USGS Methodology for Assessing Continuous Petroleum Resources
Open-File Report
2011-1167
By: Ronald R. Charpentier and Troy A. Cook
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Abstract
The U.S. Geological Survey (USGS) has developed a new quantitative methodology for assessing resources in continuous (unconventional) petroleum deposits. Continuous petroleum resources include shale gas, coalbed gas, and other oil and gas deposits in low-permeability ("tight") reservoirs. The methodology is based on an approach combining geologic understanding with well productivities. The methodology is probabilistic, with both input and output variables as probability distributions, and uses Monte Carlo simulation to calculate the estimates. The new methodology is an improvement of previous USGS methodologies in that it better accommodates the uncertainties in undrilled or minimally drilled deposits that must be assessed using analogs. The publication is a collection of PowerPoint slides with accompanying comments.
Suggested Citation
Charpentier, R., and Cook, T.A., 2011, USGS Methodology for Assessing Continuous Petroleum Resources: U.S. Geological Survey Open-File Report 2011-1167, ii, 73 p.;, https://doi.org/10.3133/ofr20111167.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | USGS Methodology for Assessing Continuous Petroleum Resources |
| Series title | Open-File Report |
| Series number | 2011-1167 |
| DOI | 10.3133/ofr20111167 |
| Year Published | 2011 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Central Energy Resources Science Center |
| Description | ii, 73 p.; |
| Online Only (Y/N) | Y |