Majid S Delpassand, 6331 Arcade, Irvine, CA 92603

7396220, Jul 8, 2008

Mar 21, 2005

11/085910

Majid S. Delpassand - Houston TX, US
Dennis Sell Norton - Spring TX, US

Dyna-Drill Technologies, Inc. - Houston TX

F01C 1/10
F01C 5/00

418 48, 418220, 418153

A progressing cavity stator and a method for fabricating such a stator are disclosed. Exemplary embodiments of the progressing cavity stator include a plurality of rigid longitudinal stator sections concatenated end-to-end in a stator tube. The stator sections are rotationally aligned so that each of the internal lobes extends in a substantially continuous helix from one end of the stator to the other. The stator further includes an elastomer liner deployed on an inner surface of the concatenated stator sections. Exemplary embodiments of this invention include a comparatively rigid stator having high torque output and are relatively simple and inexpensive to manufacture as compared to prior art rigid stators.

7517202, Apr 14, 2009

Jan 12, 2005

11/034075

Majid S. Delpassand - Houston TX, US

Smith International, Inc. - Houston TX

F01C 1/10
F01C 5/00

418 48, 418158

A progressing cavity stator and a method for fabricating such a stator are disclosed. The progressing cavity stator includes first and second elastomer layers fabricated from corresponding first and second elastomer materials. The first and second elastomer materials are selected to have at least one distinct material property. Exemplary embodiments of this invention may reduce tradeoffs associated with elastomer material selection and may further address the heat build up and subsequent elastomer breakdown in the lobes of prior art stators.

2005008, Apr 28, 2005

Oct 27, 2003

10/694557

Majid Delpassand - Houston TX, US
James Gallagher - Little Compton RI, US

Dyna-Drill Technologies, Inc. - Houston TX

F01C001/10
F04C018/00

418048000

A progressing cavity stator is provided. The progressing cavity stator includes a fiber reinforced composite component providing an internal helical cavity having at least one helical groove and an elastomeric liner disposed on an internal surface of the fiber reinforced composite component. In various exemplary embodiments, the fiber reinforced composite component includes a plurality of fibers disposed in a matrix material, the plurality of fibers being disposed such that distinct portions thereof follow correspondingly distinct directions. Exemplary embodiments of this invention may advantageously exhibit a prolonged service life in downhole applications as compared to conventional progressing cavity stators. A replaceable progressing cavity insert for a stator is also provided. Methods for fabricating progressing cavity stators and progressing cavity inserts are also provided.

2006018, Aug 17, 2006

Feb 11, 2005

11/056674

Majid Delpassand - Houston TX, US
Dennis Norton - Spring TX, US

Dyna-Drill Technologies, Inc. - Houston TX

F01C 5/00
F16N 13/20
F04C 5/00
F04C 2/00
F03C 2/00
F04C 18/00

418045000

A progressing cavity stator and a method for fabricating such a stator are disclosed. Exemplary embodiments of the progressing cavity stator include a plurality of rigid longitudinal stator sections concatenated end-to-end in a stator tube. The stator sections are rotationally aligned so that each of the internal lobes extends in a substantially continuous helix from one end of the stator to the other. The stator further includes an elastomer liner deployed on an inner surface of the concatenated stator sections. Exemplary embodiments of this invention include a comparatively rigid stator having high torque output and are relatively simple and inexpensive to manufacture as compared to prior art rigid stators.

2014030, Oct 16, 2014

Apr 11, 2013

13/861248

- Houston TX, US
Majid S. Delpassand - Houston TX, US
Leonard J. Vogel - Tomball TX, US
Allen T. Le - Missouri City TX, US

F04C 2/107

418 48, 29428

Progressing cavity devices and systems are provided. In one embodiment, a system includes a metal stator of a progressing cavity device. The metal stator includes metal plates with apertures that are rotationally offset to form a winding rotor cavity. At least one of the apertures that form the winding rotor cavity has an elongated profile with enlarged ends having widths greater than that across the middle of the at least one aperture. Additional systems, devices, and methods are also disclosed.