Investigation of Injection Strategy of Branched-Preformed Particle Gel/Polymer/Surfactant for Enhanced Oil Recovery after Polymer Flooding in Heterogeneous Reservoirs

He, Hong; Fu, Jingyu; Hou, Baofeng; Yuan, Fuqing; Guo, Lanlei; Li, Zongyang; You, Qing

doi:10.3390/en11081950

Cited by 17 publications

(19 citation statements)

References 32 publications

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“…They concluded that sequential injection of branched preformed particle gel and hydrolyzed polyacrylamide would provide higher oil recovery factor as the combination of these chemical agents can provide an adjustable fluid mobilization in different permeable zones due to its deforming and blocking agents. Moreover, hydrolyzed polyacrylamide can increase the branched preformed particle gel sustained effect, which can help to increase the resistance factor [41].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Hybrid Chemical Enhanced Oil Recovery Techniques: A Simulation Study

Zhou

Davarpanah

2020

Symmetry

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Simultaneous utilization of surfactant and preformed particle gel (henceforth; PPG) flooding on the oil recovery enhancement has been widely investigated as a preferable enhanced oil recovery technique after the polymer flooding. In this paper, a numerical model is developed to simulate the profound impact of hybrid chemical enhanced oil recovery methods (PPG/polymer/surfactant) in sandstone reservoirs. Moreover, the gel particle conformance control is considered in the developed model after polymer flooding performances on the oil recovery enhancement. To validate the developed model, two sets of experimental field data from Daqing oil field (PPG conformance control after polymer flooding) and Shengli oil field (PPG-surfactant flooding after polymer flooding) are used to check the reliability of the model. Combination of preformed gel particles, polymers and surfactants due to the deformation, swelling, and physicochemical properties of gel particles can mobilize the trapped oil through the porous media to enhance oil recovery factor by blocking the high permeable channels. As a result, PPG conformance control plays an essential role in oil recovery enhancement. Furthermore, experimental data of PPG/polymer/surfactant flooding in the Shengli field and its comparison with the proposed model indicated that the model and experimental field data are in a good agreement. Consequently, the coupled model of surfactant and PPG flooding after polymer flooding performances has led to more recovery factor rather than the basic chemical recovery techniques.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Hybrid Chemical Enhanced Oil Recovery Techniques: A Simulation Study

Zhou

Davarpanah

2020

Symmetry

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“…Selection of surfactants for foaming application in EOR, CO 2 sequestration, hydraulic fracturing, and other upstream applications is a challenging task [17][18][19][20][21][22][23][24][25]. A surfactant for foaming applications should be generally thermally stable, compatible with reservoir brine and other chemicals, have lower adsorption on reservoir rock, have high foamability and foam stability, and should be economically viable [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach to Stabilize Foam Using Fluorinated Surfactants

Kamal

2019

Energies

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Selection of surfactants for enhanced oil recovery and other upstream applications is a challenging task. For enhanced oil recovery applications, a surfactant should be thermally stable, compatible with reservoir brine, and have lower adsorption on reservoir rock, have high foamability and foam stability, and should be economically viable. Foam improves the oil recovery by increasing the viscosity of the displacing fluid and by reducing the capillary forces due to a reduction in interfacial tension. In this work, foamability and foam stability of two different surfactants were evaluated using a dynamic foam analyzer. These surfactants were fluorinated zwitterionic, and hydrocarbon zwitterionic surfactants. The effect of various parameters such as surfactant type and structure, temperature, salinity, and type of injected gas was investigated on foamability and foam stability. The foamability was assessed using the volume of foam produced by injecting a constant volume of gas and foam stability was determined by half-life time. The maximum foam generation was obtained using hydrocarbon zwitterionic surfactant. However, the foam generated using fluorinated zwitterionic surfactant was more stable. A mixture of zwitterionic fluorinated and hydrocarbon fluorinated surfactant showed better foam generation and foam stability. The foam generated using CO2 has less stability compared to the foam generated using air injection. Presence of salts increases the foam stability and foam generation. At high temperature, the foamability of the surfactants increased. However, the foam stability was reduced at high temperature for all type of surfactants. This study helps in optimizing the surfactant formulations consisting of a fluorinated and hydrocarbon zwitterionic surfactant for foam injections.

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“…The high and low permeability sand packs were used in combination to simulate the reservoir heterogeneity. The high and low permeability sand packs were prepared as follows [36,37]: The sand packs were positioned vertically and filled with formation brine, then fresh quartz sand with different mesh sizes were added into the sand packs and packed by vibration.…”

Section: Parallel Sand Pack Flooding Testmentioning

confidence: 99%

“…Figure 3 shows the schematic diagram of the experimental setup for the plate sand pack flooding. The experimental setup was composed of four parts: ISCO pump (Teledyne ISCO company, Lincoln, Lincoln, Nebraska, USA), sand pack model, Inductance-Capacitance-Resistance (LCR) digital bridge (Changzhou Tonghui Electronic Co., Ltd, Changzhou, China), and the oil-water saturation acquisition control system [37]. The oil-water saturation can be obtained by measuring the resistivity.…”

Section: Parallel Sand Pack Flooding Testmentioning

confidence: 99%

“…The mobility control ability of SP flooding under different injection strategies can be reflected by the changes in the fractional flow curve. The calculation method of fractional flow has been reported in our previously published papers [37,38]. Figures 4 and 5 show the changes in fractional flows versus injected pore volumes under different injection strategies.…”

Section: Fractional Flow Analysismentioning

confidence: 99%

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Optimization Design of Injection Strategy for Surfactant-Polymer Flooding Process in Heterogeneous Reservoir under Low Oil Prices

Chen

et al. 2019

Energies

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Surfactant–polymer (SP) flooding has significant potential to enhance oil recovery after water flooding in mature reservoirs. However, the economic benefit of the SP flooding process is unsatisfactory under low oil prices. Thus, it is necessary to reduce the chemical costs and improve SP flooding efficiency to make SP flooding more profitable. Our goal was to maximize the incremental oil recovery of the SP flooding process after water flooding by using the equal chemical consumption cost to ensure the economic viability of the SP flooding process. Thus, a systematic study was carried out to investigate the SP flooding process under different injection strategies by conducting parallel sand pack flooding experiments to optimize the SP flooding design. Then, the comparison of the remaining oil distribution after water flooding and SP flooding under different injection strategies was studied. The results demonstrate that the EOR efficiency of the SP flooding process under the alternating injection of polymer and surfactant–polymer (PASP) is higher than that of conventional simultaneous injection of surfactant and polymer. Moreover, as the alternating cycle increases, the incremental oil recovery increases. Based on the analysis of fractional flow, incremental oil recovery, and remaining oil distribution when compared with the conventional simultaneous injection of surfactant and polymer, the alternating injection of polymer and surfactant–polymer (PASP) showed better sweep efficiency improvement and recovered more remaining oil trapped in the low permeability zone. Thus, these findings could provide insights into designing the SP flooding process under low oil prices.

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Investigation of Injection Strategy of Branched-Preformed Particle Gel/Polymer/Surfactant for Enhanced Oil Recovery after Polymer Flooding in Heterogeneous Reservoirs

Cited by 17 publications

References 32 publications

RETRACTED: Hybrid Chemical Enhanced Oil Recovery Techniques: A Simulation Study

RETRACTED: Hybrid Chemical Enhanced Oil Recovery Techniques: A Simulation Study

A Novel Approach to Stabilize Foam Using Fluorinated Surfactants

Optimization Design of Injection Strategy for Surfactant-Polymer Flooding Process in Heterogeneous Reservoir under Low Oil Prices

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