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:
Nov. 25, 1986
Filed:
Sep. 12, 1984
Burchus Q Barrington, Duncan, OK (US);
Halliburton Company, Duncan, OK (US);
Abstract
A well testing tool includes a housing adapted to be connected to a well test string and having a substantially open bore therethrough. A valve assembly is disposed in the housing and includes a spherical valve member having a substantially open valve bore therethrough and includes upper and lower annular seats engaging the spherical valve member. The valve member is rotatable within the seats between closed and open positions. An actuating assembly is engaged with the valve member for rotating the valve member between its open positions upon relative longitudinal movement between the actuating assembly and the spherical valve member. An upper load transfer mandrel is disposed between the upper seat and the housing for transferring any upward forces caused by upwardly directed pressure differentials across the spherical valve member to the housing by compressional loading of the upper load transfer mandrel. A lower load transfer mandrel is disposed between the lower annular seat and the housing for transferring any downward forces caused by a downward directed pressure differential across the spherical valve member to the housing by compressional loading of the lower load transfer mandrel.