Resin Systems as Evolving Solution Within the Industry to Replace the Conventional Remedial Cementing while Eliminating the Sustained Casing Pressure SCP

Abstract

Abstract Sustained casing pressure (SCP) has been a major challenge in terms of well integrity management, all around the world. Cement is the main element that provides isolation and protection for the well. The cause for pressure build-up in most cases is a compromise of cement sheath integrity that allows fluids to migrate through micro-channels from the formation to the surface. This paper presents lab work and field application that support the efficiency and reliability of an innovative resin system in enhancing the wellbore integrity. This paper presents the development for potential wellbore isolation issues for casings utilizing surface treatments. Due to the solids-free nature and enhanced bonding characteristics, the resin system was utilized. The preparation for this job was unique due to the extremely limited injectivity rate, it was not possible to perform the job by utilizing the conventional cementing equipment, hence a specialized high-pressure pump with-having a very low pump rate capability was utilized for this unique pumping methodology. Multiple treatments were mixed and pumped as planned to achieve the desired set of results. Lab testing included thickening time tests, rheology, contamination, and compatibility testing. Globally, conventional cement systems are often ineffective in potential remedial operations because of the high concentration of solids present within these systems. Therefore, the resin system is the best choice for this kind of potential remediation. The carefully timed setting ensured the optimum penetration and placement before the resin cured up and ensured the potential channel got permanently sealed. The proposed solution in this paper can add great value to restore the well's integrity and to save the rig's operational cost globally. The resin system is evolving as an emerging solution within the industry, replacing conventional cement in many potential crucial remedial applications. This paper highlights the necessary laboratory testing, field execution procedures, and treatment evaluation methods so that this technology can be a critical resource for such potential remedial operations in the future.