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Api16c High Quality Ram Bop - China

price: contact company for price

Blowout preventer is an important component assembly of well

control device. It is characterized by

flexible switch, easy operation, safety in use and simple

maintenance, etc. Our Bops are designed as

per the API 16A Specification, with good quality and best

competitive price. Two types of Bop are

offered by JIELIN: Annular Bop and Ram Bop.

Ram BOP is an important equipment widely used in onshore and

offshore drilling. Ram BOP, such as

sing le 「 am BOP, double ram BOP, are mainly hydraulic

operated or manual operated. Ram BOP is

resistant to high- pressure characteristics is used to

prevent blowouts safety oilfield sealing wellhead.

Annular blowout preventer is manipulated by hydraulic

control system. When it is shut off, high pressure oil flows

into piston underside closed cavity through the oil port in

central shell, to push piston upwards, and the conical

surface of piston squeezes rubber core. Due to the

restrictions of head cover, rubber core can’t go upwards

but is pushed towards the center of wellhead until it

enclasps drilling tool or enclose wellhead totally to shut

the well. When well needs to be opened, manipulate the

reversing valve of hydraulic control system, so that high

pressure oil should flow into the open cavity on top of

piston through the oil mouth on shell, to push piston

downwards and decompress closed cavity, in which case, the

extrusion force on the conical surface of rubber core is

removed, and the rubber core is reset gradually with the

action of its own elastic force to open wellhead.


Operating requirements


It’s feasible to control wellhead with annular preventer

firstly when blowout occurs in a well where there are

drilling tools, but try not to seal it for long, because

rubber core is fragile and there is no locking device.

Don’t close empty well with it in non- special cases.

It’s necessary to use a drilling tool with an 18- degree

slope when annular preventer is used for snubbing tripping

operation. Tripping speed should be slow when passing

through joints, and all the rubber sleeves of the drilling

tool should be uninstalled.

When annular preventer is in an off state and shut- in

pressure is below 5Mpa, it’s feasible to move the drilling

tool up and down, but don’t rotate it.

It’s necessary to check whether the well is opened

completely after it is opened every time lest rubber core be


It’s necessary to wash the inner cavity out to keep the

switch flexible after well cementation and leaking stoppage,


Be sure to pay special attention to sealing backing ring and

steel ring groove when installing or uninstalling annular

preventer, which cannot be cracked up or scratched.

After entering the target layer, try to shut in the well

with drilling tool after tripping each time, to check how

well the rubber core seal the well. It should be replaced at

once if not up to standard.

Make regular pressure test on the annular preventer

according to relevant standards.

Company Contact:

  • Phone: 86051586118776

  • Address: No.25,Fourth Road,Jianhu Private Industrial Park, Yancheng, China

  • Email: Email

Published date: May 4, 2015 -

  • Business Description: Jianhu Jielin Petrochemical Machinery Co., Ltd. is located in Jianhu Industrial Park, , Jiangsu Province, known as a land flowing with milk and honey. It is a modern large sized enterprise specialized in researching and developing, manufacturing and selling various oilfield machines and spare parts. Our company has been authorized by China Classification Society for application of ship products and accessories as well as certificates of API 6A, 16A and 16C, etc. We mainly produces API 6A high and middle pressure valves, with the technical performance being that nominal working pressure is PN2.5 105MPa and nominal diameter is DN3 1000mm; in addition, our company also manufactures API 6A wellhead equipment for oil (gas) extraction, choke and kill manifold, mud manifold, drilling accessories and blowout preventer, etc.

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