Membrane Nitrogen Tire Inflation System (Nitrogen Compressor, Nitrogen Injection, Gas Lift)

Introduction to Mobile Nitrogen Generation System

To meet the requirements of nitrogen charging in new oilfield production processes, pipeline nitrogen purging, and other applications, our company has developed a mobile nitrogen generation system, consisting of a screw low-pressure air compressor, a membrane nitrogen generation system, and a high-pressure nitrogen booster compressor system. This system can provide users with a flow rate of 20 Nm3/min and high-pressure nitrogen with a range of 15-35 MPa.

The nitrogen generation system is designed to be mobile and mounted on two skids. The system is divided into three modules: a screw low-pressure air compressor module, a membrane nitrogen generation module, and a high-pressure nitrogen booster compressor module. The screw low-pressure air compressor module and the membrane nitrogen generation module are mounted on one skid, while the high-pressure nitrogen booster compressor system is on another. The system is air-cooled, diesel engine-driven, and equipped with a metal housing, making it easy to install on the chassis of vehicles, especially suitable for field operations in oilfields.

Air from the atmosphere is first compressed to 1.4 MPa by a diesel engine-driven air-cooled screw compressor. It is then dried by a refrigerated dryer and purified through a filter. The compressed air at 1.4 MPa is sent into the membrane nitrogen generation system, where it undergoes permeation diffusion separation, resulting in nitrogen at a pressure of 1.2 MPa with a purity of over 95%. This 1.2 MPa nitrogen is further pressurized to 35 MPa using an air-cooled piston-type compressor.

Components of the Mobile Nitrogen Generation Equipment System

The three main components of the mobile nitrogen generation equipment are as follows:

1. Air compressor unit: An air compressor driven by a diesel engine or electric motor, including an on-site control system.

2. Membrane nitrogen separation device: Air purification treatment system, membrane nitrogen generation system, and central control system.

3. Booster compressor unit: A booster compressor driven by a diesel engine or electric motor, including an on-site control system.

4. Auxiliary equipment: Diesel generator, fuel tank, container/skid body (can be single-box, double-box, or multi-box according to usage requirements), and other equipment to meet the process needs of oil and gas production, such as foam metering pumps, etc.

Applications of the Mobile Nitrogen Generation Truck

Three-phase production operations

1) Maintain well pressure

2) Nitrogen injection into wells together with hydrocarbons, nitrogen gas lift

3) Gas cap, increase oil and gas production

4) Gas lift operation to prevent underground accidents

5) Acidizing, fracturing for unclogging and increased production

6) Thermal recovery assistance and increased recovery

7) Insulating wellbore during steam injection

8) Mud density control

9) Cleaning wells

10) Ideal carrier for surfactants

11) Increase well production

12) Extend well life

Pipeline purging

Pressure testing and purging of pipelines. For ultra-high-pressure membrane, no additional booster compressor unit is required, only a high-pressure air compressor unit is needed to directly generate nitrogen with a pressure of over 30 bar, making it suitable for long-distance purging of large pipelines.

Pipeline nitrogen filling

Purging and maintenance of containers and pipelines for flammable liquids and gases

Pipeline and vessel purging, maintenance, and repair operations

Using nitrogen's inert properties for gas sealing to prevent the release of hazardous materials into the air

Other Applications

1) Coalbed methane regeneration

2) Natural gas gathering stations

3) LNG receiving terminals

4) Offshore drilling/production platforms

5) Natural gas purification plants