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:
Jun. 28, 1977
Filed:
Jul. 23, 1976
Applicant:
Inventor:
Lawrence Sanford, Houston, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ; E21B / ;
U.S. Cl.
CPC ...
166264 ; 166184 ; 166315 ; 166307 ; 166317 ; 166318 ;
Abstract
A single trip method of testing and treating a down hole formation in which conventional drill stem testing can be carried out followed by acidizing or other treatment of the formation without the need to remove the drill stem test string, the method employing a well tool in the operating tool string which allows reverse circulation to clean out the tool string following the initial drill stem test, allows the introduction of acidizing fluid into the formation and permits a second reverse circulation following acidizing and subsequent testing, the well tool being operative without the necessity for rotation of the tool string.