فهرست نشریات علمی دسترسی آزاد ایران

Modern challenges in oil and gas industry necessitate the continuous advancement of drilling and production technologies. The depletion of conventional hydrocarbon reserves compels operators to develop fields located in geologically complex and technically demanding environments. This situation requires the implementation of innovative engineering solutions to address the increasing complexity of resource extraction. Greater well depths, operations under extreme climatic conditions, and strict environmental regulations further complicate drilling activities and demand robust technological responses. In this context, casing cementation remains a critical and technically complex stage of well construction, as the quality of this operation directly affects well integrity, operational safety, and long-term performance. Effective cementing ensures hydraulic isolation of the annular space between the casing and the formation, thereby preventing uncontrolled migration of formation fluids between geological zones. This article presents a review of recent research focused on evaluating the mechanical properties of hardened cement stone. Special attention is paid to the influence of mineral and chemical additives such as ground granulated blast furnace slag, silica fume, and volcanic ash on key structural and mechanical parameters including compressive strength, flexural strength, fracture resistance, and impact toughness. In addition, the role of fibrous materials including basalt, carbon, polypropylene, and nylon fibers in enhancing the durability of cement composites under static and dynamic loading conditions is examined. The findings provide a basis for the development of improved cementing materials designed for use in complex and high-stress downhole environments.