Reaming tool

Abstract

The present invention provides a reaming tool, comprising a channel body having a tubular wall and comprising a dynamic sleeve and a fluid channel across the center of the channel body. There are two or more tubular, drive chambers stacked one after another, and surrounded by a torsional housing having separate segments allowing fluid flow and jetting impact on each segment, each drive chamber having one or more inlet(s) upstream for fluid entry and one or more discharge holes downstream for fluid discharge. A stabilized housing is coupled around the torsional housing and one end of the stabilized housing rotatably coupled with the dynamic sleeve of the channel body, and another end of the stabilized housing is a reamer head having one or more fluid outlet.

What is claimed is: 
     
         1 . A reaming tool, comprising:
 a channel body having a tubular wall and comprising a dynamic sleeve and a fluid channel across the center of the channel body;   two or more tubular, drive chambers stacked one after another, with a first drive chamber having an open end in fluid connection with the fluid channel and another closed end in stacking connection with one or more subsequent drive chamber having two closed ends, wherein outer walls of the drive chambers are surrounded in a fixedly engagement by a torsional housing having separate segments allowing fluid flow in each segment, each drive chamber having one or more inlet upstream for fluid entry and one or more discharge hole downstream for fluid discharge; and   a stabilized housing having an inner wall fixedly coupled around the torsional housing and one end of the stabilized housing rotatably coupled with the dynamic sleeve of the channel body, and another end of the stabilized housing is a reamer head having one or more fluid outlet,   characterized in that the discharge hole of the drive chamber is in fluid connection with the inlet of the subsequent drive chamber by the segment of the torsional housing to form a fluid conduit system in such a way that a fluid passed from the fluid channel enters the first drive chamber and flows through the fluid conduit system connecting each subsequent drive chamber to impart rotational force on the torsional housing and the stabilized housing, when the fluid is forced therethrough before exiting through the fluid outlet.   
     
     
         2 . The reaming tool according to  claim 1 , wherein the communication between the drive chamber and the torsional housing further comprising a drive disc having a discharge conduit that mates with the discharge hole for fluid connection between the drive chamber and a corresponding segment of the torsional housing. 
     
     
         3 . The reaming tool according to  claim 2 , wherein the discharge conduit is a curved conduit for creating a rotational fluid jet when the fluid exists the drive chamber. 
     
     
         4 . The reaming tool according to  claim 2 , wherein the drive disc is in place for each drive chamber and is stacked according to the number of holes in the curved surface of the drive chamber. 
     
     
         5 . The reaming tool according to  claim 2 , wherein the drive disc and the drive chamber act as to jet fluid against the bladed segments/impellers within the internal diameter of the torsional housing. 
     
     
         6 . The reaming tool according to  claim 1 , wherein the rotational force increases in positive correlation with the number of drive chamber. 
     
     
         7 . The reaming tool according to  claim 1 , wherein the dynamic sleeve further comprising a bearing pack positioned radially to form a rotational connection between the dynamic sleeve and the stabilized housing. 
     
     
         8 . The reaming tool according to  claim 1 , wherein the torsional housing is segmented circumferentially and lengthwise. 
     
     
         9 . The reaming tool according to  claim 1 , wherein an outer wall of the stabilized housing further comprising one or more reaming extension for reaming a surface. 
     
     
         10 . The reaming tool according to  claim 1 , wherein the reamer head is curved or torpedo-shaped. 
     
     
         11 . The reaming tool according to  claim 1 , wherein the reamer head is attached to the stabilized housing ( 400 ) in a rotatable connection. 
     
     
         12 . The reaming tool according to  claim 1 , wherein the reamer head is attached to the stabilized housing in a non-rotatable connection. 
     
     
         13 . The reaming tool according to  claim 11 , wherein the attachment between the reamer head and the stabilized housing is a removable attachment. 
     
     
         14 . The reaming tool according to  claim 12 , wherein the attachment between the reamer head and the stabilized housing is a removable attachment. 
     
     
         15 . The reaming tool according to  claim 1 , wherein the channel body further comprising:
 a static sleeve functionally coupled to the dynamic sleeve;   a static housing functionally coupled to the static sleeve;   a second sleeve functionally coupled to the static sleeve; and   a static mandrel functionally coupled to an interior of the static sleeve.   
     
     
         16 . The reaming tool according to  claim 1 , wherein the fluid conduit system comprising multiple inlets, discharge holes and discharge conduits in fluid connection with multiple segments of the torsional housing in connection with two or more drive chambers. 
     
     
         17 . The reaming tool according to  claim 1 , wherein a last drive chamber is functionally coupled to a radial bearing and is positioned between the last drive chamber and the fluid outlet.