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Title: Geomechanical testing of Bayou Choctaw 102B core for SPR analysis

Abstract

A laboratory testing program was developed to examine the short-term mechanical and time-dependent (creep) behavior of salt from the Bayou Choctaw Salt Dome. This report documents the test methodologies, and constitutive properties inferred from tests performed. These are used to extend our understanding of the mechanical behavior of the Bayou Choctaw domal salt and provide a data set for numerical analyses. The resulting information will be used to support numerical analyses of the current state of the Bayou Choctaw Dome as it relates to its crude oil storage function as part of the US Strategic Petroleum Reserve. Core obtained from Drill Hole BC-102B was tested under creep and quasi-static constant mean stress axisymmetric compression, and constant mean stress axisymmetric extension conditions. Creep tests were performed at 100 degrees Fahrenheit, and the axisymmetric tests were performed at ambient temperatures (72-78 degrees Fahrenheit). The testing performed indicates that the dilation criterion is pressure and stress state dependent. It was found that as the mean stress increases, the shear stress required to cause dilation increases. The results for this salt are reasonably consistent with those observed for other domal salts. Also it was observed that tests performed under extensile conditions required consistently lowermore » shear stress to cause dilation for the same mean stress, which is consistent with other domal salts. Young's moduli ranged from 3.95 x 10 6 to 8.51 x 10 6 psi with an average of 6.44 x 10 6 psi, with Poisson's ratios ranging from 0.10 to 0.43 with an average of 0.30. Creep testing indicates that the BC salt is intermediate in creep resistance when compared with other bedded and domal salt steady-state behavior.« less

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1204096
Report Number(s):
SAND2014-1459
503940
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Ingraham, Mathew Duffy, Broome, Scott Thomas, Bauer, Stephen J., Barrow, Perry Carl, and Flint, Gregory Mark. Geomechanical testing of Bayou Choctaw 102B core for SPR analysis. United States: N. p., 2014. Web. doi:10.2172/1204096.
Ingraham, Mathew Duffy, Broome, Scott Thomas, Bauer, Stephen J., Barrow, Perry Carl, & Flint, Gregory Mark. Geomechanical testing of Bayou Choctaw 102B core for SPR analysis. United States. https://doi.org/10.2172/1204096
Ingraham, Mathew Duffy, Broome, Scott Thomas, Bauer, Stephen J., Barrow, Perry Carl, and Flint, Gregory Mark. Sat . "Geomechanical testing of Bayou Choctaw 102B core for SPR analysis". United States. https://doi.org/10.2172/1204096. https://www.osti.gov/servlets/purl/1204096.
@article{osti_1204096,
title = {Geomechanical testing of Bayou Choctaw 102B core for SPR analysis},
author = {Ingraham, Mathew Duffy and Broome, Scott Thomas and Bauer, Stephen J. and Barrow, Perry Carl and Flint, Gregory Mark},
abstractNote = {A laboratory testing program was developed to examine the short-term mechanical and time-dependent (creep) behavior of salt from the Bayou Choctaw Salt Dome. This report documents the test methodologies, and constitutive properties inferred from tests performed. These are used to extend our understanding of the mechanical behavior of the Bayou Choctaw domal salt and provide a data set for numerical analyses. The resulting information will be used to support numerical analyses of the current state of the Bayou Choctaw Dome as it relates to its crude oil storage function as part of the US Strategic Petroleum Reserve. Core obtained from Drill Hole BC-102B was tested under creep and quasi-static constant mean stress axisymmetric compression, and constant mean stress axisymmetric extension conditions. Creep tests were performed at 100 degrees Fahrenheit, and the axisymmetric tests were performed at ambient temperatures (72-78 degrees Fahrenheit). The testing performed indicates that the dilation criterion is pressure and stress state dependent. It was found that as the mean stress increases, the shear stress required to cause dilation increases. The results for this salt are reasonably consistent with those observed for other domal salts. Also it was observed that tests performed under extensile conditions required consistently lower shear stress to cause dilation for the same mean stress, which is consistent with other domal salts. Young's moduli ranged from 3.95 x 106 to 8.51 x 106 psi with an average of 6.44 x 106 psi, with Poisson's ratios ranging from 0.10 to 0.43 with an average of 0.30. Creep testing indicates that the BC salt is intermediate in creep resistance when compared with other bedded and domal salt steady-state behavior.},
doi = {10.2172/1204096},
url = {https://www.osti.gov/biblio/1204096}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {2}
}