What issues should be paid attention to during the use of annular blowout preventers?-Jingzhou Jinxiu Machinery Technology Co., Ltd._Plug valve

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What issues should be paid attention to during the use of annular blowout preventers?

Published time:

2021-09-26

What issues should be paid attention to during the use of annular blowout preventers?
After the installation of the annular blowout preventer on site, the zero sealing test is generally not conducted, but the annular sealing test should be conducted as required;
2. According to relevant regulations, try to close the blowout preventer as much as possible and check the sealing effect. If any rubber core failure or other problems are found, it should be replaced immediately;
3. No long-term shut-in operations;
4. When the annular blowout preventer is in a sealed state, it is allowed to slowly move the pipe string up and down, but it is not allowed to rotate the pipe string;
5. It is strictly prohibited to release casing pressure by slightly opening the annular blowout preventer; It is strictly prohibited to use annular blowout preventers as mud scrapers;
When forcibly tripping in and out of the well, only 18 slope butt welded drill pipe joints can be used;
7. After each opening, check whether the rubber core of the annular blowout preventer is open to prevent damage to the rubber core of the annular blowout preventer;
8. The opening and closing of the annular blowout preventer should use standard hydraulic oil and pay attention to maintaining cleanliness;
9. The oil pressure controlled by the sealing fluid should not be too high, and the large oil pressure controlled by the sealing fluid should not exceed 15 MPa. The oil pressure controlled by the sealing fluid generally does not exceed 10:5MPa (10). The spare parts of the rubber core of the annular blowout preventer should be properly stored.

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