A Supramolecular Reinforced Gel Fracturing Fluid with Low Permeability Damage Applied in Deep Reservoir Hydraulic Fracturing
Gel fracturing fluid is the optimum fracturing fluid for proppant suspension, which is commonly applied in deep reservoir hydraulic fracturing. The content of polymers and crosslinkers in gel fracturing fluid is usually high to meet the needs of high-temperature resistance, leading to high costs and...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Gels |
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| Online Access: | https://www.mdpi.com/2310-2861/10/1/2 |
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| author | Yongping Huang Xinlong Yao Caili Dai Yining Wu Lin Li Bin Yuan |
| author_facet | Yongping Huang Xinlong Yao Caili Dai Yining Wu Lin Li Bin Yuan |
| author_sort | Yongping Huang |
| collection | DOAJ |
| description | Gel fracturing fluid is the optimum fracturing fluid for proppant suspension, which is commonly applied in deep reservoir hydraulic fracturing. The content of polymers and crosslinkers in gel fracturing fluid is usually high to meet the needs of high-temperature resistance, leading to high costs and reservoir permeability damage caused by incomplete gel-breaking. In this paper, a supramolecular reinforced gel (SRG) fracturing fluid was constructed by strengthening the supramolecular force between polymers. Compared with single network gel (SNG) fracturing fluid, SRG fracturing fluid could possess high elasticity modulus (G′ = 12.20 Pa) at lower polymer (0.4 wt%) and crosslinker (0.1 wt%) concentrations. The final viscosity of SRG fracturing fluid was 72.35 mPa·s, meeting the temperature resistance requirement of gel fracturing fluid at 200 °C. The gel-breaking time could be extended to 90–120 min using an encapsulated gel breaker. Gel particles are formed after the gel fracturing fluid is broken. The median particle size of gel particles in the SRG-breaking solution was 126 nm, which was much smaller than that in the industrial gel (IDG) breaking fluid (587 nm). The damage of the SRG-breaking solution to the core permeability was much less than the IDG-breaking solution. The permeability damage of cores caused by the SRG-breaking solutions was only about half that of IDG-breaking solutions at 1 mD. |
| first_indexed | 2024-03-08T10:55:07Z |
| format | Article |
| id | doaj.art-3e9ddc514d7a49ee888878f58e0acd24 |
| institution | Directory Open Access Journal |
| issn | 2310-2861 |
| language | English |
| last_indexed | 2024-03-08T10:55:07Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Gels |
| spelling | doaj.art-3e9ddc514d7a49ee888878f58e0acd242024-01-26T16:38:24ZengMDPI AGGels2310-28612023-12-01101210.3390/gels10010002A Supramolecular Reinforced Gel Fracturing Fluid with Low Permeability Damage Applied in Deep Reservoir Hydraulic FracturingYongping Huang0Xinlong Yao1Caili Dai2Yining Wu3Lin Li4Bin Yuan5Shandong Key Laboratory of Oilfield Chemistry, China University of Petroleum (East China), Qingdao 266580, ChinaShandong Key Laboratory of Oilfield Chemistry, China University of Petroleum (East China), Qingdao 266580, ChinaShandong Key Laboratory of Oilfield Chemistry, China University of Petroleum (East China), Qingdao 266580, ChinaShandong Key Laboratory of Oilfield Chemistry, China University of Petroleum (East China), Qingdao 266580, ChinaSchool of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaSchool of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaGel fracturing fluid is the optimum fracturing fluid for proppant suspension, which is commonly applied in deep reservoir hydraulic fracturing. The content of polymers and crosslinkers in gel fracturing fluid is usually high to meet the needs of high-temperature resistance, leading to high costs and reservoir permeability damage caused by incomplete gel-breaking. In this paper, a supramolecular reinforced gel (SRG) fracturing fluid was constructed by strengthening the supramolecular force between polymers. Compared with single network gel (SNG) fracturing fluid, SRG fracturing fluid could possess high elasticity modulus (G′ = 12.20 Pa) at lower polymer (0.4 wt%) and crosslinker (0.1 wt%) concentrations. The final viscosity of SRG fracturing fluid was 72.35 mPa·s, meeting the temperature resistance requirement of gel fracturing fluid at 200 °C. The gel-breaking time could be extended to 90–120 min using an encapsulated gel breaker. Gel particles are formed after the gel fracturing fluid is broken. The median particle size of gel particles in the SRG-breaking solution was 126 nm, which was much smaller than that in the industrial gel (IDG) breaking fluid (587 nm). The damage of the SRG-breaking solution to the core permeability was much less than the IDG-breaking solution. The permeability damage of cores caused by the SRG-breaking solutions was only about half that of IDG-breaking solutions at 1 mD.https://www.mdpi.com/2310-2861/10/1/2supramolecular reinforced gelgel fracturing fluiddeep reservoirgel-breaking solutionlow permeability damage |
| spellingShingle | Yongping Huang Xinlong Yao Caili Dai Yining Wu Lin Li Bin Yuan A Supramolecular Reinforced Gel Fracturing Fluid with Low Permeability Damage Applied in Deep Reservoir Hydraulic Fracturing Gels supramolecular reinforced gel gel fracturing fluid deep reservoir gel-breaking solution low permeability damage |
| title | A Supramolecular Reinforced Gel Fracturing Fluid with Low Permeability Damage Applied in Deep Reservoir Hydraulic Fracturing |
| title_full | A Supramolecular Reinforced Gel Fracturing Fluid with Low Permeability Damage Applied in Deep Reservoir Hydraulic Fracturing |
| title_fullStr | A Supramolecular Reinforced Gel Fracturing Fluid with Low Permeability Damage Applied in Deep Reservoir Hydraulic Fracturing |
| title_full_unstemmed | A Supramolecular Reinforced Gel Fracturing Fluid with Low Permeability Damage Applied in Deep Reservoir Hydraulic Fracturing |
| title_short | A Supramolecular Reinforced Gel Fracturing Fluid with Low Permeability Damage Applied in Deep Reservoir Hydraulic Fracturing |
| title_sort | supramolecular reinforced gel fracturing fluid with low permeability damage applied in deep reservoir hydraulic fracturing |
| topic | supramolecular reinforced gel gel fracturing fluid deep reservoir gel-breaking solution low permeability damage |
| url | https://www.mdpi.com/2310-2861/10/1/2 |
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