COGIS - WELL Information

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Surface Location Data for API # 05-045-13882                               Status: PR         10/12/2007
Well Name/No: GENTRY #B3 (click well name for production)
Operator: URSA OPERATING COMPANY LLC - 10447
Status Date: 10/12/2007 Federal or State Lease #:
FacilityID: 289821 LocationID: 335549
County: GARFIELD #045 Location: SENW  17 6S92W 6 PM
Field: MAMM CREEK  - #52500 Elevation: 5,624 ft.
Planned Location       1999 FNL  1621 FWL Lat/Long: 39.52838/-107.69423 Lat/Long Source: Field Measured
As Drilled Location      Footages Not Available Lat/Long: 39.528369/-107.694097 Lat/Long Source: Field Measured
Wellbore Data for Sidetrack #00                                                    Status: PR         10/12/2007
Spud Date: 6/14/2007 Spud Date is: ACTUAL
Wellbore Permit   DIRECTIONAL
Permit #: 20070831 Expiration Date: 3/21/2008
Prop Depth/Form: 8776 Surface Mineral Owner Same: Y
Mineral Owner: FEE Surface Owner: FEE
Unit: Unit Number:
Formation and Spacing: Code: ILES , Formation: ILES , Order: 191-25 , Unit Acreage: 320, Drill Unit: S2
Formation and Spacing: Code: WMFK , Formation: WILLIAMS FORK , Order: 191-24 , Unit Acreage: 320, Drill Unit: S2
Wellbore Completed
Completion Date: 7/8/2007
Measured TD: 8805 Measured PB depth: 8758
True Vertical TD: 8722 True Vertical PB depth: 8675
Top PZ Location:           Sec: 17 Twp: 6S 92W Footage: 2373 S  2046 W Depth
Bottom Hole Location:   Sec: 17 Twp: 6S 92W Footages: 2373 FSL  2046 FWL Depth
Log Types: TRIPLE COMBO (NEUTRON DENSITY, INDUCTION), CBL
Casing: String Type: CONDUCTOR , Hole Size: 24, Size: 16, Top: 0, Depth: 50, Weight:
Cement: Sacks: 5, Top: 0, Bottom: 50, Method Grade: CALC
Casing: String Type: SURF , Hole Size: 12.25, Size: 8.625, Top: 0, Depth: 932, Weight:
Cement: Sacks: 290, Top: 0, Bottom: 940, Method Grade: CALC
Casing: String Type: 1ST , Hole Size: 7.875, Size: 5.5, Top: 0, Depth: 8850, Weight:
Cement: Sacks: 725, Top: 4334, Bottom: 8805, Method Grade: CBL
Formation Log Top Log Bottom Cored DSTs
MESAVERDE 3970 N N
COAL 4942 N N
CAMEO 6706 N N
ROLLINS 7691 N N
COZZETTE 8265 N N
CORCORAN 8514 N N
Completed information for formation COZZ                                     Status: PR         10/12/2007
1st Production Date: 10/1/2007 Choke Size:
Status Date: 10/12/2007 Open Hole Completion: N
Commingled: Y Production Method:
Formation Name: COZZETTE Status: PR
Formation Treatment
Treatment Date: 9/10/2007    
Treatment summary: CORC-COZZ FRAC W/13,124 BBL 2% KCL, 214,580 LBS 30/50 SAND AND 129,000 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: 8391 Interval Top: 8284
    # of Holes: 128 Hole Size: 0.42
Completed information for formation CRCRN                                     Status: PR         10/12/2007
1st Production Date: 10/1/2007 Choke Size:
Status Date: 10/12/2007 Open Hole Completion: N
Commingled: Y Production Method:
Formation Name: CORCORAN Status: PR
Formation Treatment
Treatment Date: 9/10/2007    
Treatment summary: CORC-COZZ FRAC W/13,124 BBL 2% KCL, 214,580 LBS 30/50 SAND AND 129,000 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 CRCRN .
    Perforation Data:
    Interval Bottom: 8667 Interval Top: 8544
    # of Holes: 128 Hole Size: 0.42
Completed information for formation WFCM                                     Status: PR         10/12/2007
1st Production Date: 10/1/2007 Choke Size:
Status Date: 10/12/2007 Open Hole Completion: N
Commingled: Y Production Method:
Formation Name: WILLIAMS FORK - CAMEO Status: PR
Formation Treatment
Treatment Date: 9/11/2007    
Treatment summary: FRAC WITH 41,443 BBLS 2% KCL, 731,200 LBS 30/50 SAND AND 386,650 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: 7669 Interval Top: 6024
    # of Holes: 404 Hole Size: 0.42
Completed information for formation WFILS                                     Status: CM         10/12/2007
1st Production Date: 10/1/2007 Choke Size: 0.219
Status Date: 10/12/2007 Open Hole Completion: N
Commingled: N Production Method:
Formation Name: WILLIAMS FORK-ILES Status: CM
Formation Treatment
Treatment Date: 9/10/2007    
Treatment summary: SEE EACH FORMATION FOR DETAILED INFORMATION.
Tubing Size: 2.375 Tubing Setting Depth: 7431
Tubing Packer Depth: Tubing Multiple Packer:
Open Hole Top: Open Hole Bottom:
    Initial Test Data:
Test Date: 10/12/2007 Test Method: FLOWING
Hours Tested: 24 Gas Type: WET
Gas Disposal: SOLD
Test Type Measure
    BBLS_H2O 355    
    BTU_GAS 1099    
    CALC_BBLS_H2O 355    
    CALC_MCF_GAS 1147    
    CASING_PRESS 2875    
    MCF_GAS 1147    
    TUBING_PRESS 2122    
    Perforation Data:
    Interval Bottom: 8667 Interval Top: 6024
    # of Holes: 532 Hole Size: 0.42