In order to share some lesson learned / concluding remarks from the design and use of monobore completion configuration, many case studies have been discussed in the thesis to demonstrate the benefits of mono bore well completion and optimize the mono bore well completion according to the different reservoir parameters. The mono bore well completion is most economic in sense of less number of equipments used and low maintenance is required as compare to conventional completion. The mono bore well completion is most economic in sense of less number of equipments used and low maintenance is required as compare to conventional completion. Mono bore well completion enables to increase the production rate which intern meaning that it will reduce the long term operating cost and reservoir will depleted in shorter period of time.