Service
  • 名称: U Type Ram BOP
  • 英文:

Structual Feature
●  Pressurized components are forging matierals, having good strength and impact toughness, avoid the forging default.
●  Middle flange uses combined seal, its switch is operated by hydraulic pressure, easy to change the ram.
●  Equipped with auxiliary oil cylinder, compared with the traditional shear ram BOP, it has the function, smaller volume.
●  Ram rubber is abundant, and use self-contained seal.
●  Manual locking device belongs to the standard configuration, In the event of hydraulic loss, it can ensure that ram remains closed.
●  Manual and hydraulic locking device and auxiliary oil cylinder can be equiped according to customer's requirements flexibly, and easy to interchange.
●  The internal shell of BOP resistant to low temperature can process pipeline, to make the steam flow inside the BOP, radiat heat. (for costumer’s option).
●  The internal part of BOP resistant to high sulfer which contact the well liquid has Surfaced high nickel base alloy, which can achieve the highest levels of resistance to H2S and CO2.

Ram Assembly
●  Pipe Ram

 
1. Top seal rubber 2. Ram body 3. Front seal rubber  
U type Ram structure skech  

 

Shear Ram
       Shear ram can cut pipe the well, blindly close the wellhead, and also used as blind ram when there is no pipe in the well. The installation of shear ram is the same with the original ram.
●  In the normal condition used as blind ram, in case of emergency, used as shear ram.
●  Shear damper can be repeatedly cut pipe and not damage the blade, The weared the blade can be reused after the repair. Shenkai produces the shear ram with shear life in more than five times, Allowed to replace the sealing rubber.
●  The ordinary ram blade is integrated with the ram body.
●  The ram blade of BOP resistant to high sulfer is separated with the ram body, which is easy to change blade after blade damaged, and make the ram body be able to repeated use.
●  The contact sealing surface between top seal of shear ram and blade is large, which effectively reduce the pressure on the rubber sealing surface, and prolong its life.

1. Down shear ram 2. Set srew 3. Left seal 4. Up blade
5. Top seal rubber 6. Up shear ram body
7. Blade seal 8. Set screw 9. Right seal 10. Down blade
1. Down shear ram body 2. Left seal rubber
3. Up shear ram body 4. Top seal rubber
5. Right seal rubber 6. Blade seal
Shear Ram Assembly Structure of U type Ram BOP resistant to high sulfer Shear Ram Assembly Structure of U type Ram BOP


Variable Ram
       Variable ram can be used to seal different diameter of pipe string. Variable ram is composed of variable ram, top seal, variable front seal. The installation of variable ram in the BOP is in the same as the common ram, don't need to change any part of the BOP.

 
1. Variable Ram rubber 2. Ram body 3. Top seal rubber  
Variable Ram Assembly Structure of U type Ram BOP  

 

 

U Ram BOP Specification&Model

 

Operating pressure
(psi)
Bore(in)
180-7  1/16 230-9 280-11 350-13 5/8 430-16 3/4 480-18 3/4 530-20 3/4 540-21 1/4 680-26 3/4
140-20000 \ \ U \ \ \ \ \ \
105-15000 U U U U \ \ \ \ \
70-10000 U U U U \ U \ U \
35-5000 U U U U U U \ U \
21-3000 U U U U U \ U \ U
14-2000 \ \ \ \ \ \ \ U \

Note:S Ram BOP Specification&Model

 

U represents U type ram BOP

 

Specification&Model Main Bore
mm(in)
Working Pressure
MPa(psi)
Oil quantity for opening (Single Cylinder) Oil quantity for closing(Single Cylinder) Ram Type Ram Size
(in)
Dimension mm weight kg Recommended BOP code
length width height single double
single double
180(71/16 in)series FZ18-352FZ18-35 180(71/16) 35 4.6 4.6 U maximum5 1/2 2477(3273) 550 736 1116 1870 3586 C11.002
C11.00
FZ18-702FZ18-70 180(71/16) 70 4.6 4.6 U maximum5 1/2 2487 (3363) 550 806 1216 2190 4095 C20.002
C20.00
FZ18-1052FZ18-105 180(71/16) 105 4.6 4.6 U maximum5 1/2 2477(3273) 550 832 1242 2215 4066 C08.002
C08.00
280(11in)series FZ28-352FZ28-35 280-11 35 10.6 10.8 U maximum8 5/8 3105 (4165) 650 898 1380 3775 6915 C06.002
C06.00
FZ28-702FZ28-70 280-11 70 10.6 10.8 U maximum8 5/8 3035(4065) 660 950 1430 3900 7115 C09.002
C09.00
FZ28-1052FZ28-105 280-11 105 10.9 11.1 U maximum7 5/8 3035(4396) 820 1205 1840 6660 11750 C01.002
C01.00
FZ28-1402FZ28-140 280-11 140 30.1 26.6 U maximum6 5/8 3890(5104) 1050 1470 2200 9525 16933 C10.002
C10.00
346(135/8 in)series FZ35-352FZ35-35 346(135/8) 35 21 22 U maximum10 3/4 3647(4833) 720 928 1501 5150 9750 C21.002
C21.00
FZ35-702FZ35-70 346(135/8) 70 21 22 U maximum10 3/4 3707(4893) 745 1115 1720 6020 10940 C17.002
C17.00
FZ35-1052FZ35-105 346(135/8) 105 22.8 23.7 U maximum10 3/4 3957(5319) 850 1340 2076 9310 16210 C16.002
C16.00
540(211/4 in)series FZ54-142FZ54-14 540(211/4) 14 16.3 17.4 U maximum 16 4120(5800) 1000 944 1638 7450 14420 C25.002
C25.00
540(211/4 in)series FZ54-352FZ54-35 540(211/4) 35 51 56 U maximum16 4884(6364) 1080 1300 2100 13720 26500 C27.002
C27.00
FZ54-702FZ54-70 540(211/4) 70 51 56 U maximum16 4884(6364) 1200 1742 2542 15718 29773 C28.002
C28.00
680(263/4) FZ68-212FZ68-21 680(263/4) 21 36 37 U maximum20 5305(6646) 1280 1214 1924 13300 24800 C24.002
C24.00
Note 1. BOP Testing pressure is 1.5 times of standard pressure
2. Operating pressure is from 8.4Mpa to 10.5Mpa

 

U Type Shear Ram Operating specification

 

BOP Type BOP model Recommended BOP code Cylinder Type Specification of drill pipe
U (2)FZ28-35 (2)C06.00 Normal cylinder \
(2)C06.00 Cylinder with tandem booster 5 1/2"  24.7lb/ft  G-105  PSL-3
(2)FZ28-105 (2)C01.00 Normal cylinder \
(2)C01.00 Cylinder with tandem booster 5 1/2"  24.7lb/ft  G-105  PSL-3
(2)FZ 35-35 (2)C21.00 Normal cylinder 5"  19.5lb/ft  G-105  PSL-3
(2)C26.00 Cylinder with tandem booster 5 1/2"  24.7lb/ft  S-135  PSL-3
(2)FZ 35-70 (2)C17.00 Normal cylinder 5"  19.5lb/ft  G-105  PSL-3
(2)C30.00 Cylinder with tandem booster 5 1/2"  24.7lb/ft  S-135  PSL-3
(2)FZ 35-105 (2)C16.00 Normal cylinder 5"  19.5lb/ft  G-105  PSL-3
(2)C23.00 Large cylinder 5 1/2"  24.7lb/ft  G-105  PSL-3
(2)FZ 54-35 (2)C27.00 Normal cylinder 6 5/8 "  27.7lb/ft  S-135  PSL-3

 

U Type Variable Ram Range

 

BOP Type BOP Model Range of Variable Ram (in)
U (2)FZ 28-35 2 7/8"-5"
(2)FZ 28-70 2 7/8"-5"
(2)FZ 35-35 2 3/8"-3 1/2" 2 7/8"-5"
(2)FZ 35-70 2 3/8"-3 1/2" 2 7/8"-5"
(2)FZ 35-105 3 1/2"-5" 4 1/2"-5 1/2"
(2)FZ 54-35 2 7/8"-5 7/8"

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