13 3/8” Casing - Wellhead and BOP Operations - Best Practices
After cementing operation on the 13 3/8" section. Do not attempt to back out the landing joint to let fluid out. The normal procedures consist of cutting two holes and letting the fluid drain and then proceed with cutting the casing.
Rough cut 13 3/8” casing. Refer to the manufacturer installation procedures.
Remove landing joint and diverter stack.
Final cut 13 3/8” casing. Dress cut, and install casing seals.
Change bail arms and service top drive offline.
Nipple up 20 ¾” 3K x 13 5/8” 10K casing spool and 13 5/8” 10K Vetco adapter. Nipple up wing valves and blind flange on casing spool.
Nipple up and Test 13 5/8” 10K BOP stack.
Recommended BOP Configuration
Annular
Rams (3 ½” – 5 ½” Variable)
Rams (Blind/Shear)
Mud Cross
Rams (4 ½” - 7” variable)
BOP test pressures:
Annular: 300 psi 5 min / 3500 psi 10 min (70% WP)
Rams: 300 psi 5 min / 5000 psi 10 min (anticipated WH pressure)
Run two stands of DP (or 5” HWDP if NC50 connections on plug tester) into the hole. Make up the 13 5/8” nominal BOP cup tester onto DP and install ‘Quick Make/ Break saver Sub’.
Note: Open the lower outlets in the wellhead housing.
Lower the BOP tester through BOP stack into the wellhead housing and land off on the 45° shoulder.
Pressure test BOP drilling adaptor/wellhead connections to 5000 psi. Note that a plug tester must be used, as the 13 3/8” casing has been tested to 3000 psi only and has a burst pressure of 5020 psi.