Drilling/Completion Operations | Form: (02 ) 401467332 3/15/2018 | Upon initial rig-up and at least once every thirty (30) days during drilling operations
thereafter, pressure testing of the casing string and each component of the blowout
prevention equipment including flange connections will be performed to seventy
percent (70%) of working pressure or seventy percent (70%) of the internal yield of
casing, whichever is less. Pressure testing shall be conducted and the documented
results will be retained by the operator for inspection by the Director for a period of one
(1) year. Activation of the pipe rams for function testing shall be conducted on a daily
basis when practicable.
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Drilling/Completion Operations | Form: (02 ) 401467332 3/15/2018 | Adequate blowout prevention equipment will be used on all well servicing operations
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Drilling/Completion Operations | Form: (02 ) 401467332 3/15/2018 | Backup stabbing valves shall be required on well servicing operations during reverse
circulation. Valves shall be pressure tested before each well servicing operation using
both low-pressure air and high-pressure fluid.
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Drilling/Completion Operations | Form: (02 ) 401467332 3/15/2018 | No drill stem tests will be performed. |
Drilling/Completion Operations | Form: (02 ) 401467332 3/15/2018 | Prior to drilling operations, Crestone will perform an anti-collision scan of existing offset
wells that have the potential of being within close proximity of the proposed well. This
anti-collision scan will include definitive MWD or gyro surveys of the offset wells with
included error of uncertainty per survey instrument, and compared against the
proposed wellpath with its respective error of uncertainty. If current surveys do not
exist for the offset wells, the Operator may have gyro surveys conducted to verify
bottomhole location. The proposed well will only be drilled if the anti-collision scan
results indicate that there is not a risk for collision, or harm to people or the
environment. For the proposed well, upon conclusion of drilling operations, an as constructed
gyro survey will be submitted to COGCC with the Form 5.
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Drilling/Completion Operations | Form: (02 ) 401467332 3/15/2018 | Crestone will comply with the “COGCC Policy for Bradenhead Monitoring During
Hydraulic Fracturing Treatments in the Greater Wattenberg Area”, dated May 29,
2012.
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Drilling/Completion Operations | Form: (02 ) 401467332 3/15/2018 | One of the first wells drilled on the pad will be logged with Cased hole Pulsed Neutron
Log with Gamma Ray Log from the kick-off point to into the surface casing. All wells on
the pad will have a cement bond log with gamma-ray run on production casing (or on
intermediate casing if production liner is run) into the surface casing. The horizontal
portion of every well will be logged with a measured while-drilling gamma-ray log. The
Form 5, Completion Report, for each well on the pad will list all logs run in that well
and have those logs attached. The Form 5 for each well shall clearly state “No openhole
logs were run” and shall reference the Rule 317.p Exception granted for the well.
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