Drilling derrick with external pipe storage

• US 4,744,710 A
• Filed: 11/24/1986
• Issued: 05/17/1988
• Est. Priority Date: 11/24/1986
• Status: Expired due to Term

• Current Assignee: Parco MAST and Substructures Incorporated
• Original Assignee: Parco MAST and Substructures Incorporated
• Inventors: Reed, Lowell M.
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US06/934,419
• Time in Patent Office: 540 Days
• Field of Search: 414/22, 414/745, 175/52, 175/85, 211/70.4
• US Class Current: 414/22.63
• CPC Class Codes: E21B 15/00 Supports for the drilling machine, e.g. derricks or masts
• CPC Class Codes: E21B 19/14 Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole E21B19/20, E21B19/22 take precedence

Abstract

A drilling rig which may have a beta mast is used for drilling holes in the earth. The mast has four quadrants. On one side there is located the drawworks. On a side 90° therefrom is the side having the V door through which drilling pipe can be raised and lowered by the traveling block. In the quadrant 180° from the V-door is a pipe racking board. The racking board is outside the normal work area within the derrick. Thus, one can obtain entry of the drill pipe through the V door without the pipe stored in the racking board interferring therewith. With this design there is no limitation to the amount of pipe that can be stored.

Claims

1. A drilling rig for drilling a hole in the earth which comprise:

a mast having a center which defines the location at which the hole will be drilled and having a first, a second, a third and a fourth quadrant spaced radially about said center, with said second quadrant being spaced 90°

degrees from said first quadrant and said fourth quadrant being 180°

from said second quadrant, said mast having an interior working area;

a drawworks for said mast at one side of said center and in said first quadrant;

a V-door formed at the lower end of said mast and located in said second quadrant;

a racking means supported by said mast and is only in said fourth quadrant outside of the working area and outside said mast.

2. A drilling rig as defined in claim 1 including a crane supported at the top of said mast for lifting pipe from the ground into said racking means.

3. A drilling rig for drilling a hole in the earth which comprises:

a drilling mast having a first leg and a second leg parallel to said first leg and spaced therefrom forming a work space therebetween, each leg being of uniform cross sectional size throughout its length, there being a first, second, third and fourth quadrant about said mast;

a drawworks supported at the lower end of said mast;

a crown block at the top end of said mast and supporting a traveling block inside said work space by a live cable connected to said drawworks;

a V-door formed at the lower end of said mast in the second quadrant;

a racking board supported in said fourth quadrant and outside of said legs, said racking board including a plurality of parallel fingers forming pipe receiving slots therebetween, said racking board further having an outside opening therein on the outside side so that the pipemay enter through from the outside of said drilling mast.

4. A drilling rig as defined in claim 3 including a crane supported at the top of said mast for lifting pipe from the ground into said racking means through said outside opening.

5. A drilling rig as defined in claim 4 in which said racking board has an inside opening whereby stored pipe may be moved by said traveling block through said inside opening to the work space.