line 94 electromechanical shifter 94 may be received within sleeve 74 in a manner similar to that described above with reference to mechanical shifter 82 of fig3 once in place electromechanical shifter 92 may be energized via electric line 94 such that sleeve 74 may be rotatably shifted relative to base pipe 64 in the illustrated embodiment sleeve 74 has been rotated ninety degrees relative to base pipe 64 this rotation increases the distance between openings 76 of sleeve 74 and openings 66 of base pipe 64 accordingly the formation fluid being produced into fluid flow control device 90 must travel an increased distance in annulus 78 relative to the position shown in fig2 this increased distance equates to an increased pressure drop in the formation fluids the desired amount of pressure drop may be achieved by selecting the amount of circumferential misalignment between openings 76 of sleeve 74 and openings 66 of base pipe 64 also it should be noted that sensors such as position sensors pressure sensors temperature sensors fluid composition sensors and the like may be used in conjunction with electromechanical shifter 92 these sensors may be permanently disposed downhole or may be carried downhole with the electromechanical shifter 92 referring next to fig5 therein is depicted a fluid flow control device of the.