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:
Apr. 11, 1978
Filed:
Nov. 12, 1976
Applicant:
Inventor:
James F Arnold, Houston, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
175393 ; 175339 ;
Abstract
A jetting apparatus is provided to be a part of a drill string used in drilling a well. The apparatus functions to reduce the hydrostatic pressure of the drilling mud on the bottom of the hole to approach or attain optimal drilling conditions. The apparatus has a body with a plurality of upwardly facing shoulders. A jet nozzle is placed in each of the shoulders to direct or discharge mud vertically upwardly along and parallel to the lower part of the drill string to provide a jet lifting action which reduces the hydrostatic mud pressure on the bottom of the bore hole.