US 12,320,243 B2Granted

System and method for valve greasing in a well tree

AssigneeCameron International Corporation

InventorsMark Viator, Yang Chen, Payal Desai, Aleem Aman Khokhar, Nivedita Sharma, Jeffery Traylor

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Abstract

A technique facilitates greasing of valves on a well tree, e.g. a frac tree, according to a simple process which enables selected, individual valves to be greased when desired. In some applications, the greasing process may be automated and controlled via a greasing control system. According to an embodiment, a greasing system is connected with grease ports at a plurality of actuatable valves located in a well tree. The greasing system has a plurality of grease valves which may be associated with each of the actuatable valves, e.g. with each of the grease ports. A pump is used to pump grease to the grease valves and the grease valves are selectively actuated to open positions to provide controlled greasing of desired actuatable valves so as to remove debris from and to lubricate selected actuatable valves.

Claims11

Dependent claims

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;
and
a control system connected to the grease valves to selectively open and close the grease valves;
wherein the actuatable valves include a first actuatable valve, a second actuatable valve, and a third actuatable valve;
the plurality of grease valves includes a first grease valve mounted at the grease port of the first actuatable valve, a second grease valve mounted at the grease port of the second actuatable valve, and a third grease valve mounted at the grease port of the third actuatable valve;
and the first grease valve, the second grease valve, and the third grease valve are daisy-chained together across the first actuatable valve, the second actuatable valve, and the third actuatable valve with a shared grease line.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/489,207Filed 18 Oct 2023 · continuation
Priority: 25 Oct 2019
Published: US 2024/0044236 A18 Feb 2024
Granted: 3 Jun 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

E21B 29/10
Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming…
E21B 43/2607
By forming crevices or fractures: surface equipment specially adapted for fracturing operations
E21B 34/02
Valve arrangements for boreholes or wells: in well heads
F16N 11/00
Arrangements for supplying grease from a stationary reservoir or the equivalent in

Family

Application62/926,171Us provisional application · filed 25 Oct 2019
PCT/US2020/057082Parent of this continuation · filed 23 Oct 2020
US 2024/0044236 A1Pre-grant publication · published 8 Feb 2024
Application17/755,071Parent of this continuation
US 11,814,939 B2Parent of this continuation
US 2022/0290547 A1Published application
US 12,320,243 B2This patent

From the US filing history. Foreign family members aren’t listed.