Or. Admin. Code § 632-010-0152
Neither oil or gas may be produced from different strata through the same tubing without the prior approval of the department. The approval of the department will require evidence of adequate and complete separation as ascertained by pressure or circulated tests conducted at the time the packers are set. Subsequently, if packer leakage is suspected, the department may require the permittee to provide proof of adequate and complete separation of the pools involved in the completion, or perform a packer leakage test. The permittee must notify the department prior to performing a packer leakage test so that a representative may be on site to observe. The department may also require the permittee to demonstrate the operation of multiple completion of a well.
Or. Admin. Code § 632-010-0152
Stat. Auth.: ORS 520
Stats. Implemented: ORS 520.095