Back to issue Methodological approaches to predicting equipment failures caused by scaling in oil production
UDC: 622.245.422+621.45.038.72
DOI: -
Authors:
1,1,1,11 TMK Research Center, Moscow, Russia
Keywords: scaling, oil well tubing, oil-and-gas pipeline, production problems, testing procedure, chloride-type scales, carbonate-type scales, sulfate-type scales
Annotation:
Nowadays, more and more oil and gas fields are the mature production fields. They are characterized by a decline of the reservoir fluids production rate, a significant increase of wells production water cutting (up to 90 %), accompanied by the extraction of large volumes of produced water during production. These factors contribute to the formation of various insoluble salts, which, over various periods of time, are accumulate in production tubing, on the surfaces of various wells equipment, and in oil and gas pipelines. It, further on, causes pipe diameter reduction and development of intensive local corrosion under scaling. The indicated problems significantly reduce the production rate and lead to large economic costs for eliminating the consequences of production problems. Thus, it is becoming increasingly necessary not only to search for chemical methods of preventing scaling, but also to estimate the susceptibility of pipe products to scaling and select methods of protection against it. Therefore, development of a universal methodology for tubular products laboratory testing requires analyzing and reviewing existing methods and equipment for studying the processes of scaling on oilfield equipment as well as the main factors that trigger the process of scaling formation.
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