BOP stacks Annular BOP Ram BOP

Blowout preventer Cameron Shaffer Hydril

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blow-out preventer (BOP)
BOP is shut in the well for oil testing,workover, well completion and operating process to prevent the blowout accident,totally enclosed and semi-closed two functions into one, has a simple structure,easy to operate, resistant to high-pressure characteristics is used to preventblowouts safety oilfield sealing wellhead.
Oil drilling, installed at thewellhead casing head, used to control the high pressure oil, gas, water blowout.Wells of oil and gas pressure is high, the BOP can be the wellhead closed(shut). The shutter has four, alternatively bullied invaded mud, increasing thepressure of the borehole fluid column, so as to suppress the high-pressure oiland gas discharged from the drill pipe is pressed into the heavy mud.
Itstype sub-ordinary blowout preventer, of universal blowout preventers androtating blowout preventer. Ordinary BOP ram with full-and semi-closure, fullclosure type blowout preventer can seal the entire wellhead; semi-sealed shutwellhead annular cross-section of drill pipe exists. Universal BOP can start incase of emergency to cope with any size drill and empty wells; the rotating BOPside spray edge drilling operations. In addition to the outside two ordinaryBOP, plus Universal BOP, rotating BOP, so three or four combinations installedat the wellhead deep drilling often. [1] annular BOP
Annular BlowoutPreventer
  Annular BOP
Large gate, usually fitted with a ram type blowoutpreventer operation to form a sealed annular space between the tubing string andthe wellbore in the well, baa case of a column-plugging can also be doneindividually, but used several times to die, and does not allow the use oflong-term shut-in.
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Main criteria

SY / T 5053.1 -2000 BOP and control device BOP SY / T 5053.2-2007 drillingwellhead control equipment and the shunt device control systemspecification
SY / T 6160-2008 BOP inspection and maintenance

Three four-way fluid transfer valve 12 / Box
720mm x 720mm x 260mm157KG

Crankshaft piston pump / box of 3 boxes
860mm x 510mm x 470mm 185KG

Gate BOP35/35 1 / box 2 boxes
2550mm x 1050mm x1160mm 3080KG

Ring-shaped BOP35/35 1 units / box 2 boxes
1430mm x 1430mm x1680mm6550KG

Accumulator 10 / box of 6 boxes
1760mm x 1020mm x780mm 440KG

Blowout preventer Cameron Shaffer Hydril