before transportation, processing, or reuse. This special gas compressor provides an effective solution for recovering low-pressure associated gas and improving resource utilization efficiency.
With reliable reciprocating compression technology and a skid-mounted configuration, the DFW-6.57 is suitable for oilfield gas gathering systems, flare gas recovery projects, fuel gas supply, and other industrial gas utilization applications.
By recovering and utilizing associated gas that would otherwise be wasted, this compressor helps improve energy efficiency and supports more sustainable oil and gas production operations.
Designed for Associated Gas Recovery
The DFW-6.57 is developed specifically for associated gas compression in oilfield environments, helping recover valuable gas resources and reduce unnecessary emissions.
Reciprocating Piston Compression Design
The piston compression structure provides stable gas displacement and continuous boosting capability for gas gathering and utilization systems.
Suitable for Field Applications
The skid-mounted design integrates the main equipment into a compact package, simplifying transportation and supporting installation in different operating locations.
Clean Gas Compression
The optimized compressor structure helps reduce the risk of oil contamination and supports gas quality requirements for different applications.
Application Scope
The DFW-6.57 Associated Gas Special Gas Compressor is mainly used in:
• Oil and gas field associated gas recovery
• Associated gas gathering and boosting systems
• Flare gas recovery and utilization projects
• Oilfield fuel gas supply systems
• Gas transportation preparation processes
• Industrial gas utilization projects
Highlight Advantages
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| Achieves high-efficiency associated gas recycling to maximize resource utilization and reduce gas waste. | Runs steadily in diverse gas working conditions, ensuring reliable operation for oilfield and industrial gas systems. | Comes with a complete skid-mounted design for easy transportation and fast on-site installation. | Adopts high-quality core components for reliable performance, longer service life and lower running costs. |
Patent Certificates
 | A piston rod thread protective sleeve ZL 2017 2 1907021.7 | | A piston ring support device ZL 2018 2 0294776.2 | |
| A range piston ZL 2017 2 190177.0 for symmetrical balanced compressors | | Integrated long short double compartment ZL 2018 2 0294762.0 |
Compression Principle
The DFW-6.57 operates based on a reciprocating piston compression cycle:
Suction Process
During the suction stroke, the piston moves backward and the cylinder pressure decreases, allowing associated gas to enter the compression chamber.
Compression Process
During the compression stroke, the piston moves forward and reduces the gas volume, increasing the gas pressure.
Discharge Process
When the pressure inside the cylinder reaches the required level, the discharge valve opens and compressed gas is delivered to the downstream system.
Continuous Compression
The repeated reciprocating movement enables continuous gas boosting for associated gas recovery and transportation applications.
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The compressor in this picture is a non-standard product. The product provides independent solutions tailored to customers' specific usage requirements (flow rate/purity/pressure, usage environment, main purpose, and customer specific requirements), from design to product customization.
Structural form: D-type/M-type/S-type/W-type/V-type/Z-type
Cooling method: water cooling/air cooling/mixed cooling
Installation form: fixed/mobile/pry mounted/cabin type
Drive mode: motor drive/diesel engine start
Transportation: sea/air/land
Packaging:
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| Metal cabin | Wooden box | Soundproof cabin |
Project Case
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| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Alibek oilfield in Southern Kazakhstan | Procurement of Molecular Sieve Dehydration, Ethylene Glycol Regeneration and Injection Device, and Fuel Gas Skid in Akimom Gas Field |
Technical Parameter
| No. | Model | Medium | Flow rate (Nm3/h) | Exhaust pressure MPa（G) | Motor power (kW) | Cooling method | Overall dimensions (mm) | Weights (kg) | |
| 1 | DWF-12.4/（9～12）-14 | Carbon dioxide | 6400 | 1.4 | 185 | Air-cooled | 6000×2700×2200 | 10000 | |
| 2 | VWF-2.86/5-16 | Nitrogen | 895 | 1.6 | 55 | Air-cooled | 3200×2200×1750 | 3500 | |
| 3 | ZWF-0.96/5 | Hydrogen chloride | 55 | 0.5 | 11 | Air-cooled | 2000×1500×2000 | 1000 | |
| 4 | DFW-1. 13/0.3-34 | Flash Vapour | 75 | 0.03～3.4 | 18.5 | Air-cooled | 4500×3200×2150 | 5600 | |
| 5 | DFW-6.5/(0～0.5)-10 | Associated gas | 50～100 | 1 | 75 | Air-cooled | 3500×2800×1850 | 4500 | |
| 6 | DFW-4.2/(0.2～1.5)-12 | BOG | 260～540 | 1.2 | 55 | Air-cooled | 3500×3000×2000 | 5500 | |
| 7 | DW-2.45/(6～7)-100 | Carbon Monoxide | 900 | 10 | 160 | Mixed cooling | 6500×3200×1700 | 10000 | |
| 8 | DW-19.8/0.5-7.25 | Methylene chloride | 3.5 | 0.725 | 160 | Mixed cooling | 5200×3000×2350 | 8000 | |
| 9 | DW-8.6/(0～0.2)-8 | Chloromethane | 436 | 0.8 | 75 | Mixed cooling | 3200×2400×1600 | 4500 | |
| 10 | DW-2.4/2.5-11 H | elium Recovery Ga | 450 | 1.1 | 37 | Mixed cooling | 3000×2500×1800 | 3000 | |
Project Case
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| Beijing Hongke Qingneng Technology Co., Ltd. associated gas compressor for Shanxi Yan'an 60000 m3 project | Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Ningxia Zhongneng new materials engineering |
Bengbu United Compressor provides customized solutions for different special gas compression requirements.
According to customer operating conditions, the DFW-6.57 can be customized based on:
• Gas composition and operating conditions
• Required flow rate and pressure range
• Cooling method selection
• Installation configuration, including skid-mounted or cabin-type solutions
• Drive system requirements
Through professional compressor design and manufacturing experience, Bengbu United Compressor provides suitable reciprocating piston compressor solutions for different associated gas recovery and utilization projects.
