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. 31, 2000
Filed:
Nov. 18, 1998
Anthony F Veneruso, Missouri City, TX (US);
Gerald W Robertson, Missouri City, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A system for use in a subterranean well includes a production tubing and a valve. The production tubing has a port to receive well fluid from a formation. The valve is mounted to the production tubing and includes a sealed housing, a motor, a valve cover, an actuator drive and a sensor. The motor is located inside the housing, and the actuator drive is actuated by the motor to move the valve cover over the port to selectively control the communication of the well fluid between the formation and the passageway of the tubing. The sealed housing may permit the well fluid to accumulate inside the housing over time. The sensor is located inside the housing and provides an indication of the amount of well fluid that has accumulated inside the housing. This information may be useful for such exemplary purposes as predicting when the valve will fail and for evaluating the condition of the valve.