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==Empirical threshold for top seal failure== ...occurs is determined empirically by analyzing successes and failures. The empirical threshold varies from basin to basin. In a frontier setting, estimates of t

...chives.datapages.com/data/bulletns/1990-91/data/pg/0075/0007/0000/1145.htm Empirical prediction of porosity and permeability in sandstones]: AAPG Bulletin, vol. Reduced porosity can be predicted from empirical or statistical evaluation of porosity data for reservoir intervals with sim

...ng-reservoir-system-quality-and-performance_fig9-42.png|{{figure number|3}}Empirical ternary diagram for estimating height above free water, pore type (r<sub>35 The empirical ternary diagram in [[:file:predicting-reservoir-system-quality-and-performa

...bon compared with the prediction from measured [[displacement pressure]]s. Empirical studies are needed because simple, idealized laboratory experiments show si ...ey are either thin or lack [[lateral]] continuity.<ref name=ch10r6 /> More empirical studies are needed.

* Few empirical field studies compare the predicted and observed [[hydrocarbon column]] hei

...quantitative methods of risking fault seal properties have established an empirical relationship between the observed sealing behavior of faults and the inferr ...ning the SGR for known sealing and leaking faults in producing fields. The empirical threshold can then be used to assess prospects and plays and well as develo

==Empirical IPR equations== ...he equations, which in turn characterize the productivity of the well. The empirical formulas are the primary tools to quantify well productivity and to perform

...elds is a prerequisite for predicting seal behavior in untested prospects. Empirical studies have established patterns of seal behavior, identified seal-leak th

...proper application requires knowledge of its limitations. The equation was empirical in origin and therefore needs modification in rock–fluid combinations dif

The existence of microseepage is supported by a large body of empirical evidence.<ref name=ch18r30>Price, L. C., 1986, A critical overview and prop

In some places, an empirical relation can be established to predict pore pressure from well logs. [[:fil

...ttings do not yield the same value as those from cores, so they require an empirical correction factor that ranges from 15–250 psi.<ref name=ch10r78>Sneider,

* Empirical correlation of [[permeability]], [[porosity]], and pore throat radius<ref n

This empirical threshold provides an important tool for evaluating top seals. Prospects ca

...olumn heights: AAPG Bulletin, v. 87, no. 3, p. 397-413.</ref> estimate the empirical formula taking into account the across-fault pressure difference (AFPD) and ...h different parameters, Bretan, et al.<ref name=Bretanetal_2003 /> made an empirical formula so as to connect SGR and HCH. Because SGR has a benchmark with the

All of these efforts—gathering and integrating empirical data, computer simulation of geologic processes, and prediction of specific

...core analysis or by the approach through equations based on log analysis. Empirical equation that can be used is : Calculate compressibility rock cores in data analysis, it can be used Newman empirical equation:

# Use computer simulations based on empirical data to predict the geology—especially [[petroleum system]] elements—be

...near regression,'' or y-on-x regression. It leads to the development of an empirical straight-line relationship between the two variables and has the following

...nd of Amoco used mercury injection-capillary pressure curves to develop an empirical relationship among Φ, K_a, and pore throat radius (r). He tested

Variations on this equation as well as empirical relationships are common.<ref name=ch10r39 /><ref name=ch10r55>Matthews, W.

...e consuming.<ref name=Box_etal_1987>Box, G. E. P., and N. R. Draper, 1987, Empirical model building and response surfaces: New York, John Wiley, 669 p.</ref> Th

...ate porosity in uncompacted sandstones and hydrocarbon-bearing reservoirs. Empirical corrections to lessen this error can be implemented using the compaction fa The ''Raymer-Hunt-Gardner equation'' is an empirical approach developed from a statistical analysis of a database of sonic measu

...cementation exponent (''m'') and the product of a × ''R''_''w'' (empirical constant × formation water resistivity) and relates water saturation (''S' ...the cementation exponent) and the product (''a'' × ''R''_''w'') (empirical constant × formation water resistivity), as well as visually displaying wa

...tion method that accepted by the oil industry, at this level of knowledge, empirical approachment is the most suitable method of the field prediction. There is

...racteristics of the fractures, their distribution in three dimensions, and empirical models of fracture system genesis.<ref name=pt06r135>Stearns, D. W., and M. #* Application of observations to empirical models using data from steps 1 through 5<ref name=pt06r135 /><ref name=pt06

...core data, to predict permeability. It is important to realize that these empirical equations for permeability prediction should always be considered as ''loca

...h the heaviest composition (C4/C1 or C5/C1). Because gas ratio analysis is empirical in nature, it can sometimes prove inconclusive. However, the following “r

...Schmidt rock hammer. Rebound data measurements and other identification of empirical rock relationships are calculated for the relative rigidity using shear mod

...led the ''[[interval transit time]]'' or ''delta t'' (Δ''t''). A number of empirical relationships have been developed to relate compressional velocity to poros

Finally, based on empirical observations, there appears to be a relationship between producibility and

...ck]: AAPG Bulletin, v. 90, no. 7, p. 989–1002.</ref> criticized the use of empirical relationships for fluvial geometries in too prescriptive a manner. He sugge

An empirical value exceeding 100 mg oil/g TOC was used to identify potential reservoir i