Before you displace kill-weight fluid from the wellbore and/or riser to an underbalanced state, you must obtain approval from the BSEE District Manager. To obtain approval, you must submit with your APM, your reasons for displacing the kill-weight fluid and provide detailed step-by-step written procedures describing how you will safely displace these fluids. The step-by-step displacement procedures must address the following:
(a) Number and type of independent barriers, as described in Sec. 250.420(b)(3), that are in place for each flow path that requires such barriers,
(b) Tests you will conduct to ensure integrity of independent barriers,
(c) BOP procedures you will use while displacing kill weight fluids, and
(d) Procedures you will use to monitor the volumes and rates of fluids entering and leaving the wellbore. [77 FR 50900, Aug. 22, 2012]
Permanently Plugging Wells