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This document lays the root for settling on the gasoline and oil assets which are realistically on hand whilst exploration and creation expenses, infrastructure and transporation charges, and enviromental affects are thought of.
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Extra info for Assessing Gas and Oil Resources in the Intermountain West Review of Methods and Framework for a New Approach
Geological Survey 12 assessments and, in some cases, the USGS assessments were used. Adjustments were made where it was felt the resource estimates were inconsistent with more recent trends. However, no detailed survey of operators or other analytical method was used for the 1999 study. S. Geological Survey defined two types of nonconventional deposits: (1) tight sandstone, shale, and chalk and (2) coalbed methane. The methodology to assess tight sandstone, shale, and chalk followed a four-step process of mathematical modeling that incorporated no explicit consideration of technological improvements or economics.
However, the National Petroleum Council cost estimates are regional averages based upon existing wells, the majority of which are in conventional deposits. These estimates may underestimate the real costs of developing Rocky Mountain gas and oil. To account for the higher costs associated with nonconventional formations, the Hydrocarbon Supply Model includes an additional stimulation cost for low-permeability wells. In addition, the Joint Association Survey includes estimates for coalbed methane drilling costs.
2) and not subject to access restrictions. In addition, the Greater Green River Basin study includes only federal lands in the resource base, despite the fact that over 25 percent of the gas in the basin lies under non-federal lands, which are not subject to access restrictions. • Account for Stipulation Exemptions Federal land management agencies determine which stipulations apply to a given lease on a case-by-case basis and typically record exemption requests and grants. The proportion of stipulations that are exempted can therefore be considered when estimating their impact on access to gas and oil resources in the Rockies.