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Evaluation of Reservoir Quality and Forecasted Production Variability along a Multi-Fractured Horizontal Well. Part 2: Selected Stage Forecasting
Article

Evaluation of Reservoir Quality and Forecasted Production Variability along a Multi-Fractured Horizontal Well. Part 1: Reservoir Characterization

1
Department of Geosciences, University of Calgary, Calgary, AB T2N 1N4, Canada
2
Geological Survey of Brazil, São Paulo 01304-010, Brazil
3
Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
*
Author to whom correspondence should be addressed.
Academic Editor: R. Marc Bustin
Energies 2021, 14(19), 6154; https://doi.org/10.3390/en14196154
Received: 21 August 2021 / Revised: 15 September 2021 / Accepted: 16 September 2021 / Published: 27 September 2021
(This article belongs to the Special Issue Characterization of Unconventional Petroleum Reservoirs)
Completion design for horizontal wells is typically performed using a geometric approach where the fracturing stages are evenly distributed along the lateral length of the well. However, this approach ignores the intrinsic vertical and horizontal heterogeneity of unconventional reservoirs, resulting in uneven production from hydraulic fracturing stages. An alternative approach is to selectively complete intervals with similar and superior reservoir quality (RQ) and completion quality (CQ), potentially leading to improved development efficiency. In the current study, along-well reservoir characterization is performed using data from a horizontal well completed in the Montney Formation in western Canada. Log-derived petrophysical and geomechanical properties, and laboratory analyses performed on drill cuttings, are integrated for the purpose of evaluating RQ and CQ variability along the well. For RQ, cutoffs were applied to the porosity (>4%), permeability (>0.0018 mD), and water saturation (<20%), whereas, for CQ, cutoffs were applied to rock strength (<160 Mpa), Young’s Modulus (60–65 GPa), and Poisson’s ratio (<0.26). Based on the observed heterogeneity in reservoir properties, the lateral length of the well can be subdivided into nine segments. Superior RQ and CQ intervals were found to be associated with predominantly (massive) porous siltstone facies; these intervals are regarded as the primary targets for stimulation. In contrast, relatively inferior RQ and CQ intervals were found to be associated with either dolomite-cemented facies or laminated siltstones. The methods developed and used in this study could be beneficial to Montney operators who aim to better predict and target sweet spots along horizontal wells; the approach could also be used in other unconventional plays. View Full-Text
Keywords: along-well characterization; drill cuttings; reservoir quality; completion quality; horizontal wells; Montney Formation along-well characterization; drill cuttings; reservoir quality; completion quality; horizontal wells; Montney Formation
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MDPI and ACS Style

Becerra, D.; Clarkson, C.R.; Ghanizadeh, A.; Pires de Lima, R.; Tabasinejad, F.; Zhang, Z.; Trivedi, A.; Shor, R. Evaluation of Reservoir Quality and Forecasted Production Variability along a Multi-Fractured Horizontal Well. Part 1: Reservoir Characterization. Energies 2021, 14, 6154. https://doi.org/10.3390/en14196154

AMA Style

Becerra D, Clarkson CR, Ghanizadeh A, Pires de Lima R, Tabasinejad F, Zhang Z, Trivedi A, Shor R. Evaluation of Reservoir Quality and Forecasted Production Variability along a Multi-Fractured Horizontal Well. Part 1: Reservoir Characterization. Energies. 2021; 14(19):6154. https://doi.org/10.3390/en14196154

Chicago/Turabian Style

Becerra, Daniela, Christopher R. Clarkson, Amin Ghanizadeh, Rafael Pires de Lima, Farshad Tabasinejad, Zhenzihao Zhang, Ajesh Trivedi, and Roman Shor. 2021. "Evaluation of Reservoir Quality and Forecasted Production Variability along a Multi-Fractured Horizontal Well. Part 1: Reservoir Characterization" Energies 14, no. 19: 6154. https://doi.org/10.3390/en14196154

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