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Mark P. Walsh
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Journal Articles

Fast Optimization of the Net Present Value of Unconventional Wells Using Rapid Rate-Transient Analysis

Leopoldo Matias Ruiz Maraggi, Mark P. Walsh, Larry W. Lake, Frank R. Male
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 29 (11): 6500–6515.
Paper Number: SPE-223593-PA
https://doi.org/10.2118/223593-PA
Published: 13 November 2024
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View article titled, Fast Optimization of the Net Present Value of Unconventional Wells Using Rapid Rate-Transient Analysis
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Proceedings Papers

Fast Optimization of the Net Present Value of Unconventional Wells Using Rapid RTA

Leopoldo Matias Ruiz Maraggi, Mark P. Walsh, Larry W. Lake, Frank R. Male
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4043501-MS
https://doi.org/10.15530/urtec-2024-4043501
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View Paper titled, Fast Optimization of the Net Present Value of Unconventional Wells Using Rapid RTA
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Journal Articles

A New Approach to Apply Decline-Curve Analysis for Tight-Oil Reservoirs Producing Under Variable Pressure Conditions

Leopoldo Matias Ruiz Maraggi, Mark P. Walsh, Larry W. Lake
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 29 (03): 1655–1671.
Paper Number: SPE-218016-PA
https://doi.org/10.2118/218016-PA
Published: 13 March 2024
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View article titled, A New Approach to Apply Decline-Curve Analysis for Tight-Oil Reservoirs Producing Under Variable Pressure Conditions
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Proceedings Papers

The Application of a New Variable Pressure Decline-Curve Analysis Technique to Unconventional Reservoirs in Argentina

Leopoldo M. Ruiz Maraggi, Fernando Tuero, Mark P. Walsh, Larry W. Lake
Paper presented at the SPE/AAPG/SEG Latin America Unconventional Resources Technology Conference, December 4–6, 2023
Paper Number: URTEC-2023-3968926-MS
https://doi.org/10.15530/urtec-2023-3968926
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View Paper titled, The Application of a New Variable Pressure Decline-Curve Analysis Technique to Unconventional Reservoirs in Argentina
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Proceedings Papers

A New Approach to Apply Decline-Curve Analysis for Tight-Oil Reservoirs Producing Under Variable Pressure Conditions

Leopoldo M. Ruiz Maraggi, Mark P. Walsh, Larry W. Lake
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 13–15, 2023
Paper Number: URTEC-3848106-MS
https://doi.org/10.15530/urtec-2023-3848106
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View Paper titled, A New Approach to Apply Decline-Curve Analysis for Tight-Oil Reservoirs Producing Under Variable Pressure Conditions
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Proceedings Papers

Bayesian Variable Pressure Decline-Curve Analysis for Shale Gas Wells

Leopoldo M. Ruiz Maraggi, Mark P. Walsh, Larry W. Lake, Frank R. Male
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 13–15, 2023
Paper Number: URTEC-3856826-MS
https://doi.org/10.15530/urtec-2023-3856826
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View Paper titled, Bayesian Variable Pressure Decline-Curve Analysis for Shale Gas Wells
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Journal Articles

Using Bayesian Leave-One-Out and Leave-Future-Out Cross-Validation to Evaluate the Performance of Rate-Time Models to Forecast Production of Tight-Oil Wells

Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh
Journal: SPE Reservoir Evaluation & Engineering
Publisher: Society of Petroleum Engineers (SPE)
SPE Res Eval & Eng 25 (04): 730–750.
Paper Number: SPE-209234-PA
https://doi.org/10.2118/209234-PA
Published: 16 November 2022
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View article titled, Using Bayesian Leave-One-Out and Leave-Future-Out Cross-Validation to Evaluate the Performance of Rate-Time Models to Forecast Production of Tight-Oil Wells
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Proceedings Papers

Deconvolution Overcomes the Limitations of Rate Normalization and Material Balance Time in Rate-Transient Analysis of Unconventional Reservoirs

Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh
Paper presented at the SPE Canadian Energy Technology Conference, March 16–17, 2022
Paper Number: SPE-208948-MS
https://doi.org/10.2118/208948-MS
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View Paper titled, Deconvolution Overcomes the Limitations of Rate Normalization and Material Balance Time in Rate-Transient Analysis of Unconventional Reservoirs
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Proceedings Papers

Rate-Pseudopressure Deconvolution Enhances Rate-Time Models Production History Matches and Forecasts of Shale Gas Wells

Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh
Paper presented at the SPE Canadian Energy Technology Conference, March 16–17, 2022
Paper Number: SPE-208967-MS
https://doi.org/10.2118/208967-MS
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View Paper titled, Rate-Pseudopressure Deconvolution Enhances Rate-Time Models Production History Matches and Forecasts of Shale Gas Wells
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Proceedings Papers

Averaging Predictions of Rate-Time Models Using Bayesian Leave-Future-Out Cross-Validation and the Bayesian Bootstrap in Probabilistic Unconventional Production Forecasting

Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh
Paper presented at the SPE/AAPG/SEG Asia Pacific Unconventional Resources Technology Conference, November 16–18, 2021
Paper Number: URTEC-208335-MS
https://doi.org/10.15530/AP-URTEC-2021-208335
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View Paper titled, Averaging Predictions of Rate-Time Models Using Bayesian Leave-Future-Out Cross-Validation and the Bayesian Bootstrap in Probabilistic Unconventional Production Forecasting
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Proceedings Papers

Assessment of Rate Normalization and Pressure Deconvolution Techniques to History-Match and Forecast Production of Tight-Oil Reservoirs Using a Physics-Based Rate-Time Model

Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh
Paper presented at the SPE/AAPG/SEG Asia Pacific Unconventional Resources Technology Conference, November 16–18, 2021
Paper Number: URTEC-208352-MS
https://doi.org/10.15530/AP-URTEC-2021-208352
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View Paper titled, Assessment of Rate Normalization and Pressure Deconvolution Techniques to History-Match and Forecast Production of Tight-Oil Reservoirs Using a Physics-Based Rate-Time Model
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Proceedings Papers

Bayesian Predictive Performance Assessment of Rate-Time Models for Unconventional Production Forecasting

Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh
Paper presented at the SPE Europec featured at 82nd EAGE Conference and Exhibition, October 18–21, 2021
Paper Number: SPE-205151-MS
https://doi.org/10.2118/205151-MS
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View Paper titled, Bayesian Predictive Performance Assessment of Rate-Time Models for Unconventional Production Forecasting
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Proceedings Papers

Using Bayesian Leave-One-Out and Leave-Future-Out Cross-Validation to Evaluate the Performance of Rate-Time Models to Forecast Production of Tight-Oil Wells

Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5020-MS
https://doi.org/10.15530/urtec-2021-5020
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View Paper titled, Using Bayesian Leave-One-Out and Leave-Future-Out Cross-Validation to Evaluate the Performance of Rate-Time Models to Forecast Production of Tight-Oil Wells
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Proceedings Papers

Deconvolution of Time-Varying Bottomhole Pressure Improves Rate-Time Models History Matches and Forecasts of Tight-Oil Wells Production

Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5278-MS
https://doi.org/10.15530/urtec-2021-5278
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View Paper titled, Deconvolution of Time-Varying Bottomhole Pressure Improves Rate-Time Models History Matches and Forecasts of Tight-Oil Wells Production
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Proceedings Papers

A Bayesian Framework for Addressing the Uncertainty in Production Forecasts of Tight Oil Reservoirs Using a Physics-Based Two-Phase Flow Model

Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh
Paper presented at the SPE/AAPG/SEG Latin America Unconventional Resources Technology Conference, November 16–18, 2020
Paper Number: URTEC-2020-10480-MS
https://doi.org/10.15530/urtec-2020-10480
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View Paper titled, A Bayesian Framework for Addressing the Uncertainty in Production Forecasts of Tight Oil Reservoirs Using a Physics-Based Two-Phase Flow Model
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Proceedings Papers

A Two-Phase Non-Linear One-Dimensional Flow Model for Reserves Estimation in Tight Oil and Gas Condensate Reservoirs Using Scaling Principles

Leopoldo M. Ruiz Maraggi, Larry W. Lake, Mark P. Walsh
Paper presented at the SPE Latin American and Caribbean Petroleum Engineering Conference, July 27–31, 2020
Paper Number: SPE-199032-MS
https://doi.org/10.2118/199032-MS
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View Paper titled, A Two-Phase Non-Linear One-Dimensional Flow Model for Reserves Estimation in Tight Oil and Gas Condensate Reservoirs Using Scaling Principles
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Book Chapter

Oil Reservoir Primary Drive Mechanisms

Series: Petroleum Engineering Handbook
Publisher: Society of Petroleum Engineers
Published: 01 January 2007
10.2118/9781555631208-ch09
EISBN: 978-1-55563-335-6
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Proceedings Papers

Effect of Pressure Uncertainty on Material-Balance Plots

Mark P. Walsh
Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–6, 1999
Paper Number: SPE-56691-MS
https://doi.org/10.2118/56691-MS
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View Paper titled, Effect of Pressure Uncertainty on Material-Balance Plots
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Journal Articles

A Description of Chemical Precipitation Mechanisms and Their Role in Formation Damage During Stimulation by Hydrofluoric Acid

Mark P. Walsh, Larry W. Lake, Robert S. Schechter
Journal: Journal of Petroleum Technology
Publisher: Society of Petroleum Engineers (SPE)
J Pet Technol 34 (09): 2097–2112.
Paper Number: SPE-10625-PA
https://doi.org/10.2118/10625-PA
Published: 01 September 1982
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View article titled, A Description of Chemical Precipitation Mechanisms and Their Role in Formation Damage During Stimulation by Hydrofluoric Acid
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