Transient pressure analysis for vertical oil exploration wells: a case of Moga field

Abstract

Reservoir engineers use the transient pressure analyses to get certain parameters and variable factors on the reservoir’s physical properties, such as permeability thickness, which need highly sophisticated equipments, methods and procedures. The problem facing the exploration and production teams, with the discoveries of new fields, is the insufficiency of accurate and appropriate data to work with due to different sources of errors. The well-test analyst does the work without reliable set of data from the field, thus, resulting in many errors, which may consequently cause damage and unnecessary financial losses, as well as opportunity losses to the project. This paper analyzes and interprets the noisy production rate and pressure data with problematic mechanical damage using a deconvolution method. Deconvolution showed improvement in simulation results in detecting the boundaries. Also, high-risk area analysis with different methods being applied to get the best set of results needed for subsequent operations.