Studing on the Scaling Mechanism of Injection Well Pipe

Abstract:

During oil production from several wells in Daqing, significant productivity decline was noticed. One of the reasons behind the productivity decline might be scale precipitation. The corrosion is very serious for scaling of the fifth injection wells. It brings enormous damage to oilfield and seriously influences the oilfield production and development. Based on the research of scaling of three different sections of injection wells, we clear the distribution of injection wells scaled and the source of injection water. Choose the representative scaling wells of three blocks and injection water sample, use modern instrument analysis method to analysis the composition of water and scale sample. According to the data analysis, to certain the components of the sample scale, put forward the main form of scaling mechanism, and provide a dependable basis for making effective measures of scale removal and prevention.

• Periodical: Advanced Materials Research (Volumes 113-116)
• Pages: 231-234
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.113-116.231
• Online since: June 2010
• Authors: Guo Lin Jing, Shu Lin Li, Li Jie Xing, Ying Ying Guo, Ling Rong Kong
• Keywords: Corrosion, Scale Sample Analysis, Scaling Mechanism, Water Quality Analysis

References

[1] Castano, R., Villamizar, J., Diaz, O., Avila, M., Gonzalez, S., Dalrymple, E.D., Milson, S., Everett, D., 2002. Relative permeability modifier and scale inhibitor combination in fracturing process at San Francisco field in Colombia, South America. SPE 77412, Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, September 29- October 2.

DOI: 10.2118/77412-ms

[2] Kokal, S., Dawood, N., Fontanilla, J., Al-Ghamdi, A., Nasr-El-Din, H., Al-Rufaie, Y., 2002. Productivity decline in oil wells related to asphaltene precipitation and emulsion blocks. SPE 77767, Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, September 29-October 2.

DOI: 10.2118/77767-ms

[3] A. Morizot, A. Neville and T. Hodgkiess, J. Cryst. Growth, 198-199 (1999) 738.

[4] A. Zafiropoulou and E. Dalas, J. Cryst. Growth, 219 (2000) 477.

[5] Graham, G.M., Sorbie, K.S., 1995. Examination of the change in molecular weight obtained during inhibitor squeeze treatments using polyacrylate based inhibitors. SPE International Symposi- um on Oilfield Chemistry. SPE, vol. 29000. San Antonio, USA.

DOI: 10.2118/29000-ms

[6] Sorbie, K.S., 1991. The improved design of scale inhibitor squeeze treatments. Water Management Offshore Conference, Aberdeen, UK.