A downhole apparatus and a method at a downhole location

Abstract

An apparatus and a method for at least partially cracking a frangible material in a portion (B) between a first tubular and a second tubular comprises one or more impact devices arranged and configured to impart one or more mechanical impacts to said material. The at least one impact device may comprise a vibration generator A plurality of impact devices may be arranged in the same plane, and several impact devices may be arranged in multiple planes. In the method, one or more mechanical impacts are imparted until cracks or fissures form in the material.

1 . A one-trip downhole tool, configured to be arranged at a location in a first tubular, comprising:
 a tool having a plurality of drilling tools or milling tools configured for forming holes in the first tubular; and   an apparatus for at least partially cracking a frangible material in a portion between said first tubular and a second tubular, said first tubular arranged inside said second tubular, wherein said apparatus comprises one or more impact devices arranged and configured to impart one or more mechanical impacts to said frangible material.   
     
     
         2 . The tool of  claim 1 , wherein the plurality of drilling tools or milling tools are arranged in a same plane substantially perpendicular to a longitudinal axis of the tool. 
     
     
         3 . The tool of  claim 2 , wherein the plurality of drilling tools or milling tools are arranged in multiple planes substantially perpendicular to the longitudinal axis, and wherein each plane of the multiple planes comprises two or more drilling tools or milling tools. 
     
     
         4 . The tool of  claim 1 , wherein at least one impact device of the one or more impact devices comprises a vibration generator. 
     
     
         5 . The tool of  claim 1 , wherein a plurality of the one or more impact devices are arranged in a same plane, substantially perpendicular to a longitudinal axis of the apparatus. 
     
     
         6 . The tool of  claim 5 , wherein the one or more impact devices are arranged in multiple planes substantially perpendicular to the longitudinal axis, and wherein each plane of the multiple planes comprises two or more impact devices. 
     
     
         7 . The tool of  claim 1 ,
 wherein the plurality of drilling tools or milling tools are arranged in penetration unit planes substantially perpendicular to a longitudinal axis of the tool, and wherein each of the penetration unit planes comprises two or more drilling tools or milling tools;   wherein a plurality of the one or more impact devices are arranged in crushing tool planes substantially perpendicular to the longitudinal axis of the tool, and wherein each of the crushing tool planes comprises two or more impact devices; and   wherein a first distance between the penetration unit planes is identical with a second distance between the crushing tool planes.   
     
     
         8 . The tool of  claim 1 , wherein the one or more impact devices may be operated independently of each other. 
     
     
         9 . The tool of  claim 1 , further comprising a flow manifold housing comprising movable abutment members which may be extended to support the apparatus against a tubular wall, or wherein the abutment members are arranged on a housing of the apparatus. 
     
     
         10 . The tool of  claim 9 , wherein the housing of the apparatus and the flow manifold housing are integrated into one housing. 
     
     
         11 . The tool of  claim 1 , wherein the plurality of drilling tools or milling tools comprise bores configured for injecting a sealant material from a manifold. 
     
     
         12 . A method of depositing a sealant material at a downhole location, comprising:
 forming one or more openings in a section of a first downhole tubular;   at least partially cracking a frangible material in a portion between the first downhole tubular and a second downhole tubular, the first downhole tubular arranged inside the second downhole tubular, imparting one or more mechanical impacts to at least a portion of the frangible material until cracks or fissures form in the frangible material, whereby a space is formed between the tubulars; and   filling the sealant material into the space.   
     
     
         13 . The method of  claim 12 , wherein forming one or more openings, at least partially cracking the frangible material, and filling the sealant material are performed in a single downhole trip. 
     
     
         14 . The method of  claim 12 , wherein forming one or more openings, at least partially cracking the frangible material, and filling the sealant material are performed independently, in separate trips. 
     
     
         15 . The method of  claim 12 , wherein the one or more mechanical impacts are vibrations. 
     
     
         16 . The method of  claim 12 , wherein at least partially cracking the frangible material is performed by one or more impact devices of a downhole tool. 
     
     
         17 . The method of  claim 12 , wherein the sealant material comprises concrete or another material having similar frangible material characteristics. 
     
     
         18 . The method of  claim 12 , wherein the one or more mechanical impacts are imparted directly to the frangible material. 
     
     
         19 . The method of  claim 12 , wherein the one or more mechanical impacts are imparted to the frangible material indirectly, by imparting the impacts to an inner wall of the first downhole tubular.