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3-D Cavern Enlargement Analyses
Three-dimensional finite element analyses simulate the mechanical response of enlarging existing caverns at the Strategic Petroleum Reserve (SPR). The caverns are located in Gulf Coast salt domes and are enlarged by leaching during oil drawdowns as fresh water is injected to displace the crude oil from the caverns. The current criteria adopted by the SPR limits cavern usage to 5 drawdowns (leaches). As a base case, 5 leaches were modeled over a 25 year period to roughly double the volume of a 19 cavern field. Thirteen additional leaches where then simulated until caverns approached coalescence. The cavern field approximated the geometries and geologic properties found at the West Hackberry site. This enabled comparisons are data collected over nearly 20 years to analysis predictions. The analyses closely predicted the measured surface subsidence and cavern closure rates as inferred from historic well head pressures. This provided the necessary assurance that the model displacements, strains, and stresses are accurate. However, the cavern field has not yet experienced the large scale drawdowns being simulated. Should they occur in the future, code predictions should be validated with actual field behavior at that time. The simulations were performed using JAS3D, a three dimensional finite element analysis …
Date:
March 1, 2002
Creator:
EHGARTNER, BRIAN L. & SOBOLIK, STEVEN R.
Object Type:
Report
System:
The UNT Digital Library
A 3-D SAR approach to IFSAR processing
Interferometric SAR (IFSAR) can be shown to be a special case of 3-D SAR image formation. In fact, traditional IFSAR processing results in the equivalent of merely a super-resolved, under-sampled, 3-D SAR image. However, when approached as a 3-D SAR problem, a number of IFSAR properties and anomalies are easily explained. For example, IFSAR decorrelation with height is merely ordinary migration in 3-D SAR. Consequently, treating IFSAR as a 3-D SAR problem allows insight and development of proper motion compensation techniques and image formation operations to facilitate optimal height estimation. Furthermore, multiple antenna phase centers and baselines are easily incorporated into this formulation, providing essentially a sparse array in the elevation dimension. This paper shows the Polar Format image formation algorithm extended to 3 dimensions, and then proceeds to apply it to the IFSAR collection geometry. This suggests a more optimal reordering of the traditional IFSAR processing steps.
Date:
March 1, 2000
Creator:
Doerry, Armin W. & Bickel, Doug L.
Object Type:
Article
System:
The UNT Digital Library
[24-Hour Film Feast with Malik Yoba]
Video footage from The Black Academy of Arts and Letters recorded during TBAALs 2008 24-Hour Filmfeast featuring actor Malik Yoba on March 1st. The footage features a live Q&A discussion with Yoba on his career and perspective on the industry.
Date:
March 1, 2008
Creator:
Yoba, Malik
Object Type:
Video
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0001]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0002]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0003]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0004]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0005]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0006]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0007]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0008]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0009]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0010]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0011]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0012]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0013]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0014]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0015]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0016]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0017]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0018]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0019]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0020]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0021]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library