Amy D Stephens

US Patent:

8261769, Sep 11, 2012

Filed:

Oct 4, 2010

Appl. No.:

12/897570

Inventors:

Amy C. Stephens - Hudson Oaks TX, US

Assignee:

Delaware Capital Formation, Inc. - Wilmington DE

International Classification:

F16K 31/18

US Classification:

137445, 137269, 137270, 1373158, 137413, 137426

Abstract:

A controller and method of using same are disclosed. Preferably, the controller includes a pilot cartridge housing supporting an invertible pilot cartridge assembly (“cartridge”). The cartridge preferably includes a cartridge body supporting a number of pneumatic seals adjacent the housing, wherein at least two of the seals are diaphragms. The cartridge preferably provides a first pilot activation feature and an opposing second pilot activation feature. The operating mode of the cartridge is determined by a selected orientation of the first pilot activation feature relative to the housing; and preferably the method of operating the controller includes the steps of: selecting an orientation of the first pilot activation feature relative to the housing; setting a span control mechanism to a neutral position relative to the housing; adjusting a float communicating with the cartridge to a neutral position; and adjusting said span control mechanism to determine a response type of said cartridge.

US Patent:

8347955, Jan 8, 2013

Filed:

Feb 5, 2010

Appl. No.:

12/701369

Inventors:

Michael Sewell - Keene TX, US
Amy C. Stephens - Hudson Oaks TX, US

Assignee:

4S Oilfield Technologies, LLC - Fort Worth TX

International Classification:

E21B 43/00

US Classification:

166105, 166 68, 166372

Abstract:

Method and apparatus for a plunger lift mechanism with a main channel disposed between a first and second valve. The first valve is closed by engaging a sealing member to a first seat at a proximal end of the main channel and the second valve consequently closes to with a sealing member engaging a second seat at a distal end of the main channel. An amount of pressure accumulates on a first side of the plunger lift to overcome a pressure on a second side of the plunger lift to force the plunger lift to traverse a well bore and evacuate any fluids present above the plunger lift.

US Patent:

8448710, May 28, 2013

Filed:

Aug 4, 2010

Appl. No.:

12/850465

Inventors:

Amy C. Stephens - Hudson Oaks TX, US

International Classification:

E21B 43/00

US Classification:

166372, 166105

Abstract:

An apparatus for a plunger lift mechanism with a main channel disposed between a first and second valve. The first valve is closed by engaging a sealing member to a first seat at a proximal end of the main channel and the second valve consequently closes to with a sealing member engaging a second seat at a distal end of the main channel. An amount of pressure accumulates on a first side of the plunger lift to overcome a pressure on a second side of the plunger lift to force the plunger lift to traverse a well bore and evacuate any fluids present above the plunger lift.