Hydraulic operated double ram Blowout preventer(BOP) API16A Admin Edit

1.0 USD
MOQ: 1 Piece/Pieces
término comercial: FOB,CFR,CIF
Términos de pago: L/C, T/T
Lugar de origen: Jiangsu, China (Mainland)
medios de transporte: Ocean, Land
capacidad de producción: 10sets/months
embalaje: plywood fecha de entrega: 50days
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

Working Principle

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.


Specification

Product Name

7 1/16-5000PSI Double Ram BOP

Vertical Bore  

7 1/16

Working Pressure  

5000PSI

Top Connection

7 1/16-5000PSI  R46  Flange

Bottom Connection

7 1/16-5000PSI  R46  Flange

Hydraulic Control Pressure 

1200PSI~1500PSI(8.4Mpa~10.5MPa)

Hydraulic Fluid (open)

1.40 gal (5.3L)

Hydraulic Fluid (close)

1.45gal (5.5L)

Hydraulic Connection

1" NPT

Outside Size

53.93″x15.55″x28.46″

Weight

1795 lb



Trouble Shots


Item


Trouble

Cause

Settlement

1

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.

Change damaged

seal ring.

Screw up all

connection bolts.

Remove surface dust and repair damaged parts.


2

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.

3

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.

4

The medium inside well flows into the cylinder and there contains water in cylinder oil.

Piston rod seal ring

damaged.

Piston rod distortion or surface scratch.


Change damaged piston piston rod seal ring.

Repair the damaged

piston rod.

5

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.

6

There is leakage on side door connections.

Seal surface scratched, seal ring worn.

Repair seal surface and replace seal ring.

7

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

size ram.

8

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

pressure.

Change piston seal ring.



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