Unconventional Remediation in the Utica Shale Using Advanced Resin Technologies

Abstract

Abstract Development of unconventional resources in the northeast region of the United States has resulted in oil companies and energy service companies working together to deliver technical solutions to challenges associated with safe and economical production of hydrocarbon from this region. One major challenge is remediation and prevention of annular pressure buildup. Recently, using resin sealant technologies during remediation operations has effectively and completely eliminated unwanted annular gas flow and pressure buildup in problematic wells. A key property of resin is its ability to be formulated free from solids, allowing it to deeply penetrate into tight fractures and crevices without the risk of particle bridging. However, previous resin systems have experienced adverse reactions when placed in contact with aqueous fluids. Recent chemical advancements have resulted in an oilfield resin system capable of being placed in the well adjacent to cement slurries and other water-based liquids in the fluid train. These advancements have enabled engineers to design successful remediation strategies and programs using previously unavailable techniques. This paper discusses resin chemistry and mechanical properties developments. In addition, a detailed case history from the Utica shale is presented in which a combination of resin and cement was used in a triple-stage remedial operation for annular pressure buildup. After the remedial operation, annular pressure was measured to be 0 psi.