Engineering Geological Mechanics Issues and Research Methods in Oil and Gas Exploration and Development

doi:10.11885/j.issn.1674-5086.2023.02.26.01

Abstract

Abstract: The role of engineering geomechanics research in complex oil and gas reservoir exploration and development, as well as in integrated geological engineering, is becoming increasingly important. However, there are still many issues that need to be explored, among which the most critical is the insufficient integration of the geological evolution and mechanics research of stratum rocks. By taking the rock mechanics properties that vary with geological evolution as the intrinsic connection, this approach integrates sedimentary facies, diagenesis, tectonic evolution, and engineering impacts to more closely combine geological and engineering factors in engineering geomechanics research. The new method formed emphasizes building regional three-dimensional geological structural models and assigning rock mechanics parameters across regional-well zone-single well scales according to the geological evolution characteristics of different rock types. After establishing regional rock mechanics phases, the parameter fields are inversely corrected by combining the interference mechanisms of well engineering, thereby optimizing and adjusting well engineering design, improving the accuracy of regional geological understanding and geological information prediction. This provides scientific research methods for stress evaluation, fracture distribution prediction, pore pressure system analysis, and productivity evaluation.

Key words: engineering geological mechanics, geological engineering integration, rock mechanics, structural modeling, geological evolution

CLC Number:

TE312

LI Gao, ZHANG Yi, YANG Xu. Engineering Geological Mechanics Issues and Research Methods in Oil and Gas Exploration and Development[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2023, 45(3): 72-80.

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