US 12,404,752 B2
Integrated control of horizontal and vertical movements of a long-stroke pumping unit
Daniel Flores, Windsor, CO (US); and Paul Roberts, Longmont, CO (US)
Filed by ChampionX LLC, Sugar Land, TX (US)
Filed on Sep. 26, 2024, as Appl. No. 18/898,047.
Claims priority of provisional application 63/585,798, filed on Sep. 27, 2023.
Prior Publication US 2025/0101840 A1, Mar. 27, 2025
Int. Cl. E21B 43/12 (2006.01); B66F 3/25 (2006.01); B66F 3/46 (2006.01)
CPC E21B 43/127 (2013.01) [B66F 3/25 (2013.01); B66F 3/46 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A long-stroke pumping unit comprising:
a base frame comprising a pair of parallel rails, wherein the base frame is configured to be positioned on a foundation that is proximate to a wellhead, wherein an end of the base frame faces the wellhead;
a tower connected to each of the pair of parallel rails near the end of the base frame;
a hydraulic cylinder having an end connected to the base frame or to the tower and an opposite end connected to the foundation;
a first vertical hydraulic jack coupled to one of the pair of parallel rails at the end of the base frame;
a second vertical hydraulic jack coupled to another of the pair of parallel rails at the end of the base frame;
a hydraulic power source fluidly connected to the hydraulic cylinder, to the first vertical hydraulic jack, and to the second vertical hydraulic jack; and
a control interface coupled to the hydraulic power source and configured to control the hydraulic power source for a movement of i) the hydraulic cylinder between a first extended position and a first retracted position, ii) the first vertical hydraulic jack between a second extended position and a second retracted position, and iii) the second vertical hydraulic jack between a third extended position and a third retracted position.