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    Downhole bypass valve
    1.
    发明授权
    Downhole bypass valve 失效
    卧式旁瓣阀

    公开(公告)号：US3901333A

    公开(公告)日：1975-08-26

    申请号：US51829974

    申请日：1974-10-29

    Applicant: GULF RESEARCH DEVELOPMENT CO

    Inventor： MORI ERNEST A

    IPC: E21B21/10 ,  E21B34/00 ,  E21B34/12 ,  E21B17/04 ,  E21B41/00

    CPC classification number: E21B21/103 ,  E21B34/12 ,  E21B2034/002

    Abstract: A downhole bypass valve in which a tubular mandrel is slidable between an upper position and a lower position in a tubular member at the lower end of a drill string. A lateral opening in the tubular mandrel uncovers a port in the tubular member to allow flow between the central bore of the tubular member and the annulus surrounding the drill string. A valve in the bore of the tubular mandrel closes as the tubular mandrel moves to the upper position and opens as the mandrel moves to the lower position. Movement of the mandrel relative to the tubular member is prevented by a ring extending from the outer surface of the tubular mandrel into a liquid-filled chamber in the tubular member until the spring biasing of check valves is overcome to allow flow through passages through the ring.

    Solid particle injector
    7.
    发明授权
    Solid particle injector 失效
    固体颗粒注射器

    公开(公告)号：US3561822A

    公开(公告)日：1971-02-09

    申请号：US3561822D

    申请日：1968-04-25

    Applicant: GULF RESEARCH DEVELOPMENT CO

    Inventor： GAYLORD EBER W ,  GOODWIN ROBERT J ,  MORI ERNEST A ,  PEKAREK JOSEPH L

    IPC: E21B33/068 ,  F04B15/02 ,  F04B53/10 ,  B65G53/30

    CPC classification number: F04B15/02 ,  E21B33/068 ,  F04B53/1002 ,  F04B53/101 ,  Y10T137/7868

    Abstract: AN INJECTOR IN WHICH A SLOW MOVING PLUNGER RECIPROCATES IN A CYLINDER TO INJECT A LIQUID HAVING A HIGH CONCENTRATION OF SOLID PARTICLES SUSPENDED THEREIN INTO A STREAM OF FLUID UNDER A HIGH PRESSURE. THE INLET VALVE OF THE INJECTOR INCLUDES AN INNER, UPWARDLY OPENING VALVE SEAT TAPERING DOWNWARDLY AT 19 TO 23 DEGREES ON WHICH A VALVE BALL SEATS DURING THE PRESSURE STROKE OF THE PLUNGER. THE OPENING AT THE UPPER END OF THE VALVE SEAT HAS A RADIUS SUCH THAT THE SPACE BETWEEN THE SEAT AT ITS UPPER END AND THE BALL IS NOT MORE THAN 0.01 INCH. A DEFORMABLE ANNULAR VALVE SEAL SUPPORTED ON THE UPPER SURFACE OF THE VALVE SEAT SURROUNDING THE TAPERED SURFACE ENGAGES THE VALVE BALL AND HAS A THICKNESS SUCH THAT THE VALVE SEAL EXTENDS ABOVE THE HORIZONTAL CENTERLINE OF THE VALVE BALL WHEN THE BALL RESTS ON THE VALVE SEAT. THIS INVENTION RELATES TO APPARATUS FOR INJECTING SOLID PARTICLES INTO A STREAM OF FLUID UNDER HIGH PRESSURE.

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