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- Title
Velocity-porosity and velocity-density relationship for shallow sediments in the Kerala-Konkan basin of western Indian margin.
- Authors
Ojha, Maheswar; Sain, Kalachand
- Abstract
During the expedition 01 of the National Gas Hydrate Program (NGHP), drilling and coring were carried out at one site in the Kerala-Konkan basin on the west cost of India to validate gas hydrate. Drilling/coring results show a homogenous sequence of oozes and explains that the reflector, which was identified as a bottom-simulating reflector (BSR) on seismic section, is mainly due to changes in formation density because of less clay content in carbonate-rich sediment. Downhole logs collected at this site are of good quality and have been used to establish empirical relationship between the P-wave velocity ( V), S-wave velocity ( V), density ( ρ) and porosity ( ϕ). The established relations show very good fit with high R value (>0.73), and can be used for further studies in this region. Well known existing empirical formulas between V, V, ρ and ϕ deviate significantly from our established relations.
- Subjects
KONKAN (India); INDIA; SEDIMENTS; GEOLOGICAL basins; SHEAR waves; P-waves (Seismology); GAS hydrates; SOIL porosity; SOIL density
- Publication
Journal of the Geological Society of India, 2014, Vol 84, Issue 2, p187
- ISSN
0016-7622
- Publication type
Article
- DOI
10.1007/s12594-014-0122-2