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Use of seismic attributes and open-hole log data to characterize production variability in a fractured carbonate play; a case study from Madison County, Texas

Courtney Beck, Anna Khadeeva, Bhaskar Sarmah and Trey Kimbell
Use of seismic attributes and open-hole log data to characterize production variability in a fractured carbonate play; a case study from Madison County, Texas
Interpretation (Tulsa) (February 2019) 7 (1): T167-T178

Abstract

Understanding natural fracture systems is key for tight carbonate plays, in which production is dependent on secondary interconnected porosity networks. Locating geographic areas and stratigraphic sections with high natural fracture density and optimizing well locations and perforations to connect these fractures can enhance well performance and asset value. There is substantial production variation in the Cretaceous stacked carbonate play in East Texas, despite similarities in well completion and perforated intervals. Petrophysical property models did not explain the significant variation in well production; therefore, we have developed a multidisciplinary workflow combining seismic and log data with the goal of identifying faulting and natural fractures and understanding their effect on production. We used seismic discontinuity to map faults as the main indicator of presence of fractures. We calibrated triple combo logs with an image log to generate an indicator curve to identify natural fractures. The fracture indicator curve provided a good prediction of where natural fractures may occur, and discontinuity maps revealed a good correlation to well production. Furthermore, we concluded that drilling too closely to large faults negatively impacted production and correlated with increased water production. The workflow developed here can be used to optimize well placement in the stacked carbonate play of Madison County, Texas, and it can be applied to other fractured carbonate reservoirs.


ISSN: 2324-8858
EISSN: 2324-8866
Serial Title: Interpretation (Tulsa)
Serial Volume: 7
Serial Issue: 1
Title: Use of seismic attributes and open-hole log data to characterize production variability in a fractured carbonate play; a case study from Madison County, Texas
Affiliation: Halliburton, Houston, TX, United States
Pages: T167-T178
Published: 201902
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 25
Accession Number: 2019-009264
Categories: Economic geology, geology of energy sourcesApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Technical papers
Illustration Description: illus. incl. block diag., sect., strat. cols., geol. sketch maps
N30°49'60" - N31°07'00", W96°13'60" - W95°37'00"
Secondary Affiliation: Burk Royalty, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 201907
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