Patent ID: 11927072
Assignee: OURO NEGRO TECNOLOGIAS EM EQUIPAMENTOS INDUSTRIAIS S/A
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A valve for downhole chemical injection control, connected to a single chemical injection fluid line for feeding downhole well chemical fluid injection locations, exclusively electrically-driven, by a single electric cable for power transmission and control, with on-board sensing electronics, said valve comprising:
a multi-position dosing sphere having a plurality of fluid line passages, each having a fluid inlet, for dosing the chemical injection fluid, driven by an electric motor, which rotates said dosing sphere by a transmission shaft, for selecting a dosing sphere passage for the chemical injection fluid,
a single turn of the dosing sphere commutes between all fluid inlets of all the possible positions of the fluid line passages;
each one of the dosing sphere fluid line passages configures a channel having a size and profile suited to the desired flow of chemical injection fluid;
a one-way single chemical injection line safety valve being installed from the single chemical injection fluid in connection with the dosing sphere;
wherein said one-way fluid line safety valve establishes a fluid communication path with the dosing sphere;
wherein the chemical fluid can be injected by way of a lower conduit in a column;
wherein the chemical fluid can be injected through an orifice of an upper lid in said dosing sphere into an annulus;
wherein said on-board sensing electronics are driven by a single electric cable; and,
wherein the on-board sensing electronics collect data on temperature, pressure, vibration and chemical concentration.