Apparatus and method for mitigating wear in downhole tools

Details Apparatus and method for mitigating wear in downhole tools Apparatus and method for mitigating wear in downhole tools

E - Fixed Constructions

21

B

E21B 10/46 (2006.01) E21B 17/10 (2006.01)

Patent

CA 2326738

A down hole tool (4) has a gauge (5) that has a surface strengthened by a super hard material (6). The super hard material (6) is fixed to the surface of the down hole tool (4), at least temporarily prior to spray fusing. This is achieved by the use of a high temperature adhesive. The super hard material (6) may also be combined with an electrically conductive component and welded on to the down hole tool (4) surface thereafter. The super hard material may also be held in place by a mesh framework, which is fixed to the surface of the tool (4). A binding material is then spray fused around the super hard material (6) to provide a permanent binding medium for the super hard material (6) to the surface of the down hole tool (4).

L'invention concerne un outil de fond (4) muni d'une jauge (5) ayant une surface renforcée par un matériau extra-dur (6) fixé à la surface de l'outil de fond (4), au moins temporairement avant la fusion par projection, à l'aide d'un adhésif haute température. Le matériau extra-dur (6) peut être combiné à un composant électroconducteur et être ensuite soudé sur la surface de l'outil de fond (4) ou bien être maintenu en place par une structure en maille fixée à la surface de l'outil (4). On fait ensuite fondre un liant par projection autour du matériau extra-dur (6) afin de fournir un milieu de liaison permanent pour le matériau extra-dur (6) à la surface de l'outil de fond (4).

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