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:
Jul. 31, 1990
Filed:
Nov. 27, 1989
Thomas G Whiteley, Houston, TX (US);
Travis W Cavender, Angelton, TX (US);
Halliburton Company, Duncan, OK (US);
Abstract
Gravel packing systems are disclosed which permit sand fill to be reverse circulated out of a well without tripping the gravel packing system itself out of the well. The gravel packing system can be utilized with a sump packer. An outer seal assembly is constructed to be received in a bore of the sump packer. The seal assembly has a seal assembly bore therethrough which receives a lower end of a wash pipe. A wash pipe extension is partially received in the lower end of the seal assembly bore and extends downward below the seal assembly. The wash pipe extension is communicated with the wash pipe. A releasable retaining structure is operably associated with the wash pipe and the wash pipe extension and initially retains the wash pipe in the seal assembly bore. Subsequently, the wash pipe extension is released upon upward movement of the wash pipe. Methods of gravel packing are also disclosed.