PWLS SIG

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PWLS SIG

• Area of Interest
• the practical definition, movement, and storage
  of EP well log data.
• This group is essentially a cross-vendor,
  cross-product line user community for well log
  data store, data conversion, and data transfer
  products.
• Players
• operators, service and software providers,
  government agencies, consultancies, and POSC.

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PWLS SIG

• Active POSC members include
• Oil companies ExxonMobil, Shell, Hydro, Statoil
• Non-profit US DOI, Norway NPD
• Commercial Baker Hughes, Flare,
  Halliburton/Landmark, Oilware, Paradigm,
  Pathfinder, Schlumberger
• Other attendees included
• Oil companies DONG (Denmark), Shell, Anadarko,
  BP, Burlington Resources, Oxy, Pioneer Nat.
  Resources
• Commercial LogTek (Norway), National Oilwell,
  PetroData, ROQC, Tellus Software, Adaptable
  Technology, DrillingInfo, GTS Geotech, Volant
  Solutions

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PWLS SIG

• History
• Evolved from PWLS project Phase 2
• PWLS Project published Version 1 standards in 01
• 6 major types of acquisition well logging tools
  addressed
• 3 major service companies involved
• Classification
• Good based on broad taxonomy of property
  (measurement) types
• Issue taxonomy was proprietary
• Issue alternate classification was also adopted

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PWLS SIG

• History
• SIG Meetings started in 03
• More players more oil company players
• Clear need to resolve classification issues
• Focus shifted to oil company calculated
• PWLS Version 2 released in 03
• POSC now has rights to the property (measurement)
  type taxonomy
• The alternate classification was eliminated
• Class attributes were added to enhance searching
• Joined and Interpreted curve mnemonics defined
• Supported in PPDM V3.7 work

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PWLS SIG

• History
• SIG Meetings in 04
• Log / Service Classification use by Norways
  DISKOS (SINAS) described
• Changes to joined and interpreted specifications
  proposed by Shell
• Interest expressed in expanding the coverage of
  acquisition curve types
• SIG and Vendor Meetings
• BakerAtlas confirmed that RECALL support for PWLS
  will be upgraded from Version 1 to Version 2 in
  early 05
• RECALL is a product in its own right and it is
  the also underlying engine beneath PetroBank from
  Landmark.

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POSC Standards SIGs
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PWLS SIG

• Whats Next?
• Complete processing of Shells Change Requests
• Expand Acquisition Curve Classification Coverage
• More types of curves
• Additional acquisition service companies
• Improve user documentation and Web Service
  functionality
• Continue work on Calibrated Image specifications
• Q1 review of initial results

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Shells Change Requests

• We try to balance needs of one organization with
  needs of industry as a whole.
• General issues
• Level of granularity
• Scope Some of Shells requests are beyond
  current PWLS scope These will be addressed
  later on.
• Mnemonic spelling
• We are in the process of reviewing detailed
  issues.

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PWLS Joined Curve Standards Classification
Mnemonic Description

• Acoustic_Slowness AC
• Shear_Slowness AC_SHEAR
• AC_SHR_CAL Calibrated Shear Acoustic Slowness
• AC_SHR_GP Geophysical Shear Acoustic Slowness
• Compressional_Slowness AC_COMP
• AC_CMP_CAL Calibrated Compressional Acoustic
  Slowness
• AC_CMP_GP Geophysical Compressional Acoustic
  Slowness
• Acoustic_Impedence AC_IMP

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PWLS Joined Curve Standards Classification
Mnemonic Description

• Acoustic_Slowness AC
• Shear_Slowness AC_SHEAR
• AC_SHR_CAL Calibrated Shear Acoustic Slowness
• AC_SHR_GP Geophysical Shear Acoustic Slowness
• Compressional_Slowness AC_COMP Shell may
  propose DT
• AC_CMP_CAL Calibrated Compressional Acoustic
  Slowness
• AC_CMP_GP Geophysical Compressional Acoustic
  Slowness
• Stoneley_Slowness AC_STONE
• Acoustic_Impedence AC_IMP

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PWLS Joined Curve Standards Classification
Mnemonic Description

• Nominal_Borehole_Size BIT_SIZE
• Caliper CALI
• Bulk_Density DEN
• DEN_GP Calibrated Geophysical Density
• Gamma_Ray GR
• Neutron_Porosity NEU
• Bulk_Modulus BULK_MOD
• Poisson_Ratio PR
• Time TIM_DEP
• Compressional_Shear_Velocity_Ratio VP_VS

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PWLS Joined Curve Standards Classification
Mnemonic Description

• Concentrations
• Potassium_Concentration K
• Gamma_Ray_Minus_Uranium GRKT
• Thorium_Concentration TH
• Uranium_Concentration U
• Photoelectric_Factor PEF

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PWLS Joined Curve Standards Classification
Mnemonic Description

• Resistivity
• Deep_Resistivity RES_DEP
• Medium_Resistivity RES_MED Medium or Shallow
• Micro_Resistivity RES_MIC
• Formation_Resistivity RT
• Flushed_Zone_Resistivity RXO
• Spontaneous_Potential SP

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PWLS Joined Curve Standards Classification
Mnemonic Description

• Resistivity
• Deep_Resistivity RES_DEP
• Medium_Resistivity RES_MED Medium or Shallow
• Shallow_Resistivity RES_SHA Shell may propose
  SHW
• Micro_Resistivity RES_MIC
• Formation_Resistivity RT
• Flushed_Zone_Resistivity RXO
• Spontaneous_Potential SP

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PWLS Interpreted Curve Standards Classification
Mnemonic Description

• Permeability LPERM
• LPERM_NET Net Log-derived Permeability
• Porosity POR
• Effective_Porosity POR_EFF
• POR_NET Net Porosity
• Total_Porosity POR_TOT
• Hydrocarbon_Saturation SHYD
• Water_Saturation SW
• Flushed_Zone_Water_Saturation SXO

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PWLS Interpreted Curve Standards Classification
Mnemonic Description

• Permeability LPERM Shell may propose PERM
• LPERM_NET Net Log-derived Permeability
• Porosity POR
• Effective_Porosity POR_EFF Shell may propose
  PORE
• POR_NET Net Porosity Shell may propose
  PORNET
• Total_Porosity POR_TOT Shell may propose
  POR
• Hydrocarbon_Saturation SHYD Shell may propose
  adding net, effective, effective-net, and
  flushed-zone
• Water_Saturation SW
• Flushed_Zone_Water_Saturation SXO Shell may
  propose adding net, effective, and effective-net

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PWLS Interpreted Curve Standards Classification
Mnemonic Description

• Volume_Fractions
• Anhydrite_Volume_Fraction VANHYD
• Clay_Volume_Fraction VCLAY
• Coal_Volume_Fraction VCOAL
• Dolomite_Volume_Fraction VDOLO
• Halite_Volume_Fraction VHALITE
• Limestone_Volume_Fraction VLIME
• Sand_Volume_Fraction VSAND
• Shale_Volume_Fraction VSHALE

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PWLS SIG

• More
• Overview Presentation
• NPD Presentation
• DISKOS Presentation
• Demo Presentation

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Alan DonigerPOSC Chief Technology Officer24
Greenway PlazaSuite 1000-BHouston, TX
77046-24011 713 267-5124 phone[phone]
faxDoniger_at_POSC.orghttp//www.posc.org