Reaming system

Abstract

A reaming system including an elongated tubular housing having a first end and a fluid inlet aperture. The elongated tubular housing includes a second end having a fluid outlet aperture. The reaming system includes a first bearing pack disposed circumferentially about the first end of the housing. The first bearing pack is only of sacrificial materials which may be drilled through. The reaming system includes an auger. The reaming system includes a reaming tool functionally coupled to the auger. The reaming tool may be a tool selected from the group consisting of: a float shoe, a reamer shoe, and a guide shoe. The reaming system includes a second bearing pack functionally coupled to a bottom end of the auger. The reaming system includes a connection sub functionally coupled to a bottom end of the auger that transfers rotational motion from the auger to an attached tool.

What is claimed is: 
     
         1 . A reaming system, comprising:
 a) an elongated tubular housing, including:
 a1) a first end having a fluid inlet aperture; 
 a2) a second end, opposite the first end, having a fluid outlet aperture and 
 a3) a coupling structure at the first end of the housing that selectably mates with a bottom end of a casing tube; and 
   b) a first bearing pack disposed circumferentially about the first end of the housing; and   c) an auger disposed within the housing and functionally coupled to the first bearing pack such that the auger may rotate with respect to an attached casing tube and including a rotation transmission structure that transfers rotation motion.   
     
     
         2 . The system of  claim 1 , further comprising a reaming tool functionally coupled to the auger. 
     
     
         3 . The system of  claim 1 , further comprising a casing tube coupled to the housing. 
     
     
         4 . The system of  claim 1 , further comprising a hydraulic fluid disposed within the housing and flowing therethrough. 
     
     
         5 . The system of  claim 1 , further comprising a pump in fluid communication with the casing tube. 
     
     
         6 . The system of  claim 2 , wherein the reaming tool is a tool selected from the group consisting of: a float shoe, a reamer shoe, and a guide shoe. 
     
     
         7 . The system of  claim 1 , further comprising a second bearing pack functionally coupled to a bottom end of the auger. 
     
     
         8 . The system of  claim 1 , further comprising a connection sub functionally coupled to a bottom end of the auger that transfers rotational motion from the auger to an attached tool and including a lock assembly that locks an attached tool to the connection sub. 
     
     
         9 . The system of  claim 1 , wherein the auger rotates within the housing. 
     
     
         10 . The system of  claim 1 , wherein the first bearing pack is only of sacrificial materials which may be drilled through. 
     
     
         11 . The system of  claim 1 , wherein the auger includes a spiral blade wrapped about a central axle. 
     
     
         12 . The system of  claim 7 , wherein the second bearing pack is not only of sacrificial materials and includes an internal profile sized substantially similar to an inner profile of a casing tube such that a drill may pass through without having to drill therethrough. 
     
     
         13 . A mandrel assembly, comprising:
 a) an elongated tubular housing, including:
 a1) a first end having a fluid inlet aperture; 
 a2) a second end, opposite the first end, having a fluid outlet aperture and 
 a3) a coupling structure at the first end of the housing that selectably mates with a bottom end of a casing tube; and 
   b) a first bearing pack disposed circumferentially about the first end of the housing; and   c) an auger disposed within the housing and functionally coupled to the first bearing pack such that the auger may rotate with respect to an attached casing tube and including a rotation transmission structure that transfers rotation motion.   
     
     
         14 . The assembly of  claim 13 , further comprising a second bearing pack functionally coupled to a bottom end of the auger. 
     
     
         15 . The assembly of  claim 14 , further comprising a connection sub functionally coupled to a bottom end of the auger that transfers rotational motion from the auger to an attached tool and including a lock assembly that locks an attached tool to the connection sub. 
     
     
         16 . The assembly of  claim 15 , wherein the auger rotates within the housing. 
     
     
         17 . The assembly of  claim 16 , wherein the first bearing pack is only of sacrificial materials which may be drilled through. 
     
     
         18 . The assembly of  claim 17 , wherein the auger includes a spiral blade wrapped about a central axle. 
     
     
         19 . The assembly of  claim 18 , wherein the second bearing pack is not only of sacrificial materials and includes an internal profile sized substantially similar to an inner profile of a casing tube such that a drill may pass through without having to drill therethrough. 
     
     
         20 . A reaming system, comprising:
 a) an elongated tubular housing, including:
 a1) a first end having a fluid inlet aperture; 
 a2) a second end, opposite the first end, having a fluid outlet aperture and 
 a3) a coupling structure at the first end of the housing that selectably mates with a bottom end of a casing tube; and 
   b) a first bearing pack disposed circumferentially about the first end of the housing; wherein the first bearing pack is only of sacrificial materials which may be drilled through;   c) an auger disposed within the housing and functionally coupled to the first bearing pack such that the auger may rotate with respect to an attached casing tube and including a rotation transmission structure that transfers rotation motion; wherein the auger rotates within the housing; wherein the auger includes a spiral blade wrapped about a central axle;   d) a reaming tool functionally coupled to the auger; wherein the reaming tool is a tool selected from the group consisting of: a float shoe, a reamer shoe, and a guide shoe;   e) a casing tube coupled to the housing;   f) a hydraulic fluid disposed within the housing and slowing therethrough;   g) a pump in fluid communication with the casing tube;   h) a second bearing pack functionally coupled to a bottom end of the auger; wherein the second bearing pack is not only of sacrificial materials and includes an internal profile sized substantially similar to an inner profile of a casing tube such that a drill may pass through without having to drill therethrough; and   i) a connection sub functionally coupled to a bottom end of the auger that transfers rotational motion from the auger to an attached tool and including a lock assembly that locks an attached tool to the connection sub.