A Synopsis on Completion Efficiency for Multi Stage Acid Fracturing Technology in Tight Carbonates Formations

Abstract

Open-hole multi-stage acid fracturing technology (MSF) has been widely implemented in the last few years in order to stimulate and maximize production rates from tight carbonate formations. A variety of factors can affect or contribute to the success of this technique which has to be taken into consideration to ultimately enhance the well performance. Among these factors, accurate well placement to maximize reservoir contact, fracture orientation relative to the stress direction, reservoir characteristics like lithology, stress, porosity development and optimum design of the well completion as well as proper execution of the stimulation treatment have strong influence on the final results and huge impact on the well productivity. This technical review of MSF jobs has made it possible to achieve a deeper understanding of the key factors controlling the outcome of the jobs and their relative importance. It will help optimize the future MSF candidate selection and their design, thereby achieving a high quality decision making process for completion selection. The objective of this paper is to discuss these factors and come up with conclusions and recommendations to optimize the use of this technology in future wells.