Abstract
Investigation of the application of well tests and wireline formation testing (WFT) in Limoncocha field for reservoir characterization and reservoir management practices included case histories of updated well test interpretations and the evolution of WFT data from 1986 to 2015. Various workflows described in the literature were adapted and simplified according to the requirements of the field and our objectives.
We demonstrate with the use of case studies that well tests performed with downhole shut-in and annular communication were and will be dominated by changing wellbore storage. These tests were often misinterpreted as channel or radial composite reservoir models, leading to incorrect reservoir parameter estimation and, lately, in unsuccessful remedial work. Tests performed with downhole shut-in and no annular communication showed, in most cases, constant wellbore storage, a homogeneous radial model, and no boundaries.
Hydrodynamic flow zone identification from WFT data helped to identify those areas suitable for infill or reentry as well as to define the well trajectory to enhance production from a specific layer. Application to layer mapping is also shown.
Review of tests performed after remedial works helped to improve well analysis and current operational procedures. This has significantly increased the amount of information that one can extract from well test and WFT and, more importantly, the confidence in that information.
