ÇAĞRILI KONUŞMALAR / KEYNOTES Invited Speeches ... - TPJD

Deconvolution and Its Applications to the Interpretation of Pressure Transient
Test Data
Mustafa Onur
İstanbul Technical University, Faculty of Mines, Department of Petroleum and Natural Gas
Engineering, İstanbul
Deconvolution provides the equivalent constant rate/pressure response of the well/reservoir
system affected by variable flow rates/pressures. Although applying deconvolution for well
test and production data analysis is an important challenge because deconvolution is an
ill-conditioned inverse problem in the presence of noise in pressure/rate measurements,
robust deconvolution algorithms have recently been developed in the literature. With the
implementation of permanent pressure and flow-rate measurement systems and the use of
recently developed deconvolution algorithms, the importance of deconvolution has increased
since it is now possible to analyze the well test/production data with respect to larger radius
of investigation and obtain more information regarding well/reservoir system. In other words,
by using deconvolution more information about the well/reservoir system, regarding reservoir
boundaries and oil and gas volumes supported by measured pressure and deconvolved data.
Such information is vital for making decisions for apprising the fields and reducing the overall
costs of the reservoir appraisal and development programs. In this work, I introduce the new
robust methods based on pressure and pressure-derivative data. Then, I demonstrate the use
of these methods with the interpretation of synthetic and real field pressure transient tests,
and finally present some guidelines for the effective use of these deconvolution methods in
interpretation of pressure transient tests.
Keywords: Pressure Transient, Interpretation, Deconvolution
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