Grid Project:   WY STATE CO2 16K Domain

Version History

Image Gallerys

V3.A Extended Computational Mesh

V3 Computational Mesh

Images of Earthvision Geology

Images showing surface dip

All EV and Mesh Images

Images from Method Testing

Purpose of Project

A CD contained all files in the RSU 3D modeling folder is sent to by overnight mail. You should receive it tomorrow or Friday. The tracking number is EB914441064US. I used ev 7.5.3 to build the model. If you have any question please let me know.

One task of the RSU geological CO2 sequestration project is to evaluate the CO2 injection feasibility and storage capacity of the Weber Sandstone and Madison Limestone in the Rock Springs Uplift, Wyoming.

The Rock Springs Uplift is a large (50 miles by 35 miles), doubly-plunging anticline characterized by more than 10,000 feet of closed structural relief. The potential CO2 storage reservoirs are the Pennsylvanian Weber Sandstone and the Mississippian Madison Limestone. The Weber Sandstone is approximately 700 feet thick, and the Madison Limestone is approximately 250 feet thick. Both units have substantial porosity (storage) and permeability (deliverability). Neither the Weber nor the Madison is exposed on the Rock Springs Uplift; the nearest surface outcrops of these units are 50 to 100 miles from the margins of the structure. Consequently, these two formations are far removed from any meteoric water recharge and have retained their original marine/evaporite character (saline). At the crest of the Uplift, the Weber lies 6,200 feet below ground and the Madison lies 7,500 feet below ground. On the flanks of the structure, these units lie 15,000 feet or more below ground. Within the Rock Springs Uplift, both the Weber Sandstone and the Madison Limestone have temperature and pressure attributes that make them ideally suited to accept huge amounts of injected CO2.

Five thousand feet of low-permeability Cretaceous shales overlie the Weber and the Madison, and make an ideal seal for the CO2 storage reservoirs. The composition of produced gas from the Weber and Madison units - sour and up to 80% CO2 - demonstrates the sealing capacity of these shales. In strong contrast, gas produced from Cretaceous sandstones above the shales is sweet and typically less than 1% CO2. This significant difference in fluid chemistry between the Paleozoic and Cretaceous stratigraphic units negates the potential for vertical fluid connectivity on the Rock Springs Uplift.

The available data show that fluid salinity in the Weber Sandstone generally exceeds 35,000 ppm, and fluid salinity in the Madison Limestone ranges from 50,000 to 80,000 ppm. Both the Weber Sandstone and the Madison Limestone within the Rock Springs Uplift are considered saline aquifers. In the Rock Springs Uplift, salinities of the two aquifers in question far exceed the acceptable level: these aquifers could not be used for drinking water.

Significant Cretaceous oil and gas production occurs on the Uplift, while significant Paleozoic oil and gas production occurs on Uplift margins. On the Uplift, 75 wells have penetrated the Paleozoic: 30 of these are plugged and abandoned; 14 are shut in or abandoned but not plugged; and 31 are active. Therefore, there are 45 wells on the Uplift that could be used as injecting or monitoring wells for geological CO2 sequestration activities.

John

Zunsheng (John) Jiao Senior Geologist/Geological Project Analyst Wyoming State Geological Survey P. O. Box 1347 Laramie, Wyoming 82073 Phone: (307) 766-2286 ext. 225 Fax: (307) 766-2605 http://www.wsgs.uwyo.edu

Earthvision Model cut away at 16K Domain llcorner of mesh 678,000 4,622,850 translated to 0,0

Mesh Materials from Earthvision Model

Material Kba   13 Baxter 
Material Kf    12 Frontier 
Material Kmr   11 Mowry Shale 
Material Kmd   10 Dakota 
Material Jm     9 Morrison 
Material Je     8 Entrada 
Material Jn     7 Nugget 
Material Tc     6 Chugwater 
Material Pp     5 Phosphoria 
Material Pw     4 Weber  
Material PMa    3 Amsden 
Material Mm     2 Madison  
Material Mmb    1 Bedrock 

Project Archives

V03 3D Conforming Mesh 16K Domain

number of nodes = 524880 number of elements = 3113012 Stacked Mesh with Conforming Interfaces V03 Stacked Mesh 16K Domain Resolution 200m spacing horizontal. Vertical min is 10m. V03 3D Mesh Images V03 README txt file V03 Mesh Info txt file V03 Method txt file

          Apr 16  2009 tet.inp -> stor_pyr/connect_pyr.inp

164900026 Apr 13  2009 tet.fehmn
200391613 Apr 13  2009 tet.stor
 12786365 Apr 13  2009 tet_multi_mat.zone
  2479341 Apr 13  2009 tet_outside.area
   429635 Apr 13  2009 tet_outside.zone

  5774121 Mar 23  2011 tet_material.zone
      490 Mar 23  2011 tet_vor_volumes.txt
 49338763 Mar 23  2011 tet_imt_vorvol.dat

 74175334 Apr 20  2010 hex.fehmn.fehmn

     3780 Mar 25  2011 README.txt

Local dir: /scratch/fwo/tam/wy_2008/fehm_200m_vers03 
Grid work: /scratch/fwo/tam/wy_2008/grid/merge_offset_2tri_200m/vers03 

V03.A 3D Mesh Extended

number of nodes = 668880 number of elements = 4028044 V03 Stacked Mesh with Extended Surfaces Surfaces extended at elevation by 38400m each direction. Resolution is octree starting at 200m to 6400m at outside boundary. Resolution starting at 1600 estimated to have over 1M nodes. V03 Extended Mesh Images V03 Extended Mesh README txt file

212640338 Jun 25 17:33 tet.fehmn
176975932 Jun 25 17:36 tet.stor
  7358550 Jun 25 17:33 tet_material.zone
 20431052 Jun 25 17:34 tet_multi_mat.zone
   240519 Jun 25 17:34 tet_outside.zone
  1387621 Jun 25 17:34 tet_outside_vor.area

Local dir: /scratch/fwo/tam/wy_2008/fehm_200m_vers03_exA 
Grid work: /scratch/fwo/tam/wy_2008/grid/merge_extend_200m/ 

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