US 11,814,939 B2
System and method for valve greasing in a well tree
Mark Viator, Houston, TX (US); Yang Chen, Houston, TX (US); Payal Desai, Houston, TX (US); Aleem Aman Khokhar, Houston, TX (US); Nivedita Sharma, Noida (IN); and Jeffery Traylor, Odessa, TX (US)
Assigned to CAMERON INTERNATIONAL CORPORATION, Houston, TX (US)
Appl. No. 17/755,071
Filed by Cameron International Corporation, Houston, TX (US)
PCT Filed Oct. 23, 2020, PCT No. PCT/US2020/057082
§ 371(c)(1), (2) Date Apr. 20, 2022,
PCT Pub. No. WO2021/081339, PCT Pub. Date Apr. 29, 2021.
Claims priority of provisional application 62/926,171, filed on Oct. 25, 2019.
Prior Publication US 2022/0290547 A1, Sep. 15, 2022
Int. Cl. E21B 34/02 (2006.01); F16N 11/00 (2006.01); F16N 13/22 (2006.01); E21B 43/26 (2006.01)
CPC E21B 43/2607 (2020.05) [E21B 34/02 (2013.01); F16N 11/00 (2013.01); F16N 13/22 (2013.01); F16N 2250/04 (2013.01); F16N 2250/40 (2013.01); F16N 2280/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system for use in a well application, comprising:
a well tree having a flow cross and a plurality of valve sections coupled to the flow cross, the plurality of valve sections comprising actuatable valves, each actuatable valve having a grease port through which grease may be received to flush debris from the actuatable valve;
a greasing system having a grease reservoir, a grease pump which is fed by grease from the grease reservoir, and a grease distribution network connected between the grease pump and the grease ports, the grease distribution network comprising a plurality of grease valves actuatable to control flow of grease to selected grease ports;
a control system connected to the grease valves to selectively open and close the grease valves; and
a sensor system to sense valve position of each actuatable valve, the sensor system coupled to the control system to provide an indication to the control system when valve actuation is affected by debris in a given actuatable valve.