The Effect of Poisson's Ratio on Rock Properties

The Effect of Poisson's Ratio on Rock Properties J. Kumar J. Kumar Associated Regulatory Consultants, Inc. Search for other works by this author on: This Site Google Scholar Paper presented at the SPE Annual Fall Technical Conference and Exhibition, New Orleans, Louisiana, October 1976. Paper Number: SPE-6094-MS https://doi.org/10.2118/6094-MS Published: October 03 1976 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Get Permissions Search Site Citation Kumar, J. "The Effect of Poisson's Ratio on Rock Properties." Paper presented at the SPE Annual Fall Technical Conference and Exhibition, New Orleans, Louisiana, October 1976. doi: https://doi.org/10.2118/6094-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Annual Technical Conference and Exhibition Search Advanced Search American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc.AbstractThis paper presents various relationships between Poisson's ratio and other rock properties such as overburden pressure, bulk properties such as overburden pressure, bulk compressibility, Young's modulus, modulus of rigidity, compressive and tensile strength, porosity, density, wave velocities, modulus of porosity, density, wave velocities, modulus of resilience, modulus of rupture, fractures, drillability, and hardness. Thus, it points out the importance of Poisson's ratio in the understanding of some of the questions in rock mechanics.IntroductionThough the change in Poisson's ratio for various types of rocks is small in general, sometimes this change can be significant. Assumption of a constant value of Poisson's ratio in some cases may result in serious errors. Unfortunately, the importance of Poisson's ratio in the understanding of other rock properties is not fully realized and very little work, both theoretical and practical, has been done on this subject. This paper presents various relationships between Poisson's ratio and other rock properties such as overburden pressure, bulk properties such as overburden pressure, bulk compressibility, Young's modulus, modulus of rigidity, compressive and tensile strength, porosity, density, wave velocities, modulus of porosity, density, wave velocities, modulus of resilience, modulus of rupture, fractures, drillability, and hardness. Thus, it points out the importance of Poisson's ratio in the understanding of some of the questions in rock mechanics.POISSON'S RATIO POISSON'S RATIOWhen a force is applied to a body, at right angles to the force, a certain amount of lateral (transverse) expansion or contraction takes place. This phenomenon is shown in Fig. 1. In place. This phenomenon is shown in Fig. 1. In other words, it can be said that, if a solid body is subjected to an axial tension, it contracts laterally; on the other hand, if it is compressed, the material expands sidewise.So the definition of Poisson's ratio can be stated as the ratio of transverse strain to axial strain induced by unconfined axial deformation. Poisson's ratio can be expressed as(1)where the strains are caused by uniaxial strain only.Generally, values of Poisson's ratio vary between 0.25 and 0.35. Keywords: Reservoir Characterization, reservoir geomechanics, compressibility, wave velocity, drillability, Upstream Oil & Gas, strength, porosity, Wellbore Design, experimental value Subjects: Wellbore Design, Reservoir Characterization, Rock properties, Reservoir geomechanics This content is only available via PDF. 1976. Society of Petroleum Engineers You can access this article if you purchase or spend a download.