--> --> Abstract: Jointing, Fracturing, Faulting and Structural Patterns of Indiana and Vicinity: Implications for Regional and Local Fractured Reservoirs, by K. L. Strunk; #90095 (2009)

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Jointing, Fracturing, Faulting and Structural Patterns of Indiana and Vicinity: Implications for Regional and Local Fractured Reservoirs

Kevin L. Strunk
Wabash Resources & Consulting, Indianapolis, IN 46260; [email protected]

Fractured reservoir targets within Indiana and adjoining states include the New Albany, Antrim and Maquoketa shales, the Trenton (Lexington)-Black River limestone sequence, coals, and potentially other units with low or no original porosity and permeability, and more conventional targets, all potentially enhanced via jointing, fracturing and faulting. A recent extensive literature review resulted in the collection of widely published to fairly obscure data sets, maps, geophysical and tectonic interpretations of varying vintage, with a concentration within the Illinois Basin and Cincinnati Arch areas of Indiana. Glacial cover largely precludes surficial data collection in Illinois, and the western Kentucky data set consists largely of the field-mapped geologic quadrangles.

The data overall consists of fracture trace and lineament maps, regional and local fault maps, rose diagrams of joints from outcrops and quarries, and aero-magnetic and gravity interpretations, all presented in a variety of formats and scales, as well as commercial interpretations of various fracture identification borehole logs. When viewed at an appropriate scale in context with geologic bedrock and structure maps, both regional and localized trends become apparent. These trends are related to both older and modern stress fields with interpreted or apparent tectonic, organic, erosional and glacial origins that can be useful for a variety of applications. The better data consists of that directly measured at outcrops and quarry exposures, or from borehole logs, with features mapped from geophysical, remote sensing and satellite sources having less groundproofed correlation.

Direct exploration and production applications to shale and hydrothermal dolomite reservoirs are reviewed.

 

AAPG Search and Discovery Article #90095©2009 AAPG Eastern Section Meeting, Evansville, Indiana, September 20-22, 2009