Wholesale Fracturing of Carbonate Rocks during Subsidence: Tectonics, Geometry and Implications for Reservoir Studies

Giovanni Bertotti, Kevin Bisdom, J Reijmer, H Bezerra, C Cazarin

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review


We constrain fracture networks in flat-lying shallow water carbonates producing fracture models at scale from cm-to tens of meters over a large area of several tens of km2.Imaging is integrated with structural observation on the ground and isotope studies on the vein infill. Structures observed are sub-vertical mode I and hybrid veins displaying a conjugate pattern, sub-vertical stylolites and sub-horizontal stylolites. The structures formed during subsidence through a stress field characterized by the presence of a significant sub-horizontal tectonic stress. Little deformation occurred in the uppermost 400-500m. Wholesale fracturing affected the carbonates at depths between 500 and 800m resulting in a pervasive network of open fractures and stylolites. Increasing development of sub-horizontal stylolites generated the calcite which eventually sealed the fractures. Using the acquired fracture network, we test the impact of different aperture models on flow simulations
Original languageEnglish
Title of host publication78th EAGE Conference and Exhibition 2016, Vienna, Austria
Number of pages5
Publication statusPublished - 2016
Event78th EAGE Conference and Exhibition 2016 - Messe Wien, Exhibition and Congress Center, Vienna, Austria
Duration: 30 May 20162 Jun 2016
Conference number: 78


Conference78th EAGE Conference and Exhibition 2016
Abbreviated titleEAGE 2016
Internet address


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