Evaluation of the Technological and Geochemical Conditions of Sludge Pits of the West Siberian Oil and Gas Complex
for Reclamation Process Optimization
L. A. IGNATYEV1 and L. F. ZHEGALINA2
1 Institute of Soil Science and Agricultural Chemistry, Siberian Branch of the Russian Academy of Sciences,
Ul. Sovetskaya 18, Novosibirsk 630099 (Russia),
ignatev37@ngs.ru
2 Monitoring JSC, Khanty Mansi Autonomous Area,
Ul. Studencheskaya 2, Khanty Mansyisk 628012 (Russia),
lije@mail.ru
Keywords: drilling waste, high molecular weight hydrocarbons content, ionic and ultimate composition, biotesting, toxicity
Pages: 477–481
Abstract
Data on the concentrations of hydrocarbons in the water phase and bottom settlings of sludge pits for the sludge pit technology of oil and gas well drilling are presented. Ionic and ultimate composition of the aqueous phase and bottom settlings were determined, as well as the concentration of radioactive elements. It was established that the high toxicity of sump hole content is mainly associated with the presence of high molecular fractions of hydrocarbons and the ions of sodium, potassium and chlorine. A substantial part of the sludge pit content is weakly toxic or non-toxic, it is confirmed by biotesting analysis. It is proposed to use the differentiated approach to the utilization of these wastes, in order to decrease material and energy expenses and increase the labour productivity.
UDC 504.064.47+504.054:622.816
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