Equipment for Measuring Pore Pressure in Rock Specimens Under Triaxial Load

2009 ◽  
pp. 3-3-16
Author(s):  
T L Neff
Keyword(s):  
Pore Pressure ◽  
Rock Specimens

scholarly journals Measurements of Electrical Resistivity of Rock Specimens under Confining and Pore Pressure Conditions

2005 ◽  
Vol 46 (4) ◽  
pp. 220-226 ◽  
Author(s):  
Weiren LIN ◽  
Tadanori GOTO ◽  
Toshiaki NAKAMURA ◽  
Hitoshi MIKADA
Keyword(s):  
Electrical Resistivity ◽  
Pore Pressure ◽  
Rock Specimens

A method to measure pores and fissures in geologic materials under S.E.M. by digital image processing

1978 ◽  
Vol 36 (1) ◽  
pp. 212-213
Author(s):  
L. Montoto ◽  
M. Montoto ◽  
A. Bel-Lan
Keyword(s):  
Image Processing ◽  
Optical Microscopy ◽  
Digital Image Processing ◽  
Digital Image ◽  
Digital Processing ◽  
Free Surfaces ◽  
Geologic Materials ◽  
Automatic Information ◽  
Detector Output ◽  
Rock Specimens

INTRODUCTION.- The physical properties of rock masses are greatly influenced by their internal discontinuities, like pores and fissures. So, these need to be measured as a basis for interpretation. To avoid the basic difficulties of measurement under optical microscopy and analogic image systems, the authors use S.E.M. and multiband digital image processing. In S.E.M., analog signal processing has been used to further image enhancement (1), but automatic information extraction can be achieved by simple digital processing of S.E.M. images (2). The use of multiband image would overcome difficulties such as artifacts introduced by the relative positions of sample and detector or the typicals encountered in optical microscopy.DIGITAL IMAGE PROCESSING.- The studied rock specimens were in the form of flat deformation-free surfaces observed under a Phillips SEM model 500. The SEM detector output signal was recorded in picture form in b&w negatives and digitized using a Perkin Elmer 1010 MP flat microdensitometer.

Successful Application of Customized Fluid Using Specialized Synthetic Polymer in High Pressured Wells to Mitigate Differential Stikcing Problems by Minimizing Pore Pressure Transmission

2014 ◽  
Author(s):  
Mohannad Sulaiman Al-Muhailan ◽  
Arun Rajagopalan ◽  
Al Aziz Khalid Al-Shayji ◽  
Prakash Balkrishna Jadhav ◽  
Faiz Ismail Khatib
Keyword(s):  
Pore Pressure ◽  
Synthetic Polymer ◽  
Pressure Transmission
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