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Quantitative Assessment of Rock Mechanical Properties on Formation Pressure in Deepwater Niger Delta
Subject area: Science,Engineering and Technology · Area of research: Drilling Engineering
DOI: https://doi.org/10.64388/IREV9I6-1712706
Abstract
The relationship between deformative rock mechanical properties (Young modulus, shear modus, bulk modulus, and Poisson ratio) and pore pressure in Deepwater Niger Delta with the aim of improving pore pressure predictions was explored. The nature of trends existing between these properties and pore pressure was observed, and a sensitivity analysis to measure the strength of the relationship existing between these properties and pore pressure was performed. Furthermore, an XGBoost model was developed to predict pore pressure using the rock mechanical properties. This was compared with models of Eaton, Bowers, and Millers and showed superior performance with evaluation metrics with a percentage absolute average deviation of 5.43% and a mean absolute error of 253.95. This was followed by Eaton?s model with a percentage absolute average deviation of 39.36% and a mean absolute error of 1696.25. Bowers? model had a percentage absolute average deviation of 43.65% and a mean absolute error of 1719.66. Miller?s model had a percentage absolute average deviation of 72.40% and a mean absolute error of 2726.68. This study significantly advanced the understanding of how rock mechanical properties relates with pore pressure in Deepwater Niger Delta and developed a more efficient pore pressure prediction model using rock mechanical properties.
Keywords
Rock mechanical properties, Deepwater, Pore Pressure Prediction, Niger Delta
How to cite this paper
@article{1712706,
author = {Timi Ibuchi Olawuyi, Boniface A. Oriji, Emeka E. Okoro},
title = {Quantitative Assessment of Rock Mechanical Properties on Formation Pressure in Deepwater Niger Delta},
journal = {Iconic Research And Engineering Journals},
year = {2025},
volume = {9},
number = {6},
pages = {897-906},
issn = {2456-8880},
url = {https://www.irejournals.com/formatedpaper/1712706.pdf},
abstract = {The relationship between deformative rock mechanical properties (Young modulus, shear modus, bulk modulus, and Poisson ratio) and pore pressure in Deepwater Niger Delta with the aim of improving pore pressure predictions was explored. The nature of trends existing between these properties and pore pressure was observed, and a sensitivity analysis to measure the strength of the relationship existing between these properties and pore pressure was performed. Furthermore, an XGBoost model was developed to predict pore pressure using the rock mechanical properties. This was compared with models of Eaton, Bowers, and Millers and showed superior performance with evaluation metrics with a percentage absolute average deviation of 5.43% and a mean absolute error of 253.95. This was followed by Eaton?s model with a percentage absolute average deviation of 39.36% and a mean absolute error of 1696.25. Bowers? model had a percentage absolute average deviation of 43.65% and a mean absolute error of 1719.66. Miller?s model had a percentage absolute average deviation of 72.40% and a mean absolute error of 2726.68. This study significantly advanced the understanding of how rock mechanical properties relates with pore pressure in Deepwater Niger Delta and developed a more efficient pore pressure prediction model using rock mechanical properties.},
keywords = {Rock mechanical properties, Deepwater, Pore Pressure Prediction, Niger Delta},
month = {December},
doi = {https://doi.org/10.64388/IREV9I6-1712706}
}