1. (a) Pressure testing required under Section 1726.6 shall be conducted according to the following parameters:

   1. (1) Pressure testing shall be conducted with a liquid unless the Division approves pressure testing with gas.
   2. (2) If pressure testing will be conducted with a liquid that contains additive other than brine, corrosion inhibitors, or biocides, then the operator shall consult with the Division regarding the contents of the liquid prior to commencing testing.
   3. (3) The wellbore shall be filled with a stable column of fluid that is free of excess gasses.
   4. (4) Pressure tests shall be recorded and a calibrated gauge shall be used that can record a pressure with an accuracy within one percent of the maximum allowable injection pressure.
   5. (5) Pressure tests shall be conducted at an initial test pressure of at least 115 percent of the maximum allowable injection pressure at the wellhead.
   6. (6) The pressure test shall be continuous for one hour. A pressure test is successful if the pressure gauge does not show more than a 10 percent decline from the initial test pressure in the first 30 minutes, and does not show more than a 2 percent decline from the pressure after the first 30 minutes in the second 30 minutes.
2. (b) The Division may modify the testing parameters on a case-by-case basis if, in the Division's judgment, the modification is necessary to ensure an effective test of the integrity of the casing.

Note: Authority cited: Sections 3013, 3106 and 3180, Public Resources Code. Reference: Sections 3106, 3180, 3181, 3220 and 3403.5, Public Resources Code.

History

1. New section filed 6-28-2018; operative 10-1-2018 (Register 2018, No. 26).

2. Amendment filed 5-1-2025; operative 7-1-2025 (Register 2025, No. 18).