Rotary stirring and emulsification viscosity reduction flow string under high thick oil pump

Abstract

The invention discloses a rotary stirring and emulsification viscosity reduction flow string under a high thick oil pump. The rotary stirring and emulsification viscosity reduction flow string under the high thick oil pump mainly comprises an oil pipe (1) and an oil pump (2) arranged in the oil pipe (1), wherein a sucker rod (3) extending out of the ground is arranged on the oil pump (2). By adopting the flow string, the friction resistance when thick oil flows can be greatly reduced, the load of the sucker rod is effectively reduced, the problem that the thick oil is difficult to enter the pump is substantially solved, and the aims of improving the oil production effect and increasing the yield are fulfilled.

Description

technical field [0001] The invention relates to a rotary stirring emulsification viscosity-reducing oil production string under a high-viscosity oil pump. Background technique [0002] As the availability of conventional oil is decreasing day by day, heavy oil is becoming an important energy source for mankind in the next century. After more than 20 years of hard work, the global heavy oil industry has developed faster than conventional oil. The annual output of heavy oil and tar sands has increased from 20 million tons to nearly 100 million tons, and its importance has attracted increasing attention. The difficulty of heavy oil reservoir development is mainly manifested in two aspects: on the one hand, the viscosity of heavy oil is high, and the seepage resistance of heavy oil in the oil layer is large, so that the heavy oil cannot flow from the reservoir to the bottom of the well; on the other hand, even in the reservoir Under certain conditions, the heavy oil can flow in...

AI Technical Summary

Problems solved by technology

[0011] The emulsification viscosity reduction technology requires that the concentration of the viscosity reducer aqueous solution should be appropriate. If the concentration is too low, an oil-in-water emulsion cannot be formed; if the concentration is too high, the viscosity of the emulsion will not decrease further, which is uneconomical.

Moreover, some chemicals (such as caustic soda, water glass, etc.) tend to form water-in-oil emulsions at high concentrations, which will instead increase the viscosity of crude oil.

Temperature has little effect on the viscosity of the formed emulsion, but it affects the emulsification effect

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