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Keywords: assumption
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Proceedings Papers
A New Theoretical Approach to the Mathematical Determination of the Relationship Between Cumulative Gas Production Versus Time in a Hydraulic Fracturing Unconventional Gas Well
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4244843-MS
... of specific scenarios. This study introduces a new theoretical and mathematical approach, the Lead Coefficient Theoretical Polynomial Model (EWO), derived from 11 physical and theoretical assumptions. This model formulates the trend equation for cumulative gas production versus production time...
Proceedings Papers
Using Machine Learning to Forecast Longer Duration Inventory Across Rockies Unconventional Plays
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4263701-MS
... trained an ensemble tree-based machine learning model to predict a monthly oil, gas, and water production time series. We then generated undrilled well sticks across each basin using recent spacing assumptions by formation and area (e.g., 10 wells per section across Niobrara formation in the Wattenberg...
Proceedings Papers
Analytical and Machine Learning Based Modifications to Unconventional Reservoir Simulation Models to Capture Near-Fracture Transient Effects
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4044074-MS
... it with the refined and analytical model shown in this work. We observed that when the coarse model fits within the assumptions of the single-phase pressure diffusivity model, both approaches give close results. We show that when rock compaction is included, the machine learning approach can capture the additional...
Proceedings Papers
Analyzing Midland Basin Well Performance and Future Outlook with Machine Learning
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4044737-MS
... forecasting tight spacing and parent-child scenarios. We utilized SHAP Values (SHapley Additive exPlanations) to analyze rock quality and performance trends over time in the historical dataset. Finally, we forecasted remaining inventory, employing a data-driven approach for spacing and development assumptions...
Proceedings Papers
Workflow to Quantify and Estimate Future Parent-Child Depletion Impact on Production Performance: An Empirical Approach
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4009115-MS
... conference shale gas geological subdiscipline beta seg unconventional resource technology conference alpha parent-child depletion spe hydraulic fracturing technology conference dataset urtec assumption interference pdi paper eur pcf URTeC: 4009115 Workflow to Quantify and Estimate Future...
Proceedings Papers
Application of a Sparse Hybrid Data-Driven and Physics Model in Unconventional Reservoirs for Production Forecasting
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4033921-MS
... assumptions. This study aims to develop reservoir models blending data-driven insights and physics-based constraints, utilizing routine data (rates and pressures) for pressure-aware production forecasting. We propose a novel approach for identifying rate-pressure relationships in unconventional reservoirs...
Proceedings Papers
A Machine Learning Approach to Basin Scale Inventory Forecasting and Development Planning that Accounts for Complex Well Interactions
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4036541-MS
... experimentation on the assumptions built into inventory planning. The result is a workflow for teams to explore an enormous number of realizations of various training data and feature sets in hours instead of months. With these tools, engineers can create accurate forecasts for future wells to better inform...
Proceedings Papers
Physics Informed Data-Driven Models for Discovery of Flow Physics and Forecasts in Unconventional Reservoirs
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 13–15, 2023
Paper Number: URTEC-3858897-MS
... not depend on mechanistic fractures or simulation model assumptions. The method also enables the identification of dominant flow regimes by using terms with the highest contributions instead of the usual line fitting procedure. Traditional methods like RTA tend to be interpretive and not suitable for field...
Proceedings Papers
Operational Application of Chow Pressure Group Methodology in the Midland Basin and Resulting Development Impact
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 13–15, 2023
Paper Number: URTEC-3855890-MS
... magnitude midland basin workflow online assumption codevelopment configuration well spacing zone 1 unconventional resource technology conference communication urtec drv gauge URTeC: 3855890 Operational Application of Chow Pressure Group Methodology in the Midland Basin and Resulting...
Proceedings Papers
Inverse Approach to Development Optimizations to Calibrate Assumptions About Trade-Off's Between Well Spacing and Frac’ Intensity
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 13–15, 2023
Paper Number: URTEC-3864891-MS
... closely tied to the business scale and success. One first order driver of financial results is the tradeoff between well density and completions intensity which involves assumptions about producing reservoir volume and completed reservoir volume. The complexity of unconventional reservoirs prevents...
Proceedings Papers
Understanding the Advantages and Disadvantages of Unconventional Well Stacking and Interference
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 13–15, 2023
Paper Number: URTEC-3866237-MS
... Abstract A general assumption in unconventional development is that horizontal wells in close vertical proximity tend to interfere with each other, causing the ultimate recovery of each well to be diminished to the extent that their stimulated rock volume (SRV) overlaps. However, recent...
Proceedings Papers
Optimizing Shale Infill Development with AI: Child Well Meta Models
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 13–15, 2023
Paper Number: URTEC-3870467-MS
... shale infill development county ensemble mudrock artificial intelligence accuracy zoback child well meta model rock type mudstone midland basin scenario variation hydraulic fracturing reservoir characterization prediction assumption forecast URTeC: 3870467 Optimizing Shale Infill...
Proceedings Papers
Multiphase Flowing Material Balance Without Relative Permeability Curves
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 20–22, 2022
Paper Number: URTEC-3718045-MS
... assumption reservoir entire reservoir permeability oil-ga ratio material balance time URTeC: 3718045 Multiphase Flowing Material Balance without Relative Permeability Curves Leslie G. Thompson*, Barry A. Ruddick, Whitson AS. Copyright 2022, Unconventional Resources Technology Conference (URTeC) DOI...
Proceedings Papers
Machine-Learning-Based Completion Optimization Workflow for Multi-Bench Development in the Midland Basin
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 20–22, 2022
Paper Number: URTEC-3719984-MS
..., zipper, or parent-child), and well spacing. The 2-year CUMO is then extended to a 30-year forecast using automated DCA, which enables the quick calculation of economic metrics with detailed economic assumptions so that the process mirrors actual field development planning. A genetic algorithm...
Proceedings Papers
Fractional Dimension RTA in Unconventional Wells: Application in Multi-Phase Analysis, History Matching, Forecasting and Interference Evaluation
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 20–22, 2022
Paper Number: URTEC-3724391-MS
... and interference evaluation is demonstrated with field examples. The traditional RTA methods for analyzing multi-stage fractured horizontal wells relies on some major assumptions including: 1) symmetrical planar hydraulic fractures, 2) formation linear flow because of planar fractures, and 3) single phase fluid...
Proceedings Papers
Measuring Fracture Induced Stress Shadow Using Fiber Optic Sensing and Its Implications on Fracture Stimulation Design
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 20–22, 2022
Paper Number: URTEC-3723054-MS
... decline will be compared to industry models to examine if often used assumptions, like linear elasticity, are reasonable. The induced stress shadow magnitude and it's fall-off rate will be discussed in terms of how it impacts fracture stimulation designs. Emphasis will be made on what fiber optic sensing...
Proceedings Papers
Integration of Gas-to-Oil Ratio into Production Decline Analysis to Predict Flow Regime Transition
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5102-MS
... of US oil production emanating from transient-flowing reservoirs drained with fully-bounded development wells, the longstanding use of late-life assumptions to accommodate the inevitable degradations in oil decline associated with the establishment of BDF have led to significant overestimation in oil...
Proceedings Papers
Coupling Physics-Based Full Field Hydraulic Model With Advanced Data Analytics: Evolution of Surface Pipeline Operations
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5028-MS
... management & disposal information management upstream oil & gas delivery point pipeline gathering system energy economics reservoir surveillance production logging unconventional resource economics well pad water cut assumption central facility production monitoring modeling...
Proceedings Papers
Left Behind: A Thrilling Post-Expulsion Adventure of Producible Hydrocarbons Remaining in Source Rocks
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5213-MS
... of the three methods carry unique assumptions there is variability in values between the three methods. complex reservoir shale gas thermally variability thermal maturity calculation producible hydrocarbon fraction structural geology correlation basin producible stooip reservoir...
Proceedings Papers
Shale Gas Development Potentials of the Jurassic Weald and Wessex Basins, South-East England: A Techno-Economic Evaluation
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5493-MS
... culled from relevant literature and gaps filled through guided assumptions about geological, engineering and economic parameters for the case. Model results were calibrated by multivariate sensitivity analysis to evaluate the impacts of changes in CAPEX, OPEX and gas prices on IRR and NPV. Permitting...
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