Flow control device

A device for control of the flow through a production tube placed in an oil well, the device comprising a portion of the production tube provided with through orifices and a protection system comprising several add-on sectors assembled around the portion of the tube, each add-on sector being provided with an associated inner stiffener penetrating into the portion of the production tube through at least one through orifice, at least one of the add-on sectors being provided with at least one opening extending through the sector and the associated inner stiffener;

• said protection system providing the device with resistance to wear by erosion, the device also comprising a sliding sleeve that can be controlled to adjust the flow;
• and said protection system having a clamping arrangement for clamping said add-on sectors to the tube independent of a geometric shape of the through orifices of the tube.

A device for control of the flow through a production tube placed in an oil well, the device comprising a portion of the production tube provided with through orifices and a protection system comprising several add-on sectors assembled around the portion of the tube such that said sectors form a protective envelope surrounding the portion of the tube, each add-on sector being provided with an associated inner stiffener penetrating into the portion of the production tube through at least one through orifice, at least one of the add-on sectors being provided with at least one opening extending through the sector and the associated inner stiffener;

• said protection system providing the device with resistance to wear by erosion, the device also comprising a sliding sleeve that can be controlled to adjust the flow and wherein each add-on sector comprises several openings with different shapes.

A device for control of the flow through a production tube placed in an oil well, the device comprising a portion of the production tube provided with through orifices and a protection system comprising several add-on sectors assembled around the portion of the tube such that said sectors form a protective envelope surrounding the portion of the tube, each add-on sector being provided with an associated inner stiffener penetrating into the portion of the production tube through at least one through orifice, at least one of the add-on sectors being provided with at least one opening extending through the sector and the associated inner stiffener;

• said protection system providing the device with resistance to wear by erosion, the device also comprising a sliding sleeve that can be controlled to adjust the flow and several sets of sectors, each set having different openings.