Improved adaptor

Abstract

There is provided a system for mounting an operative element (17) to a downhole tubular (12), the downhole tubular (12) having a longitudinal axis, the system comprising a releasable mandrelless tubing mount (14) wherein the tubing mount (14) is configured to be located at an axial location on the tubular (12) and is adapted in use to be substantially immobile and to interact with an operative element (17) configured to perform a function downhole.

1 . A system for mounting an operative element to a downhole tubular, the downhole tubular having a longitudinal axis, the system comprising a releasable mandrelless tubing mount wherein the tubing mount is configured to be located at an axial location on the tubular and is adapted, in use, to be substantially immobile and to interact with an operative element configured to perform a function downhole. 
     
     
         2 . The system of  claim 1  further comprising a second releasable mandrelless tubing mount. 
     
     
         3 . The system of  claim 1  wherein the or each releasable mandrelless tubing mount further comprises a mount housing, at least one slip, a load sub and a load retainer. 
     
     
         4 . The system of  claim 1 , further comprising an assembly device configured to engage the mount(s) to provide preloading and secure the mount(s) to the outer surface of the tubular. 
     
     
         5 . The system of  claim 4 , wherein the or each releasable mandrelless tubing mount further comprises a mount housing, at least one slip, a load sub and a load retainer and the assembly device comprises a push sub configured to abut the load sub(s) of the mount(s). 
     
     
         6 . The system of  claim 5 , wherein the assembly device further comprises a cavity between a piston housing and a mount piston, wherein the cavity is configured to receive pressurised fluid. 
     
     
         7 . The system of  claim 6 , wherein the piston housing is configured to move in a first direction, and the mount piston and push sub are configured to move in a second direction opposite to the first direction. 
     
     
         8 . The system of  claim 7 , wherein the assembly device is further configured to abut and move the load sub of the mount in the second direction. 
     
     
         9 . The system of  claim 8 , wherein the piston housing is configured to engage the mount housing and exert a pulling force on the mount housing to squeeze the at least one slip between the mount housing and the load sub. 
     
     
         10 . The system of  claim 1 , further comprising an operative element mounted in use to the tubing mount. 
     
     
         11 . The system of  claim 2 , further comprising an operative element mounted in use between the first and second tubing mounts. 
     
     
         12 . The system of  claim 10 , configured such that, in use, the operative element is in fluid communication with a bore of the tubular. 
     
     
         13 . The system of  claim 10 , wherein the operative element is movable in response to an axial force. 
     
     
         14 . The system of  claim 10 , wherein the operative element comprises a fixed element portion, an axially movable portion and a transversely movable portion coupled between the fixed element portion and the axially movable portion. 
     
     
         15 . The system of  claim 14 , wherein the fixed element portion includes a shear element having a yield strength sufficient to allow the fixed element to be transversely displaced to an engaged configuration and to shear in response to an axial force applied to the tubular when in the engaged configuration, and allow the transverse portion to retract whereby the mandrelless tool can be retrieved. 
     
     
         16 . A system for mounting an operative element to a downhole tubular, the system comprising a mandrelless tubing mount wherein the tubing mount is configured to be located at an axial location on the tubular and is adapted in use to be substantially immobile and to interact with an operative element configured to perform a function downhole. 
     
     
         17 . The system of  claim 16 , further comprising a second mandrelless tubing mount, wherein the tubing mounts are configured to be located at and axially spaced on the tubular and adapted in use to be substantially immobile and to interact with an operative element configured to perform a function downhole. 
     
     
         18 . The system of  claim 16 , wherein the or each mount comprises a mount housing, at least one slip, a load sub and a load retainer. 
     
     
         19 . A mandrelless tool for mounting on a tubular, the tubular having a longitudinal axis, the tool comprising:
 a first tubing mount for releasably locating at a first axial location on the tubular,   at least one operative element coupled to the first tubing mount, the/each operative element being configured to perform a function downhole.   
     
     
         20 . The tool of  claim 19 , further comprising a second tubing mount for locating axially spaced from the first tubing mount, the second tubing mount coupled to the operative element.