Log Data Usability:

1

• Log Data Usability
• The Service Company Perspective
• A Service Company Perspective
• One Guys Perspective

2
Log Data Usability Problem

• What is the Problem?
• Complexity of data
• Volume of data
• Data is difficult to understand
• Diverse data formats

3
Log Data Usability Problem

• What is Behind the Problem?
• Higher Technology --gt Greater Data Complexity
• Service Differentiation is a Business Driver
• Perception - broad audience of specialists and
  generalists
• (differences in scope, granularity of view)
• Slow uptake of new representation technology by
  some clients
• (DLIS, nD Arrays...)
• Perspective Acquisition vs. Interpretation
• Model Focus Data --gt Activity --gt Real-World
  Objects
• Control of catalogs is distributed across
  non-cooperating entities
• Contractor data models differ from that of common
  data exchange model (DLIS)
• Confusion between control at Class level vs.
  Instance level
• Muddy organizational concepts Service, Tool...
• Need to support Legacy Data

4
Log Data Usability Problem

• What can be done about the Problem?
• Reinforce and promote DLIS as the primary
  exchange model, especially for data acquisition
• Backup Provide tools to produce derivative
  products from original DLIS
• Other formats
• Reduced data sets
• Have centralized dictionary control
• Organize and classify data to improve clarity and
  facilitate filtering
• Improve documentation
• Long-term Adopt a standard exchange model whose
  semantics describe the data context more fully
  than DLIS.

5
Classification of Products (Services, Tools...)

• Namespace (Contractor)
• Tool Model and Tool Type (DLIS TOOL)
• Software Module (DLIS PROCESS)
• Logging Method
• Wireline
• MWD
• Production
• Discipline (see below)
• Logging Technology (see below)

6
Classification of Services, Tools (cont.)

• Discipline
• Completion
• Drilling
• General
• Geological Modeling
• Geology
• Geophysics
• Petrophysics
• Production
• Well Testing

7
Classification of Services, Tools (cont.)

• Logging Technology
• Acoustic
• Auxiliary
• Caliper
• Casing_Inspection
• Cement_Evaluation
• Collar_Locator
• Combination
• Dielectric
• Dipmeter
• Flowmeter
• Fluid_Density
• Geomagnetism
• Geometry
• Gravity
• MWD

• Mechanical
• Nuclear
• Nuclear_Magnetic
• Perforating
• Pressure
• Resistivity
• Sampling
• Scanning
• Special_Purpose
• Spontaneous_Potential
• Telemetry
• Temperature
• Testing

8
Classification of Data (Channels, Parameters...)

• Namespace (Contractor)
• Availability
• Property Type
• Unit Quantity
• Shape and Construct
• Associated Tools
• Associated Software Modules

9
SLB Data Availability

• BASIC The "defining" data of a
  service, usually used "as is by a broad spectrum
• of professionals and softwareproducts,
  typically displayed on the standard
• optical product for the service.
• CUSTOMER Data which are intended for
  customer distribution to supplement and support
• the BASIC data, primarily for the use of domain
  specialists typically includes
• minimum data that are
  required to derive the BASIC data using the
  original
• system or advanced software products
  (GeoFrame).
• PRODUCER Data intended for
  engineering purposes of the producer, usually
  confidential
• or transitory. Item may be written to exchange
  files, but distribution is restricted
• to Schlumberger use only.
• INTERNAL Item is for internal use
  not written to exchange files but still may be
  archived
• and restored.

10
SLB Property Types

• Generic
• Glossary Quality Descriptions
• Hierarchical Organization
• Unit-independent
• Representation-independent
• Currently 3085 Types
• In SLB Data Dictionary
• 30420/30420 Channels are mapped to 753 Property
  Types
• 9762/19779 Parameters are mapped to 1608 Property
  Types

11
SLB Property Types

• Hierarchy Fragment
• Resistivity
• Array_Resistivity
• Array_Induction_Resistivity
• Array_Lateral_Resistivity
• Bound_Water_Resistivity
• Clay_Resistivity
• Deep_Resistivity
• Deep_Induction_Resistivity
• Deep_Lateral_Resistivity
• Dielectric_Resistivity
• Filter_Cake_Resistivity
• Fluid_Resistivity
• Flushed_Zone_Resistivity
• Formation_Resistivity_Sw100
• Formation_Resistivity
• Medium_Resistivity
• Medium_Induction_Resistivity

• Micro_Resistivity
• Micro_Inverse_Resistivity
• Micro_Lateral_Resistivity
• Micro_Normal_Resistivity
• Micro_Spherically_Focused_Resist
  ivity
• Mineral_Resistivity
• Mud_Filtrate_Resistivity
• Mud_Resistivity
• Bottomhole_Mud_Resistivity
• Profile_Resistivity
• Relative_Apparent_Resistivity
• Shallow_Resistivity
• Spherically_Focused_Resistivity
• Shallow_Induction_Resistivity
• Shallow_Lateral_Resistivity
• Water_Resistivity