Randall Louis Ray

US Patent:

60655372, May 23, 2000

Filed:

Feb 13, 1998

Appl. No.:

9/023595

Inventors:

Thomas E. Evans - Midland TX
H. Milton Hoff - Tomball TX
Randall Ray - Spring TX

Assignee:

Flow Control Equipment, Inc. - Tomball TX

International Classification:

E21B 1710

US Classification:

1662414

Abstract:

A rod guide fixedly molded around the shank of a sucker rod string with the rod guide including a radially inner non-erodible zone and a radially outer erodible zone. The non-erodible zone includes a radially inner substantially sleeve-shaped portion having an inner cylindrical surface for gripping engagement with the rod. A plurality of flow through channels are spaced outward of the substantially sleeve-shaped portion. Each flow through channel extends axially along the rod guide and has a maximum circumferential width greater than any gap in the radially outer surface of the erodible zone circumferentially aligned with and radially outward of the respective flow through channel. The radially outer surface of the erodible zone may have a cylindrical outer configuration, such that a radially outward substantially sleeve-shaped portion is provided for engagement with the tubing. The upper and lower surfaces of the rod guide may each be inclined such that the radially outer surface of the rod guide extends longitudinally in excess of the inner cylindrical surface of the sleeve-shaped portion and in engagement with the rod.

US Patent:

63126370, Nov 6, 2001

Filed:

Apr 11, 2000

Appl. No.:

9/547413

Inventors:

Thomas E. Evans - Midland TX
H. Milton Hoff - Tomball TX
Randall Ray - Spring TX

Assignee:

Flow Control Equipment, Inc. - Tomball TX

International Classification:

B29C 4514

US Classification:

264275

Abstract:

A rod guide fixedly molded around the shank of a sucker rod string with the rod guide including a radially inner non-erodible zone and a radially outer erodible zone. The non-erodible zone includes a radially inner substantially sleeve-shaped portion having an inner cylindrical surface for gripping engagement with the rod. A plurality of flow through channels are spaced outward of the substantially sleeve-shaped portion. Each flow through channel extends axially along the rod guide and has a maximum circumferential width greater than any gap in the radially outer surface of the erodible zone circumferentially aligned with and radially outward of the respective flow through channel. The radially outer surface of the erodible zone may have a cylindrical outer configuration, such that a radially outward substantially sleeve-shaped portion is provided for engagement with the tubing. The upper and lower surfaces of the rod guide may each be inclined such that the radially outer surface of the rod guide extends longitudinally in excess of the inner cylindrical surface of the sleeve-shaped portion and in engagement with the rod.