PLUG FOR USE IN WELLBORE OPERATIONS AND APPARATUS FOR LAUNCHING SAID PLUG
摘要
An apparatus for launching at least two plugs, said apparatus comprising a mandrel (2), a lower plug (22) and an upper plug (21) releasably disposed with respect to said mandrel (2), wherein said upper plug (21) comprises a body (23) having a flow path (24) therethrough and a cap (25) for blocking fluid flow through said flow path (24) characterised in that said cap (25) is detachable from said body (23) in use if the upper plug (21) is prematurely ejected.
申请公布号
WO9924692(A1)
申请公布日期
1999.05.20
申请号
WO1998GB03280
申请日期
1998.11.04
申请人
WEATHERFORD/LAMB, INC.;LUCAS, BRIAN, RONALD;GUDMESTAD, TARALD;TILTON, FREDERICK, THOMAS