Effect of a SILICA/HPAM Nanohybrid on Heavy Oil Recovery and Treatment: Experimental and Simulation Study.

Autor: Corredor LM; Instituto Colombiano del Petróleo, ECOPETROL S.A., Piedecuesta 681011, Colombia., Escobar S; Universidad Industrial de Santander, Bucaramanga 680006, Colombia., Cifuentes J; PSL proanálisis. Floridablanca 681001, Colombia., Llanos S; Meridian Consulting Ltd, Bogotá 110231, Colombia., Quintero HI; Instituto Colombiano del Petróleo, ECOPETROL S.A., Piedecuesta 681011, Colombia., Colmenares K; Instituto Colombiano del Petróleo, ECOPETROL S.A., Piedecuesta 681011, Colombia., Espinosa C; TIP LTDA, Girón, Bucaramanga 680002, Colombia., Delgadillo CL; Instituto Colombiano del Petróleo, ECOPETROL S.A., Piedecuesta 681011, Colombia., Romero Bohórquez AR; Grupo de Investigación en Química Estructural, Departamento de Química, Universidad Industrial de Santander, Bucaramanga 680006, Colombia., Manrique E; Citation Oil & Gas Corporation, Houston 77069, United States.
Jazyk: angličtina
Zdroj: ACS omega [ACS Omega] 2024 Aug 30; Vol. 9 (37), pp. 38532-38547. Date of Electronic Publication: 2024 Aug 30 (Print Publication: 2024).
DOI: 10.1021/acsomega.4c03772
Abstrakt: The addition of nanoparticles has been presented as an alternative approach to counteract the degradation of polymeric solutions for enhanced oil recovery. In this context, a nanohybrid (NH34) of partially hydrolyzed polyacrylamide (MW ∼12 MDa) and nanosilica modified with 2% 3-aminopropyltriethoxysilane (nSiO 2 -APTES) was synthesized and evaluated. NH34 was characterized by using dynamic light scattering, Fourier-transform infrared spectroscopy, and thermogravimetric analysis. Fluid-fluid tests assessed its viscosifying power, mechanical stability, filterability, and emulsion behavior. Rock-fluid tests were carried out to determine the nanohybrid's adsorption in porous media, the inaccessible pore volume (IPV), and the resistance (RF) and residual resistance factors (RRF). These tests were conducted under the conditions of a Colombian field. NH34 results were compared with four (4) commercial polymers (P34, P88, P51, and PA2). The viscosifying power of NH34 was observed to be similar to that of the four commercial polymers at a lower concentration, but it exhibits more resistance to mechanical and chemical degradation. The evaluation of the emulsion behavior showed that the nanohybrid neither changed the dehydration process nor altered the crude oil viscosity, favoring its extraction at the wellhead. However, the water clarification treatment must be adjusted because the oil and grease contents and turbidity increase with the residual concentration of NH34. Incremental oil recovery factors obtained by numerical simulation (compared to waterflooding) were P51 (5.5%) > P34 (4.9%) > P88 (4.8%) > NH34 (2.6%) > PA2 (0.9%). The polymers P51, P34, and P88 had a better recovery factor than NH34 and PA2 due to their lower values of residual adsorption and IPV. Few studies have been reported on polymer nanohybrids' emulsion and flow behavior. Therefore, further research is needed to enhance our understanding of the fundamental enhanced oil recovery mechanisms associated with polymer nanohybrids.
Competing Interests: The authors declare no competing financial interest.
(© 2024 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
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