COGIS - WELL Information

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Surface Location Data for API # 05-045-15232                               Status: PR         12/24/2007
Well Name/No: DEVER #A16 (click well name for production)
Operator: URSA OPERATING COMPANY LLC - 10447
Status Date: 12/24/2007 12:40:26 PM Federal or State Lease #:
FacilityID: 294072 LocationID: 311676
County: GARFIELD #045 Location: SWSE  18 6S92W 6 PM
Field: MAMM CREEK  - #52500 Elevation: 5,571 ft.
Planned Location       980 FSL  1765 FWL Lat/Long: 39.522029/-107.708809 Lat/Long Source: Field Measured
As Drilled Location      Footages Not Available Lat/Long: 39.522029/-107.708809 Lat/Long Source: Field Measured
Wellbore Data for Sidetrack #00                                                    Status: PR         11/9/2007
Spud Date: 12/28/2007 Spud Date is: ACTUAL
Wellbore Permit   DIRECTIONAL
Permit #: 20076526 Expiration Date: 12/23/2008
Prop Depth/Form: 8745 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: S2
Formation and Spacing: Code: WMFK , Formation: WILLIAMS FORK , Order: 191-13 , Unit Acreage: 260, Drill Unit: S2
Wellbore Completed
Completion Date: 1/8/2008
Measured TD: 8763 Measured PB depth: 8714
True Vertical TD: 8587 True Vertical PB depth: 8538
Top PZ Location:           Sec: 18 Twp: 6S 92W Footage: 132 S  716 W Depth
Bottom Hole Location:   Sec: 18 Twp: 6S 92W Footages: 132 FSL  716 FWL Depth
Log Types: TRIPLE COMBO (RMTE/CCL/GR) & CBL
Casing: String Type: CONDUCTOR , Hole Size: 24, Size: 16, Top: 0, Depth: 77, Weight:
Cement: Sacks: 100, Top: 0, Bottom: 77, Determination Method: CALC
Casing: String Type: SURF , Hole Size: 12.25, Size: 8.625, Top: 0, Depth: 1072, Weight:
Cement: Sacks: 366, Top: 0, Bottom: 1083, Determination Method: CALC
Casing: String Type: 1ST , Hole Size: 7.875, Size: 5.5, Top: 0, Depth: 8754, Weight:
Cement: Sacks: 725, Top: 3960, Bottom: 8754, Determination Method: CBL
Formation Log Top Log Bottom Cored DSTs
MESAVERDE 3917 N N
CAMEO 6599 N N
ROLLINS 7624 N N
COZZETTE 8201 N N
CORCORAN 8465 N N
Completed information for formation COZZ                                     Status: PR         11/9/2007
1st Production Date: 4/6/2008 Choke Size:
Status Date: 11/9/2007 Open Hole Completion: N
Commingled: Y Production Method:
Formation Name: COZZETTE Status: PR
Formation Treatment
Treatment Date: 3/25/2008    
Treatment summary: 13,008 BBLS 2% KCL; 300,100 LBS 30/50 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: 8396 Interval Top: 8205
    # of Holes: 45 Hole Size: 0.42
Completed information for formation CRCRN                                     Status: PR         11/9/2007
1st Production Date: 4/6/2008 Choke Size:
Status Date: 11/9/2007 Open Hole Completion: N
Commingled: Y Production Method:
Formation Name: CORCORAN Status: PR
Formation Treatment
Treatment Date: 3/20/2008    
Treatment summary: 11,751 BBLS 2% KCL; 264,400 LBS 30/50 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 CRCRN .
    Perforation Data:
    Interval Bottom: 8470 Interval Top: 8360
    # of Holes: 51 Hole Size: 0.42
Completed information for formation WFCM                                     Status: PR         1/23/2009
1st Production Date: 4/6/2008 Choke Size:
Status Date: 1/23/2009 Open Hole Completion: N
Commingled: Y Production Method:
Formation Name: WILLIAMS FORK - CAMEO Status: PR
Formation Treatment
Treatment Date: 3/26/2008    
Treatment summary: 28,949 BBLS 2% KCL; 616,000 LBS 30/50 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: 7606 Interval Top: 6592
    # of Holes: 147 Hole Size: 0.42
Completed information for formation WFILS                                     Status: CM         4/27/2008
1st Production Date: 4/6/2008 Choke Size: 0.250
Status Date: 4/27/2008 Open Hole Completion: N
Commingled: Y Production Method:
Formation Name: WILLIAMS FORK-ILES Status: CM
Formation Treatment
Treatment Date: 3/20/2008    
Treatment summary:
Tubing Size: 2.375 Tubing Setting Depth: 7499
Tubing Packer Depth: Tubing Multiple Packer:
Open Hole Top: Open Hole Bottom:
    Initial Test Data:
Test Date: 4/27/2008 Test Method: FLOWING
Hours Tested: 24 Gas Type: WET
Gas Disposal: SOLD
Test Type Measure
    BBLS_H2O 325    
    BTU_GAS 1019    
    CALC_BBLS_H2O 325    
    CALC_MCF_GAS 1477    
    CASING_PRESS 2600    
    MCF_GAS 1477    
    TUBING_PRESS 1900    
    Perforation Data:
    Interval Bottom: 8630 Interval Top: 6592
    # of Holes: 243 Hole Size: 0.42