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Diffraction imaging in fractured carbonates and unconventional shales

Ioan Sturzu, Alexander Mihai Popovici, Tijmen Jan Moser and Sudha Sudhakar
Diffraction imaging in fractured carbonates and unconventional shales (in Diffraction imaging, Marianne Rauch-Davies (prefacer), John O'Brien (prefacer), William A. Burnett (prefacer) and Sergey Fomel (prefacer))
Interpretation (Tulsa) (February 2015) 3 (1): SF69-SF79

Abstract

Diffraction imaging is recognized as a new approach to image small-scale fractures in shale and carbonate reservoirs. By identifying the areas with increased natural fracture density, reservoir engineers can design an optimal well placement program that targets the sweet spots (areas with increased production), and minimizes the total number of wells used for a prospective area. High-resolution imaging of the small-scale fractures in shale reservoirs such as Eagle Ford, Bakken, Utica, and Woodbine in the US, and Horn River, Montney, and Utica in Canada improves the prospect characterization and predrill assessment of the geologic conditions, improves the production and recovery efficiency, reduces field development cost, and decreases the environmental impact of developing the field by using fewer wells to optimally produce the reservoir. We evaluated several field data examples using a method of obtaining images of diffractors using specularity filtering that could be performed in depth and time migration. Provided that a good migration velocity was available, we used the deviation of ray scattering from Snell's law to attenuate reflection energy in the migrated image. The resulting diffraction images reveal much of the structural detail that was previously obscured by reflection energy.


ISSN: 2324-8858
EISSN: 2324-8866
Serial Title: Interpretation (Tulsa)
Serial Volume: 3
Serial Issue: 1
Title: Diffraction imaging in fractured carbonates and unconventional shales
Title: Diffraction imaging
Author(s): Sturzu, IoanPopovici, Alexander MihaiMoser, Tijmen JanSudhakar, Sudha
Author(s): Rauch-Davies, Marianneprefacer
Author(s): O'Brien, Johnprefacer
Author(s): Burnett, William A.prefacer
Author(s): Fomel, Sergeyprefacer
Affiliation: Z-Terra, Houston, TX, United States
Affiliation: Devon Energy, Oklahoma City, OK, United States
Pages: SF69-SF79
Published: 201502
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 23
Accession Number: 2016-006941
Categories: Economic geology, geology of energy sourcesApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendix
Illustration Description: illus. incl. sects., sketch maps
N42°00'00" - N84°00'00", W141°00'00" - W52°00'00"
Secondary Affiliation: Anadarko, USA, United StatesExxonMobil Upstream Research Company, USA, United StatesUniversity of Texas at Austin, USA, United StatesMoser Geophysical Services, NLD, NetherlandsVector Seismic, USA, United States
Source Note: Online First
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 201604
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