The Elastic Properties of Rocks: A Correlation of Theory and Experiment

Ide, John M.

doi:10.1073/pnas.22.8.482

Cited by 58 publications

(2 citation statements)

References 3 publications

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“…The values of primary and secondary wave velocity and the density of the specimen are used to calculate these mechanical rock parameters. It is important to note that the dynamic moduli of the rock are different from the static moduli due to some assumptions before any calculation, such as homogeneous, isotropic and perfect elastic of the rock being studied, which is not always true in most cases [13]. The dynamic moduli of fine-grained and igneous rocks, as well as sedimentary rocks are higher than static moduli, including Young's modulus, shear modulus, and Poisson's ratio [14].…”

Section: Methodsmentioning

confidence: 99%

Drilling Mud Influence on Sandstone Poroelastic Parameters

Knez

Rajaoalison

Nkunzi

2022

jge

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The most critical challenge faced during drilling operations is related to the stability of the well. Additionally, drilling mud plays a crucial role in wellbore stability, as one of its main uses is to support the wellbore wall during the drilling operation. However, ignorance of the effects of drilling mud on the mechanical properties of rock formation can also lead to well failure. The stability of the wellbore is also influenced by the pore pressure during the drilling process. The analysis of changes in rock poroelastic parameters after drilling mud saturation was found to be a useful research regarding the above mentioned. Therefore, the measurement of the dynamic Young’s modulus, Poisson’s ratio and Biot’s coefficient of sandstone samples was carried out to determine their trends of variations with confining pressure in different conditions such as dry, water and drilling mud filtrate saturation. The findings indicate that both the dynamic Young modulus and the Poisson’s ratio of the sandstone rock increased after saturation with water and drilling mud filtrate, while the Biot’s coefficient was reduced. Furthermore, the velocity of the P wave, the dynamic Young modulus and the dynamic Poisson ratio of the sandstone rock were proportional to the confining pressure, while the Biot’s coefficient were inversely proportional to the confining pressure. The results imply that the effective stress calculation can be influenced by changes in poroelastic parameters established from geophysical measurements, and risk management of wellbore stability stability was increased.

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Section: Methodsmentioning

confidence: 99%

Drilling Mud Influence on Sandstone Poroelastic Parameters

Knez

Rajaoalison

Nkunzi

2022

jge

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“…K=Bulk modulus=16.7xlO n dynes/cm 2 (Zisman, 1933). G=Rigidity modulus=8.38xlO n dynes/cm2 (Ide, 1936). K=thermal diffusivity=0.181 cmVsec (Ingersoll and others, 1948).…”

Section: Behavior Of a Model Meteorite Body In A Desert Region Distribution Of Temperature And Thermal Stressmentioning

confidence: 99%

The disintegration of the Wolf Creek meteorite and the formation of pecoraite, the nickel analog of clinochrysotile

Faust¹,

Fahey²,

Mason³

et al. 1973

Professional Paper

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Introduction 107 Acknowledgments 107 Pecoraite 107 Preparation of sample 107 Physical and optical properties 108 Crystallographic studies 108 Electron-microscopic examination 108 X-ray powder diffraction studies 108 Geometrical relations of the curved sheets of pecoraite to the cylindrical structure of clinochry sotile 112 Calculation of tube radii 112 Interpretation of diffraction effects 112 Interpretation of tube morphology 116 Chemical properties -i ig Pyrognostics i ig Chemical analysis and composition 117 Microprobe analysis us Studies on pecoraite and related synthetic phases in the system H2O-NiO-SiO2

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Dynamic properties of hardened paste, mortar and concrete

Swamy

Rigby

1971

Mat. Constr.

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The Elastic Properties of Rocks: A Correlation of Theory and Experiment

Cited by 58 publications

References 3 publications

Drilling Mud Influence on Sandstone Poroelastic Parameters

Drilling Mud Influence on Sandstone Poroelastic Parameters

The disintegration of the Wolf Creek meteorite and the formation of pecoraite, the nickel analog of clinochrysotile

Dynamic properties of hardened paste, mortar and concrete

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