This paper presents a case history of ARCO Oil and Gas Company's (AOGC1) Naturally Occurring Radioactive Material (NORM) injection project that was conducted offshore in the Gulf of Mexico. The unique aspect of this project is that it was performed entirely offshore, using drill cuttings injection equipment. This project involved grinding and injecting approximately 1300 bbls of various NORM. Discussed in the paper is the historical regulatory considerations, reservoir selection and permitting process, pre-frac design process, the washing, grinding and injection process, and on-site data frac analysis and fracture post-mortem.

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