Statutes, codes, and regulations
Wyoming Administrative Code
Agency 020 - Environmental Quality, Dept. ofSubagency 0011 - Water Quality
Chapter 24 - CLASS VI INJECTION WELLS AND FACILITIES UNDERGROUND INJECTION CONTROL PROGRAM
Section 24-13 - Mechanical integrity

020-24 Wyo. Code R. § 24-13

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Current through April 27, 2019
Section 24-13 - Mechanical integrity

(a) A Class VI well has mechanical integrity if:

  • (i) There is no significant leak in the casing, tubing or packer; and
  • (ii) There is no significant fluid movement into a USDW through channels adjacent to the injection well bore.

(b) To evaluate the absence of significant leaks under paragraph (a)(i) of this section, owners or operators must, following an initial annulus pressure test, continuously monitor injection pressure, rate, injected volumes, and pressure on the annulus between tubing and long string casing and annulus fluid volume as specified in Section 12(e) and (f);

(c) At least once per year, the owner or operator must use one of the following methods to determine the absence of significant fluid movement under subparagraph (a)(ii) of this section:

  • (i) An approved tracer survey such as an oxygen-activation log; or
  • (ii) A temperature or noise log.

(d) If required by the administrator, at a frequency specified in the testing and monitoring plan required in Section 14 of this chapter, the owner or operator must run a casing inspection log to determine the presence or absence of corrosion in the long-string casing.

(e) The administrator may require any other test to evaluate mechanical integrity under paragraph (a)(i) or (a)(ii) of this section. Also, the administrator may allow the use of a test to demonstrate mechanical integrity other than those listed above, with the written approval of the US EPA regional administrator.

  • (i) To obtain approval, the administrator must submit a written request to the US EPA regional administrator that must set forth the proposed test and all technical data supporting its use.

(f) In conducting and evaluating the tests enumerated in this section or others to be allowed by the administrator, the owner or operator and the administrator must apply methods and standards generally accepted in the industry.

  • (i) When the owner or operator reports the results of mechanical integrity tests to the administrator, he/she shall include a description of the test(s) and the method(s) used.
  • (ii) In making his/her evaluation, the administrator must review monitoring and other test data submitted since the previous evaluation.

(g) The administrator may require additional or alternative tests if the results presented by the owner or operator under paragraph (e) of this section are not satisfactory to the administrator to demonstrate that there is no significant leak in the casing, tubing or packer, or significant movement of fluid into or between USDWs resulting from the injection activity as stated in paragraphs (a)(i) and (a)(ii) of this section.

020-24 Wyo. Code R. § 24-13

Amended, Eff. 7/25/2016.