Preparation and Evaluation of Phosphate Scale Inhibitor for Oilfield Produced Water

Abstract:

Phosphorus scale inhibitor is a kind of agent which can disperse insoluble inorganic salts in water, prevent or interfere with the precipitation and scaling of insoluble inorganic salts on metal surface, and maintain better heat transfer effect of metal equipment. Sodium triethylenetetramine hexamethylphosphonate (TETHMPS) and tetraethylenepentamine heptagon methylene phosphonic (TEPHMPS) were prepared by one-step synthesis method. The effects of temperature, concentration and mixing ratio on scale inhibition were investigated. The results showed that as the concentration of TETHMPS and TEPHMPS increases, the scale inhibition rate increases. At the same temperature, compared with TETHMPS, TEPHMPS has better scale inhibition performance, and the maximum scale inhibition rate can reach 93.59%. The scale inhibition rate of the synthesized scale inhibitor at 80 °C is better than that at 60 °C. The scale inhibition performance of the compound scale inhibitor is better than that of the single scale inhibitor, showing an ideal synergistic effect. When the concentration is 60 mg/L, the scale inhibition rate of TETHMPS is 94.26%, TEPHMPS is 94.55%, and the scale inhibition rate is above 91%.

• Periodical: Key Engineering Materials (Volume 814)
• Pages: 511-516
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.814.511
• Online since: July 2019
• Authors: Wei Wang*, Yong Gen Yi, Zhi Fei Sun, San Bao Dong, Wei Chao Du
• Keywords: Compounding, Evaluation, Phosphate, Preparation, Scale Inhibition Rate

References

[1] Yu W.D., Min Q.W., Li X.G., Some progresses and perspectives in study on the carrying capability of water resources. Arid Zone Research. 20(1) (2003) 60-66.

[2] Shuangchen M., Tiejia G., Min S., Analysis on ways of improving the concentration ratio of circulating cooling water. Industrial Water Treatment, 30(2) (2010) 1-4.

[3] Gang Chen, Jiao Yan, Li Lili, Jie Zhang, Xuefan Gu, Hua Song, Preparation and performance of amine-tartaric salt as potential clay swelling inhibitor, Applied Clay Science, 138 (2017) 12-16.

DOI: 10.1016/j.clay.2016.12.039

[4] Xuefan Gu, Jianjia Zhang, Jie Zhang, Gang Chen, Chao Ma, Zhifang Zhang, Stabilization of montmorillonite by ammoniated lignosulfonates and its use in water-based drilling fluid, Science of Advanced Materials, 9(6) (2017) 928-933.

DOI: 10.1166/sam.2017.3065

[5] Xinhuan H., Improvement of the determination method of the total phosphorus in industrial circulating cooling water. Industrial Water Treatment, 27(4) (2007) 78-80.

[6] Demadis K.D., Ketsetzi A., Degradation of phosphonate-based scale inhibitor additives in the presence of oxidizing biocides: collateral damages, in industrial water systems. Separation Science and Technology. 42(7) (2007) 1639-1649.

DOI: 10.1080/01496390701290532

[7] Baraka-Lokmane S., Sorbie K., Poisson N., Kohler N., Can green scale inhibitors replace phosphonate scale inhibitors: carbonate core flooding experiments. Petroleum Science and Technology, 27(4) (2009) 427-441.

DOI: 10.1080/10916460701764605

[8] Shi W.Y., Zhang S.G., Xia M.Z., Lei W., Wang F.Y., Quantum chemistry studies on the scale inhibition mechanism of methylene phosphonic acid. Technology of Water Treatment, 32(1) (2006) 37-40.

[9] Mao H.Y., Xu Z.F., Quantum chemistry study of polyaspartic acid scale-corrosion inhibitor. Industrial Water & Waster, 32(5) (2007) 12-15.

[10] Li X., Gao B., Yue Q., Ma D., Rong H., Zhao P., Effect of six kinds of scale inhibitors on calcium carbonate precipitation in high salinity wastewater at high temperatures. Journal of Environmental Sciences, 29 (2015) 124-130.

DOI: 10.1016/j.jes.2014.09.027

[11] Yu R., Fang P., Cui X.S., Lin M.X., Synergistic effect of pesa and other scale inhibitor. Industrial Water Treatment, 30(4) (2010) 69-71.

[12] Zeng D., Xiao J., Synthesis and application of an environment-friendly corrosion and scale inhibitor, carboxyalkylthiosuccinic acid. Industrial Water Treatment. 30(10) (2010) 21-25.

[13] Hu S.P., Li J.P., Xie Z.P., Duan H.B., Zhou A.H., Research about scale inhibition of citrate on Ba2+ and Ca2+. Jouranal of Petrochemival Universities, 30(2) (2017) 32-36.