Wyoming Administrative Code
Agency 020 - Environmental Quality, Dept. of
Sub-Agency 0011 - Water Quality
Chapter 24 - Class VI Injection Wells and Facilities Underground Injection Control Program
Section 24-23 - Injection Well-plugging

Universal Citation: WY Code of Rules 24-23

Current through September 21, 2024

(a) Prior to well-plugging, the owner or operator shall flush each Class VI injection well with a buffer fluid, determine bottom hole reservoir pressure, and perform a final external mechanical integrity test in accordance with Section 19 of this Chapter.

(b) The owner or operator of a Class VI well shall prepare, maintain, update on the same schedule as the update to the area of review delineation, and comply with a well-plugging plan that is approved by the Administrator. The well-plugging plan shall include the following information:

(i) Appropriate test or measure to determine bottom hole reservoir pressure;

(ii) Appropriate testing methods to ensure final external mechanical integrity as specified in Section 19 of this Chapter;

(iii) The type and number of plugs to be used;

(iv) The placement of each plug including the elevation of the top and bottom of each plug;

(v) The type and grade and quantity of material, suitable for use with the carbon dioxide stream, to be used in plugging; and

(vi) A description of the method of placement of the plugs.

(c) Any amendments to the injection well-plugging plan are subject to approval by the Administrator, shall be incorporated into the permit if approved, and are subject to the permit modification requirements of Section 6 of this Chapter.

(d) The owner or operator shall notify the Administrator, in writing, at least sixty (60) days before plugging a well.

(i) If any changes have been made to the original well-plugging plan, the owner or operator shall also provide the revised well-plugging plan with notice of its intent to plug the well.

(ii) The Administrator may allow a shorter notice period.

(e) Within sixty (60) days after completion of plugging and abandonment of a well or well field, the owner or operator shall submit to the Administrator a final report that includes:

(i) Certification of completion in accordance with approved plans and specifications by a licensed professional engineer or a licensed professional geologist; and

(ii) Certification of accuracy by the owner or operator and by the person who performed the plugging operation (if other than the owner or operator).

Disclaimer: These regulations may not be the most recent version. Wyoming may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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