well planning in an integrated 3d environment

1
Well Planning in an Integrated 3D
Environment The Past - The Present - The
Future Jochen Rappke, Olav Barkved, Tron
Kristiansen, Trevor Ricketts BP Norway
2
Motivation Valhall Reserves History
1 billion
1000
Waterflood
Additional Reserves
800
License extension
Reserves MMSTB of Oil
600
Remaining Reserves
500
400
250
200
Production so far
0
2000
1986
1993
3
Motivation Valhall Production Well Failures
1. horizontal
drilling stop
agressive production unstable horizontals
17 new slots better completions
gravel packing
14
7
0
1982 1990 2000
4
Motivation Drilling in a Dynamic Subsurface

• ca 30 wells abandoned due to casing deformations
  since production start-up
• 60 above the reservoir, 40 within the reservoir
• 4 meter seafloor subsidence since production
  start-up

5
Motivation Valhalls Hostile Overburden
an extremely fine balance between mud losses and
hole collapse shallow gas lime stone
stringers time effects on shale in overburden
6
The Past Boring Tables
7
The Past MD versus ms?
Valhall platform and crest of field
TD
Reservoir Entry Point
8
The Past 3D For Me - Not You!
9
The Past

• The Good
• established procedures and expectations
• The Bad
• ineffective communication between GGs and
  drillers (explaining the shape of a fault to a
  driller over the telephone at 3 in the morning)
• subjective use of historic data/warstories (I
  remember back when we drilled F16)
• and limited use of offset well data (I dont
  remember F16 at all)
• uncritical use of coherency maps as a
  replacement for fault maps
• little integration between subsurface
  departments and drilling (here are your faults
  now you plan your well)
• complicated documentation

10
The Present Automatic DIMS Data Extraction
...Problem?
Fast - but needs QC
Boring tables 2...
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The Present Manual DIMS Data Extraction
Slow - but high quality
Boring tables 3...
12
The Present Operations Geologists Geolog Data
Only partly relevant - needs QC/thinning
Boring tables 4...
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The Present UNIX based visualization
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The Present Visualization of Drilling Databases
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The Present Visualization of Drilling Databases
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The Present HIVEs and CAVEs
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The Present Portable PC-based visualization
Staff? portrait courtesy of Voxelvision
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The Present

• The Good
• Great Teamwork!!!
• enthusiastic reception by offshore teams
• stimulates communication between GGs and
  drillers
• visualy attractive (replacing Cindy Crawford in
  the mud logging units?)
• HIVEs to focus core planning teams
• use of DIMS data motivates better reporting into
  database
• reporting from new wells standardized
• loads of untapped future development potential
• The Bad
• needs resources to prepare/QC data and get
  existing database in shape
• databases not yet portable
• requires change

19
The Future

• The Good
• portable databases or portable links into fixed
  databases
• real time and automatically updated databases
• further integration (visualize mud logging data,
  ROP, WOB, Torque, etc.)
• visualization of uncertainty
• allow time and depth based review of data
• use as a decision making tool on rig floor
• standardized and fully electronic reporting
• extend to include completion and stimulation
  jobs
• The Bad
• requires effort to change and learn
• the future is still a little way off ...

20
Credits

• Landmark support, internal and international
  (Jonathan Jenkins, Roald Aspeli, Jonathan Zwaan,
  Glen McColpin, )
• bp subsurface and drilling department (Mike
  Simpson (BHI), Dave Phillips (BHI), Jens
  Schougaard (Maersk), Mike Jackson, Jan-Erik
  Olvin, Mark Taylor, Lorraine Beacom)
• bp no drilling surprises network (Jonathan
  Holt, Rusty Forman)
• bp visualization network (chief geoVIZicist
  Dave Roberts)
• Valhall partners Amerada Hess, TotalElfFina and
  Enterprise Oil