|Min. Order:||1 Piece/Pieces|
|Payment Terms:||L/C, T/T|
|Place of Origin:||Jiangsu, China (Mainland)|
|Means of Transport:||Ocean, Land|
|Usage:||Oilfield drilling operation||Application:||Well flow control|
|Working pressure:||5000 psi||Model:||Hydraulic operated|
|Type:||Double RAM BOP||Szie:||7 1/16"|
|Material:||AISI4130 forged||Temperature rating:||T|
|Standard:||API 16A||Delivery:||40-60 days|
Ram BOP consists of some main parts such as body, side door, cylinder, piston, ram shaft, locking shaft, cylinder head, and ram assembly etc.
Principle of Opening and Closing Operation
When pressure oil of hydraulic pressure system is pumped into the closing cavity of left and right cylinder, it pushes the piston with ram shaft and ram assembly to move to the center realize well sealing. When it pumped into the opening cavity of left and right cylinder, it pushes the piston with ram shaft and ram assembly to move to the center to open the wellhead. The conversion valve of hydraulic pressure system controls the ram switch; Ram switch force is direct ratio with the forced area of piston and the hydraulic pressure on this area.
Principle of Sealing
Ram BOP has 4 sealing parts in order to seal the wellhead effectively. The ram top seal and body seal; sealing between ram front seal and the pipe; sealing between the body and the side door; sealing between ram and the side door. Produce of ram sealing divided into 2 steps. First when closing the ram, ram shaft affected by hydraulic oil pushes ram front seal rubber to press the front part of sealing Second when there is pressure in the well, it pushes the ram front seal from back part of ram to extrude distortion more deeply, at the same time, the ram up against the body seal face, thus forming reliable sealing. This is called well pressure assisting sealing.
7 1/16-5000PSI Double Ram BOP
7 1/16-5000PSI R46 Flange
7 1/16-5000PSI R46 Flange
Hydraulic Control Pressure
Hydraulic Fluid (open)
1.40 gal (5.3L)
Hydraulic Fluid (close)
The medium inside well flows out from the clearance between the body and door.
Seal ring between the body and side door is damaged.
Connection bolts released between the body and side door.
There is dust or damage on the body and side door seal surface.
Screw up all
Remove surface dust and repair damaged parts.
Ram movement direction is not conformance with nameplate mark of control valve.
The pipelines between
control panel and BOP have been connected wrongly.
Reverse pipes that connect BOP.
Hydraulic system is in order, but ram can not closed fully.
There are foreign materials, sand and mud on ram contact ends.
Wash ram and side door.
The medium inside well flows into the cylinder and there contains water in cylinder oil.
Piston rod seal ring
Piston rod distortion or surface scratch.
Change damaged piston piston rod seal ring.
Repair the damaged
BOP hydraulic part cannot hold pressure.
BOP cylinder, piston, piston rod, seal ring damaged, seal surface scratched.
Replace all damaged seal rings and repair seal surface or change it with the new parts.
There is leakage on side door connections.
Seal surface scratched, seal ring worn.
Repair seal surface and replace seal ring.
It cannot hold pressure when ram closed.
Ram seal rubber damaged.
Upper seal surface of the ram chamber damaged.
The ram size is not in accordance with the
drilling tool in the well.
Change ram seal rubber.
Repair seal surface.
Change the relevant
Control pipe is in order, but ram cannot he opened with hydraulic pressure.
The locking shaft isn't unlocked.
Ram plugged with sand and mud.
Piston seal ring damaged.
Unlock locking shaft. If damaged, change it.
Remove sand and
mud. Increase control
Change piston seal ring.