US 12,331,666 B2
Ratiometric system for autonomous lubrication of production equipment
Warren Daniel Sundet, Williston, ND (US); Kyle Collins Knox, Williston, ND (US); and Taylor Linn Oxendahl, Williston, ND (US)
Assigned to Double EE Service & Supply Co., Williston, ND (US)
Filed by Double EE Service & Supply Co., Williston, ND (US)
Filed on Dec. 22, 2023, as Appl. No. 18/394,586.
Claims priority of provisional application 63/437,099, filed on Jan. 4, 2023.
Prior Publication US 2024/0218815 A1, Jul. 4, 2024
Int. Cl. G05B 19/04 (2006.01); E21B 33/08 (2006.01); E21B 43/12 (2006.01); F01M 1/02 (2006.01); F01M 1/14 (2006.01); F16N 7/38 (2006.01); F16N 29/02 (2006.01)
CPC F01M 1/14 (2013.01) [E21B 33/08 (2013.01); E21B 43/127 (2013.01); F01M 1/02 (2013.01); F16N 7/38 (2013.01); F16N 29/02 (2013.01); G05B 19/0415 (2013.01); F16N 2230/10 (2013.01); G05B 2219/2618 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of automatic lubrication of a stuffing box coupled to a pumping rod of an oilwell pumping unit, the method comprising:
capturing, via an oilwell controller of the oilwell pumping unit, events associated with a plurality of pumping cycles of the oilwell pumping unit during operation of the stuffing box, wherein each of the events is associated with a completion of a pumping cycle of the oilwell pumping unit, wherein the pumping cycles of the oilwell pumping unit vary throughout a day;
determining, based on the captured events, an accumulated total of the events of the oilwell pumping unit;
responsive to the accumulated total of the events being within a specified range, activating, via a lubrication controller, a lubrication pump of a lubrication system for a specified time period as a function of a number of completed pumping cycles of the oilwell pumping unit, the lubricating pump being configured to deliver lubricant to the stuffing box; and
deactivating, via the lubrication controller, the lubrication pump when time elapsed after activating the lubrication pump equals to the specified time period.