Oil well electric heating method and device

Abstract

The invention discloses an oil well electric heating method and device, belonging to the technical field of oil field development. By obtaining the load difference data of production wells that have been equipped with electric heating equipment and the electric heating method is to be improved, when the first load difference and the second load difference meet Y=0.9150*X+14.4314, Y‑2≤Y 1 When ≤Y+2, it is determined that the target well is waxed. Wherein, Y represents the second load difference reference value, X represents the first load difference, and Y 1 Denotes this second load difference, Y, X and Y 1 The units are kilonewtons. According to whether the oil well is waxed or not, the electric heating method is adjusted in time, and the load difference of the oil well is monitored, and the electric heating method is adjusted in time according to the load difference. Due to the high accuracy of the above method to determine whether the wax is deposited or not, the monitoring and adjustment based on the above determination process can avoid the continuous start and stop of the electric heating equipment caused by human factors, reduce the consumption of cables, and reduce the damage caused by wax. The well card problem caused by the card can be improved, and the economic benefit can be improved.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to an oil well electric heating method and device. Background technique [0002] Oil well wax deposition refers to the fact that wax is precipitated from crude oil during oil extraction, and accumulates and adheres to the surface of oil well facilities. In the process of oil extraction, with the change of temperature, pressure, and chemical balance of crude oil, different degrees of wax deposition will occur in oil wells. Wax deposition adheres to the surface of oil well facilities such as pump barrels, pistons, oil pipes, sucker rods, etc., which will reduce the oil flow area, damage the internal structure of the pump, increase the flow resistance of crude oil, and weaken the sealing of the pump barrel, resulting in reduced production of oil wells, Pumps leak or even wells get stuck. Electric heating of the oil well can increase the temperature of the crude oil in th...

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Problems solved by technology

[0004] This method has high requirements for personnel knowledge, and the judgment of oil well wax deposition is not accurate enough. The electric heating method formulated hereby will not only cause continuous start-up and shutdown of electric heating equipment, but also consume a lot of heating cables, and cannot solve the problem of waxing due to wax. The well card problem caused by the card, the economic benefit is low

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