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1SINTEF Petroleum Research

Drilling in an IO Perspective Presented by Rolv Rommetveit; Research Director SINTEF Petroleum Research

3RD International Conference on Integrated Operations in the Petroleum Industry, October 2-3 2007 Trondheim, Norway


Contents

IntroductionVision IO DrillingRT Dynamic SimulationsDiagnosis and Decision Support3D VisualizationEffects of Wired Drill PipeWork Processes will changeDrilling Process ControlConclusions


Some facts

Drilling and well account for appr. 50 % of fielddeveelopment costs!Accelerating rig costs increase significantly the value ofmore effective operationsIn Norway more than 6 billion NOK lost every year due to well problems!


Downtime distribution – one major Norwegian operator

0 500 1000 1500 2000 2500

Techn. sidetrack

Tight hole

Fishing

Lost circulation

Leakage

Well equipment

Wait on production

Pers./Op. failure

Other waiting

Wellbore restriction

Rig equipment

Mech. plugs

Logisitics

Geo. sidetrack

Well control

Formation test

Weather

Hours

0 2000 4000 6000 8000

Pers./Op.failure

Equip. failure

Waiting

Barrierintegrity

Wellconstruction

Tech. ST

Tight hole

Fish

Lost circ.

Geo. ST

Leakage

Wellbore restriction

Mech. plugs

Well control

Formation test

Well eq.

Rig eq.

Other

Production

Logistics

Weather

Planning/executing


Status in Drilling; Norway

Advanced Drilling EquipmentSeveral Billion NOK LOST every year due to DOWNHOLE DRILLING PROBLEMS!! Too Little focus on downhole conditions

ChallengeUtilize drilling data in RT for decision supportRT simulations and forward lookingAutomatic problem detectionCombine drilling process knowledge with optimal machine handlingDrilling Process ControlWork process change


Next generation drilling control systems; Prevent Information overflow & Provide Decision Support

Real Time dynamic models simulating the drilling process.Diagnosis and advisory technology based on combination of real time modeling and drilling data analysisAdvanced 3D visualization; Make it possible for decision makers to “see” what is going on in a well.


Vision

How to make thisbecome REAL?

From RT data to Decision support and Control

Wired drillpipe


Integrated Drilling Simulator; link to reservoir description

Flow model; p, T, cuttings

status

Wellbore Stability model

ROP model

Torque/Drag model

Mechanical Earth Model

Pore Pressure model

Vibration model

Future extensions


Downhole Pressure & Flow Model

FlexibleStructure changes (run-time)Boundary condition changes (run-time)Multiple branchesMultiply connecting branches

Robust and fastDesigned to meet real time requirements

Real time modeAutomatic calibration


Drilling Data Quality

Map of ROP vs. WOB over 2 stands with and without DQM corrections

correcteduncorrected


ROP Optimization

Use Optimum WOB, save 15% drilling timeCure Problems, save 50% drilling time

vibration degrades ROP


Wellbore stability –

Enables search for solutions

Reveals potential stability problems

analyzed by PSI - SINTEF’s Borehole Stability Model


Shale compaction

Quartz cementation

Shale drainage

Hydraulic leakage

Lateral flow

Minimum horizontal stress

Shale compaction

Quartz cementation

Shale drainage

Hydraulic leakage

Lateral flow

Minimum horizontal stress

The unique features of Pressim may be linked to other modelling tools and geological input

Mechanisms can be turned on –off plus add others

Pore Pressure from Basin Modeling

“Interactive pore pressure modelling

while drilling” Pressim models all processes for pressure generation and dissipation – unique features related to modelling of 3D fluid flow

Modelled present day overpressure(bar) in the Fangst Gr., Halten Terrace

Pore Pressure


Diagnosis and Decision SupportReal Time interpretation, diagnosis and advisory technology needs to be developed


…3D Visualization of Operational scenarios…

3D Visualization tool for Remote monitoring and control operations (Virtual Wellbore):

• Subsea installations• Well Intervention• Seismic• Planning and Simulations• Exploration• Drilling optimalization• Production• Maintenance & Modifications• HMS (workprocesses, training, safety..)• Plug & Abandon


Virtual Wellbore Realtime Visualization

Realtime modelling (Installation) Plug in for seismic information Realtime view of ECD model data with PWD data from MWD tool

Casing shoe

Visualization of wash-out, tight spots and cuttings bed

Drillers view with focus on bit movement in the well Geological layers


Wired Drill Pipe

With wired drill pipe; from ”smoke signals” to ”signal highway”Opens up new possibilities for geo steering, RT measurement and transfer of data, RT update of reservoirdescription etcDrilling OptimizationWell and Pressure ControlProactive and not Reactive


Reservoir navigation will improve

Seismic While Drilling SWDVSPWD Vertical Seismic Profile While DrillingResistivity scannerNuclear Magnetic Resonance NMR


Work processes in Integrated Drilling Operations

Task analysisNew work processesCollaboration and decisionmaking


Training simulatorGeologist ?

Operations supervisor

Drilling Sup.

Team leader

Drilling Eng.

Planning team “Drilling

program”

QA from expert support team

Lead Drilling Eng.

Training on “Drilling program”with training simulator

Driller

Drilling Eng.

Driller

Instructor


IO Program 1 Research Tasks

Advanced Integrated Drilling Simulator with Virtual Wellbore

Automated Interpretation, Diagnostics and Advisory in Real Time

Utilization of Increased Bandwidth from borehole

Work Process, Experience Transfer and Training


IO Program 1 Drilling; including Associated Projects

eControl

IO Program 1Drilling

eDrilling

IntegratedDrilling

Simulator

IO Program 1 Drilling develops knowledge and methodology in IO

Link to reservoir and nearwellboreExplore wired drillpipe possibilities

eDrilling; RT simulation, 3D Visualization and DecisionSupport System

eControl focus on the rig, utilizing advanced models for optimization and automation.

Common basis technology.


? Interface

Integrated system; eDrilling

Open Spirit

WITS/WITSML

e-Drilling

User interface Onshore

Drilling instrumentation data

MWD data

LWD data

Tally data

Geo data

Well path data

Objects (3D cad) data

Seabed data

User interface Offshore

Plan/report data

Real Time modules:• Data quality• Downhole pressure

& flow• Torque & Drag• Vibration• ROP• Wellbore stability• Pore pressure• Hole cleaning• Lost circulation

http://www.forskningsradet.no/servlet/Satellite?c=Page&cid=1138785830860&pagename=ForskningsradetEngelsk%2Fpage%2FStandardSidemal


eControl – Closing the ”loop”

Merging process knowledge, simulation models and machine control


Conclusions

IO in Drilling meansRT dynamic simulations, forward looking and decision supportAdvanced 3D Visualization will transfer the work processes in wellconstruction. Subsurface disiplines and drilling/Well will worktogether.Wired drillpipe will greatly improve process control and provide for updating of reservoir description in RTRemote controlled and Automated drilling

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