MAPPING%20AND%20VISUALIZING%20

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MAPPING AND VISUALIZING DOLOMITE CHIMNEYS

• J. R. WOOD
• MICHIGAN TECHNOLOGICAL UNIVERSITY

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ORDOVICIAN PRODUCTION IN MICHIGAN

• CHARACTERIZED BY ELONGATE, LINEAR FIELDS
  TRENDING NW-SE
• PRIMARY PRODUCTION FROM TRENTON-BLACK RIVER FMS.
• FRACTURING AND SUBSEQUENT SECONDARY
  DOLOMITIZATION HAVEDEVELOPED IRREGULAR POROSITY
  ZONES
• MOST FRACTURE ZONES OCCUR ON FLANKS OF MAJOR
  STRUCTURES TRENDING NORTH OR NORTHWEST
• AVERAGE PAY APPROX. 60 FT.
• FIELDS USUALLY HAVE GAS CAP SOLUTION GAS DRIVE

SOURCE OIL GAS FIELDS SYMPOSIUM, MICHIGAN
BASIN GEOLOGICAL SOCIETY
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REED CITY DETROIT RIVER PRODUCTION
DEEP RIVER FIELD

• DEEP RIVER FIELD
• MIDDLE DEVONIAN DOLOMITESPRODUCES FROM
  ANOMALOUSSECONDARY DOLOMITE
• 5.5 MI. LINEAR TREND - STRIKES
• N 60 W, 1/2 MI. WIDE
• ZONE CUTS ACROSS DEEP RIVER DOME

SOURCE OIL GAS FIELDS SYMPOSIUM, MICHIGAN
BASIN GEOLOGICAL SOCIETY
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• DOE PROGRAM
• FUNDAMENTAL GEOSCIENCE FOR RESERVOIR
  CHARACERIZATION
• PROJECT TITLE
• ADVANCED CHARACTERIZATION OF FRACTURED
  RESERVOIRS IN CARBONATE ROCKS THE MICHIGAN
  BASIN
• PRINCIPAL INVESTIGATORS
• JAMES R. WOOD, MICHIGAN TECHNOLOGICAL UNIVERSITY,
  HOUGHTON, MI
• WILLIAM B. HARRISON, WESTERN MICHIGAN UNIVERSITY,
  KALAMAZOO, MI.
• DOE PROJECT MANAGER PURNA HALDER
• DOE AWARD NUMBERDE-AC26-98BC15100
• NAME AND ADDRESS OF SUBMITTING ORGANIZATION
  MICHIGAN TECHNOLOGICAL UNIVERSITY, 1400 TOWNSEND
  DRIVE, HOUGHTON, MI.

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POSSIBLE MODEL FOR MICHIGAN CHIMNEYS
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POSSIBLE MODEL FOR MICHIGAN KARSTIFICATION
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CONCLUSIONS

• KARSTIFICATION DOLOMITIZATION ARE PRIMARY
  PROCESSES IN MICHIGAN RESERVOIRS
• RESERVOIR-SCALE FRACTURES CAN BE RELIABLY MAPPED
  USING CONVENTIONAL DRILLERS REPORTS
• GIS SOFTWARE (e.g. ArcView) FACILITATES
  RE-MAPPING