Method for increasing bit load

Abstract

A circulation system in which a drilling fluid flows from the surface, through a pipe, through a motor and a drill bit, and returns to the surface through the annular area between the outside diameter of the pipe and the internal diameter of the hole being drilled, to urge the drilling system forward by providing a seal which engages the internal diameter of the hole being drilled, providing a booster pump to pump the drilling fluids between the seal and the outer diameter of the drilling system such that the pressure downstream of the booster pump is higher than the pressure upstream of the booster pump by a differential pressure giving a force generally proportionate to the area within the diameter of the sealing engagement with the internal diameter of the bore times the differential pressure to urge the drilling system forward.

1 . In a circulation system in a hole in which a fluid flows from a starting location, through a pipe within said hole, through a motor, and returns to said starting location through the annular area between the outside diameter of said pipe and the internal diameter of said hole, the method of urging said motor further from said starting location, comprising
 providing a seal which sealingly engages said internal diameter of said hole,   providing a booster pump to pump said fluids between said seal and the outer diameter of said pipe such that the pressure downstream of said booster pump is higher than the pressure upstream of said booster pump by a differential pressure,   such that a force generally proportionate to the area within the diameter of said sealing engagement with said internal diameter of said hole times said differential pressure urges said motor forward.   
   
   
       2 . The invention of  claim 1 , wherein fluid leaving the distal end of said pipe removes material from the end of said hole and increases the length of said hole from said starting location. 
   
   
       3 . The invention of  claim 1 , wherein said motor rotates a drilling bit which removes material from the end of said hole and increases the length of said hole from said starting location. 
   
   
       4 . The invention of  claim 3 , wherein urging said motor further from said starting location increases load on said drilling bit at the distal end of said hole from said starting location. 
   
   
       5 . The invention of  claim 1 , wherein said motor is urged forward in a generally horizontal direction. 
   
   
       6 . The invention of  claim 1 , wherein said seal is a pressure energized cup type seal. 
   
   
       7 . The invention of  claim 5 , wherein said pressure energized cup type seal has a connection to said motor which keeps said energized cup type seal from being turned inside out during retrieval from the hole. 
   
   
       8 . The invention of  claim 1 , wherein booster pump is a turbine style pump. 
   
   
       9 . The invention of  claim 8 , wherein the rotating section of said turbine type booster pump is rotated by said motor. 
   
   
       10 . In a circulation system in which a drilling fluid flows from the surface, through a pipe, through a drilling system comprising a motor and a drill bit, and returns to said surface through the annular area between the outside diameter of said pipe and the internal diameter of the hole being drilled, the method of urging said drilling system forward, comprising
 providing a seal which sealingly engages said internal diameter of said hole being drilled at a location between said drilling bit and said surface,   providing a booster pump to pump said drilling fluids between said seal and the outer diameter of said drilling system such that the pressure downstream of said booster pump is higher than the pressure upstream of said booster pump by a differential pressure,   such that a force generally proportionate to the area within the diameter of said sealing engagement with said internal diameter of said bore times said differential pressure urges said drilling system forward.   
   
   
       11 . The invention of  claim 10 , wherein urging said drilling system forward increases the load on the area to be drilled. 
   
   
       12 . The invention of  claim 11 , wherein the area to be drilled is formations within the earth. 
   
   
       13 . The invention of  claim 10 , wherein said drilling system is urged forward in a generally horizontal direction. 
   
   
       14 . The invention of  claim 10 , wherein said seal is a pressure energized cup type seal. 
   
   
       15 . The invention of  claim 14 , wherein said pressure energized cup type seal has a connection to said drilling system on the end distal from said bit which keeps said energized cup type seal from being turned inside out during retrieval from the hole. 
   
   
       16 . The invention of  claim 10 , wherein booster pump is a turbine style pump. 
   
   
       17 . The invention of  claim 16 , wherein the rotating section of said turbine type booster pump is rotated by said motor. 
   
   
       18 . In a circulation system in which a drilling fluid flows from the surface, through a pipe, through a drilling system comprising a motor and a drill bit, and returns to said surface through the annular area between the outside diameter of said pipe and the internal diameter of said hole being drilled, the method of increasing the load on said drilling bit on the formations to be drilled to improve the drilling operations, comprising
 providing a seal which sealingly engages said internal diameter of said hole being drilled at a location between said drilling bit and said surface,   providing a booster pump to pump said drilling fluids between said seal and the outer diameter of said drilling system such that the pressure downstream of said booster pump is higher than the pressure upstream of said booster pump by a differential pressure,   such that a force generally proportionate to the area within the diameter of said sealing engagement with said internal diameter of said bore times said differential pressure urges said drilling system forward.   
   
   
       19 . The invention of  claim 18 , wherein said load is increased on said drill bit by urging said drilling system forward.