×

Modular well drilling apparatus and methods

  • US 4,899,832 A
  • Filed: 12/10/1987
  • Issued: 02/13/1990
  • Est. Priority Date: 08/19/1985
  • Status: Expired due to Fees
First Claim
Patent Images

1. A modular unitized well drilling apparatus having a plurality of separately transportable and connectable units adapted for transport from one location to a second well sit location and comprising:

  • a separately transportable drilling unit including an elongated mast adapted to be pivoted from a horizontal transport position to a vertical drilling position, said mast carrying a top drive unit for imparting rotary motion to a drill pipe;

    separately transportable first and second raising units adapted to be positioned on the respective opposite sides of said drilling unit and to be removably connected thereto, each of said raising units including a tower that is adapted to be pivoted from a horizontal to a vertical position;

    means for removably connecting the tower of each raising unit to said drilling unit at said well site location;

    base means on each of said raising units adapted to be lowered into engagement with the ground to provide a support; and

    means on said base means for simultaneously pivoting said towers of said raising units and said separate drilling unit after connection to said raising units to the vertical position from the horizontal position to permit rapid assembly of said well drilling apparatus at a well site.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×