The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 1988
Filed:
Nov. 24, 1986
Applicant:
Inventor:
Lowell M Reed, Moore, OK (US);
Assignee:
Parco Mast and Substructures, Del City, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
414 22 ; 175 52 ; 211 704 ;
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.degree. 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.degree. 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.