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:
Oct. 12, 1982
Filed:
Nov. 28, 1980
Applicant:
Inventor:
Richard H Widmyer, Houston, TX (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166250 ; 166278 ; 166303 ; 175 67 ;
Abstract
A method for producing a well in an unconsolidated formation by forming a sand pack in the well by applying and maintaining a high positive pressure against the cavity walls to prevent cave-in and sloughing of the formation cavity walls until the sand pack is formed comprises (1) controlling the ingress and egress of fluids and removed formation material from inner and outer annuli with a high pressure wash pipe in the well with control valves in each.