Enhanced cooling during washover operation

Abstract

Some implementations include an apparatus comprising a first tubular having a number of radial cutters disposed circumferentially along one end, wherein a cutter slot is formed between each pair of radial cutters. The apparatus further comprises a plurality of bypass channels disposed along an outer diameter of the first tubular, wherein each cutter slot leads into a bypass channel.

1 . An apparatus comprising:
 a first tubular having a number of radial cutters disposed circumferentially along one end, wherein a cutter slot is formed between each pair of radial cutters; and   a plurality of bypass channels disposed along an outer diameter of the first tubular, wherein each cutter slot leads into a respective bypass channel.   
     
     
         2 . The apparatus of  claim 1 , wherein each bypass channel of the plurality of bypass channels includes a smaller outer diameter than the outer diameter of the first tubular, and wherein the plurality of bypass channels allow at least one of a first wellbore fluid and cuttings material to flow around the first tubular. 
     
     
         3 . The apparatus of  claim 1 , wherein at least a portion of the bypass channels merge into a larger flow area around the first tubular. 
     
     
         4 . The apparatus of  claim 1 , wherein each bypass channel is a helical bypass channel. 
     
     
         5 . The apparatus of  claim 1 , wherein each bypass channel is a straight bypass channel. 
     
     
         6 . The apparatus of  claim 1 , wherein each cutter slot includes a first side and a second side, and wherein at least one of the first side and the second side are substantially oriented with a longitudinal axis of the first tubular. 
     
     
         7 . The apparatus of  claim 6 , wherein at least one of the first side and the second side of each cutter slot are oriented at a lead angle. 
     
     
         8 . A system comprising:
 a casing string cemented within at least one wellbore formed in one or more subsurface formations;   a wash pipe coupled to a first tubular, wherein the first tubular includes, a number of radial cutters disposed circumferentially along one end, wherein a cutter slot is formed between each pair of radial cutters; and
 a plurality of bypass channels disposed along an outer diameter of the first tubular, wherein each cutter slot leads into a respective bypass channel. 
   
     
     
         9 . The system of  claim 8 , wherein each bypass channel of the plurality of bypass channels includes a smaller outer diameter than the outer diameter of the first tubular, and wherein the plurality of bypass channels allow at least one of a first wellbore fluid and cuttings material to flow within an annulus between the casing string and the first tubular. 
     
     
         10 . The system of  claim 8 , wherein at least a portion of the bypass channels merge into a larger flow area around the first tubular. 
     
     
         11 . The system of  claim 8 , wherein each bypass channel is a helical bypass channel. 
     
     
         12 . The system of  claim 8 , wherein each bypass channel is a straight bypass channel. 
     
     
         13 . The system of  claim 8 , wherein each cutter slot includes a first side and a second side, and wherein at least one of the first side and the second side are substantially oriented with a longitudinal axis of the first tubular. 
     
     
         14 . The system of  claim 13 , wherein at least one of the first side and the second side of each cutter slot are oriented at a lead angle. 
     
     
         15 . A method comprising:
 performing an equipment retrieval operation of a device in at least one wellbore formed in one or more subsurface formations, the equipment retrieval operation including,
 cutting, via rotation of a first tubular, one or more support structures of the device, wherein the first tubular includes a number of radial cutters disposed circumferentially along one end, and wherein a cutter slot is formed between each pair of radial cutters; and 
 cooling, via fluid flow through one or more bypass channels disposed along an outer diameter of the first tubular, the first tubular during the cutting, wherein each cutter slot leads into a respective bypass channel. 
   
     
     
         16 . The method of  claim 15 , further comprising:
 altering a quantity of cutter slots disposed on the first tubular; altering a depth of each cutter slot; and   altering a width of each cutter slot, wherein each cutter slot feeds into a bypass channel of the one or more bypass channels.   
     
     
         17 . The method of  claim 15 , further comprising:
 determining a geometry of the one or more bypass channels, wherein at least a portion of the bypass channels include helical bypass channels and wherein at least a portion of the bypass channels include straight bypass channels; and   moving, via the rotation of the first tubular, at least a wellbore fluid and cuttings material through the one or more bypass channels, wherein each bypass channel of the one or more bypass channels includes a smaller outer diameter than the outer diameter of the first tubular.   
     
     
         18 . The method of  claim 17 , wherein moving, via the rotation of the first tubular, at least the wellbore fluid and the cuttings material through the one or more bypass channels includes moving at least the wellbore fluid and the cuttings material through a larger annular flow area formed by merging two or more of the bypass channels around the first tubular. 
     
     
         19 . The method of  claim 15 , further comprising:
 determining a cutter slot profile of at least one of a first side and a second side of each cutter slot, wherein at least a portion of the cutter slots include a side substantially oriented with a longitudinal axis of the first tubular, and wherein at least a portion of the cutter slots include a side oriented at a lead angle.   
     
     
         20 . The method of  claim 19 , further comprising:
 determining a cutting angle of at least one of the first side and the second side of each cutter slot.