4 Va. Admin. Code § 25-150-615

Current through Register Vol. 41, No. 8, December 2, 2024

Section 4VAC25-150-615 - Pressure testing requirements for production casing in coalbed methane gas wells

A. The operator shall install casing that can withstand the effects of tension and can prevent leaks, burst, and collapse during (i) the casing's installation and cementing and (ii) subsequent drilling and producing operations.

B. Except as provided in subsection C of this section, all casing must be a string of new pipe with an internal pressure rating that is at least 20% greater than the anticipated maximum pressure to which the casing will be exposed.

C. Used casing may be approved for use as surface, intermediate, or production casing but shall be pressure tested after cementing and before completion. A passing pressure test is holding the anticipated maximum pressure to which it will be exposed for 30 minutes with not more than a 10% decrease in pressure.

D. New or used plain end casing, except when being used as conductor pipe, that is welded together for use must meet the following requirements:

1. The casing must pass a pressure test by holding the anticipated maximum pressure to which the casing will be exposed for 30 minutes with not more than a 10% decrease in pressure. The operator shall notify the department electronically at least 24 hours before conducting the test. The test results shall be entered on the drilling report.

2. The casing shall be welded using at least three passes with the joint cleaned between each pass.

E. The provisions of this section shall not apply to gob wells.

4 Va. Admin. Code § 25-150-615

Adopted, Virginia Register Volume 33, Issue 07, eff. 12/28/2016.

Statutory Authority: §§ 45.1-161.3, 45.1-361.4, and 45.1-361.27 of the Code of Virginia.