Abstract: A valve for downhole chemical injection control, having a single chemical injection fluid line (2) to feed all the injection points, regardless of the number of zones, exclusively electrically-driven by a single electric cable (3), with embedded sensing electronics (7), which communicate and activate an electric motor (4), coupled to a multi-position sphere (5) for dosing the chemical injection fluid, which, according to the electric motor rotation, is moved, altering its position, to enable the passage of interest to be selected, according to the volume of chemical fluid to be injected, a single turn of the sphere being required to commute all the possible positions, the performance of which is low in power consumption, and for a short period of time, having after its positioning in the desired passage zero consumption to maintain this position.

Abstract: A fully electric downhole safety tool comprising a valve for flow blockage in oil and gas wells completion operations under emergency conditions is described. Valve comprises an actuation array constituted by a hollow shaft motor, nut, spindle and sliding sleeve, so that upon starting, the opening movement of said array compresses a valve closure spring and places the flapper sealing in the open position, enabling communication to occur between zones and fluid to flow. To close the valve, as soon as the electrical supply is ceased, the string relaxes, the sliding sleeve, under spring force, returns as is the case for the whole of the actuation array, and flapper sealing is exposed to the flow so that valve returns to the closed position, physically blocking the flow.

Abstract: A fully electric tool for continuous downhole flow control is described, said tool comprising a body and along the said body, actuating set(s), each actuating set comprising a passage system comprised of shaft(s) radially disposed along said cylindrical body, each of said shaft (s) being actuated with its opposed pair or in an independent way in a well-defined position or not, said shaft(s) being provided of spherical element(s) or sphere(s), provided of at least one window forming piles of sphere(s) in shaft(s), the rotation of said shaft(s)(108) of piles of sphere(s) enabling the opening or total or partial obstruction of holes by the total or partial coincidence of said window(s) of sphere(s) with said bore(s) of said cylindrical body.

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 present invention refers to a device for sensing photoluminescent materials, said device comprising at least a source of light configured to generate a beam of light that is transmitted to the outside of said device and hits a photoluminescent material; a photon counting detector configured to receive a response light generated by the illumination of photoluminescent material with said beam of light and convert it into an electrical signal; a signal processing electronic system configured to process said generated electrical signal; and a signal transmission means configured to transmit the signals generated by the said signal processing electronic system towards the outside of the said device.