Frac packing is a specialized well completion technique that integrates hydraulic fracturing and gravel packing into a single operational procedure. This methodological approach aims to simultaneously stimulate hydrocarbon flow by creating conductive fractures and prevent formation sand production by placing proppant in both the fracture and the wellbore annulus. As an academic concept and research area, it investigates the complex physics governing coupled fluid flow, proppant transport, fracture propagation, and near-wellbore mechanics under high-pressure conditions. Its key characteristics involve operational efficiency through combined execution and its specific application in unconsolidated or weakly consolidated reservoirs prone to sand influx. The significance of frac packing lies in its critical role in optimizing hydrocarbon recovery and ensuring long-term wellbore stability and productivity in such challenging geological environments.