2d.Rig Components definitions MEH-032016 - RIG COMPONENTS...

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RIG COMPONENTS
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Well Control Kick “an unscheduled entry of formation fluids into the wellbore, of sufficient Quantity to require shutting in the well. Blowout Loss of control of a kick
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30. Preventers (Annular Preventers) This preventer is used the most because the rubber sealing element can conform to any shape or size conduit in the hole. The annular preventer can further collapse completely and seal the annulus with no conduit to the hole. (This is not recommended.)
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30. Preventers (Annular Preventers) The annular preventers consist of a rubber-covered, metal- ribbed sealing element. This element is caused to collapse and seal by allowing the pressurized hydraulic fluid from the accumulator to move a tapered, form-fitted cylinder against the rubber which causes collapse.
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30. Preventers (Annular Preventers) cont. This type preventer is the most versatile because the drill string can be raised, lowered, and rotated while closed.
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31. Ram Preventers - This type BOP is used mainly as a backup to the bag-type preventer or for high-pressure situations.
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