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Scoring completion effectiveness in unconventional horizontal wells using 3D seismic attributes

Evan Staples and Brackin Smith
Scoring completion effectiveness in unconventional horizontal wells using 3D seismic attributes (in Resource plays; II, Geophysics, Colin M. Sayers (prefacer), Doug Foster (prefacer) and Malleswar Yenugu (prefacer))
Leading Edge (Tulsa, OK) (December 2015) 34 (12): 1448-1454

Abstract

Using a multihorizontal well-completion pilot in an unconventional oil field in the Lower 48 (contiguous United States) Midcontinent, a workflow is proposed to evaluate the effectiveness of horizontal-well completions through 3D surface-seismic attributes and microseismic data. Three-dimensional surface seismic is often continuous over unconventional fields and provides a measurement in areas where no other data are available. In addition, microseismic is the only geophysical data that allows us to "see" the apparent hydraulic-fracture zone around a wellbore. Using these two geophysical tools integrated with engineering and geologic data such as image logs, total proppant, number of stages, estimates of fracture length and height, permeability, chemical tracers, and production rates, a "geophysical completion scorecard" is developed to evaluate a multiwell horizontal pilot and apply it to additional wells drilled outside the pilot in an effort to predict their completion effectiveness. A postdrill review of production rates in those wells shows good correlation to the scorecard's predictions of completion effectiveness.


ISSN: 1070-485X
EISSN: 1938-3789
Serial Title: Leading Edge (Tulsa, OK)
Serial Volume: 34
Serial Issue: 12
Title: Scoring completion effectiveness in unconventional horizontal wells using 3D seismic attributes
Title: Resource plays; II, Geophysics
Author(s): Staples, EvanSmith, Brackin
Author(s): Sayers, Colin M.prefacer
Author(s): Foster, Dougprefacer
Author(s): Yenugu, Malleswarprefacer
Affiliation: ConocoPhillips, United States
Pages: 1448-1454
Published: 201512
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 13
Accession Number: 2016-005459
Categories: Economic geology, geology of energy sourcesApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 201603
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