Complex Reservoir Architecture Validated by Integrating Well-Testing Outcomes

Source: IPTC 17986
Fig. 1—Well 3 testing sequence. BU=buildup.

This work presents a real field example in which the integration of well-testing and geological interpretations increased the understanding of a complex, heterogeneous reservoir. An integrated study of both dynamic well-testing data and geological/seismic models was conducted to assess a very complex pressure response obtained from a production test conducted in an offshore oil well. The well-testing objectives were to improve reservoir characterization and to quantify the well productivity in a high-permeability oil-bearing sandstone formation.

Introduction

The target of the production test [drillstem test (DST)] is considered one of the more important reservoirs for the development of a field asset located in ultradeep water. Both the dimensions involved and the average petrophysical properties are expected to sustain quite good production performance.

A dedicated test giving good and reliable interpreted results was considered essential to assess the expectations concerning the reservoir productivity and extent, thus confirming the viability of the development project.

This article, written by Special Publications Editor Adam Wilson, contains highlights of paper IPTC 17986, “Complex Reservoir Architecture Validated by Integrating Well-Testing Outcomes,” by Eleonora Azzarone, SPE, Enzo Beretta, SPE, Sergio Salvadori, andPietro Bettazzoli, Eni, prepared for the 2014 International Petroleum Technology Conference, Kuala Lumpur, 10–12 December. The paper has not been peer reviewed.Copyright 2014 International Petroleum Technology Conference. Reproduced by permission.
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Complex Reservoir Architecture Validated by Integrating Well-Testing Outcomes

01 February 2016

Volume: 68 | Issue: 2

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