Pressure Build Up Analysis with Wellbore Phase Redistribution (Pressure Derivative Approach)

• Author(s): Omoniyi Omotayo Adewale
• Paper ID: 1713217
• Page: 182-193
• Published Date: 02-01-2026
• Published In: Iconic Research And Engineering Journals
• Publisher: IRE Journals
• e-ISSN: 2456-8880
• Volume/Issue: Volume 9 Issue 7 January-2026

Abstract

This study presents a new mathematical model which uses type curves, for the analysis of the effects of well bore phase redistribution on pressure build up tests, based on the principle of superposition. Well bore phase redistribution is shown to be a well bore storage effect and is incorporated mathematically into the diffusivity equation. The parameters that affect phase redistribution and gas humping are also documented. The derivative of the dimensionless well bore pressure was included in the type curves and in the data which makes the matching process much easier, and the method used in this study is validated with actual field data. This study permits analysis of many anomalous pressure buildup tests, which previously could not be analyzed quantitatively.

Keywords

Diffusivity equation, Mathematical model, Phase redistribution, Pressure buildup, Type curves

Citations

IRE Journals:
Omoniyi Omotayo Adewale "Pressure Build Up Analysis with Wellbore Phase Redistribution (Pressure Derivative Approach)" Iconic Research And Engineering Journals Volume 9 Issue 7 2026 Page 182-193 https://doi.org/10.64388/IREV9I7-1713217

IEEE:
Omoniyi Omotayo Adewale "Pressure Build Up Analysis with Wellbore Phase Redistribution (Pressure Derivative Approach)" Iconic Research And Engineering Journals, 9(7) https://doi.org/10.64388/IREV9I7-1713217