05.07.2009

Such as in analogous features within two different reservoirs

Territory that could be owned by another lessee and which is of the same or similar geological formation. Often information from a producing analogous reservoir or territory may also be used to conduct the analysis on the field in question

An analogous reservoir is one in the same geographic area that is formed by the same, or very similar, geological processes as a reservoir in question in so far as sedimentation, diagenesis, pressure, temperature, chemical and mechanical history and structure are concerned. It also has the same or similar geologic age, geologic features, and reservoir rock and fluid properties. Analogous features and characteristics can include approximate depth, pressure, temperature, reservoir drive mechanism, original fluid content, oil gravity, reservoir size, gross thickness, net-to-gross ratio, lithology, heterogeneity, porosity and permeability

An environment in which free oxygen is lacking or absent. Pertaining to systems, reactions or life processes of species, such as bacteria, in which atmospheric oxygen is not present or not required for survival

AVO analysis is a technique by which geophysicists attempt to determine thickness, porosity, density, velocity, lithology and fluid content of rocks. By doing ”Amplitude Versus Offset” evaluations on the raw unstacked seismic data it is possible to get a much better understanding of what the amplitude anomalies are telling

An abrupt increase in seismic amplitude that can indicate the presence of hydrocarbons, although such anomalies can also result from processing or other problems

Unit to measure electricity current

The depreciation, depletion, or charge-off to expense of intangible and tangible assets over a period of time. In the extractive industries, the term is most frequently applied to mean either (1) the periodic charge-off to expense of the costs associated with non producing mineral properties incurred prior to the time when they are developed and entered into production or (2) the systematic charge-off to expense of those costs of productive mineral properties (including tangible and intangible costs of prospecting, acquisition, exploration, and development) that had been initially capitalized (or deferred) prior to the time the properties entered into production, and thereafter are charged off as minerals are produced