A method is provided for reducing the radioactive material content of fluids withdrawn from subterranean reservoirs. The method involves deposition of sorbent solids within the reservoir matrix surrounding a production well to act as an in-situ filter for dissolved radionuclides present in reservoir...http://www.google.com.au/patents/US5196124?utm_source=gb-gplus-sharePatent US5196124 - Method of controlling the production of radioactive materials from a subterranean reservoir
