Casing seal and blowout preventer tester and test method
Patent
·
OSTI ID:6664237
Method and apparatus are disclosed for testing the pressure integrity of blowout preventers and wellhead casing hanger seals. An annular pressure chamber between the blowout preventer and wellhead casing hanger is formed by closing the blowout preventer on a tubular member having a test plug which seats within and sealingly engages the casing hanger. Pressure sensing means disposed along the length of the tubular member are used to monitor pressure above, below and within the annular chamber. Pressure changes detected by the sensing means are indicative of leakage across the blowout preventer or wellhead casing seal.
- Assignee:
- Exxon Production Research Co.
- Patent Number(s):
- US 4090395
- OSTI ID:
- 6664237
- Country of Publication:
- United States
- Language:
- English
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