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Experience Using IntelliServ Broadband Network
for
Prototype Advanced Geosteering System
Mei Choate, Ph.D
Shell International E&P B.V
30-09-2009, Trondheim
Contents
Realtime Geosteering Motivation Enablers for Accurate Geosteering Prototype System Components IntelliServ Broadband Network
- Compliant Tools - Active Source Test - Bit Source Test
Challenges .. And Opportunities for IO
Realtime Geosteering - Motivation
Better defined Earth Model (Reserves, Improved Production and Recovery)
Improved Well Placement (Improved Production, Cost Reduction)
Optimized Drilling Performance (Cost Reduction)
Pressure Detection ahead of the bit (Safety)
Bit / LAB Source
High resolutiondown-hole source & receivers integrated in a drilling system
High resolutiondown-hole source & receivers integrated in a drilling system
Surfacecabin
LABReceiver
Integrated RSSDrilling system
Data
UDRT
Commands
Downhole Source 50 2000 Hz, formation/fluid coupled
Downhole Receiver formation/fluid coupled
Fast Telemetry 106 bps Integrated RSS Drilling System Novel Processing/Imaging Software
100m Lookaround/ahead @ 1m resolution
Enablers for Accurate Geosteering
Prototype System Components
Acoustic Formation-Coupled Source 50 1500 Hz
Acoustic Fluid-Coupled Source 50 1500 Hz (Clamped) Receiver accelerometers & geophones (SR
4000 Hz) ~~
Bit as Source (improvement on SeisBit 50 300 Hz) Near-bit Sub (downhole Bit pilot, surface geophones)
~~
Intellipipe Pearl R&D version 106 bps ~~
Advanced Signal Processing/Imaging single well imaging, good SNR (borehole noise)
Rcv
Src
clamped unclamped
IntelliPipe Compliant Tools
Intellilink board (addressable, RS422)
Inductive coupling double-shouldered TJ
Onboard CPU tool commands, acquisition, send data up hole
User Console software at Surface
IntelliServ Server
GPS & IntelliServ Triggers, synchronised acquisition
Tested with 2 Tools on the Network
IntelliServ Broadband Network Active Sources
1-2 Tools in String (80m)
Non-drilling test scenario
R&D Version IntelliPipe Topdrive swivel, DP, DC, Stab, Repeaters
Max used client bandwidth 600 kbps mostly seismic (SEG2) data
Sync. Surface & Dhole Acquisition 4 kHz SR
GPS / IntelliServ triggers
User Console
Receiver
Data
Source
Commands & Triggers
GPS Trigger
Sensors
Active Source & Receiver Surface Test
Quarry Test
80m hole single tool
IntelliServ Network Bit Source
Bit + Nearbit Sub in String 400m
Drilling 400m vertical hole
Commercial Version IntelliServ Network
Topdrive swivel & saver sub, DP, DC, Stab, Repeaters
Max used client bandwidth < 80 Kbps
Non-sync. Surface & Dhole Acquisition
User Console
Bit Pilot Sub
Data
Bit
Sensors
Challenges Building Reliable Tools
mechanics, hydraulics, electronics, sensor design & placement
IntelliServ Broadband Network rigorous pipe handling procedures, transmission reliability, etc
Geophysical sensor coupling, fidelity, source sweep characteristics & repeatability
Signal Processing/Imaging single-well imaging, SNR (borehole noise), attenuation, p & s waves, etc; RT visualisation of faults/formation tops, integrate/update seismic model
Integrated RSS Drilling System with downhole clutch, downhole power, manage drilling interruptions during acquisition, realtime geosteering, HSE
Imaging of simulated downhole acoustic data
LAB - Acoustic source and receiver in the well Range of investigation 100m @ 1m resolutionTen Kroode et al Patent US 6,510,105 B1
100 m
.. And Opportunities for Integrated Operations
Acknowledgements
The author gratefully acknowledges the contributions of the following, including permission to publish this presentation
Franco Donati, Drilling & Completion R&D Manager, Eni S.p.A
Monte Johnson, IntelliServ R&D (NOV) All Shell / Eni / IntelliServ and other staff who
have worked on the project (2002 2008)
Slide Number 1ContentsRealtime Geosteering - MotivationEnablers for Accurate GeosteeringPrototype System ComponentsIntelliPipe Compliant ToolsIntelliServ Broadband Network Active SourcesActive Source & Receiver Surface TestQuarry Test80m holesingle toolIntelliServ Network Bit SourceChallengesSlide Number 12AcknowledgementsSlide Number 14