公开(公告)号：US10995584B2

公开(公告)日：2021-05-04

申请号：US15558795

申请日：2016-10-26

申请人： OURO NEGRO TECNOLOGIAS EM EQUIPAMENTOS INDUSTRIAIS S/A

发明人： Felipe Gherren Noel

IPC分类号： E21B34/06 ,  E21B47/07 ,  E21B47/06 ,  E21B47/09 ,  E21B47/10

摘要： A valve-type electric tool for downhole flow control using a holo-shaft motor. Said valve comprises: a housing provided with an infinitely variable choke where in seals work as gaskets both the outside and inside of the valve; a hollow-shaft servomotor inside said housing attached to a nut, and, additionally, when said motor is activated, the motor directly moves a sliding sleeve provided with an infinitely variable choke axis-wise said valve; and in which the movement of said motor is generated by of a spindle, created on the very same said sliding sleeve, and in which said valve is operated from the surface by a single electric cable.