The paper discusses the importance of reducing water production from hydrocarbon wells to prolong their lifespan. Gel treatments are commonly used for water shut-off applications, but traditional methods have limitations. The paper proposes enhancing gel performance by incorporating nanomaterials like nanosilica, nanoclay, and graphene. These nanomaterials can improve gel properties such as gelation time and strength. The study reviews the benefits of nanomaterials in different gel systems, including in situ gel, preformed particle-gel, and nanosilica-based fluid. Nanomaterials are found to enhance gel properties significantly, with nanosilica-based gels exhibiting exceptional plugging efficiency. Additionally, modeling is discussed as a tool to overcome operational challenges. The study also explores colloidal gels as an alternative to polymers for addressing high water production in oil fields. Bottle tests were conducted to characterize the gels, and their applicability in porous media was inspected using a dual-patterned glass micromodel. Results indicate that increasing NaCl concentration can alter gel behavior, and rheology tests align with gelation times. The study demonstrates the effectiveness of solid gels in controlling water conformance, with promising results in oil recovery.