A kind of anti-wax agent and its application

Abstract

The invention discloses a wax cleaning and preventing bacterial agent and use thereof. The bacterial agent is prepared by combining wax clearing bacteria HP and L-510 and wax preventing bacteria UI-3, HT, Po and No.6. Experiments prove that the bacterial agent has good wax clearing and preventing effects and that when the medicine concentration is higher than 100mg / L, the wax preventing rate reaches over 50 percent; and the results of wax cleaning and preventing experiments of 4 wells on site prove the effective rate of the bacterial agent reaches 100 percent, that the medicine administrationperiod is prolonged to 10 to 28 days from 5 days, that the construction process is simple, small in dose, low in cost, economic and efficient, that the application of the bacterial agent to waxed wells are wide, and that the bacterial agent is applicable to almost all waxed wells. The bacterial agent is expected to play a great role in cleaning and preventing wax in field of oil exploitation and has a bright prospect.

Description

technical field [0001] The invention belongs to microbial bacterial agents, in particular to a wax-removing and anti-wax bacterial agent suitable for removing and preventing wax in the field of petroleum exploitation. Background technique [0002] Wax removal is an important topic in oil well production management (Li Hongying, Zhang Jinjun. The influence of wax on the rheology of crude oil, Oil and Gas Storage and Transportation, 2002, 21(11): 6-12). Due to the differences in the physical properties of crude oil and the production conditions of oil wells, the wax deposition conditions of oil wells are different, and the wax removal and prevention process should also be adjusted at any time. At present, methods such as dosing of chemicals (chemical wax remover and anti-paraffin), installation of downhole solid slow-release agent, heat washing for wax removal, resin coating for wax removal, and paraffin eliminator are mainly used to remove and prevent paraffin, among which ch...

AI Technical Summary

Problems solved by technology

At present, oil production sites mainly use methods such as adding medicine (chemical wax remover), installing downhole solid slow-release agent, thermal washing to remove wax, resin coating to prevent wax, and anti-paraffin eliminator to remove and prevent wax. There are problems such as large amount of wax, high frequency of dosing, short action time, and environmental pollution. With the increase of new wells put into production, the consumption of chemical wax-removing and anti-wax agents will increase. Air enters and returns from the oil pipe through the oil well pump, which not only affects the production, but also causes different degrees of pollution to the oil layer

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