Experimental investigation on the influence of temperature on the mechanical properties of reservoir rocks

Araújo, R.G.S.; Sousa, J. L. A. O.; Bloch, M.

doi:10.1016/s1365-1609(97)00065-8

Cited by 29 publications

(15 citation statements)

References 1 publication

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“…1). Araújo et al (1997) observed an approximate 23 % decrease of E as temperature increased from 24 to 150°C for friable PbS under high-temperature treatment, while Meng et al (2006) proposed a linear decrease rule of E with temperature from 0 to 150°C for TlS based on regression analysis of testing data under high temperature.…”

Section: Elastic Modulusmentioning

confidence: 99%

“…It revealed that the normalized values of ultimate compressive strength decrease with increasing temperature from 500°C onwards, while increase with increasing confining pressure. Based on triaxial tests under high temperature, Araújo et al (1997) observed an average reduction of compressive strength by 22 % for friable PbS with temperature increasing from 24 to 80°C.…”

Section: Elastic Modulusmentioning

confidence: 99%

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Mechanical Properties of Sandstones Exposed to High Temperature

et al. 2015

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Section: Elastic Modulusmentioning

confidence: 99%

Section: Elastic Modulusmentioning

confidence: 99%

Mechanical Properties of Sandstones Exposed to High Temperature

et al. 2015

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“…plastic deformation, [14][15][16][17][18][19][20] and its elastic modulus decreased with the increase of temperature. 16 In addition to experimental studies, thermal damage model coupled by thermo-mechanical fields has been also presented to simulate the response of rock to coupling effect.…”

Section: Introductionmentioning

confidence: 98%

Elastic modulus evolution of triaxially stressed mudstone at high temperature up to 400°C

Feng

Zhang

Dong

et al. 2020

Energy Science & Engineering

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“…In previous literature, researchers have carried out work that examines the mechanical properties of rock after exposure to high temperatures, including the deformation process, failure criterion of rock under pressure, and thermal cracking, and provided constitutive equations and carried out rock damage characterization in response [8][9][10][11][12][13]. Many scholars have paid attention to the study of high-temperature rock damage [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Damage of Granite by Acoustic Emission after Cyclic Heating and Cooling with Circulating Water

et al. 2018

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Hot dry rock is developed by injecting cold water into high-temperature rock mass. At the same time, cold water is heated in contact with the rock mass. With the continuous influx of cold water, the surrounding rock will undergo a rapid cooling process, which results in several cycles of heating and cooling. However, there is little research on the influence of cycles of heating and cooling with circulating water on the mechanical properties of rock, which is of great importance to the stability of rock mass engineering in the process of energy development. In this paper, the effects of cyclic heating and cooling with circulating water on the damage of granite are studied using uniaxial compressive, Brazilian and acoustic emission (AE) tests. The results show that heat treatment temperature and number of cycles have important effects on the mechanical properties of granite as follows: (1) at the same treatment temperature, an increase in the number of cycles means that the distribution of physical and mechanical parameters of the granite show an almost exponential downward trend. The uniaxial compression of granite results in its transformation from brittle to plastic, and the failure mode changes from slipping of the shear surface to plastic failure. With increased cycles of heating and cooling with circulating water, the tensile strength of granite also decreases; temperature has an obvious influence on physical and mechanical parameters, cracking of samples, and plays a controlling role in the failure mode of samples. In addition, (2) at the same temperature, the heating and cooling numbers N have a significant influence on the AE distribution characteristics of the sample under uniaxial compression and the number of AE collisions, and the cumulative number of AE decreases with the increase of N. (3) The concepts of mechanical damage and high-temperature and cold-water shock damage during uniaxial compression of samples were proposed based on AE, and the damage equations were established respectively. The curve equations of damage value (D) and cycle numbers N after thermal shock damage of high temperature and cold water were overlaid. The cracking mechanism of high-temperature and cold water impact on granite was analyzed, and the thermal shock stress equation of high temperature and water cooling was established.

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Experimental investigation on the influence of temperature on the mechanical properties of reservoir rocks

Cited by 29 publications

References 1 publication

Mechanical Properties of Sandstones Exposed to High Temperature

Mechanical Properties of Sandstones Exposed to High Temperature

Elastic modulus evolution of triaxially stressed mudstone at high temperature up to 400°C

Experimental Study on the Damage of Granite by Acoustic Emission after Cyclic Heating and Cooling with Circulating Water

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