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Annular Blowout Preventer .pdf



Original filename: Annular Blowout Preventer .pdf
Title: Annular Blowout Preventer
Author: www.scotonpetro.com

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Annular Blowout Preventer

DESCRIPTION:
Annular BOP is an important part of well-control equipment. It mainly applies to
control wellheadpressure during drilling workover operations and formation testing
etc to prevent well blowout effectively and realize safe construction. Annular BOP
shall be equipped with hydraulic control system.It is usually used with ram BOP and
also independently.
Principle of Annular Blowout Preventer
Annular BOP is controlled by hydraulic system. When BOP is close, high-pressure oil
enter lower closing cavity of piston from the central oil orifice of shell, which push
the piston coming up. The piston conical surface compress the packing element. As
the limit of the bonnet, packing element can not be pushed up, so it has to be squeezed
towards the wellhead center until hold fast or total closure of wells, to achieve its
purpose of sealing the well.
Tel: +86-029-62827813

www.scotonpetro.com

Email: sales@scotonpetro.com

market@scotonpetro.com Website:

When opening the well, hydraulic control system inject high-pressure oil to opening
cavity of piston, which push piston going down to close pressure relief cavity.
Extrusion force on packing element eliminate, and packing element gradual recover
because if force of flexibility. Then the well is opened.
Application of Annular Blowout Preventer
 It can be used for following operation:
 It can seal any size of annular space with a kind of rubber if there is a drilling tool,
tubing or casing in hole.
 When there is no drilling tool in hole, it can seal the wellhead completely.
 When the well blowout and overflow happens during drilling, coring or well
logging, it can seal the annular spaces between Kelly, coring tools, cable, wireline
and wellbore.
 Under the control of the hydraulic control system which is equipped with a
depressuring pressure regulating valve or a cushion accumulator, it can force
stripping with 18° tool joint.

DETAIL:

Tel: +86-029-62827813

www.scotonpetro.com

Email: sales@scotonpetro.com

market@scotonpetro.com Website:

"Quality first, customer oriented and credit fundamental" is Scoton’s business
conception, it guide us put customer satisfaction always as our main priority. Every
product from customer's inquiry to the delivery, also the after-sales service, we are
follow up closely. Strict quality inspection system ensure our best quality for you, all
kinds of transport channels make the shipment Smooth and quick. Perfect service not
only for the new delivery, also your own products have any problem, we also have
professional engineers for helping, either technical support or maintenance and repair.

Tel: +86-029-62827813

www.scotonpetro.com

Email: sales@scotonpetro.com

market@scotonpetro.com Website:


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