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Title: Construction of hexahedral finite element mesh capturing realistic geometries of a petroleum reserve

Abstract

The three-dimensional finite element mesh capturing realistic geometries of the Bayou Choctaw site has been constructed using the sonar and seismic survey data obtained from the field. The mesh consists of hexahedral elements because the salt constitutive model is coded using hexahedral elements. Various ideas and techniques to construct finite element mesh capturing artificially and naturally formed geometries are provided. The techniques to reduce the number of elements as much as possible to save on computer run time while maintaining the computational accuracy is also introduced. The steps and methodologies could be applied to construct the meshes of Big Hill, Bryan Mound, and West Hackberry strategic petroleum reserve sites. The methodology could be applied to the complicated shape masses for various civil and geological structures.

Authors:
 [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:
1399501
Report Number(s):
SAND-2017-1699J
Journal ID: ISSN 0168-874X; PII: S0168874X17302032
Grant/Contract Number:
AC04-94AL85000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Finite Elements in Analysis and Design
Additional Journal Information:
Journal Volume: 135; Journal ID: ISSN 0168-874X
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Park, Byoung Yoon, Roberts, Barry L., and Sobolik, Steven R. Construction of hexahedral finite element mesh capturing realistic geometries of a petroleum reserve. United States: N. p., 2017. Web. doi:10.1016/j.finel.2017.07.007.
Park, Byoung Yoon, Roberts, Barry L., & Sobolik, Steven R. Construction of hexahedral finite element mesh capturing realistic geometries of a petroleum reserve. United States. doi:10.1016/j.finel.2017.07.007.
Park, Byoung Yoon, Roberts, Barry L., and Sobolik, Steven R. 2017. "Construction of hexahedral finite element mesh capturing realistic geometries of a petroleum reserve". United States. doi:10.1016/j.finel.2017.07.007. https://www.osti.gov/servlets/purl/1399501.
@article{osti_1399501,
title = {Construction of hexahedral finite element mesh capturing realistic geometries of a petroleum reserve},
author = {Park, Byoung Yoon and Roberts, Barry L. and Sobolik, Steven R.},
abstractNote = {The three-dimensional finite element mesh capturing realistic geometries of the Bayou Choctaw site has been constructed using the sonar and seismic survey data obtained from the field. The mesh consists of hexahedral elements because the salt constitutive model is coded using hexahedral elements. Various ideas and techniques to construct finite element mesh capturing artificially and naturally formed geometries are provided. The techniques to reduce the number of elements as much as possible to save on computer run time while maintaining the computational accuracy is also introduced. The steps and methodologies could be applied to construct the meshes of Big Hill, Bryan Mound, and West Hackberry strategic petroleum reserve sites. The methodology could be applied to the complicated shape masses for various civil and geological structures.},
doi = {10.1016/j.finel.2017.07.007},
journal = {Finite Elements in Analysis and Design},
number = ,
volume = 135,
place = {United States},
year = 2017,
month = 7
}

Journal Article:
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  • Abstract not provided.
  • The three-dimensional finite element mesh capturing realistic geometries of Bayou Choctaw site has been constructed using the sonar and seismic survey data obtained from the field. The mesh is consisting of hexahedral elements because the salt constitutive model is coded using hexahedral elements. Various ideas and techniques to construct finite element mesh capturing artificially and naturally formed geometries are provided. The techniques to reduce the number of elements as much as possible to save on computer run time with maintaining the computational accuracy is also introduced. The steps and methodologies could be applied to construct the meshes of Big Hill,more » Bryan Mound, and West Hackberry strategic petroleum reserve sites. The methodology could be applied to the complicated shape masses for not only various civil and geological structures but also biological applications such as artificial limbs.« less
  • A finite element computer program, developed previously to predict the creep response of bedded rock salt, has also been used to successfully predict the creep closure rates of several caverns using an approximation of the cavern geometry and material properties from the site. The caverns at Bryan Mound, Texas have been analyzed with this program by approximating each with a two-dimensional axisymmetric finite element mesh. Initial leaching and thermal effects were treated in an approximate manner. An element deletion technique was used to simulate the leaching which occurs when oil is withdrawn and replaced with fresh water. Each cavern wasmore » analyzed for thirty years and an indication of the long-term stability and volume change was obtained. This information will be used in the formulation of operating procedures for the cavern.« less
  • A techniques for coarsening a hexahedral mesh is described. The technique includes identifying a coarsening region within a hexahedral mesh to be coarsened. A boundary sheet of hexahedral elements is inserted into the hexahedral mesh around the coarsening region. A column of hexahedral elements is identified within the boundary sheet. The column of hexahedral elements is collapsed to create an extraction sheet of hexahedral elements contained within the coarsening region. Then, the extraction sheet of hexahedral elements is extracted to coarsen the hexahedral mesh.