Abstract
Evaporitic rocks are a typical example of sabkha at the coastal areas of Abu Dhabi, United Arab Emirates (UAE). This lithological succession plays an important role as sealing rock properties for the subsurface deeper hydrocarbon traps. In addition, these evaporites may also cause some engineering problems in the region. The P and S wave velocities estimation are essentially used in various fields of engineering to estimate the mechanical properties of rocks, since their measurement is reliable, easy, nondestructive, and economical. The present study aimed to compare P-wave and S-wave velocity measurements of 14 evaporitic rock blocks from two different locations and core samples as well as the calculated Vp/Vs ratio and dynamic Elastic Modulus (Ed), Shear Modulus (Gd) and Poisson's Ratio (νd). The results of these analyses indicate that the graphical relationships are comparable and the mean Vp and Vs for rock block samples ranges between 3.16–4.80 km/s and 1.58–2.42 km/s, respectively and the ranges for the core samples measurements as follows, 3.72–5.84 km/s and 1.66–3.22 km/s. The mean value of Vp is 4.22 km/s and standard deviation is 0.38 for rock block samples, and the mean value is 4.88 km/s and standard deviation is 0.58 for core samples. While, the mean value of Vs is 2.14 km/s and standard deviation is 0.20 for block samples, and 2.47 km/s and 0.43 for core samples. Moreover, the calculated dynamic constants of Ed, Gd and νd for rock blocks reflect a highly scattered range of 15.29–35.91 GPa, 5.73–13.51 GPa, and 0.32–0.33, respectively. While the core samples indicates the ranges of 16.85–60.94 GPa, 6.13–23.78 GPa and 0.26–0.39 for the calculated Ed, Gd and νd dynamic constants, respectively. This variation indicates the importance of direct measurement of the rock block samples, which may be more representive for the rock material, reducing the cost, effort and work complexity
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
