摘要:
A blowout preventer with at least one movable bonnet and an operating cylinder which may be moved outwardly from the body of the preventer to a ram-exposed position by fluid pressure in an operating cylinder and piston so that a ram in the preventer is accessible for replacement or repair, and having locking means to lock the piston to the body of the blowout preventer.
摘要:
A method and apparatus for a production tubing safety valve having a rotatable ball closure means for shutting in a well at a subsurface location which is operable in response to fluid pressure in an annular area between the production tubing and the well casing. The valve mounts means for sealing the annular area adjacent the valve wherein the differential pressure urging established across said seal communicated to the valve effects operation thereof and means for mounting the valve with the well casing for supporting the valve in the well. The safety valve may be releasably locked in the open position when a directional pressure is communicated thereto through the production tubing.
摘要:
An alternating valve well tool and method relating thereto having a ball-type closure member which is rotatable between open and closed positions in response to the urging of a controlled sequence of preselected fluid pressure changes in the well for shutting in the well at a subsurface location when desired.
摘要:
Cored and peeled pineapples, split or halved axially into half spheroids, are fed through segmenting, slicing and usually also recoring operations in the form of a column of end-to-end half spheroids lying flat face down on supporting means having a longitudinal guiding rib slidably engaged by the aligned longitudinal grooves formed by the initial coring operation. Positive feeding of the half spheroids to and through the slicing and recoring operations is provided by a scroll feeder near the head of the column having lateral engagement with the leading half spheroids which have been segmented except for a small amount of unsegmented material immediately adjacent to the core hole, prior to reaching the scroll. The advancing head of the column leaving the scroll is sliced transversely at intervals which provide partially segmented slices of the desired thickness. The advancing head of the column is then recored producing the desired chunks by severing the segments from the ring of material adjacent to the core hole which held the pieces together through the slicing operation.
摘要:
A non-rotating ram rod locking assembly for a blowout preventer having a new and improved means for locking the ram in its sealing position, and means for preventing rotation of the ram rod itself during actuation of the locking assembly.
摘要:
A drilling tool connected in a drilling string includes a pressure responsive rotatable ball valve for enabling drilling fluid flow down the bore of a drill string which automatically rotates closed for blocking flow through the bore of the drill string when incipient pressure conditions indicate the direction of flow through the bore may be reversed. Means for releasably locking the ball in the open position in response to a preselected directional pressure to enable the running of other tools and the like through the bore of the drilling string are provided. The drilling tool may be employed for controlling an undesired flowing stream of fluid from the bore of the drilling string by stabbing the tool to connect with the drilling string utilizing a stabbing member which is removed after connecting to enable the ball valve to rotate closed to control the flowing stream.
摘要:
The constriction of a packer or other tool about a pipe string being run in a well is altered in such manner while a pipe joint is passing through the packer as to facilitate rapid running of the string in a well and to reduce wear of the packer.
摘要:
The disclosure concerns unusually advantageous apparatus used in controlling and preventing well blowouts, and utilizing novel plug-valve sealing and operating structure, and further as related to the location and housing of an inwardly constrictable packer annulus.