초록 ▼

A plug comprising an easily releasable plug body having either a compression set type packer member, cup type sealing member or inflatable packer member, having locking dogs thereon, having sleeve type releasor abutting the locking dogs, having pressure equalization plugger abutting the sleeve type

A plug comprising an easily releasable plug body having either a compression set type packer member, cup type sealing member or inflatable packer member, having locking dogs thereon, having sleeve type releasor abutting the locking dogs, having pressure equalization plugger abutting the sleeve type releasor and a plug body housing.

대표청구항 ▼

A removable plug for temporarily sealing the interior of an annular member to prevent the flow of fluid therethrough, said removable plug comprising: plug body means disposed within said annular member, said plug body means comprising: sealing mandrel means; sealing member means located on the seali

A removable plug for temporarily sealing the interior of an annular member to prevent the flow of fluid therethrough, said removable plug comprising: plug body means disposed within said annular member, said plug body means comprising: sealing mandrel means; sealing member means located on the sealing mandrel means for sealingly engaging the interior of said annular member; locking dog means pivotally mounted on said plug body means for retaining said plug from axial movement in at least one direction in said annular member; dog locking sleeve means abutting the locking dog means in releasable engagement therewith; and pressure equalization plug means abutting the dog locking sleeve means in releasable engagement therewith for allowing the flow of said fluid through said plug, thereby allowing the pressure of said fluid to substantially equalize in said annular member and across said plug before the removal of said plug from said annular member.