Code of Colorado Regulations
400 - Department of Natural Resources
404 - Oil and Gas Conservation Commission
2 CCR 404-1 - PRACTICE AND PROCEDURE
Section 410 - DIRECTIONAL DRILLING

(1) If an Operator intends to drill a deviated (directional, highly deviated, or horizontal) wellbore utilizing controlled directional drilling methods, the Operator will prepare a deviated drilling plan that includes sufficient data to describe the location of the wellbore in three dimensions from not greater than 500 feet below the surface of the ground to total depth.

(2) The Operator will file the deviated drilling plan with the Form 2 in a format approved by the Director.

(1) For an intentionally drilled deviated wellbore the Operator will perform a directional survey of the wellbore in a manner to gather sufficient data to describe the location of the wellbore in three dimensions and from not greater than 500 feet below the surface of the ground to total depth.

(2) The directional survey will be included with the Form 5, and in a format approved by the Director.

(1) For a newly drilled non-deviated wellbore or for the re-entry, recompletion or deepening of an existing wellbore, the Operator will perform an inclination survey of the wellbore and file the inclination survey with the Form 5.

(2) The first shot point of such inclination survey will be made at a depth not greater than 500 feet below the surface, and succeeding shot points will be made either at 500-foot intervals or at the nearest drill bit change thereto, but will not exceed 1,000 feet apart. The inclination survey may be made either during the normal course of drilling or after the Well has reached total depth. A directional survey meeting the requirements of Rule 410.b may be filed in lieu of an inclination survey.

(3) In the event a Form 5 is not required for re-entry, recompletion, or deepening of an existing wellbore, the Operator will file the inclination survey with a Form 4.

(4) The survey will be provided in a format approved by the Director.