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.

Date of Patent:
Feb. 19, 1980

Filed:

Sep. 27, 1978
Applicant:
Inventor:

Amareswar Amancharla, League City, TX (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166133 ; 166135 ; 166317 ;
Abstract

A well tool assembly is provided which is adapted to be set within a well bore. The assembly comprises a main body having a main passage. Means on the main body are provided for securing the main body within the well bore. An expendable plug is provided and housed within the passage to prevent flow of fluid therethrough. The plug assembly comprises a top sub, a longitudinally extending mandrel and piston means. First disengaging means are provided for selectively securing the top sub to the piston means or the mandrel. Second disengaging means are provided for selectively securing the top sub to the other of the piston means and the mandrel. Seal means are located on the plug assembly for prevention of fluid transmission thereacross. First and second no-go elements on at least one of the main body and the expendable plug are operational with third disengaging means which, in turn, are initially housed within the main body and between the no-go means, and initially secured to at least one of the piston means and the mandrel, the no-go means resisting upper and lower longitudinal movement of the third disengaging means.


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Amancharla, Amareswar. (1980). Expendable plug and packer assembly (U.S. Patent No. 4188999). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4188999

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