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Processing crude oil to provide useful products generates a variety of problems. The petroleum pollution and oil spill and so on. Environmental experts are trying to use the exceptional trophic diversity of bacteria to solve problems of petroleum pollution. John Pirt of Kings College London discovered bacteria living in horse manure that can break down sewage at temperatures of 80C. He used these bacteria to develop a system for sewage disposal that alternatives these high-temperature bacteria that with bacteria that grow at 37C. Pirts system nearly eliminates the organic material in sewage sludge, leaving water and some mineral waste. The mineral waste contains heavy metal contaminants that can be isolated and either disposed of or recycled.

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A large amount of mineral, macromolecular organics and macromolecular additives exist in drilling wastewater, and form a complicated stable multilevel wastewater system. Biological process is the most efficient way of removing organic matter from drilling waste waters. These 1iving systems rely on mixed microbial cultures to decompose, and to remove colloidal and dissolved organic substances from solution. The most important factors affecting biological growth are temperature, availability of nutrients, oxygen supply, pH, presence of toxins and, sunlight. Drilling waste waters commonly contain sufficient concentrations of carbon, nitrogen, phosphorus, and trace nutrients to support the growth of a microbial culture. Theoretically, a BOD to nitrogen to phosphorus ratio of 100/5/1 is adequate.

At present, submersible electric pump is the main oil production equipment in the world’s oil fields. Because the pump is tested with clean water as the medium when it leaves the factory, it can not be widely used in all oil fields. In this paper, a prototype submersible electric pump is improved and designed according to the actual working conditions, and a new heavy oil pump is obtained, which can be widely used in heavy oil Wells. The static pressure distribution and velocity vector distribution under the actual working conditions were simulated by CFD, and the feasibility was verified. It provides theoretical basis and technical guidance for solving the adverse effect of high viscosity produced liquid on pump, and has certain guiding significance for oilfield pump selection. So as to effectively save electricity and rationally exploit energy.