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The net-to-gross ratio, typically estimated from analogues and wireline logs, is used to calculate the proportion of the sedimentary packages that contains reservoir rocks. The bulk rock volume multiplied by the net-to-gross ratio gives the net rock volume of the reservoir.
Pay (geology) Pay is an expression used in hydrocarbon mining. It denotes a portion of a reservoir that contains economically recoverable hydrocarbons. The term derives from the possibility of "paying" an income surpassing the costs. Equivalent terms are pay sand or pay zone. Overall interval in which pay volumes occur is the gross pay; smaller ...
Net reserve Part of net sand that has the minimum reservoir qualities; i.e. minimum porosity and permeability values. [5] Net/gross ratio (N/G) Proportion of the GRV formed by the reservoir rock (range is 0 to 1) Porosity Percentage of the net reservoir rock occupied by pores (typically 5-35%) Hydrocarbon saturation (Sh)
Gross Reservoir, located in Boulder County, Colorado, is owned and operated by Denver Water. Completed in 1954, the reservoir has a surface area of 440 acres (180 ha), and the spillway sits at 7,225 feet (2,202 m) elevation. [1] The reservoir is undergoing an expansion project. The reservoir receives water from South Boulder Creek and the ...
Reservoir simulation is an area of reservoir engineering in which computer models are used to predict the flow of fluids (typically, oil, water, and gas) through porous media. The amount of oil & gas recoverable from a conventional reservoir is assessed by accurately characterising the static recoverable volumes and history matching that to ...
Proven reserves are a subset of producible reserves. Proven reserves (also called measured reserves, 1P, and reserves) is a measure of fossil fuel energy reserves, such as oil and gas reserves and coal reserves. It is defined as the " [q]uantity of energy sources estimated with reasonable certainty, from the analysis of geologic and engineering ...
The reservoir is high porosity (33%), net to gross pay (90%) and with ultra-high apparent horizontal permeabilities approaching 50 Darcies based on flow-test measurements, but consistent with unconsolidated sand. Appraisal History
The largest reservoir entirely contained in Colorado is Blue Mesa Reservoir, with a capacity of 829,500 acre⋅ft (1.0 billion m 3). The total storage of the reservoirs on this list is 3,804,458 acre⋅ft (4.7 billion m 3), although not all is allocated for use by Colorado.