Global Practices and Regulations for Land application and Disposal of Drill Cuttings and Fluids

Abstract

Abstract The process of exploration and production (E&P) in the oilfield typically generates large volumes of drilling fluids and cuttings that must be properly managed. Cuttings reinjection, thermal desorption, stabilization, landfill disposal and other techniques have been used to mitigate potential hazards from drill cuttings and used drilling mud. These methods have been historically favored methods of treatment from a regulatory perspective. However, land treatment avoids hauling drilling mud and cuttings long distances to disposal sites, allows on-site mitigation and natural attenuation of potential hazards, and promotes waste minimization. When properly applied, land application is an excellent technique to protect surface and groundwater supplies. Globally, common concerns about potential environmental damage from drill cuttings and fluids continue to drive research, technology and regulations with the goals of beneficial reuse and decreased footprints in oil and gas operations. Global trends for the introduction of new technology and the development of regulatory approaches are examined along with a critical review of the scientific research used to support these standards. Additionally, this paper contrasts and summarizes the current regulatory and management practices in active onshore oilfields. Results and information collected from this research are compiled onto an interactive site which is accessible to those interested parties in the industry as a reference tool. Industry sharing of knowledge and practices contributes to including environmentally protective standards and new technologies in the development of future regulations in all parts of the globe to protect our onshore resources. This information can aid key stakeholders to reach a higher level of understanding regarding the current state of onshore drilling waste management.