Vibratory Drilling System and Tool For Use In Downhole Drilling Operations and A Method For Manufacturing Same

Abstract

A vibratory drilling tool for use coupling to a drill string in a borehole in downhole drilling operations has a tool body having a fluid flow path extending along a longitudinal axis there through, a first pin end and an opposite box end. A cam body portion extending longitudinally along the length of said tool has a generally smooth cam arc section on an opening side with at least one elongated flat surface extending longitudinally along a closing side of the cam body portion from a pin end tapering shoulder to a box end tapering shoulder. The cam body portion when coupled to said drill string lifts a generally horizontal drill pipe section of the drill string vertically in the borehole as the drill pipe section is rotated in the borehole.

1 . A vibratory drilling tool for use in a generally deviated or horizontal section of a borehole in downhole horizontal drilling operations comprising:
 a tool body having a fluid flow path extending along a longitudinal axis therethrough said longitudinal axis of said tool body being generally parallel to a longitudinal axis of said generally deviated or horizontal section of said borehole, a first pin end and an opposite box end for coupling said tool body to a drill string;   a cam body portion extending longitudinally along a length of said tool having a generally smooth cam arc section on an opening side with at least one elongated flat surface extending longitudinally along a closing side of said cam body portion from a pin end tapering shoulder to a box end tapering shoulder, said cam body portion vertically lifting a generally horizontal drill pipe section of said drill string in said generally deviated or horizontal section of said borehole when said tool body is coupled to said drill string and said drill pipe section is rotated in said borehole.   
     
     
         2 . The vibratory tool of  claim 1  further comprising a threaded portion along an edge of an intersection of said cam arc section and said at least one elongated flat surface of said cam body portion. 
     
     
         3 . The vibratory tool of  claim 1 , further comprising a plurality of flat surfaces extending longitudinally along said closing side of said cam body portion from said pin end tapering shoulder to said box end tapering shoulder. 
     
     
         4 . The vibratory tool of  claim 2  wherein a plurality of scrapping edges extend longitudinally along intersections of said flat surfaces. 
     
     
         5 . The vibratory tool of  claim 1 , further comprising a plurality of wiping fingers extending outwardly from at least one of said elongated flat surface. 
     
     
         6 . A vibratory drilling system comprising:
 a drill string for use in a generally deviated or horizontal section of a borehole in downhole horizontal drilling operations having a plurality of drill pipe sections, a steering tool, and a drilling bit wherein at least one of said plurality of drill pipe sections further comprises: a drill pipe body portion having a fluid flow path extending along a longitudinal axis therethrough said longitudinal axis of said drill pipe body portion being generally parallel to a longitudinal axis of said generally deviated or horizontal section of said borehole, a cam body portion extending longitudinally along a length of said drill pipe body having a generally smooth cam arc section on an opening side with at least one elongated flat surface extending longitudinally along a closing side of said cam body portion from a pin end tapering shoulder to a box end tapering shoulder, said cam body portion vertically lifting a generally horizontal drill pipe section of said drill string vertically in said in said generally deviate or horizontal section of said borehole when said drill pipe section is rotated in said borehole.   
     
     
         7 . A method of retrofitting a standard drill pipe section having a wear joint to a vibratory drill pipe section comprising the steps of:
 obtaining said standard drill pipe section having a wear joint;   cleaning a surface of said wear joint for attachment of profile members;   attaching a cam-shaped profile member to said wear joint surface;   attaching a flat profile member to said wear joint surface adjacent said cam-shaped profile member; and; and   providing generally smooth tapering shoulders at pin and box ends of said cam-shaped profile member and said flat profile member to said wear joint surface.