Description
2 7/8"-5"VBR and 4 1/2"-7" VBR ram assembly
What is a BOP 2 7/8“-5” and 4 1/2-7"VBR ram assembly
During the BOP sealing well process, the 2 7/8 "-5" VBR can enclose both 2 7/8 "drill pipe and 5" drill pipe, and theoretically can also enclose 4 "and 4 1/2" drill pipe, and the metal skeleton can be freely expanded and changed size when it meets the drill pipe.
The 4 1/2 "-7" VBR can seal 4 1/2 ", 5 ", 5 1/2 ",7 "drill pipe
What is the material of variable Ram assembly（VBR）
Rubber： NBR or HNBR
Ram Block：4130 or F22
If the concentration of hydrogen H2s sulfide is higher than 5%, HNBR and F22 should be used
Where is the VBR used in
It is used in shaffer BOP 13 5/8"-5000PSI,13 5/8"10000PSI double Ram BOP and Single Ram BOP,shaffer type BOP and Cameron U type BOP.
Who Use this variable Ram assembly（VBR）
Drilling rig in Kuwait,UAE,Iran,Saudi Arabia, Qatar, Libya, the United States
Who can manufacture the 2 7/8"-5"VBR and 4 1/2"-7" VBR ram assembly
Cangzhou Fengliang Petroleum Machinery Co.,Ltd Can produce it
