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Evaluation of a workflow to derive terrestrial light detection and ranging fracture statistics of a tight gas sandstone reservoir analog

Wüstefeld, P.; Medeiros, M.; Koehrer, B.; Sibbing, D.; Kobbelt, L.; Hilgers, C.

Abstract:
Understanding natural fracture networks in the subsurface is highly challenging, as direct one-dimensional borehole data are unable to reflect their spatial complexity, and three-dimensional seismic data are limited in spatial resolution to resolve individual meter-scale fractures.

Here, we present a prototype workflow for automated fracture detection along horizontal scan lines using terrestrial light detection and ranging (t-LIDAR). Data are derived from a kilometer-scale Pennsylvanian (locally upper Carboniferous) reservoir outcrop analog in the Lower Saxony Basin, northwestern Germany. The workflow allows the t-LIDAR data to be integrated into conventional reservoir-modeling software for characterizing natural fracture networks with regard to orientation and spatial distribution. The analysis outlines the lateral reorientation of fractures from a west–southwest/east–northeast strike, near a normal fault with approximately 600 m (∼1970 ft) displacement, toward an east–west strike away from the fault. Fracture corridors, 10–20 m (33–66 ft) wide, are present in unfaulted rocks with an average fracture density of 3.4–3.9 m−1 (11.2–12.8 ft−1). ... mehr



Originalveröffentlichung
DOI: 10.1306/04251817103
Scopus
Zitationen: 3
Web of Science
Zitationen: 2
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2018
Sprache Englisch
Identifikator ISSN: 0016-7606, 0149-1423, 1522-1423, 1558-9153, 1943-2674
KITopen-ID: 1000088210
HGF-Programm 35.14 (POF III, LK 01) Geothermische Technologie
Erschienen in AAPG bulletin
Verlag Geological Society of America (GSA)
Band 102
Heft 11
Seiten 2355-2387
Nachgewiesen in Scopus
Web of Science
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