Seismic Surveying

Seismic Compressor--Reliable Power for Airguns in SeismicSurveying

GREENFIELD isyour specialist for high-pressure systems. As a pioneer in this business wehave been able to maintain and even improve our strong market position providingtotal solutions from a single compressor to complete systems.

Today, GREENFIELD is the technology leaderworldwide with its high-end premium products engineered in Switzerland.With a century of experience in high-pressure technology and the fact of thousandsof compressors installed worldwide, GREENFIELDis ready to serve your needs for peak performance and success in the market.

As part of the Atlas Copco Group GREENFIELD hasglobal access to over 150 markets, which are served through our production facilitieseither in Switzerland, Brazil or in the United States.

This comprehensive Sales and Service Network assures our customers directaccess to the most reliable and technologically advanced equipment available.

More than 50 GREENFIELDcompressors on seismic research vessels worldwide.

Especially for the seismic industry we have developed a compressor systemproviding the seismic companies with a highly flexible source of high-pressurecompressed air as power source for air guns.

During the design of the seismic compressor system, special attention was paidto ensure accurate operation and minimal cost of ownership (energy andmaintenance). The seismic compressor is all tested for shipboard use(inclination angle 22.5^o witnessed and verified byLloyd\'s Register).

Your Benefits Of Choosing GREENFIELD Compressor for SeismicSurveying
1. Short delivery time
2. Vibration absorbers supported compressor and flexible connectingpiping ensure vibration free operation
3. Spare parts dispatch within 24 hours after order
4. Flexible system with small footprint optimized skid
5. The seismic compressor is designed for seismic applications, with highreliability and little maintenance
6. Sophisticated compressor and Master Control System programmed to customer andseismic application specific needs
7. Highly flexible system with backup units if the complete Free Air Deliveryis not needed
8. Global presence

Our scope of supply includes seismic compressor for:
Deepwater exploration
GREENFIELDoffers a combination of screw and reciprocating compressor with high flowcapacities. This flexible system delivers any desirable flow needed for the airguns of the world\'s seismic fleets.

Shallowwaters exploration
Our middle range single reciprocating compressor canbe used for shallow waters exploration. Electrically driven or diesel drivenoptions are available.

TransitionZone (TZ)
Our easy to transport compressor system is driven by either an electrical motoror a diesel engine. A containerized version is also available.

Vertical Seismic Profile (VSP)
For offshore and onshore VSP, GREENFIELDoffers a variety of high pres-sure compressor with final pressures of 2200 psigor 3200 psig. Portable, containerized, diesel or electrical versions areavailable.

Short lead times, high quality products and a reliable service network are ourcustomers benefit.

Design
Water cooled or air-cooled
Electro motor or diesel engine driven
The seismic compressor system consists of a piston type compressor or ascrew/piston type compressor combination or a compound type compressor
Equipped with closed loop fresh/sea water-cooling
PLC controlled MCS

Options
Containers or canopies for on deck installation
Frequency converter control system
Transportable units

TechnicalSpecifications
Pressure 2200 psig/150 bar

Pressure 3200 psig/220 bar

Dimensions and weights are approximate figures for thecomplete compressor system, without control cabinet. Technicaldata subject to modification.