Grid Project:   WY STATE CO2 2009

Mesh Version 01 Coarse Stacked Mesh, no buffer layers 512 and 256 meter horizontal spacing Description and Images

Mesh Materials from Earthvision Model Material Kbl 14 Blair 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

Purpose of Project

Build a new model that is large enough to include nearest major faults and with enough resolution to represent 9 injections wells and their area of influence. The outside boundaries are aproximately 70Km x 70 Km and the Injection site is about 3000 meter square.
The first mesh is built with coarse vertical and horizontal layering for easy setup and runs with FEHM. The solutions on this mesh will be used to design a higher resolution mesh.

(2009 letter and description)

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

Project Archive Location

FEHMN files for enter_grid_name:

/scratch/fwo/tam/wy_2009/grid_work/fehm_coarse
-rw-r--r--  1 tam pf 157197456 Oct  7 08:22 tet_final.gmv
-rw-r--r--  1 tam pf 362667134 Oct  7 08:23 tet_final.inp
-rw-r--r--  1 tam pf 181531426 Oct  7 08:23 tet.fehmn
-rw-r--r--  1 tam pf   6582347 Oct  7 08:23 tet_material.zone
-rw-r--r--  1 tam pf   3656405 Oct  7 08:23 tet_interface.zone
-rw-r--r--  1 tam pf  50109510 Oct  7 08:43 tet_multi_mat.zone
-rw-r--r--  1 tam pf    950894 Oct  7 08:43 tet_outside.zone
-rw-r--r--  1 tam pf   5488417 Oct  7 08:43 tet_outside.area
-rw-r--r--  1 tam pf 203691921 Oct  7 08:44 tet_asciic.stor

Data files:

/scratch/fwo/wyo_ev_models/RSU_AUG09_fault/surfaces_coarse/

Work Directory:

/scratch/fwo/tam/wy_2009/grid_work
drwxr-xr-x  4 tam pf  4096 Sep  9 10:28 refine_quad/
drwxr-xr-x  3 tam pf  8192 Oct  6 14:22 stack_coarse/

Grid Team Contacts