The study of a highly efficient and environment-friendly scale inhibitor for calcium carbonate scale in oil fields
| Autor: | Zhi Yang, Xiankang Zhong, Qi Xiong, Heng Wang, Zebin Yin, Junying Hu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Thermogravimetric analysis
020209 energy Energy Engineering and Power Technology 02 engineering and technology chemistry.chemical_compound 020401 chemical engineering Copolymer Geochemistry and Petrology 0202 electrical engineering electronic engineering information engineering Vinyl acetate TA703-712 Petroleum refining. Petroleum products 0204 chemical engineering Fourier transform infrared spectroscopy Scale inhibitor Maleic anhydride Geology Solution polymerization Engineering geology. Rock mechanics. Soil mechanics. Underground construction Geotechnical Engineering and Engineering Geology Fuel Technology Monomer Sulfonate chemistry Ammonium persulfate Calcium carbonate TP690-692.5 Nuclear chemistry |
| Zdroj: | Petroleum, Vol 7, Iss 3, Pp 325-334 (2021) |
| ISSN: | 2405-6561 |
| DOI: | 10.1016/j.petlm.2021.01.005 |
| Popis: | A highly efficient and environment-friendly scale inhibitor (MA-VA-VS) was synthesized via free radical solution polymerization method, where maleic anhydride (MA), vinyl acetate (VA) and vinyl sulfonate (VS) acted as monomers, while ammonium persulfate was used as initiator. The inhibition performance and the structure as well as properties was characterized using static jar measurement and dynamic test, Fourier transform infrared spectroscopy and thermogravimetric analysis. The surface morphology and composition of scale formed in the solution were examined using scanning electron microscopy and X-ray diffraction, respectively. The binding energies of inhibitor with calcite (104) face were calculated using Materials Studio 2017 (MS) at 323 K. The results show that the inhibition efficiency gradually increases with increasing inhibitor concentration. While as the Ca2+ concentration increases, the efficiency first increases and then decreases. With the increase in temperature or pH, the efficiency generally decreases. It is confirmed that the inhibition efficiency can reach 91.4% when 150 mg/L MA-VA-VS is used in a flow condition. Both the calculated binding energy and inhibition performance evaluation results demonstrate that the scale inhibition performance of MA-VA-VS is better than a commercial scale inhibitor (HPMA). The excellent inhibition performance of this inhibitor is due to its chelation and dispersion properties. |
| Databáze: | OpenAIRE |
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