Physical characterization of core samples recovered from Gulf of Mexico

Tae Sup Yun, Guillermo A. Narsilio, J. Carlos Santamarina

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Seventy whole rounds from conventional cores obtained during drilling to ∼300 mbsf at Atwater Valley and Keathley Canyon in the Gulf of Mexico in April and May 2005 were tested to determine geophysical and geomechanical parameters (liquid and plastic limit, porosity, specific surface, pH, sediment electrical conductivity, P- and S-wave velocities and undrained shear strength). Available data from a pressure core are included as well. Results show that the sediments are high specific surface plastic clays, and exhibit pronounced time-dependent stiffness recovery. Strains during coring disturb specimens, yet, the water content retains the effective stress history and permits gaining stiffness and strength information from conventional cores. Remolding is exacerbated when gas expands upon decompression; the limited pressure core data available show the advantages of preserving the pore fluid pressure during core recovery and testing. Valuable parameters for sediment characterization and engineering analysis are extracted from the data using pre-existing soil models.

Original languageEnglish
Pages (from-to)893-900
Number of pages8
JournalMarine and Petroleum Geology
Volume23
Issue number9-10
DOIs
Publication statusPublished - 2006 Dec 1

Fingerprint

Gulf of Mexico
stiffness
plastic
sediments
sediment
fluid pressure
decompression
effective stress
plastics
pore pressure
shear strength
canyon
recovery
electrical conductivity
P-wave
wave velocity
S-wave
porosity
water content
drilling

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Geophysics
  • Geology
  • Economic Geology
  • Stratigraphy

Cite this

Yun, Tae Sup ; Narsilio, Guillermo A. ; Carlos Santamarina, J. / Physical characterization of core samples recovered from Gulf of Mexico. In: Marine and Petroleum Geology. 2006 ; Vol. 23, No. 9-10. pp. 893-900.
@article{7f27a56a70d843ffa4db0cf122b7369e,
title = "Physical characterization of core samples recovered from Gulf of Mexico",
abstract = "Seventy whole rounds from conventional cores obtained during drilling to ∼300 mbsf at Atwater Valley and Keathley Canyon in the Gulf of Mexico in April and May 2005 were tested to determine geophysical and geomechanical parameters (liquid and plastic limit, porosity, specific surface, pH, sediment electrical conductivity, P- and S-wave velocities and undrained shear strength). Available data from a pressure core are included as well. Results show that the sediments are high specific surface plastic clays, and exhibit pronounced time-dependent stiffness recovery. Strains during coring disturb specimens, yet, the water content retains the effective stress history and permits gaining stiffness and strength information from conventional cores. Remolding is exacerbated when gas expands upon decompression; the limited pressure core data available show the advantages of preserving the pore fluid pressure during core recovery and testing. Valuable parameters for sediment characterization and engineering analysis are extracted from the data using pre-existing soil models.",
author = "Yun, {Tae Sup} and Narsilio, {Guillermo A.} and {Carlos Santamarina}, J.",
year = "2006",
month = "12",
day = "1",
doi = "10.1016/j.marpetgeo.2006.08.002",
language = "English",
volume = "23",
pages = "893--900",
journal = "Marine and Petroleum Geology",
issn = "0264-8172",
publisher = "Elsevier BV",
number = "9-10",

}

Physical characterization of core samples recovered from Gulf of Mexico. / Yun, Tae Sup; Narsilio, Guillermo A.; Carlos Santamarina, J.

In: Marine and Petroleum Geology, Vol. 23, No. 9-10, 01.12.2006, p. 893-900.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Physical characterization of core samples recovered from Gulf of Mexico

AU - Yun, Tae Sup

AU - Narsilio, Guillermo A.

AU - Carlos Santamarina, J.

PY - 2006/12/1

Y1 - 2006/12/1

N2 - Seventy whole rounds from conventional cores obtained during drilling to ∼300 mbsf at Atwater Valley and Keathley Canyon in the Gulf of Mexico in April and May 2005 were tested to determine geophysical and geomechanical parameters (liquid and plastic limit, porosity, specific surface, pH, sediment electrical conductivity, P- and S-wave velocities and undrained shear strength). Available data from a pressure core are included as well. Results show that the sediments are high specific surface plastic clays, and exhibit pronounced time-dependent stiffness recovery. Strains during coring disturb specimens, yet, the water content retains the effective stress history and permits gaining stiffness and strength information from conventional cores. Remolding is exacerbated when gas expands upon decompression; the limited pressure core data available show the advantages of preserving the pore fluid pressure during core recovery and testing. Valuable parameters for sediment characterization and engineering analysis are extracted from the data using pre-existing soil models.

AB - Seventy whole rounds from conventional cores obtained during drilling to ∼300 mbsf at Atwater Valley and Keathley Canyon in the Gulf of Mexico in April and May 2005 were tested to determine geophysical and geomechanical parameters (liquid and plastic limit, porosity, specific surface, pH, sediment electrical conductivity, P- and S-wave velocities and undrained shear strength). Available data from a pressure core are included as well. Results show that the sediments are high specific surface plastic clays, and exhibit pronounced time-dependent stiffness recovery. Strains during coring disturb specimens, yet, the water content retains the effective stress history and permits gaining stiffness and strength information from conventional cores. Remolding is exacerbated when gas expands upon decompression; the limited pressure core data available show the advantages of preserving the pore fluid pressure during core recovery and testing. Valuable parameters for sediment characterization and engineering analysis are extracted from the data using pre-existing soil models.

UR - http://www.scopus.com/inward/record.url?scp=33751160154&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33751160154&partnerID=8YFLogxK

U2 - 10.1016/j.marpetgeo.2006.08.002

DO - 10.1016/j.marpetgeo.2006.08.002

M3 - Article

AN - SCOPUS:33751160154

VL - 23

SP - 893

EP - 900

JO - Marine and Petroleum Geology

JF - Marine and Petroleum Geology

SN - 0264-8172

IS - 9-10

ER -