Roddy W Simpson

20120031208, Feb 9, 2012

Aug 9, 2010

12/853211

RODDY W. SIMPSON - Lufkin TX, US
DAVID W. DOYLE - Groveton TX, US
MARTIN E. MORALES - Lufkin TX, US
BRADY D. ROMANO - Lufkin TX, US

F04B 47/02
F16H 21/32

74 41

A method and pumping unit for use with an inclined wellhead. Proper address of the wellhead is accomplished through incorporation of an elbow-shaped walking beam. The forward section of the walking beam is fabricated such that its longitudinal axis is angled to address the inclination of the wellhead. The rearward section of the walking beam and the four-bar linkage system remains unchanged relative to a prior art pump jack intended for vertical wells. This modification is a simple and effective means of addressing an angled wellhead while preserving the well-known operating characteristics of a prior art pumping unit. Torque factors, polished rod position, speed, acceleration, stroke length, and effective counterbalance remain unchanged.

20230111681, Apr 13, 2023

Dec 12, 2022

18/064478

- Houston TX, US
Roddy W. Simpson - Highlands TX, US
Joseph E. Kutac - Magnolia TX, US
Robert M. Wilkerson - San Angelo TX, US

Priority Artificial Lift Services, LLC - Houston TX

F16K 15/06
E21B 43/12
E21B 34/10

A check valve may include a housing having a bore therethrough, the bore including an inner surface and a bearing face; a check seat adaptor coupled to the housing; a seal in the housing, the seal including a seat bore; and a dart disposed in the bore between the seal and the bearing face and axially moveable between closed and open positions. The dart may include a tail and a head that has at least one dart inlet and sealingly engages the seal when the valve is closed. The tail defines an inner chamber having an outlet that is in fluid communication with the bore. The dart inlet(s), the inner chamber, and the outlet may be in fluid communication and together define a dart flow path through the dart. A biasing device may urge the dart toward the seal.