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400702093 06 47120 KERR MCGEE OIL & GAS ONSHORE LP

P O BOX 173779

DENVER CO 80217-3779 REBECCA HEIM 720 929-6361 720 929-7361 CHERYL LIGHT SR. REGULATORY ANALYST 2014-10-06T12:40:06.47-06:00 DRAFT heimr 2014-10-06T12:40:06.47-06:00 heimr DJRegulatory@anadarko.com 0.00000 REBECCA.HEIM@ANADARKO.COM heimr heimr 2014-10-06T12:47:28.03-06:00 400702093 Johnson, Randell 303 815-9641 05 123 20112 00 IMPERIAL 15-31 NWNE 15 1N 68W 6 WELD WATTENBERG 90750 N PRODUCTION Y 1280 N N N 40.057160 -104.987050 2007-04-02T00:00:00-06:00 Paul Tappy 2.6 Imperial 15-31: Plug & Abandonment (SEE ATTACHED PROCEDURE) 1 Provide 48 hour notice to COGCC prior to rig up per request on approved Form 6 (e.g. call field coordinator, submit Form 42, etc.). Call IOC (970-506-5980) at least 24 hours prior to rig move. Request they catch and remove plunger, isolate production equipment, and remove any automation equipment prior to MIRU. 2 MIRU slickline. RIH to retrieve production equipment and tag for fill. Note tagged depth in OpenWells. RDMO slickline. 3 Prepare location for base beam equipped rig. Install perimeter fence as needed. 4 Check and report surface casing pressure. If surface casing is not accessible at ground level, re-plumb so valve is at ground level 5 MIRU WO rig. Kill well as necessary with water and biocide. ND wellhead. NU BOP. 6 Unland 2-3/8” tbg (245 total joints landed at 7788’) and TOOH standing back all 2-3/8” tubing. 7 MIRU wireline. RIH with junk basket/gauge ring (4-1/2” 11.6#) to 7800’. POOH. PU and RIH with CIBP (4-1/2”, 11.6#) to set at 7750’ (collars at 7726’ & 7766’). POOH. RDMO wireline. 8 MIRU hydrotester. Hydrotest 2-3/8” tubing to 3000psi while TIH open ended. Tag CIBP set at 7750’. PUH just above CIBP and circulate all gas out of the hole. Pumping water with biocide, pressure test the CIBP and production casing to 1000psi for 15 minutes. If pressure test passes, proceed to next step; otherwise contact engineering. 9 MIRU cementing services. Establish circulation with water and pump 45 sx Class “G” cement with 20% silica flour, 0.4% CD-32 and 0.4% ASA-301 mixed at 15.8ppg and 1.38 cuft/sx (cement volumes based on 4-1/2” 11.6# casing capacity from 7750’ to 7075’ with no excess). Displace cement to estimated TOC at 7030’ using approx. 27 bbls water. TOOH and stand back 15 stands of 2-3/8” tubing so EOT at +/- 6830’. Reverse circulate using approx. 53 bbls water (2 times tubing volume) or until returns are clean. RDMO cementing services. 10 TOOH and land 2-3/8” EOT at 4850’. LD extra tubing. 11 MIRU cementing services. Establish circulation with water and pump 20 bbls sodium metasilicate followed by 35 sx Class “G” cement with 0.25 pps cello flake, 0.4% CD-32 and 0.4% ASA-301 mixed at 15.8ppg and 1.15 cuft/sx (cement volumes based on 4-1/2” 11.6# casing capacity from 4850’ to 4440’). Displace cement to estimate TOC at 4380’ using 17 bbls water. TOOH and stand back 11 stands of 2-3/8” tubing so EOT at +/- 4180’. Reverse circulate using approx. 32 bbls water (2 times tubing volume) or until returns are clean. RDMO cementing services. WOC to set up per cementing company recommendation. 12 TOOH and stand back 1380’ of 2-3/8” tubing and LD extra tubing. 13 MIRU wireline. RIH to tag cement plug @ +/- 4380’. If cement is not above 4440’ contact engineer, otherwise proceed to next step. 14 RIH and jet cut 4-1/2” production casing at 1280’. RDMO wireline. Circulate bottoms up and continue circulating to remove any gas from wellbore. 15 ND BOP. Install BOP on surface casing head with 4-1/2” pipe rams. Install 3000 psi ball valves on both casing head outlets. Install a choke or choke manifold on one outlet. 16 TOOH and LD 1280’ of 4-1/2” casing. 17 TIH w/ 2-3/8” tubing open ended to 1380’ (100’ inside the 4-1/2” stub). 18 MIRU cementing services. Establish circulation with water and pump 10 bbls SAPP mud flush, 20 bbls fresh water spacer, then balanced stub plug using 235 sx Type III cement with cello flake and CaCl2 as necessary, mixed at 14.8 ppg and 1.33 cuft/sx (cement volumes based on 100’ inside 4-1/2” casing, 473’ in 8” hole with 40% excess, and 200’ in 8-5/8” surface casing). RDMO cementing services. 19 TOOH and LD 2-3/8” tubing until EOT at +/- 200’. Circulate down tubing and up surface casing/tubing annulus until returns are clean to ensure CIBP can randell.johnson@state.co.us false 400702093 400702093 FORM 6 INTENT SUBMITTED 400702093.pdf 400702093 400702097 PROPOSED PLUGGING PROCEDURE IMPERIAL 15-31 PROCEDURE.pdf 44104 400702093 400702098 WELLBORE DIAGRAM IMPERIAL 15-31 WBD.pdf 70575 400702093 CODL 7840 7858 400702093 0 45 7750 false 400702093 1 25 80 false 400702093 2 CASING 45 7075 7750 true 400702093 3 CASING 35 4440 4850 true 400702093 4 false 400702093 5 false 400702093 6 false 400702093 7 false 400702093 8 false 400702093 9 false 400702093 10 235 607 1380 false 400702093 11 25 false 400702093 12 false 400702093 13 false 400702093 14 false 400702093 15 false 400702093 16 false 400702093 1ST 7 7 8 4 1 2 11.6 7957 375 7957 4170 CBL ACTUAL 400702093 SURF 12 1 4 8 5 8 24 807 570 807 0 CALC ACTUAL Thread was being aborted.