Method for handling inner scaling problem of offshore production platform pipeline device

Abstract

The invention discloses a method for handling an inner scaling problem of an offshore production platform pipeline device. The method for handling the inner scaling problem of the offshore production platform pipeline device comprises scale inhibition by a chemical method, scale removal by an electrochemical method and monitoring by a physical method. The method for handling the inner scaling problem of the offshore production platform pipeline device methodically handles the scaling problem of the offshore production platform pipeline device in a thought of scale inhibition, scale removal and scale monitoring, organically combines antisepsis and scaling removal into one by using the electrochemical method, overcomes the defect that scale inhibitor can not effectively decrease thickness of formed scale layers, avoids pipeline corrosion caused by acid cleaning and production delay due to acid cleaning and pipe replacing, and reduces manpower expenses; meanwhile, the method for handling the inner scaling problem of the offshore production platform pipeline device monitors scaling effect and water quality scaling trend by using the physical method, and excellently solves the problems that construction period is long and cleaning efficiency is low in an existing method for handling the inner scaling problem of the offshore production platform pipeline device. Besides, the method for handling the inner scaling problem of the offshore production platform pipeline device is convenient to operate, outstanding in using effect, and has excellent application value.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a treatment method for internal fouling of pipeline equipment on an offshore oil production platform. Background technique [0002] At present, traditional methods such as simple addition of scale inhibitors or pickling and pipe replacement are usually used for scaling treatment on offshore oil production platforms. Some platforms use mechanical descaling methods. The current existing methods have more or less shortcomings. place. Among the traditional descaling methods, the most widely used method is pickling. The process of pickling is mainly to stop the pipeline equipment and inject acid solution to dissolve the scale layer. The main component of pickling solution is hydrochloric acid with a concentration of about 10%. The chemical reaction equation is: [0003] CaCO3+2HCl=CaCl2+H2O+CO2↑ [0004] MgCO3+2HCl=MgCl2+H2O+CO2↑ [0005] FeS+2HCl=FeCl2+...

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to use a treatment method for the internal fouling of pipeline equipment on offshore oil production platforms, aiming to solve the inevitable defects of each existing descaling method. When the platform chooses a descaling method, it often chooses A single method or random mixing of several methods cannot effectively combine different antiscaling methods to complement each other, so it is difficult to achieve the expected treatment effect. At the same time, inappropriate antiscaling methods will also cause certain damage to pipeline equipment. There is still no reasonable and effective solution to the problem of calcium carbonate scaling on offshore oil production platforms

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