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Search Petrowiki: Resource classification
...quency (which varies from 0 to 110 Hz). (This figure was modeled after one in Radovich * Fig. 1.5-Classification of attribute types. Attributes can be point-based along a given time slice or horizon, or they can ...ified wavelets can resemble a map of the geologic feature being sought[46] (see Fig. 1.15), and the classification is often referred to a "seismic facies" ...classification. Because this method tends to compare relative amplitudes of features within a wavelet packet (side...
Reservoir geophysics, in contrast to exploration and development geophysics, is a relatively new field. Rather than being limited to assisting in the identification and delineation of prospects, geophysics is now increasingly being used for the characterization of the internal geometry and quality of reservoirs themselves and is often used as a means of monitoring reservoir changes between wells during production. Advances in the reliability of seismic observations and in methods for interpreting these observations in terms of reservoir properties have, together with economic considerations, provided the driving forces for the development of reservoir geophysics. The chapter on Fundamentals of Geophysics in the Reservoir Engineering and Petrophysics section of thisHandbook addresses the concepts used in seismic studies and is a useful introduction to the general topic. This chapter expands on the applications of geophysical technologies to reservoir characterization and monitoring for improved production.
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- Geology > Geological Subdiscipline > Geomechanics (1.00)
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- Geology > Geological Subdiscipline > Economic Geology > Petroleum Geology (0.67)
- Geology > Rock Type > Sedimentary Rock > Clastic Rock (0.67)
- South America > Brazil > Campos Basin (0.99)
- Oceania > Australia > Western Australia > North West Shelf > Carnarvon Basin > Carnarvon Basin > Dampier Basin > Rankin Platform > Greater Gorgon Development Area > Block WA-268-P > Greater Gorgon Field > Gorgon Field (0.99)
- Oceania > Australia > Western Australia > North West Shelf > Carnarvon Basin > Carnarvon Basin > Carnarvon Basin > Rankin Platform > Greater Gorgon Development Area > Block WA-268-P > Greater Gorgon Field > Gorgon Field (0.99)
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...mprises a small fraction of hydrocarbons in sedimentary basins.Table 5.1 shows relative hydrocarbon resource size. Second, as technology evolves, other energy sources (ethanol, hydrogen cycle) will displace o...embled from its elements, given a sufficiently high commodity price. To put the available heavy-oil resource into context, in Canada alone it is so large ( 400 109 m3) that, at a U.S. and Canadian consumpti...rs if the overall extraction efficiency is approximately 30%. * Table 5.1--Relative Hydrocarbon Resource Size The claim that the world is irresponsible in rapidly consuming irreplaceable resources ignore...
Heavy oil is defined as liquid petroleum of less than 20 API gravity or more than 200 cp viscosity at reservoir conditions. No explicit differentiation is made between heavy oil and oil sands (tar sands), although the criteria of less than 12 API gravity and greater than 10,000 cp are sometimes used to define oil sands.[1][2][3][4] The oil in oil sands is an immobile fluid under existing reservoir conditions, and heavy oils are somewhat mobile fluids under naturally existing pressure gradients. Unconsolidated sandstones (UCSS) are sandstones (or sands) that possess no true tensile strength arising from grain-to-grain mineral cementation. Before 1985, heavy-oil production was based largely on thermal stimulation, ฮT, to reduce viscosity and large pressure drops, ฮp, to induce flow.
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... be the greatest, the intermediate, or the least principal stress. In 1924, Anderson[2] developed a classification scheme to describe these three possibilities, based on the type of faulting that would occur in eac...
In the early years of oil drilling and production, wells were primarily drilled on land to moderate depths and with relatively minor horizontal offsets, and an empirical understanding of the impact of geological forces and Earth material properties on required drilling practice was developed by region. Successful practices were defined by trial and (sometimes costly and spectacular) error. Once local conditions were understood, it then became possible to drill new wells with a sufficient degree of confidence to guarantee the safety and economic success of further field developments. However, techniques that were successful in one field were not necessarily successful in other fields, and, therefore, the trial-and-error learning process often had to be repeated. Because wells have become more expensive and complex, both in terms of well geometry (reach and length) and access to deep, high-temperature, high-pore-pressure, and high-stress regimes, it has become clear that the economic success of field developments can only be assured if geology and tectonics are understood and field activities are designed with that understanding. Furthermore, constraints on engineering practice based on environmental and societal requirements necessitate specially designed mud formulations and drilling techniques.
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- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Mudrock > Shale (0.30)
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- North America > United States > California > San Joaquin Basin (0.99)
- North America > United States > Alaska > Cook Inlet Basin > Hemlock Formation (0.99)
- Europe > Norway > North Sea > Northern North Sea > East Shetland Basin > License 120 > Block 34/8 > Visund Field > Ststfjord Formation (0.99)
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