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

Claim 1:
2. A valve to control the injection of chemicals to reduce or eliminate encrustations and oxidation in an oil well downhole column or annulus, said valve comprising: a dosing sphere for injecting and controlling a chemical fluid;
said dosing sphere including a plurality of individual passages for receiving and transferring chemical fluid for injection into a column;
a single fluid chemical injection line, connected from a wellhead surface, into said valve, and in fluid communication with said dosing sphere and one selected dosing sphere passage;
an electric motor connected to a transition shaft that engages said dosing sphere for selection and rotation of said dosing sphere to align the single fluid chemical injection line with a single dosing sphere passage for receiving and transferring the injection chemical fluid to a column;
a single electric cable extending from said surface and connected to said electric motor, and
sensing electronics mounted in said valve and connected to the electric motor and said single electric cable to control rotation of the motor and the position of the dosing sphere, said sensing electronics being a man machine interface for communication between the downhole chemical injection valve and a surface system.