Analysis of pressure-transient tests for composite naturally fractured reservoirs

Journal Article · Sat Jun 01 00:00:00 EDT 1991 · SPE Formation Evaluation (Society of Petroleum Engineers); (United States)

DOI:https://doi.org/10.2118/19786-PA· OSTI ID:5741307

Kikani, J ^[1]; Walkup, Jr, G W ^[2]

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1. ECL-Bergeson Petroleum Technologies Inc. (US)
2. Caltex Pacific Indonesia (ID)

Naturally fractured reservoirs that undergo waterflooding or steam injection or that are acid-stimulated frequently can be modeled as a composite naturally fractured reservoir with matrix skin. A new analytical solution is presented in Laplace space for such a model that includes wellbore storage and skin. Design and analysis methods for pressure-transient tests based on the pressure derivative are also presented. Correlating parameters have been found that ease test design and analysis. Practical methods to determine the size of the inner zone are given. These methods are based on a scaled deviation time from the semilog straight line. In this paper a field example for an acidized well is presented.

• OSTI ID: 5741307
• Journal Information: SPE Formation Evaluation (Society of Petroleum Engineers); (United States), Journal Name: SPE Formation Evaluation (Society of Petroleum Engineers); (United States) Vol. 6:2; ISSN 0885-923X; ISSN SFEVE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
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ACIDIZATION
CALCULATION METHODS
COMPOSITE MATERIALS
ENGINEERING
EVALUATION
FLUID INJECTION
FORMATION DAMAGE
FRACTURED RESERVOIRS
GEOLOGIC MODELS
MATERIALS
PERFORMANCE TESTING
PRESSURE DROP
RESERVOIR ENGINEERING
RESERVOIR PRESSURE
STEAM INJECTION
STIMULATION
TESTING
TRANSIENTS
WATERFLOODING
WELL STIMULATION