<_x0034_00947055>

400947055 06 69175 PDC ENERGY INC

1775 SHERMAN STREET - STE 3000

DENVER CO 80203 Jenifer Hakkarinen 303 8605800 Jenifer Hakkarinen Regulatory Tech 2015-12-03T11:33:08.343-07:00 DRAFT jhakkarinen 2015-12-03T11:33:08.343-07:00 jhakkarinen Jenifer.Hakkarinen@pdce.com 0.00000 Jenifer.Hakkarinen@pdce.com jhakkarinen jhakkarinen 2015-12-03T11:51:14.72-07:00 400947055 Rickard, Jeff 720 305-8280 05 123 13318 00 BERNHARDT 7-2 SENW 7 4N 66W 6 WELD 67817 WATTENBERG 90750 N PRODUCTION N N N � 40.328420 -104.823390 2010-09-25T00:00:00-06:00 Holly L. Tracy 1.8 Bernhardt #7-2 (05-123-13318)/Plugging Procedure (Intent) Producing formation: Niobrara/Codell Existing Perforations: Niobrara - 6,928'-7,056' / Codell - 7,198'-7,214’ TD: 7,280’ PBTD: 7,247’ Surface Casing: 8 5/8" 24# @ 309' w/ 240 sks cmt. Production Casing: 2 7/8” 6.4# @ 7280’ w/ 550 sks cmt & subsequent annular fill with 466sks cmt (TOC shallower than 100'). Proposed Procedure: 1. MIRU pulling unit. 2. Confirm well is dead. Kill well if necessary. 3. TIH with 1.9" or otherwise appropriate workstring and retrieve RBP at 6,862’. TOOH with RBP. 4. Circulate and kill well. 5. Rig up wireline. RIH with CIBP. Set CIBP at 6,890’. 6. Load dump bailer with 2 sx 15.8#/gal Cl G cement. RIH with dump bailer. Spot 2 sxs on top of CIBP. 7. TIH with workstring to 4,900’. RU cementers. Mix and pump 400’ balanced plug (4,500'-4,900') with 14 sks of 15.8#/gal CL G cement. 8. Pull up with workstring to 500’. Mix and pump 500’ of cement with 17 sks of 15.8#/gal class G cement. Cement should circulate to surface. 9. POOH tbg. 10. Cut surface casing 6’ below ground level and weld on cap. 11. Spot cement on backside to fill in annular space between production and surface casing. jeffrey.rickard@state.co.us false 400947055 400947055 FORM 6 INTENT SUBMITTED 400947055.pdf 400947055 400947081 WELLBORE DIAGRAM Cottonwood 1 Schematic - Actual.pdf 51039 400947055 400947083 WELLBORE DIAGRAM Cottonwood 1 Schematic - Final P&A.pdf 49400 400947055 CODL 7198 7214 400947055 NBRR 6928 7056 400947055 0 2 6890 false 400947055 1 false 400947055 2 CASING 14 4900 4500 false 400947055 3 false 400947055 4 false 400947055 5 false 400947055 6 false 400947055 7 false 400947055 8 false 400947055 9 false 400947055 10 17 0 500 false 400947055 11 false 400947055 12 false 400947055 13 false 400947055 14 false 400947055 15 false 400947055 16 false 400947055 1ST 7 7 8 2 7 8 6.4 7280 550 7280 100 ACTUAL 400947055 S.C. 1.1 7 7 8 2 7 8 6.4 7280 446 7280 100 ACTUAL 400947055 SURF 12 1 4 8 5 8 24 309 240 309 0 ACTUAL Thread was being aborted.