Method of Raising Oil Temperature at the Outlet of Oil Well and Structure of Oil Well

Abstract

The invention discloses a method for improving oil temperature at an outlet of an oil well and a corresponding oil well structure. The method for improving the oil temperature at the outlet of the oil well and the corresponding oil well structure are characterized in that a plurality of gravity-type sleeve-shaped heat pipes are connected into a whole and used as oil pipes so that crude oil passes through the centers of the gravity-type sleeve-shaped heat pipes and are pumped out of the oil well. Airtight spaces between pipe walls of the gravity-type sleeve-shaped heat pipes are filled with working media and are vacuumized. The lower portion of each gravity-type sleeve-shaped heat pipe is a heat pipe evaporation segment, and the upper portion of each gravity-type sleeve-shaped heat pipe is a heat pipe condensation segment. Heat passing through the bottom ends of the gravity-type sleeve-shaped heat pipes is uploaded step by step, and then the crude oil passing through the centers of the gravity-type sleeve-shaped heat pipes continuously carries out heat exchange with pipe walls so that the viscosity of the crude oil can be reduced and the crude oil can not become thick. Consequently, the temperature of the crude oil in the gravity-type sleeve-shaped heat pipes nearest to oil outlets can meet the requirement for the thickening-preventing oil outlet temperature. The method for improving the oil temperature at the outlet of the oil well and the corresponding oil well structure have the advantages of being energy-saving, simple, easy to realize and capable of substantially reducing oil extraction cost.

Description

technical field

[0001] The present invention relates to an oil production method and an oil pipe structure, in particular to a method for recovering relatively deep underground high-temperature crude oil heat and pumping it to the wellhead during the oil pumping process of heavy oil wells to improve the fluidity of pumped crude oil, especially heavy oil and oil well structure. Specifically, it is a kind of electric heating device and its control device that can reduce the power consumption of heavy oil wells, and even remove the entire sucker rod, or inject high-temperature and high-pressure steam into the oil well, so that the pumping operation of the pumping system becomes easier. Simple, improving the fluidity of crude oil, reducing the accident rate of oil pumping and improving the oil temperature at the outlet of the oil well and the structure of the oil well. Background technique

[0002] As we all know, during the crude oil extraction process of heavy oil wells, elec...

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