BaSO_4 Precipitation Impact on the Permeability of a Pressure Porous Medium/ BaSO 4 Impacto da Precipitação sobre a Permeabilidade de um Meio Poroso de Pressão

Vitória Felicio Dornelas, Cristiano Severo Aiolfi, Valéria Silva dos Santos, Daniel da Cunha Ribeiro, Fábio de Assis Ressel Pereira, André Leibshon, Ana Paula Meneguelo

Abstract


Currently, the petroleum sector is facing new challenges like ultra-profound waters and thick pre salt layers. One of the main concerns is the inorganic scale in production equipment. Scales can occur throughout the chain of petroleum production, from the reservoir until the surface facilities. Its occurrence in the near well region of the reservoir generates a greater impact on the fluids production, where the removal or inhibition of the salt became more complex. The most common scale in the near well region is barium sulfate BaSO4 because its low solubility. This work proposes an experimental study that aims to monitor the effect of BaSO4 precipitation on sandstone porous medium pressure drop using a core holder. Distinctly from others works in the area, this study used a simpler solution to observe the impact of precipitation reaction. The porous medium was saturated with a solution of barium chloride (BaCl2) at 250ppm and afterwards was injected a solution of sodium sulfate (NaSO4) at 2750 ppm. The injection rate was 5 x10-8 m³/s for two hours under a pressure of 6.985MPa. During the precipitation reaction was observed an increase in the pressure of the system. This increase of pressure is a consequence of permeability reduction occasioned by the deposition of barium sulfate. The effect of precipitation can be observed more significantly at the first twenty minutes of reaction. At the end of experiment was observed a permeability reduction of more than 60% in the porous medium. The properties of the porous medium was measure, however this methodology could not estimate the rate of barium sulfate scale


Keywords


Inorganic scale, Barium sulphate, Permeability, Porosity.

Full Text:

PDF

References


Thomas, J. E., 2001, “Fundamentos da Engenharia de Petróleo,” Second edition. Petrobras. Ed. Interciência. Rio de Janeiro, 2001.

Rosa, A. J.; Carvalho, R. de S.; Xavier, J. A. D., 2006. “Engenharia de Reservatórios de Petróleo,” Petrobras. Ed. Interciência. Rio de Janeiro. 2006.

Nybakken, J. W., 1997. “Marine Biology: an ecological approach,” Addison Wesley. Longman, California. 481p, 1997.

Hajirezaie, S. et al. Numerical simulation of mineral precipitation in hydrocarbon reservoirs and wellbores. Fuel, v. 238, n. June 2018, p. 462–472, 2019.

Neto, J. B. de A., 2012, “Estudo da Formação de Depósitos Inorgânicos em Campos Petrolíferos. 2012.

Abib, G. A. P. Estudo da dissolução de incrustação de sulfato de bário por solução removedora à base de dtpa. p. 128, 2015.

Holditch, S. A., 2007, “Operations Petroleum Engineering Production Operations Engineering,” 2007.

Foidas, I.; ?tefanescu, D.-P. Considerations on sand control in natural gas wells. MATEC Web of Conferences, v. 121, p. 09003, 2017

HECK, N. C. Aspectos Gerais da Precipitação. p. 32–55, 2007.

Olajire, A. A. A review of oilfield scale management technology for oil and gas production. Journal of Petroleum Science and Engineering, v. 135, p. 723–737, 2015.

Kamari, A. et al., 2014, “Rigourous modeling for presiction of barium sulfate (barite) deposition in oilfield brines,” Fluid Phase Equilibria, v.366, p. 117-126. 2014

Ronquim, F. M. et al., 2018. “Improved barium removal and supersaturation depletion in wastewater by precipitation with excess sulfate. Journal of Water Process Engineering, v. 23, n. April, p. 265-276, 2018.

Uehara-Nagamine, E.; Armenante, P. M., 2001, “Effect of process variables on the single-feed semibatch precipitation of barium sulphate,” Chemical Engineering Research and Design, v. 79, n. 8, p. 979-988, 2001.

Ali, A. M.; Messaoud, H., 2019, “Barium Sulphate Deposites,” Energy Procedia, v. 157, n. 2018, p. 879-891, 2019.

Patricio, F. M. R. Modelagem Analítica para Reinjeção de Água Produzida com Efeitos na Incrustação de Sulfato de Bário. 2006

Vazirian, M. M. et al. Surface inorganic scale formation in oil and gas industry: As adhesion and deposition processes. Journal of Petroleum Science and Engineering, v. 137, p. 22–32, 2016.

BinMerdhah, A. B., 2012, “Inhibition of barium sulfate scale at high-barium formation water,” Journal of Petroleum Science and Engineering, v. 90-91, p.24-130, 2012.

Lauer, J. Efeito do controle da mobilidade e da redução da tensão interfacial no fator de recuperação do óleo: uma abordagem experimental. 2017.




DOI: https://doi.org/10.34117/bjdv.v7i5.29840

Refbacks

  • There are currently no refbacks.