Experimental study of swelling and rheological behavior of preformed particle gel used in water shutoff treatment

Lenji, Majid Abedi; Haghshenasfard, Masoud; Sefti, Mohsen Vafaie; Salehi, Mahsa Baghban; Heidari, Aghdas

doi:10.1016/j.petrol.2018.06.029

Cited by 65 publications

(49 citation statements)

References 33 publications

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“…Relative to the water cut of water flooding, the maximum decrease in water cut after flooding HS-PP is 32%. The result is similar to the result of Lenji et al (2018). Their results show that PPG was able to reduce water production by 30-65%.…”

Section: Mechanism Of Hs-pp Floodingsupporting

confidence: 82%

“…New technology for improving oil recovery in heterogeneous reservoir is of great significance. PPG flooding and synergistic system containing PPG featuring in excellent ability of stabilizing oil production and controlling water cut has attracted extensive interest recently (Cui 2011;Cao 2013;Zhang et al 2014;Goudarzi et al 2014;Chenet al 2017;Zhao et al 2018;Lenji et al 2018;Liu et al 2018). In this flooding system, PPG was mainly used for reservoir microstructure improvement.…”

Section: Introductionmentioning

confidence: 99%

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Experimental research on novel oil displacement and profile control system for heterogeneous reservoir

Liu

Zhang

et al. 2019

J Petrol Explor Prod Technol

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Polymer flooding and surfactant/polymer flooding (SP flooding) were mainly focused on the improvement in oil-water flow ratio and the reduction in oil-water interfacial tension. Preformed particle gel (PPG) flooding was mainly focused on the reservoir heterogeneity improvement. Each of these technologies has its own limitations. Heterogeneous system flooding (HS-PP flooding) was proposed as a novel flooding method aimed to improve oil-water flow ratio and reservoir heterogeneity at the same time. The HS-PP flooding system was composed of PPG and polymer solution. HS-PP flooding, polymer flooding and SP flooding as different chemical EOR methods were studied in laboratory in physical simulation heterogeneous model. Property of cubic expansion of PPG was researched by laser particle analyzer. The result shows that cubic expansion of PPG in simulation water is obvious and can be controlled. The effect of PPG on the diversion rate modification in double parallel sandstone model was obvious. The oil displacement experiments of the three different flooding systems with the same viscosity in physical simulation heterogeneous model were studied. The results show that the HS-PP flooding improves the oil recovery by 20.04%, comparing the result of 12.67% for polymer flooding and 16.66% for SP flooding, respectively. HS-PP flooding as a novel flooding method shows an excellent ability for stabilizing oil production and controlling water cut. The mechanism of the HS-PP flooding was discussed briefly. In addition to the viscoelastic displacement of polymers, the special circulation ability of "accumulating-deforming (collapsing)-accumulating again" of PPG is the main reason why the HS-PP flooding shows an excellent property for stabilizing oil production and controlling water cut.

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Section: Mechanism Of Hs-pp Floodingsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Experimental research on novel oil displacement and profile control system for heterogeneous reservoir

Liu

Zhang

et al. 2019

J Petrol Explor Prod Technol

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“…Poly(acrylamide-co-acrylic acid) potassium salt and sodium polyacrylate are both superabsorbent crosslinked polymers having a density of 0.54 g/mL at 25 °C [25,26]. Figure 3 shows the repeating terms of the chemical structures of both poly(acrylamide-co-acrylic acid) potassium salt and sodium polyacrylate used in this study.…”

Section: Methodsmentioning

confidence: 99%

“…In summary, up to date studies have investigated the effects of hydrogel composition (mainly monomer, crosslinker, and initiator concentrations) and operating conditions such as temperature, salinity and pH on hydrogel strength and swelling performance. In most studies [25][26][27][28], synthesis of the hydrogels has been through polymerisation of acrylicamide free radicals while in other studies, the polymerisation process has adopted some commercial polymer superabsorbents such as Liq-uiBlock 40 K and Daqing (DQ) with the chemical composition of polyacrylic acid and polyacrylamide. However, very few studies have focused on the specific application of different SPHs for downhole use in water control and management applications owing to the fact that this technology is in its infancy in the oil and gas industry.…”

Section: Electricalmentioning

confidence: 99%

“…When used for sealing applications, mainly as swellable packers, they swell to form a seal across non-circular holes in the formation. Lenji et al [16] carried out a series of experiments to investigate the swelling and rheological behaviour of preformed particle gel (PPG) made up of polyacrylamide and aluminium nitrate nanohydrate for potential application in water shutoff treatment in oil and gas reservoirs. This specific class of PPG functions as a superabsorbent and absorbs water equivalent in weight to 1000-2000 times its dry weight.…”

Section: Introductionmentioning

confidence: 99%

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Swelling performance of sodium polyacrylate and poly(acrylamide-co-acrylic acid) potassium salt

et al. 2019

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The application of superabsorbent polymer hydrogels in the oil and gas industry for reservoir and well management is gaining more traction. In this study, the swelling performance and adsorption kinetics of two commercial superabsorbent polymer hydrogels-poly(acrylamide-co-acrylic acid) potassium salt and sodium polyacrylate-were evaluated based upon their stimuli response to pH and salinity at varying temperature and reaction time periods. Characterisation and evaluation of the materials were performed using analytical techniques-optical microscopy, scanning electron microscopy, thermal gravimetric analysis and the gravimetric method. Experimental results show that reaction conditions strongly influence the swelling performance of the superabsorbent polymer hydrogels considered in this study. Generally, increasing pH and salinity concentration led to a significant decline in the swelling performance of both superabsorbent polymer hydrogels. An optimal temperature range between 50 and 75 °C was considered appropriate based on swell tests performed between 25 c to 100 °C over 2-, 4-and 6-h time periods. These findings serve as a guideline for field engineers in the use of superabsorbent polymer hydrogels for a wide range of oilfield applications. The study results provide evidence that the two superabsorbent polymer hydrogels can be used for petroleum fraction-saline water emulsions separation, reservoir zonal isolation, water shutoff and cement plugging applications.

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Behavior of partially hydrolyzed polyacrylamide/polyethyleneimine reinforced with coal fly ash for preformed particle hydrogels

Pereira

Oliveira

et al. 2020

J of Applied Polymer Sci

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High water production and low oil recovery are attributable to reservoir heterogeneity, making extraction economically inefficient. To improve oil production, it is important to solve permeability issues, to allow a more uniform and efficient sweep. In recent years, several studies of preformed particle gel (PPG) have been performed reduce reservoir heterogeneity and enhance oil recovery. In this work, the effect of coal fly ash (CFA) on hydrolyzed polyacrylamide (PHPA) crosslinked with polyethyleneimine PPG were evaluated regarding thermal, rheological, and structural properties. The rheological results showed an increase in elastic behavior with the presence of CFA. Thermal analysis revealed degradation resistance of 271% with only 1.0% CFA. The swelling test proved that the presence of CFA supports the absorption of a brine solution. The results suggest a significant increase in properties assessed with small CFA contents due to a strong interaction between CFA and three‐dimensional polymer networks.

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Experimental study of swelling and rheological behavior of preformed particle gel used in water shutoff treatment

Cited by 65 publications

References 33 publications

Experimental research on novel oil displacement and profile control system for heterogeneous reservoir

Experimental research on novel oil displacement and profile control system for heterogeneous reservoir

Swelling performance of sodium polyacrylate and poly(acrylamide-co-acrylic acid) potassium salt

Behavior of partially hydrolyzed polyacrylamide/polyethyleneimine reinforced with coal fly ash for preformed particle hydrogels

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