Transcript Williams IRIS (Hydrocarbon Industry)

Data Acquisition in Hydrocarbon
Exploration
IRIS Instrumentation Technology Symposium
Albuquerque, New Mexico
June 17, 2011
Scott Williams – Guralp Systems
Agenda
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3D Seismic
Active Sources
Sensors
Recording Systems
– Cabled Systems
– Cableless Systems
3D Reflection Seismic
• High Density
• Long Offset
• Wide Azimuth
Active Sources
• 60,000-80,000 lbs.
• 60,000-80,000 lbs. peak force
• 5-20 per crew
Sensors
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10 Hz tight tolerance vertical geophones
Strings of 3-12 (72 per receiver station in Saudi)
High sensitivity geophones
3C MEM’s accelerometers
Recording Systems
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Light weight, low volume
Low Power
Rugged
Reliable
All environments
Efficient
Economical
3K-100K+ channels
Cabled Systems
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24 bits at 2ms sample rate (500sps)
Power down the line (50V DC)
Digitize at the receiver station
2,000 channels in-line
10,000 channels cross line (100 Mb)
Cabled Systems
Piceance Basin Survey (2009)
• 3D, 82 square miles, 150 days of recording
• 80,000 active 24 bit channels at 2 ms. sample rate
(500sps)
• Over half were 3C MEM’s accelerometers, balance
were vertical 10Hz geophones.
• In-line copper wire telemetry, cross-line fiber optic
• Over 1700 miles of telemetry cable. (~300 tons)
• Continuous recording for 8-10 hours per day
• 3-4 TB of data per day
Cableless & Wireless
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Less than 10% of the acquisition systems
At least 10 manufacturers
1/3 to 1/2 the weight
Lower HSE exposure
Greater efficiency
In-fill on cabled systems
Dumb Nodes
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GPS disciplined clocks
Continuous recording
24 bit or greater ADC
On board flash memory
SOH at time of deployment
Shooting Blind
2-3 weeks continuous recording
Data collection at a central location or in the field
Large channel counts at a relatively economical cost
Dumb Nodes
• Geospace GSR (1-4 channels – 24 bit)
• Autoseis HDR (1 channel – 32 bit)
• FairfieldNodal Zland (1 channel – 24 bit)
Intelligent Nodes
• Command, synchronization, and control via radio
• QC attributes via radio
• Drive by data collection via Wi-Fi
Intelligent Nodes
INOVA Firefly
Intelligent Nodes
Sercel Unite
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Wireless “drive by” data harvesting.
Wi-Fi
Data storage
36 Hr internal battery
Intelligent Nodes
iSeis Sigma
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Storage mode
Mesh Radios for QC
Wi-Fi for Data return
Cabled mode
Real-time Wireless
Wireless Seismic RT 1000
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160 active channels per line @ 2ms.
2.4 GHz, bucket brigade in-line
5.6 GHz back haul
10,000 channel central recorder
½ mile range
Questions?