Hydrophobic association supramolecular gel suitable for oil and gas drilling in fractured formation
Supramolecular gel can be used to seal fractures and pores in the formation during oil and gas drilling and production. In this study, a supramolecular gel plugging agent based on hydrophobic association was prepared by free radical polymerization of acrylamide, octadecyl methacrylate, sodium dodecy...
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| Language: | English |
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Frontiers Media S.A.
2024-11-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2024.1468766/full |
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| author | Yongquan Han Zhixue Yu Zijun Guan Rui Ma Yuzhou Hu |
| author_facet | Yongquan Han Zhixue Yu Zijun Guan Rui Ma Yuzhou Hu |
| author_sort | Yongquan Han |
| collection | DOAJ |
| description | Supramolecular gel can be used to seal fractures and pores in the formation during oil and gas drilling and production. In this study, a supramolecular gel plugging agent based on hydrophobic association was prepared by free radical polymerization of acrylamide, octadecyl methacrylate, sodium dodecyl sulfate and other monomers by micellar copolymerization. The forming time, rheology, swelling, mechanical properties and plugging properties of supramolecular gels were studied. The experimental results show that the formation time of supramolecular gel plugging agent is controllable, and it has excellent viscoelastic recovery ability in a certain range of shear strain and scanning frequency. When the compression amount is close to 88.3%, the compressive stress reaches 3.82 MPa. Meanwhile, the swelling performance of supramolecular gel was good, and the equilibrium swelling degree reached 22.1% after 188 min swelling in 15% NaCl brine solution. In 1% NaCl solution, the equilibrium swelling degree of supramolecular gel reached 32.5%. In addition, supramolecular gel has strong formation bonding ability, good plugging performance, plugging rate is greater than 95%, can effectively reduce the leakage and improve the plugging effect of low permeability layer. It is of reference and guiding significance for the long-term plugging of heterogeneous and malignant leakage formations. |
| format | Article |
| id | doaj-art-c16e085df88d43c795345c9eb5c65489 |
| institution | Kabale University |
| issn | 2296-2646 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj-art-c16e085df88d43c795345c9eb5c654892024-11-26T04:25:50ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462024-11-011210.3389/fchem.2024.14687661468766Hydrophobic association supramolecular gel suitable for oil and gas drilling in fractured formationYongquan Han0Zhixue Yu1Zijun Guan2Rui Ma3Yuzhou Hu4The Ninth Oil Extraction Plant of Changqing Oilfield Company, Xi’an, ChinaThe Ninth Oil Extraction Plant of Changqing Oilfield Company, Xi’an, ChinaPetrochina Liaohe Oil Production Technology Research Institute, Liaoning, ChinaThe Ninth Oil Extraction Plant of Changqing Oilfield Company, Xi’an, ChinaThe Ninth Oil Extraction Plant of Changqing Oilfield Company, Xi’an, ChinaSupramolecular gel can be used to seal fractures and pores in the formation during oil and gas drilling and production. In this study, a supramolecular gel plugging agent based on hydrophobic association was prepared by free radical polymerization of acrylamide, octadecyl methacrylate, sodium dodecyl sulfate and other monomers by micellar copolymerization. The forming time, rheology, swelling, mechanical properties and plugging properties of supramolecular gels were studied. The experimental results show that the formation time of supramolecular gel plugging agent is controllable, and it has excellent viscoelastic recovery ability in a certain range of shear strain and scanning frequency. When the compression amount is close to 88.3%, the compressive stress reaches 3.82 MPa. Meanwhile, the swelling performance of supramolecular gel was good, and the equilibrium swelling degree reached 22.1% after 188 min swelling in 15% NaCl brine solution. In 1% NaCl solution, the equilibrium swelling degree of supramolecular gel reached 32.5%. In addition, supramolecular gel has strong formation bonding ability, good plugging performance, plugging rate is greater than 95%, can effectively reduce the leakage and improve the plugging effect of low permeability layer. It is of reference and guiding significance for the long-term plugging of heterogeneous and malignant leakage formations.https://www.frontiersin.org/articles/10.3389/fchem.2024.1468766/fullsupramolecular gelsoil and gas drillingviscoelastic propertiesswelling propertiesplugging performance |
| spellingShingle | Yongquan Han Zhixue Yu Zijun Guan Rui Ma Yuzhou Hu Hydrophobic association supramolecular gel suitable for oil and gas drilling in fractured formation Frontiers in Chemistry supramolecular gels oil and gas drilling viscoelastic properties swelling properties plugging performance |
| title | Hydrophobic association supramolecular gel suitable for oil and gas drilling in fractured formation |
| title_full | Hydrophobic association supramolecular gel suitable for oil and gas drilling in fractured formation |
| title_fullStr | Hydrophobic association supramolecular gel suitable for oil and gas drilling in fractured formation |
| title_full_unstemmed | Hydrophobic association supramolecular gel suitable for oil and gas drilling in fractured formation |
| title_short | Hydrophobic association supramolecular gel suitable for oil and gas drilling in fractured formation |
| title_sort | hydrophobic association supramolecular gel suitable for oil and gas drilling in fractured formation |
| topic | supramolecular gels oil and gas drilling viscoelastic properties swelling properties plugging performance |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2024.1468766/full |
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