Planning the demand of drag-reducing additives application

UDK: 665.7.038

DOI: 10.24887/0028-2448-2025-11-125-130

Key words: DRA types, relative consumption ratio by DRA type, cold season, warm season, polymer specific efficiency, DRA demand planning procedure

Authors: A.A. Fokina (The Pipeline Transport Institute LLC, RF, Moscow); F.S. Zverev (The Pipeline Transport Institute LLC, RF, Moscow); M.I. Valiev (The Pipeline Transport Institute LLC, RF, Moscow)

The objective of the study is to regulate the planning procedure for drag-reducing additives (DRA) consumption in a main pipeline. Taking into account the regular influence of seasonal temperature fluctuations on the DRA efficiency, conditional temperature groups are proposed for annual DRA demand planning procedure, such as «cold» and «warm» periods. Proposals for grouping various DRAs into the corresponding types are provided. Based on the results of a study examining the effectiveness of various DRA types, the concept of a relative consumption ratio of the corresponding DRA type is proposed and explained. To make the planning procedure for DRA consumption automated the idea to take into account the penalty coefficient was proposed, which shall enable to clearly notice significant overconsumption of a non-optimal DRA and subsequently automatically exclude it from the list when calculating the DRA consumption. The work proposes a DRA demand planning procedure relevant to the established objectives in reducing costs and operating expenditures as well as an example of a typical calculation of a DRA demand according to the proposed methodology. The output includes development and substantiation of the approach to estimation of DRA consumption for a main pipeline, where the use of DRA is planned, taking into account the relative consumption ratio of the corresponding DRA type and seasonal variations in the DRA efficiency.

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