The average well defined herein may change significantly over time due to changes in technology, production practices, marketing strategies, decline curve model refinement, and a variety of other potentially variables.
Irregular drilling unit size, royalty rates, well numbers and/or acres in the drilling unit can dramatically change results.
Shale wells have great variability, across the state and even on the same well pad.
Model focuses on average production estimation and does not adjust for well spacing, length of horizontal lateral, soaking, reduced cluster spaced hydraulic fracturing stages or other technology/practice differences that change from energy company to energy company.
Based on available data, the model cannot distinguish between Upper Devonian, Middle Devonian, and Ordovician shale formations.
Model is based on dry gas production only. Due to limited data availability, no equivalent calculations are included for wet, high BTU, condensate, or oil.
Wells excluded from the model
Data looks at broad averages and should be used for personal interest only. Specific well analysis may be available from a professional petroleum geologist or petroleum engineering firm.
The oil and gas related data used to calculate royalties and decline curve estimates originated from information reported to the state by oil and gas operators in 6-month increments. The Pennsylvania State University (PSU), Penn State Marcellus Center for Outreach and Research (MCOR), and the Penn State Extension Marcellus Education Team (MET) does not guarantee accuracy, precision, or completeness of the data.
Neither PSU, MCOR, and/or MET nor its staff members are liable or responsible for any damage or loss resulting from the use of these data or from inaccuracies contained in the data.
PSU, MCOR, and MET expressly disclaim any liability for errors or omissions related to the data contained within these reports. No warranty of any kind is given by PSU, MCOR, or MET with respect to the data contained within these reports.
We encourage you to report any problems, inconsistencies, or errors noted in using these data to the Marcellus Center for Outreach and Research (firstname.lastname@example.org) so that we can correct them and provide better service.
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