S. Tanju Obut, Turgay Ertekin

Research output: Contribution to journalArticle

18 Scopus citations


A new well-test analysis technique that can be used in locating the flood-front position during secondary and/or tertiary recovery processes with the data taken on vertically fractured injection wells is described. In this new technique, the swept volume was idealized as an elliptic region with foci located at the tips of the fracture wings. The fluids flowing through the inner (swept-volume) and the outer (unswept-volume) regions were assumed to be slightly compressible, while the hydraulic diffusivity and mobility values for the inner and outer regions were considered to be different. The vertical fracture was treated as an infinite-conductivity fracture. The outer region is either of finite extent or extends to infinity. Furthermore, it is also assumed that the flood front does not have any width and assumes a stationary position during the testing period.

Original languageEnglish (US)
Pages (from-to)227-238
Number of pages12
JournalSPE Formation Evaluation
Issue number3
StatePublished - Sep 1 1987

All Science Journal Classification (ASJC) codes

  • Process Chemistry and Technology

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    Obut, S. T., & Ertekin, T. (1987). COMPOSITE SYSTEM SOLUTION IN ELLIPTIC FLOW GEOMETRY. SPE Formation Evaluation, 2(3), 227-238.