发明名称 |
VARIABLE BORE RAM |
摘要 |
A ram type blowout preventer includes variable ram packers for sealing about tubulars of different outside diameters in the bore of the preventer housing or about a single tubular having a variable outside diameter. Each ram packer includes a body of elastomeric material formed about vertical rib s to conform to tubular having variable OD within a certain range.
|
申请公布号 |
CA2472792(A1) |
申请公布日期 |
2005.01.11 |
申请号 |
CA20042472792 |
申请日期 |
2004.07.02 |
申请人 |
VARCO I/P, INC. |
发明人 |
MELANCON, JEFFREY T.;MCWHORTER, DAVID J. |
分类号 |
E21B33/06;(IPC1-7):E21B33/06;E21B33/12 |
主分类号 |
E21B33/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|