Abstract: An electromagnetic-mechanical locking device applied to a subsurface safety valve comprising an electromagnetic-mechanical coupler formed electromagnet (4), ferromagnetic bulkhead (5) in solidarity to the mobile part (6), actuated by spring (9), in addition to locking element (7), and when activated, the electromagnet (4) creates a magnetic field that attracts the ferromagnetic bulkhead (5), along with the mobile part (6), moving this set towards the electromagnet (4), and compressing the locking element (7). During the movement, the mobile part (6) shifts the locking element (7) to the locking position, until it reaches its coupling on the flow tube (3), where it is maintained with compression locking element (7), configuring a trigger device. When the power supplied to the electromagnet (4) ceases, the electromagnetic attraction force of the ferromagnetic bulkhead (5) is cancelled, and the locking element (7), until then retracted, is distended, causing the return of the mobile part (6) to initial position.

Abstract: 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.

Abstract: The invention relates to a valve-type (200) fully electric tool for downhole flow control using a hollow-shaft motor. Said valve (200) comprises: a housing (105) provided with an infinitely variable choke (109) wherein seals (106, 107) work as gaskets for both the outside and inside of the valve (200); a hollow-shaft servomotor (101) inside said housing (105) attached to a nut (102), and, additionally, when said motor (101) is activated, the motor directly moves a sliding sleeve (103) provided with an infinitely variable choke (108) axis-wise said valve; and in which the movement of said motor (101) is generated by means of a spindle (I04), created on the very same said sliding sleeve (103), and in which said valve (200) is operated from the surface by a single electric cable (112).