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Control Equipmen BOP

Category: Drilling accessory equipment
Key words:Drilling accessory equipmentControl Equipmen BOP
Service Hotline:+86-513-87635480
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Product description
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Ram Blowout Preventer

Brief Introduction to Ram Blowout Preventer:

The ram BOP is an integral part of well controlequipment, featuring flexible closings and openings,easy operation, safe service and simple maintenance.

1、 Application

The ram BOP is designed to seal off the tubularannulus or the well. With the ram BOP in the closedposition, such operations as circulating drilling fluid, re-leasing pressure and killing the well can be performedby means of the spool beneath the BOP or pipelinesconnected to outlet of the BOP body. Under specialcircumstances, the ram BOP can shear the pipe in thehole to seal off the well. If the ram BOP has variablebore rams, it can seal off the annular space betweenthe casing and the pipes whose sizes are at the mini-mum and maximum of the ram's range.

2、 Structural Features

(1) Body Structure;

1)Shape. The BOP has a body similar to squareshape, having a vertical bore through which the pipescan pass and ram cavities in which the rams move inthe horizontal direction

2)Connection types. The BOP are offered withstudded, flanged and hubbed top and bottomconnections. The sizes of flanges, bolts, clamps andring grooves all conform to API 16A.

(2)Ram structure

For dual-face ram, the upper face and lower faceof the ram are exactly symmetrical. Various drilling toolswith different sizes is only necessary to replace the semi-annular rubber sealing ring and ram compact, the oth-ers can be interchanged;

(3)Seal of Ram

The seal of the ram putting into effect of the pack-ing wellhead must depend on four seals. i.e. the sealbetween the top of the ram and housing, the seal be-tween the fore-end of the ram and the pipeline, the sealbetween the housing and the side-gate and the sealbetween piston rod and the side-gate.

(4)Locking Mechanism of Ram

The manual locking device depends on manpower torotate handwheel to close or lock the rams. It shall benoted that the manual locking device only can be usedto close rams. Be sure to make the manual locking de-vice return to the original position to unlock the ramsbefore opening the rams with hydraulic pressure.

No.

Item

Quantity

Material

Remarks

1

Tightening Axis

4

42CrMo

 

2

Cylinder Cover

4

30CrMo

 

3

Medium Flange

4

25CrNiMo

 

4

Piston

4

42CrMo

 

5

Gate Valve

2

25CrNiMo

 

6

Bolt

16

40CrNiMo

 

7

Shell

1

25CrNiMo

 

 

No.

Item

Quantity

Material

Remarks

1

Ram Body

1

25CrNiMo

 

2

Top Sealing

1

Nitrile Rubber

 

3

Front Sealing

1

Nitrile Rubber

 

 

Technical Parameters:

Item\Type

2FZ23-35

2FZ35-21

2FZ18-35

2FZ28-35

FZ18-35

2FZ35-35

Vertical bore,mm

230

346

180

280

180

346

Working pressure,Mpa

35

21

35

35

35

35

Test pressure,Mpa

70

42

70

70

70

70

Hydraulic pressure,Mpa

8.5-14

8.5-14

8.5-14

8.5-14

8.5-14

10.5

Cylinder diameter,mm

220

220

180

220

180

 

The oil demand when close ram,l

9.5

13.3

9.7

11

4.85

 

The oil demand when close ram,l

8.2

11.7

8.2

9.6

4.1

 

Ram size,in.

Blind、27/8、31/2、41/2、5、51/2

Blind、27/8、31/2、41/2、5、51/2、7、95/8

Blind、27/8、31/2、41/2、

Blind、27/8、31/2、41/2、5、7

Blind、27/8、31/2、41/2、

Blind、27/8、31/2、41/2、5、51/2、7、 95/8

Diameter of bolt circle,mm

393.7

533.4

317.5

482.6

317.5

590.6

Size and guality of bolt,ea ×MM

12×M42

20×M36

12×m36

12×m48

12×m36

12×m42

Pitch diameter of ring groove,mm

269.88

381

211.14

323.85

211.14

408

Operating Requirements:
(1)As blowout happens, full-enclosed ram BOP isable to pack off an empty well or semi-enclosed ram isable to pack off the drilling tool with the same size asthe ram. If long time of well close is necessary, the ramshould be locked up manually and a nameplate shouldbe provided for indication. The wheel is pulled to thestation prior to turned back at 1/4~1/2 circuit.
(2)Before opening rams, check whether the manual locking device is unlocked or not. Every time after open-ing rams, check whether rams are in the full open posi-tion or not in order to prevent pipes from damaging rams
(3)Release pressure in the control manifold before opening or closing the door in order to prevent damageto O-Ring of the hinge. If the door is not in the full openposition or its bolts not installed well, it is not allowed toopen or close rams with hydraulic pressure.

 

BLOWOUT PREVENTER
F-35-70 blowout preventer unit has nominal I.O. of 346.1mm and normal working pressure up to 70Mpa.The unit is composed of Annular Blowout Preventer (NWP 35 Mpa ), single ram blowout preventer , dual-ram preventer and cross joint (NWP70 Mpa ).The unit is designed and built for deep well drilling as well as offshore self-elevating drilling.

Main Technical Parameter

FH35-35/70 annular blowout preventer

working diameter: 346.1mm

normal working pressure: 35Mpa

upper flange gasket ring: BX-160

lower flange gasket ring: BX-159

upper flange connecting bolt: 16-M42 × 3

lower flange connecting bolt: 20-M48 × 3

 

FZ35-70 single-ram

2FZ35-70 dual-ram blowout preventer

working diameter: 346.1mm

normal working pressure: 70Mpa

upper/lower flange gasket ring: BX-159

flange connecting bolt: 20-M48 × 3

Available

Working Pressures (PSI)

Bore Sizes

7-1/16"
(180mm)

9"
(230mm)

11"
(280mm)

13-5/8"
(346mm)

16-3/4"
(426mm)

18-3/4"
(476mm)

20-3/4"
(527mm)

21-1/4" 
(540mm)

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FS35-70 cross joint

working diameter: 346.1mm

normal working pressure: 70Mpa

upper/lower flange gasket ring: BX-159

flange connecting bolt: 20-M48 × 3

side outlet diameter: 78mm(3 1/16")

flange gasket ring: BX-154

flange connecting bolt: 8-M24

 

FSZ35-70 convertible cross joint

normal working pressure: 70Mpa

upper flange working pressure: ?180mm

gasket ring: BX-156

connecting bolt: 12-M39 × 3

lower working diameter: ?346.1mm

gasket ring: BX-159

connecting bolt: 20-M48 × 3

side outlet diameter: 78mm(3 1/16")

flange gasket ring: BX-154

flange connecting bolt: 8-M24

Available

Working Pressures (PSI)

Bore Sizes

7-1/16"
(180mm)

11"
(280mm)

13-5/8"
(346mm)

16-3/4"
(426mm)

18-3/4"
(476mm)

20-3/4"
(527mm)

21-1/4" 
(540mm)

26-3/4"
(680mm)

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