mapping and visualizing “dolomite chimneys”
DESCRIPTION
MAPPING AND VISUALIZING “DOLOMITE CHIMNEYS”. J. R. WOOD MICHIGAN TECHNOLOGICAL UNIVERSITY. ORDOVICIAN PRODUCTION IN MICHIGAN. CHARACTERIZED BY ELONGATE, LINEAR FIELDS TRENDING NW-SE PRIMARY PRODUCTION FROM TRENTON-BLACK RIVER FMS. - PowerPoint PPT PresentationTRANSCRIPT
MAPPING AND VISUALIZING “DOLOMITE CHIMNEYS”
J. R. WOOD
MICHIGAN TECHNOLOGICAL UNIVERSITY
ORDOVICIAN PRODUCTIONIN 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
SOURCE: OIL & GAS FIELDS SYMPOSIUM, MICHIGAN BASIN GEOLOGICAL SOCIETY
DEEP RIVER FIELD
DEEP RIVER FIELD
•MIDDLE DEVONIAN DOLOMITES
PRODUCES FROM “ANOMALOUS”SECONDARY DOLOMITE
•5.5 MI. LINEAR TREND - STRIKES•N 60 W, 1/2 MI. WIDE
•ZONE CUTS ACROSS DEEP RIVER DOME
REED CITY & DETROIT RIVERPRODUCTION
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 NUMBER:DE-AC26-98BC15100
NAME AND ADDRESS OF SUBMITTING ORGANIZATION: MICHIGAN TECHNOLOGICAL UNIVERSITY, 1400 TOWNSEND DRIVE, HOUGHTON, MI.
POSSIBLE MODEL FOR MICHIGAN “CHIMNEYS”
POSSIBLE MODEL FOR MICHIGAN
KARSTIFICATION
CONCLUSIONS• KARSTIFICATION & DOLOMITIZATION
ARE PRIMARY PROCESSES IN MICHIGAN RESERVOIRS
• RESERVOIR-SCALE FRACTURES CAN BE RELIABLY MAPPED USING CONVENTIONAL DRILLER’S REPORTS
• GIS SOFTWARE (e.g. ArcView) FACILITATES RE-MAPPING