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公开(公告)号：GB2457334A8
公开(公告)日：2012-09-12
申请号：GB0903362
申请日：2007-08-21
Applicant: WEATHERFORD LAMB
Inventor： FISHER JERRY W , REDLINGER THOMAS M , WILSON CARL J , LAIRD MARY L
Abstract: Apparatus and methods for selectively releasing a first wellbore component to a second wellbore component using a disconnect device. The method includes coupling a disconnect device to a workstring and a downhole tool; performing a downhole operation using the downhole tool, and selectively releasing an upper portion of the disconnect device from a lower portion of the disconnect device, thereby releasing the downhole tool from the workstring. The method may also include reconnecting the upper portion of the disconnect device to the lower portion of the disconnect device. The disconnect device is capable of transferring torque to the wellbore component.
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公开(公告)号：CA2486682A1
公开(公告)日：2003-12-04
申请号：CA2486682
申请日：2003-05-19
Applicant: WEATHERFORD LAMB
Inventor： LAIRD MARY L , TEALE DAVID W , SHAW JOEL D
Abstract: The present invention provides a method and an apparatus for use in a wellbo re tool. The apparatus includes a body (115) and a sliding member (155), wherei n the sliding member and a mechanical portion (250) moves between a first position and a second position. A valve assembly (210) causes the sliding member and mechanical portion to shift to its second position at a predetermined flow rate of fluid through the body. The invention also provid es an apparatus for a downhole tool that includes a mandrel and a sliding membe r disposed on the mandrel. The sliding member including a plurality of fingers (285) and a plurality of heads (275), wherein the plurality of fingers are slideably recessed within a plurality of longitudinal grooves (355). The invention further provides a collet assembly that includes a body and at lea st two extendable members (275), whereby as the members extend outward, the members are rotated.
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