Resources Contact Us Home
Variable orifice gas lift valve assembly for high flow rates with detachable power source and method of using same

Image Number 5 for United States Patent #5971004.

The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve and actuating assembly for sealable insertion in a mandrel. The valve has a variable orifice which alternately permits, prohibits, or throttles fluid flow into the valve, and a detachable and/or remote actuator are disclosed. The valve may be actuated using momentary bursts of hydraulic pressure to the actuating assembly. Variable orifice opening settings are achieved by providing successive bursts of hydraulic pressure to the actuating assembly, which cause a cylindrical cam within the actuating assembly to be indexed between multiple support positions. The orifice valve and the actuator while operatively connected, may be separately installed in or retrieved from the mandrel by either wireline or coiled tubing intervention methods.

  Recently Added Patents
Precoding codebooks for MIMO communication systems
Method for producing cathode active material for a lithium secondary battery
Creating and manufacturing documents that initially exceed equipment finishing capacity
Pharmaceutical composition for treating CAPRIN-1 expressing cancer
Method and apparatus for radio antenna frequency tuning
Method and apparatus for optimizing transmission diversity
Visual universal decryption apparatus and methods
  Randomly Featured Patents
Methods of administering/dosing anti-RSV antibodies for prophylaxis and treatment
Pyrazoles as human non-pancreatic secretory phospholipase A.sub.2 inhibitors
E-paper display control based on conformation sequence status
Quick release snowmobile seat
Hexakis(monohydrocarbylamino)disilanes and method for the preparation thereof
Device for treating fodder and reaping machine which uses such device for treating fodder
Hand held game machine
Method for controlling exhaust gas flow and temperature through regenerable exhaust gas treatment devices
Channel control techniques
Personal emergency notification device with usage monitoring