Detailed Product Description

API BOP(blowout preventer,oil equipment)

1) The annular BOP can be used to seal off a well where the drill pipe is in use if the well blowout. However, the annular BOP cannot be closed for a long time, because the packing unit is easy to be damaged and the BOP itself has no locking mechanism. 
(2) It is necessary to use a drilling tool with 18°bevel when running/retrieving drill of operation with BOP, running/retrieving drill should be slow pass through the nipple and all the rubber protecting collar on the drilling tool should be discharged off.
(3) With the annular BOP in the closed position and shut-in pressure kept below 5MPa, the string can be moved either up or down, but mustnt be rotated.
(4) It is forbidden to open the annular BOP to relieve the pressure out of the well to avoid rubber core damage.
(5)Be sure to check whether the annular BOP is in the full open position or not every time after opened in order to prevent damage to the packing unit.
(6) Clean the inside of the BOP after well cementing operation is completed in order to keep its closings and openings flexible. 
(7) More attention shall be paid to ring gaskets and gasket grooves during installation of the BOP or its removal from the service.
(8) After entering the destination layer, running/retrieving drill once should be accompanied with test of well-enclosed with drilling tool once, and inspect the effect of well enclosed with rubber core, if beyond the requirement, it should be replaced. 
(9) Periodically perform pressure test on the annular BOP in accordance with applicable standards