Steven Brian Wood

US Patent:

6461128, Oct 8, 2002

Filed:

Jan 18, 2001

Appl. No.:

09/765170

Inventors:

Steven M. Wood - Tulsa OK 74137

International Classification:

F01C 1107

US Classification:

418 48, 418153, 418178

Abstract:

A progressive cavity helical device which includes a stator with an internal helical cavity. A helical rotor operates within the internal helical cavity of the stator. The rotor has a mandrel of metal, plastic or composite material and an outer covering of elastomeric or resilient material.

US Patent:

20080000083, Jan 3, 2008

Filed:

Apr 8, 2005

Appl. No.:

10/907634

Inventors:

Steven M. Wood - Tulsa OK, US

International Classification:

B23P 15/04
B23P 25/00

US Classification:

2988922, 29458

Abstract:

A process for lining or for relining a fluid helical device stator. In one preferred embodiment, the process includes removing an existing helical surface of a progressive cavity helical device from a housing which is connected to tubulars used downhole in a subterranean well. A mandrel having a helical exterior is inserted into a mold. In one preferred embodiment, a composite stator insert is formed in the mold composed of fibers and resin. Once the composite stator insert has been formed, the mandrel and the mold are removed. The composite stator insert is inserted into and attached to the housing.

US Patent:

57590192, Jun 2, 1998

Filed:

Apr 24, 1996

Appl. No.:

8/637086

Inventors:

Steven M. Wood - Tulsa OK
Brian E. Spencer - Lincoln NE

International Classification:

F04C 2107
F04C 500

US Classification:

418 48

Abstract:

The stator, rotor and/or flex shaft of a progressive cavity pump is made up of composite materials, e. g. , fiberglass and resin, in a variety of combinations with and without bonded resilient elastomers. The composites are formulated to provide resiliency and non-resiliency where needed. The flex shaft between the rotary power source and the rotor is made of composite materials and designed to absorb the orbital and gyrational movement of the rotor.

US Patent:

56113978, Mar 18, 1997

Filed:

May 22, 1995

Appl. No.:

8/447122

Inventors:

Steven M. Wood - Tulsa OK

International Classification:

E21B 4300

US Classification:

166 68

Abstract:

A downhole submersible fluid pump having a progressive cavity motor section driving a rotary pump such as a centrifugal or axial pump. In the motor section the rotor is fixed and by forcing power fluid into the motor chamber around the rotor causes the normally fixed stator to rotate relative to the fixed rotor. This rotary motion is transmitted via the housing to the rotary member of a centrifugal pump drawing fluids from the subterranean formation upwardly as produced fluids.

US Patent:

6183226, Feb 6, 2001

Filed:

Nov 26, 1997

Appl. No.:

8/979290

Inventors:

Steven M. Wood - Tulsa OK
Brian E. Spencer - Lincoln NE

International Classification:

F01C 110

US Classification:

418 48

Abstract:

The stator, rotor and/or flex shaft of a progressive cavity motor is made up of composite materials, e. g. , fiberglass and resin, in a variety of combinations with and without bonded resilient elastomers. The composites are formulated to provide resiliency and non-resiliency where needed. The flex shaft between the rotary power source and the rotor is made of composite materials and designed to absorb the orbital and gyrational movement of the rotor.

US Patent:

53517520, Oct 4, 1994

Filed:

Jun 30, 1992

Appl. No.:

7/906669

Inventors:

Steven M. Wood - Tulsa OK
Blaine Tew - Lincoln NE

Assignee:

Exoko, Incorporated (Wood) - Tulsa OK
Brunswick Corporation (TEW) - Skokie IL

International Classification:

E21B 1720
E21B 4300

US Classification:

166 68

Abstract:

An artificial lifting system is designed for use at a pumping installation which has a pump drive at the surface or head end of a well and a reciprocating pump positioned in the lower end of the well. The artificial lifting system has a tubing string connected between the pump drive and the pump for performing the dual functions of reciprocating the pump plunger in response to activation of the pump drive, and for transporting oil from the underground source to the wellhead. The tubing string advantageously is constructed of a plurality of lightweight, non-metallic tubing segments which are axially connected to form an elongated conduit of several thousand feet in length. In the exemplary embodiment, the tubing segments are made of a glass and carbon reinforced epoxy resin. Preferably, the composite material has a density of approximately 0. 1 pounds per cubic inch and a fiber content of approximately 60% by volume, with the resulting composite material having an elastic modulus in excess of 700,000 psi.

US Patent:

54172810, May 23, 1995

Filed:

Feb 14, 1994

Appl. No.:

8/194835

Inventors:

Steven M. Wood - Tulsa OK
Gordon W. Craig - Lincoln NE

International Classification:

E21B 4300

US Classification:

166 68

Abstract:

A downhole submersible fluid pump having a progressive cavity motor section and a progressive cavity pump section. In each section the rotor is fixed and the pumping action occurs by forcing power fluid into the motor chamber around the rotor which action causes the normally fixed stator to rotate around relative to the fixed rotor. This rotary motion is transmitted via the housing to the pump stator formed internally thereof which rotates relative to another fixed rotor drawing fluids from the subterranean formation upwardly as produced fluids.

US Patent:

60195835, Feb 1, 2000

Filed:

Mar 14, 1997

Appl. No.:

8/818721

Inventors:

Steven M. Wood - Tulsa OK

International Classification:

F03C 208

US Classification:

418 48

Abstract:

A downhole submersible fluid pump having a progressive cavity motor section driving a rotary pump such as a centrifugal or axial pump. In the motor section an inner helical member is fixed relative to an outer rotatable member having helical threads. By forcing power fluid into the motor chamber between the inner and outer member causes the outer member to rotate relative to the fixed inner member. This rotary motion is transmitted to a rotary member of a centrifugal pump, for example, drawing fluids from the subterranean formation upwardly as produced fluids.