JPT

 

Vol. 59 No. 2

February 2007

Well Testing

Explicit Deconvolution of Wellbore-Storage-Distorted Well-Test Data

The analysis and interpretation of wellbore-storage-distorted pressure-transient-test data remain significant challenges. Deconvolution (i.e., conversion of a variable-rate-distorted pressure profile into the pressure profile for an equivalent constant-rate-production sequence) has been in limited use as a conversion mechanism for the last 25 years. Unfortunately, standard deconvolution techniques require accurate measurements of flow rate and pressure at downhole (or sandface) conditions. While accurate pressure measurements are commonplace, the measurement of sandface flow rates is rare, essentially nonexistent in practice. An explicit (direct) deconvolution of wellbore-storage-distorted pressure-test data that uses only those pressure data was developed.

View a synopsis of SPE 103216 published in JPT

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 103216, "Explicit Deconvolu-tion of Wellbore-Storage-Distorted Well-Test Data," by O. Bahabanian, SPE, D. Ilk, SPE, N. Hosseinpour-Zonoozi, SPE, and T.A. Blasingame, SPE, Texas A&M U., prepared for the 2006 SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 24-27 September.

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