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Abstract:

The objective of this work is to determine the effect of permeability and porosity spatial variations on well test pressure response. Data from three wells and synthetic data are used. Field data consist of permeability and porosity as functions of depth and pressure transient test measurements from the same wells. To achieve the objective, two different tools are applied: statistical characterization of heterogeneities and a well test interpretation method. For the data: (1) permeabilities are represented by exponential distribution functions; (2) constant porosity estimates that fit measured transient pressures are almost equal to the statistical arithmetic mean, while constant permeability estimates lie between the median and the arithmetic mean; and (3) minor permeability variations cause important changes in pressure response.

Registro:

Documento: Artículo
Título:Statistical analysis of heterogeneities and their effect on build-up and drawdown tests
Autor:Savioli, G.B.; Bidner, M.S.; Jacovkis, P.M.
Filiación:Lab. de Ing. de Reservorios, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Inst. de Calcula y Dto. de Comp., Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Calculations; Computer simulation; Inverse problems; Mechanical permeability; Numerical analysis; Porosity; Pressure measurement; Probability density function; Statistical methods; Build up tests; Drawdown tests; Exponential distribution functions; Heterogeneities; Skin factor; Well test interpretation method; Well testing
Año:1996
Volumen:15
Número:1
Página de inicio:45
Página de fin:55
DOI: http://dx.doi.org/10.1016/0920-4105(95)00084-4
Título revista:Journal of Petroleum Science and Engineering
Título revista abreviado:J. Pet. Sci. Eng.
ISSN:09204105
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09204105_v15_n1_p45_Savioli

Referencias:

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Citas:

---------- APA ----------
Savioli, G.B., Bidner, M.S. & Jacovkis, P.M. (1996) . Statistical analysis of heterogeneities and their effect on build-up and drawdown tests. Journal of Petroleum Science and Engineering, 15(1), 45-55.
http://dx.doi.org/10.1016/0920-4105(95)00084-4
---------- CHICAGO ----------
Savioli, G.B., Bidner, M.S., Jacovkis, P.M. "Statistical analysis of heterogeneities and their effect on build-up and drawdown tests" . Journal of Petroleum Science and Engineering 15, no. 1 (1996) : 45-55.
http://dx.doi.org/10.1016/0920-4105(95)00084-4
---------- MLA ----------
Savioli, G.B., Bidner, M.S., Jacovkis, P.M. "Statistical analysis of heterogeneities and their effect on build-up and drawdown tests" . Journal of Petroleum Science and Engineering, vol. 15, no. 1, 1996, pp. 45-55.
http://dx.doi.org/10.1016/0920-4105(95)00084-4
---------- VANCOUVER ----------
Savioli, G.B., Bidner, M.S., Jacovkis, P.M. Statistical analysis of heterogeneities and their effect on build-up and drawdown tests. J. Pet. Sci. Eng. 1996;15(1):45-55.
http://dx.doi.org/10.1016/0920-4105(95)00084-4