Study effect of temperature on copolymerization reactions and performance of copolymer used as pour point depressant for Diamond crude oil, Blocks 01&02, offshore Vietnam

Than Dao Viet, Chuong Thai Hong, Tuy Dao Quoc, Trung Bui Dac

Abstract


Diamond oil field is located in Blocks 01&02 Offshore Vietnam. Crude oil from Diamond Well Head Platform (WHP) is evacuated to FPSO via 20km - 10” subsea flexible pipeline. The lowest seabed temperature in the field is 22˚C, while pour point temperature of this crude oil is very high (36˚C) due to high paraffin content (about 25% by weight). So studying to copolymerize a copolymer use to reduce pour point temperature of this oil is very important. The copolymer must have ability to reduce pour point temperature of the crude oil from 36˚C to 21˚C

The copolymer will be copolymerized from acrylate, methacrylate and vinyl acetate monomer. And there are many factors which impact on copolymerization reaction and therefore they will impact on the structure and performance of the said copolymer. One of the most important factor is the temperature of reactions.

Therfore the aim of this research is to choose an appropriated reaction temperature to produce a copolymer which can reduce pour point temperature of Diamond crude oil from 36˚C to 21˚C at dosage of 1.750ppmv.

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References


Huang, Z., Zheng, S., Fogler, H.S., Wax Deposition: Experimental Characterizations, Theoretical Modeling, and Field Practices. CRC Press, Boca Raton (FL), USA, (2015). https://doi.org/10.1201/b18482

Kelland, M.A., Wax (paraffin) control. In: Production Chemicals for the Oil and Gas Industry. CRC Press, (2009). https://doi.org/10.1365/s10337-010-1557-2

Sarica, C., Volk, M., Tulsa University Paraffin Deposition Projects. The University of Tulsa (US), (2004) 130. https://doi.org/10.2172/834175

Singh, P., Venkatesan, R., Fogler, H.S., Nagarajan, N., Formation and aging of incipient thin film wax-oil gels. AIChE J, 46 (5), (2000) 1059–1074. http://dx.doi.org/10.1002/aic.690460517

Al-Yaari, M. Paraffin wax deposition: mitigation and removal techniques. In SPE Saudi Arabia section Young Professionals Technical Symposium. Dhahran, Saudi Arabia, (2011). https://doi.org/10.2118/155412-MS

Yang, F., Zhao, Y., Sjöblom, J., Li, C., Paso, K.G., Polymeric wax inhibitors and pour point depressants for waxy crude oils: a critical review. J. Dispersion Sci. Technol, 36 (2), (2015) 213–225. https://doi.org/10.1080/01932691.2014.901917

Malcom A. Kelland, Production chemicals for the oil and gas industry. CRC Press, Tay Lor & Francis Group, New York, (2014). https://doi.org/10.1201/b16648

Lim Zhen Hao, Hikmat Said Al-Salim and Norida Ridzuan, A Review of the Mechanism and Role of Wax Inhibitors in the Wax Deposition and Precipitation. Pertanika J. Sci. & Technol. 27 (1) (2019) 499 – 526.

Kang, C., Crockett, R., & Spencer, N. D. The influence of surface grafting on the growth rate of polymer chains. Polymer chemistry. 7(2), (2016) 302–309. https://doi.org/10.1039/C5PY01521A

Alvares D, Lucas EF. Chemical structure effect of (meth) acrylic ester copolymers and modified poly (ethylene-covinyl acetate) copolymers on paraffin deposition prevention in crude oil. Petrol Science Technology.18, (2000) 195–202. https://doi.org/10.1080/10916460008949840

Hirabayashi T, Kikuta T, Kasabou K, Yokota K. Main-chain flexibility and side-chain crystallization of widely spaced combe-like polymers. Polymer Journal. 20, (1988) 693–8. https://doi.org/10.1295/polymj.20.693

Jordan EF. Side-chain crystallinity. III. Influence of sidechain crystallinity on the glass transition temperatures of selected copolymers incorporating n-octadecyl acrylate or vinyl stearate. Journal of Polymer Science Part A: Polymer Chemistry. 9, (1971) 3367–78. https://doi.org/10.1002/pol.1971.150091122




DOI: https://doi.org/10.51316/jca.2020.073

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