VNIPIpromtekhnologii JSC (Moscow, Russia)

A. G. Ivanov, Chief Specialist, Candidate of Engineering Sciences, Academician of the Russian Academy of Natural Sciences, ivanov_ag@mail.ru
A. V. Gladyshev, CEO

Sergo Ordzhonikidze Russian State Geological Exploration University (Moscow, Russia)
Yu. A. Arsentiev, Associate Professor, Candidate of Engineering Sciences, Corresponding Member of the Russian Academy of Natural Sciences
N. V. Soloviev, Head of Department, Professor, Doctor of Engineering Sciences, Academician of the Russian Academy of Natural Sciences

Khiagda JSC (Chita, Russia)
A. N. Mikhailov, CEO, Candidate of Engineering Sciences

Sustainability of the planned performance of uranium production in in-situ lea ching requires fast corrective decision-making in case of complication of geological, geotechnical and organizational background. This article discusses some engineering and organizational solutions aimed at enhancement of the uranium production process. The main factors of efficiency of in-situ uranium leaching in terms of construction, operation and abandonment of production wells are analyzed. The information on optimized selection of construction materials for the wells is given. Polymer casings should eliminate accidents connected with destruction and unsealing of production strings. This requirement is satisfied by casing pipes that meet all standards of regulatory documents and specifications: designation, threaded coupling, period and methods of storing before trip in wells. For the construction of in-situ leach wells, casing pipes made of unplasticized polyvinyl chloride with different modifiers are only applicable. Decision-making should be based on application of high-quality materials for the production well construction toward their trouble-free operation until depletion of production blocks. Trouble-free operation of wells needs technologies and equipment capable of ensuring high efficiency of the production process. The set goals are achievable owing to responsible decision-making by all participants and at all stages of uranium production, and thanks to material interest of the participants in the final result, i.e. economic performance of the production, and are dependent on the professional qualification of the process participants.

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