� “X” field is a field which produced by natural flow and located in SouthSumatera, Indonesia. This field starting to experience sand problem at productionstage. Stand alone sand screen is chosen as the appropriate sand control method for“X” field, sand screen is installed using slickline, so the term which used for sandscreen become rig less thru tubing sand screen. In its implementation, opening sizeof screen is not suitable, so that causing the occurrence of plugging and the well’sproductivity decrease continuously. Screen opening size is changed. In addition, IDof sand screen is changed and two sand screen is used, which role to increase thewell’s productivity and retard the occurrence of plugging.This final assignment will elaborate sand problem verification on “X” field,sand grains characteristics of three observed wells, how eventually stand alone sandscreen and slickline are chosen as the appropriate method, evaluation of screenopening size that already installed and new size determination, and productivityperformance determination after sand screen installed either for condition whenwrong opening size is used or for condition when new opening size, ID changed,and two sand screen is used.Evaluasi dan optimasi rig less thru-tubing sand screen sebagai sand control untuk lapangan XMeliana