A NEW METHOD FOR INTERPRETING WELL TEST DATA IN FRACTURED RESERVOIRS: A DUAL POROSITY MODEL

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ADIBIFARD MEISAM; TABATABAEI NEJAD SEYYED ALIREZA; KHODAPANAH ELNAZ

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Journal: PETROLEUM RESEARCH Year:2015 | Volume:25 | Issue:82 Page(s): 118-131

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Title

A NEW METHOD FOR INTERPRETING WELL TEST DATA IN FRACTURED RESERVOIRS: A DUAL POROSITY MODEL

Author(s)

ADIBIFARD MEISAM | TABATABAEI NEJAD SEYYED ALIREZA | KHODAPANAH ELNAZ | Issue Writer Certificate

Keywords

FRACTURE PARAMETERSQ2

INCOMPLETE WELL TESTSQ2

TRANSITION ZONEQ2

BUILDUP TESTQ2

MATRIX PERMEABILITYQ2

Abstract

In this study, a new method is developed to estimate the FRACTURE PARAMETERS in fractured reservoirs. This method is used to interpret incomplete well test data and is applicable to both drawdown and BUILDUP TESTs. Using this method, the value of l/w ratio can be estimated for the drawdown test when the first straight line and an early TRANSITION ZONE are solely observed in the test data. Hence, there is no need to observe the inflection point in the semi-log plot of the pressure data. For BUILDUP TEST, however, the technique can be combined with previously published approaches to estimate separate values of l and w. The main assumption behind the new technique is employing the dual porosity model with pseudo-steady state interporosity flow to obtain the final solution; the final equation is achieved by approximating the pressure derivative data using the Taylor series. The permeability of the rock matrix can be estimated through new developed technique provided that sufficient fluid and rock data are available. For validation purposes, three different well test cases (two drawdown and one buildup) have been simulated using the Pansystem software. Moreover, a field case, adopted from the open literature, is used to test the accuracy of the developed technique over actual field data. The results revealed that the value of l/w estimated through the new technique has an insignificant difference with the input l/w values for simulation purposes.

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APA: Copy

ADIBIFARD, MEISAM, TABATABAEI NEJAD, SEYYED ALIREZA, & KHODAPANAH, ELNAZ. (2015). A NEW METHOD FOR INTERPRETING WELL TEST DATA IN FRACTURED RESERVOIRS: A DUAL POROSITY MODEL. PETROLEUM RESEARCH, 25(82), 118-131. SID. https://sid.ir/paper/115049/en

Vancouver: Copy

ADIBIFARD MEISAM, TABATABAEI NEJAD SEYYED ALIREZA, KHODAPANAH ELNAZ. A NEW METHOD FOR INTERPRETING WELL TEST DATA IN FRACTURED RESERVOIRS: A DUAL POROSITY MODEL. PETROLEUM RESEARCH[Internet]. 2015;25(82):118-131. Available from: https://sid.ir/paper/115049/en

IEEE: Copy

MEISAM ADIBIFARD, SEYYED ALIREZA TABATABAEI NEJAD, and ELNAZ KHODAPANAH, “A NEW METHOD FOR INTERPRETING WELL TEST DATA IN FRACTURED RESERVOIRS: A DUAL POROSITY MODEL,” PETROLEUM RESEARCH, vol. 25, no. 82, pp. 118–131, 2015, [Online]. Available: https://sid.ir/paper/115049/en

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