POLYMER GELS WITH A PISTON EFFECT

INTENDED FOR PIPELINE TRANSPORTATION

 There have been developed the gels based on the water-soluble polymers possessing a piston effect of motion in the pipeline.

Polymer gels are provided for:

  • cleaning of the inner surface of pipelines from mechanical impurities and gas accumulations;

  • water removal;

  • application of anticorrosive coatings on the inner pipeline surface;

  • liquid-liquid, liquid-gas phase separation at the consecutive pumping and hydrostatic tests.

    •
Gels advantages:

  • they may pass in the pipes of different diameters without being damaged;

  • they provide for a reliable hydraulic sealing;

  • they enhance the efficiency of chemical treatment;

  • they remove mechanical impurities;

  • their introduction does not require the application of standard scraper pig injection chambers;

    •

  • The gels move in the pipeline due to pressure difference.

  • The polymer gel length in the pipeline varies from 3 to 7 meters depending on its diameter.

Polymer separating (cleaning) gel

A schematic of removal of water and

other solutions from the pipeline

using a gel piston

1 - gel piston, 2 - water

A schematic of drying and application of anticorrosive coating on the inner surface of the pipeline using gel piston

1- anticorrosive solution, 2 -gel pistons,

3 - mechanical piston

Director of the Institute Prof. Lyubov K. Altunina

Head of the Laboratory Natalya V. Yudina

Dr. Ludmila M. Trufakina

Institute of Petroleum Chemistry

3, Akademichesky Avenue, 634055,Tomsk, Russia

Phone: (382-2) 491623, 492756, 491621

Fax: (7-382-2) 491457

Å-mail canc@ipc.tsc.ru Internet: http://www.ipc.tsc.ru/