§ 634. Additional requirements for enhanced recovery or saltwater or deleterious substances disposal wells.

A.

Every enhanced recovery or disposal well shall be constructed so as to seal the injection zone from the upper portion of the casing. The annulus between the injection tubing and the casing shall be filled with a noncorrosive fluid, then sealed and a one-quarter (¼) inch female fitting with cutoff valve shall be attached so that the pressure in the annulus may be measured by the Inspector by attaching a gauge having a one-quarter (¼) inch male fitting. The annulus between the production casing and the injection tubing shall be pressure tested to a pressure at least two hundred fifty (250) psi greater than the injection pressure proposed for the well. The pressure testing shall be witnessed and approved by the Inspector. Copies of Corporation Commission Form No. 1015 shall also be filed with the Inspector. A pressure shall be maintained in the annulus sufficient to monitor the fluids in the annulus. Any significant deviation from the established pressure shall be cause to shut down the well, and may result in cancellation of the operating permit, until such time as the established pressure can once again be maintained.

B.

Injection lines for such wells shall be buried in a trench of a depth no less than four (4) feet, and shall be pressure tested (static) annually at a minimum of one hundred fifty (150) percent of the pressure normally encountered at the injection pump discharge for a period of hours to be fixed by the Inspector. Said Inspector shall be notified in writing five (5) days in advance of such test and may supervise same. Test results shall be filed with the Inspector upon completion.

C.

The annulus between the production casing and the surface casing shall be equipped with the appropriate fittings to provide a one-quarter (¼) inch female fitting equipped with a cutoff valve so that the pressure in the annulus may be measured by the Inspector. Any indication of pressure on this annulus shall be cause to shut down the well and may result in the cancellation of the operating permit, until such time as the problem can be corrected.

D.

The permit for an enhanced recovery or disposal well shall state the maximum injection pressure. Exceeding this injection pressure shall be considered a violation of this title.

E.

The injection tubing or injection line near the injection tubing shall be equipped with a one-quarter (¼) inch female fitting and cutoff valve so that the Inspector may measure the injection pressure by the installation of a gauge equipped with a standard one-quarter (¼) inch fitting.

F.

Before performing any down-hole work on an enhanced recovery or disposal well, the operator shall notify the Inspector at least five (5) days in advance of performing this work. The Inspector shall witness the installation of tubing and packer in an enhanced recovery or disposal well. The annulus between the injection tubing and the production casing shall then be pressure tested to a pressure at least two hundred fifty (250) psi in excess of the approved injection pressure. The Inspector shall witness the pressure testing of this annulus. The pressure test shall be repeated at least every six (6) months and shall be witnessed by the Inspector.

G.

The permittee or operator of the well shall submit to the Inspector a monthly report stating the amount of water injected during the month and the maximum tubing pressure.

(Ord. No. 22189, § 1, 1-14-2010)