| Engineer | Form: (02)
401600487
10/16/2018 | 1) Operator shall comply with the most current revision of the Northwest Notification Policy.
2) Operator shall provide cement coverage from the production casing shoe (4+1/2" FIRST STRING) to a minimum of 200' above all Mesaverde Group (and Ohio Creek Formation, if present) oil, gas, and water-bearing sandstone and coalbed formations. Verify production casing cement coverage with a cement bond log.
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| OGLA | Form: (02)
401600487
01/02/2019 | Drilling / Completion Operations: The following COAs will apply:
•Water/Bentonite-Based Drilling Mud (WBM) Generated Solids / Cuttings Management and Onsite Disposal or Onsite Beneficial Reuse COA: a) A closed loop system must be implemented during drilling (as indicated on the Form 2A and Form 2). B) All cuttings generated during drilling must be kept in a bermed portion of the well pad prior to disposition. c) The moisture content of any water/bentonite-based drilling mud (WBM-) generated cutting shall be as low as practicable to prevent accumulation of liquids greater than de minimis amounts. Solids control equipment consisting of shale shakers, centrifuges, and flocculating unit may be utilized to separate WBM-generated cutting solids from liquids (water/bentonite drilling mud). Drill cuttings will be segregated between surface casing cuttings and the intermediate / production zone cuttings; and stockpiled on location. d) Within two weeks of the start of drilling, cuttings samples (a minimum of one well for pads with 10 or fewer wells and two wells for pads with 11 or more wells that are aerially representative of the total area being drilled from this location) from each interval will be collected and will be submitted for laboratory analysis of COGCC Table 910-1 constituents. If cuttings meet Table 910-1 standards, they will be treated as soil and beneficially reused on location (cuttings management area, the cut portion of the pad, cuttings trench, dry cuttings drilling pit, or utilized in onsite interim reclamation activities); e) In the event that a certain volume of drill cuttings analytically demonstrate constituents above Table 910-1 standards, the cuttings will be remediated during interim reclamation activities to levels below all applicable standards of Table 910-1; f) No liners (if used) are allowed to be disposed of with the drill cuttings. |
| Permit | Form: (02)
401600487
01/25/2019 | 1. If conductors are preset, Operator shall comply with Notice to Operators: Procedures for Preset Conductors (dated September 1, 2016, revised October 6, 2016). |
| Permit | Form: (02)
401600487
01/25/2019 | 1. Operator shall comply with Notice to Operators: Interim Reclamation Procedures for Delayed Operation (dated January 5, 2017). |
| Permit | Form: (02)
402633271
02/03/2022 | Operator shall comply with Notice to Operators: Interim Reclamation Procedures for Delayed Operations (dated January 5, 2017). |
| Engineer | Form: (02)
402633271
02/15/2022 | 1)Operator shall comply with the most current revision of the Northwest Notification Policy.
2)Operator shall comply with the most current revision of the Garfield County Rulison Field Notice to Operators, with the following exception: All field notice requirements specified in that Notice to Operators are superseded by the requirements of the most current revision of the Northwest Colorado Notification Policy (see Condition of Approval #1).
3)Operator shall provide cement coverage from the production casing shoe (4 1/2" FIRST STRING) to a minimum of 200' above the Wasatch G as defined by COGCC in the report "Casing and Cement Standards for Geologic Isolation Piceance Basin Bradenhead Monitoring Area and Nearby Fields," dated April 18, 2016, COGCC Document No. 2056199, Appendix A Field Scout Cards and Annotated Type Logs) to provide isolation of the Lower Wasatch, all Mesaverde Group formations including the Ohio Creek Formation, and underlying formations, if penetrated. Verify production casing cement coverage with a cement bond log.
4)During stimulation, operator shall monitor the bradenhead, casing, and tubing pressure of the proposed well and all offset wells under Operator’s control which penetrate the stimulated formation and have a treated interval separation of 300 feet or less. Operator shall notify COGCC Engineering staff if bradenhead pressures increase by more than 200 psig.
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