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