The Effect of Temperature and Pressure on the Rock Mechanical Behaviour of the Whitby Mudstone Formation, UK

Lisanne Douma, M.E. Houben,, M.I.W. Primarini, Auke Barnhoorn

Research output: Contribution to conferenceAbstractScientific

1 Citation (Scopus)

Abstract

We studied the rock mechanical behaviour of the outcropping Whitby Mudstone Formation shales (Toarcian Age) under varying temperature and confining pressure conditions, focusing on strength and elastic moduli. We compared the rock mechanical properties of the Whitby shale to published data of time and depositional equivalent shales from Northern Europe and producing shales from the US. We performed uniaxial and triaxial tests in order to constrain the effect of temperature and pressure on the mechanical behaviour of the shale. We loaded the samples normal to the bedding plane under room humidity conditions. We performed uniaxial tests at room temperature and zero confining pressure, whereas we applied confining pressure in several steps up to 50 MPa and considered temperature values between 20-150°C during triaxial tests. Ultimate strength and elastic moduli are strongly influenced by mineralogy, temperature and pressure. An increase in temperature enhances the deformability, whereby the Young’s Modulus and ultimate strength decreases. With an increase in confining pressure, Young’s Modulus and ultimate strength increases, whereas the Poisson’s ratio decreases.
Original languageEnglish
Number of pages5
DOIs
Publication statusPublished - 2016
Event5th EAGE Shale Workshop: Quantifying Risk and Potential - Romano Palace Hotel, Catania, Italy
Duration: 2 May 20164 May 2016
Conference number: 5

Workshop

Workshop5th EAGE Shale Workshop
CountryItaly
CityCatania
Period2/05/164/05/16

Fingerprint Dive into the research topics of 'The Effect of Temperature and Pressure on the Rock Mechanical Behaviour of the Whitby Mudstone Formation, UK'. Together they form a unique fingerprint.

Cite this