Guide tool for guiding downhole tools through wellbore restrictions

Abstract

A guide tool for mounting onto a downhole tool for use in a wellbore penetrating subsurface formations is provided. The guide tool has a bull nose. The bull nose has a first section with an end for sealing against and engaging a lower end of the downhole tool and a second section axially deflectably coupled to the first section.

1 . A guide tool for use in a wellbore penetrating subsurface formations, the guide tool having a bull nose, said bull nose having a first section with an end for sealing against and engaging a lower end of a downhole tool and a second section coupled to the first section such that an axis of the second section is deflectable to an axis of the first section. 
   
   
       2 . The guide tool of  claim 1 , wherein the second section is coupled to the first section by an indexing system that provides indexed deflection. 
   
   
       3 . The guide tool of  claim 2 , wherein the indexing system is mechanically-activated. 
   
   
       4 . The guide tool of  claim 2 , wherein the indexing system is pressure-activated. 
   
   
       5 . The guide tool of  claim 1 , further comprising a pressure sensor disposed in the bull nose. 
   
   
       6 . The guide tool of  claim 1 , further comprising a vibration sensor disposed in the bull nose. 
   
   
       7 . The guide tool of  claim 1 , further comprising a temperature sensor disposed in the bull nose. 
   
   
       8 . The guide tool of  claim 1 , further comprising a fiber splice coupled to the bull nose for making fiber connections. 
   
   
       9 . The guide tool of  claim 1 , wherein the bull nose has a capsule shape when in a neutral position. 
   
   
       10 . An apparatus for use in a wellbore penetrating subsurface formations, the apparatus comprising:
 a downhole tool; and   
   
   
       11 . a guide tool having a bull nose, said bull nose having a first section with an end that seals against and engages a lower end of the downhole tool and a second section coupled to the first section such that an axis of the second section is deflectable relative to an axis of the first section. 
   
   
       12 . The apparatus of  claim 10 , wherein the downhole tool comprises a spoolable rod. 
   
   
       13 . The apparatus of  claim 10 , wherein the downhole tool comprises one or more wellbore tubulars. 
   
   
       14 . The apparatus of  claim 10 , wherein the second section is coupled to the first section by an indexing system that provides indexed deflection. 
   
   
       15 . The apparatus of  claim 13 , wherein the indexing system is mechanically-activatable. 
   
   
       16 . The apparatus of  claim 14 , wherein the indexing system is activatable from a remote location by adjusting axial load on the downhole tool. 
   
   
       17 . The apparatus of  claim 13 , wherein the indexing system is pressure-activated. 
   
   
       18 . The apparatus of  claim 16 , wherein the indexing system is activatable from a remote location by adjusting pressure in the downhole tool. 
   
   
       19 . The apparatus of  claim 10 , further comprising a pressure sensor disposed in the bull nose. 
   
   
       20 . The apparatus of  claim 10 , further comprising a vibration sensor disposed in the bull nose. 
   
   
       21 . The apparatus of  claim 10 , further comprising a temperature sensor disposed in the bull nose.