COGIS - WELL Information

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Surface Location Data for API # 05-045-12157                               Status: PR         11/22/2006
Well Name/No: DEVER #A1 (click well name for production)
Operator: URSA OPERATING COMPANY LLC - 10447
Status Date: 11/22/2006 Federal or State Lease #:
FacilityID: 284378 LocationID: 311676
County: GARFIELD #045 Location: SWSE  18 6S92W 6 PM
Field: MAMM CREEK  - #52500 Elevation: 5,571 ft.
Planned Location       969 FSL  1790 FWL Lat/Long: 39.522002/-107.70872 Lat/Long Source: Field Measured
As Drilled Location      Footages Not Available Lat/Long: 39.522001/-107.708721 Lat/Long Source: Field Measured
Wellbore Data for Sidetrack #00                                                    Status: PR         11/22/2006
Spud Date: 6/29/2006 Spud Date is: ACTUAL
Wellbore Permit   DIRECTIONAL
Permit #: 20060875 Expiration Date: 4/19/2007
Prop Depth/Form: 7855 Surface Mineral Owner Same: N
Mineral Owner: FEE Surface Owner: FEE
Unit: Unit Number:
Formation and Spacing: Code: ILES , Formation: ILES , Order: 191-25 , Unit Acreage: 260, Drill Unit: S/2
Formation and Spacing: Code: WMFK , Formation: WILLIAMS FORK , Order: 191-13 , Unit Acreage: 260, Drill Unit: S2
Wellbore Completed
Completion Date: 9/19/2006
Measured TD: 8615 Measured PB depth: 8556
True Vertical TD: 8580 True Vertical PB depth: 8520
Top PZ Location:           Sec: 18 Twp: 6S 92W Footage: 455 S  1727 W Depth
Bottom Hole Location:   Sec: 18 Twp: 6S 92W Footages: 455 FSL  1727 FWL Depth
Log Types: NEUTRON/DENSITY, INDUCTION, CBL
Casing: String Type: CONDUCTOR , Hole Size: 24, Size: 16, Top: 0, Depth: 60, Weight:
Cement: Sacks: , Top: 0, Bottom: 60, Determination Method: CALC
Casing: String Type: SURF , Hole Size: 12.25, Size: 8.625, Top: 0, Depth: 963, Weight:
Cement: Sacks: 350, Top: 0, Bottom: 972, Determination Method: CALC
Casing: String Type: 1ST , Hole Size: 7.875, Size: 5.5, Top: 0, Depth: 8602, Weight:
Cement: Sacks: 974, Top: 3800, Bottom: 8615, Determination Method: CBL
Formation Log Top Log Bottom Cored DSTs
MESAVERDE 3838 N N
CAMEO 6296 N N
ROLLINS 7477 N N
COZZETTE 8051 N N
CORCORAN 8301 N N
Completed information for formation CMEOC                                     Status: CM         11/22/2006
1st Production Date: 11/5/2006 Choke Size:
Status Date: 11/22/2006 Open Hole Completion: N
Commingled: Y Production Method:
Formation Name: CAMEO COAL Status: CM
Formation Treatment
Treatment Date: 10/19/2006    
Treatment summary: CAMEO COAL-FRAC W/5,797 BBLS OF 2% KCL, 246,000 LBS OF 30/50 SAND AND 80,200 LBS 20/40 SAND.
Tubing Size: Tubing Setting Depth:
Tubing Packer Depth: Tubing Multiple Packer:
Open Hole Top: Open Hole Bottom:
No Initial Test Data was found for formation CMEOC .
    Perforation Data:
    Interval Bottom: 7464 Interval Top: 7300
    # of Holes: 180 Hole Size: 0.42
Completed information for formation COZZ                                     Status: PR         11/22/2006
1st Production Date: 11/5/2006 Choke Size:
Status Date: 11/22/2006 Open Hole Completion: N
Commingled: Y Production Method:
Formation Name: COZZETTE Status: PR
Formation Treatment
Treatment Date: 10/18/2006    
Treatment summary: COZZETTE-FRAC W/4,989 BBLS OF 2% KCL, 201,400 LBS OF 30/50 SAND 66,200 LBS 20/40 SAND.
Tubing Size: Tubing Setting Depth:
Tubing Packer Depth: Tubing Multiple Packer:
Open Hole Top: Open Hole Bottom:
No Initial Test Data was found for formation COZZ .
    Perforation Data:
    Interval Bottom: 8192 Interval Top: 8052
    # of Holes: 208 Hole Size: 0.42
Completed information for formation CRCRN                                     Status: PR         11/22/2006
1st Production Date: 11/5/2006 Choke Size: 0.250
Status Date: 11/22/2006 Open Hole Completion: N
Commingled: Y Production Method:
Formation Name: CORCORAN Status: PR
Formation Treatment
Treatment Date: 10/17/2006    
Treatment summary: CRCRN FRAC W/ 3,550 GALS 2% KCL, 134,300 LBS 30/50 SAND AND 45,000 LBS 20/40 SAND.
Tubing Size: 2.375 Tubing Setting Depth: 7846
Tubing Packer Depth: Tubing Multiple Packer:
Open Hole Top: Open Hole Bottom:
    Initial Test Data:
Test Date: 11/22/2006 Test Method: FLOWING
Hours Tested: 24 Gas Type: WET
Gas Disposal: SOLD
Test Type Measure
    BBLS_H2O 737    
    CALC_BBLS_H2O 737    
    CALC_MCF_GAS 2178    
    CASING_PRESS 2915    
    MCF_GAS 2178    
    TUBING_PRESS 2460    
    Perforation Data:
    Interval Bottom: 8455 Interval Top: 8390
    # of Holes: 244 Hole Size: 0.42
Completed information for formation WFCM                                     Status: PR         11/22/2006
1st Production Date: 11/5/2006 Choke Size:
Status Date: 11/22/2006 Open Hole Completion: N
Commingled: Y Production Method:
Formation Name: WILLIAMS FORK - CAMEO Status: PR
Formation Treatment
Treatment Date: 10/20/2006    
Treatment summary: WFCM FRAC W/32,353 BBLS OF 2% KCL, 1,348,100 LBS OF 30/50 SAND AND 424,100 LBS 20/40 SAND.
Tubing Size: Tubing Setting Depth:
Tubing Packer Depth: Tubing Multiple Packer:
Open Hole Top: Open Hole Bottom:
No Initial Test Data was found for formation WFCM .
    Perforation Data:
    Interval Bottom: 7229 Interval Top: 5823
    # of Holes: 894 Hole Size: 0.42