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3-D seismic evidence of the effects of carbonate karst collapse on overlying clastic stratigraphy and reservoir compartmentalization

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A multidisciplinary team, composed of stratigraphers, petrophysicists, reservoir engineers, and geophysicists, studied a portion of Boonsville gas field in the Fort Worth Basin of north-central Texas to determine how modern techniques can be combined to understand the mechanisms by which fluvio-deltaic depositional processes create reservoir compartmentalization in a low- to moderate-accommodation basin. An extensive database involving well logs, cores, production, and pressure data from more than 200 wells, 26 mi{sup 2} of 3-D seismic data, vertical seismic profiles, and checkshots was assembled to support this investigation. The authors found the most important geologic influence on stratigraphy and reservoir compartmentalization in this basin to be the existence of numerous karst collapse chimneys over the area covered. These near-vertical karst collapses originated in, or near, the deep Ordovician-age Ellenburger carbonate section and created vertical chimneys extending as high as 2,500 ft above their point of origin, causing significant disruptions in the overlying clastic strata.


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Citation Hardage, B.A. Carr, D.L. ; Simmons, J.L. Jr. ; Jons, R.A. [Univ. of Texas, Austin, TX (United States). Bureau of Economic Geology]; Lancaster, D.E. [S.A. Holditch and Associates, Inc., College Station, TX (United States)]; Elphick, R.Y. [Scientific Software Intercomp, Denver, CO (United States)]; Pendleton, V.M. [Integrity Geophysics, Austin, TX (United States)]
Is NETL associated Yes
NETL Point of Contact Roy Long
NETL Point of Contact's Email Roy.long@netl.doe.gov
NETL program or project KMD
Publication Date 9/1/1996