Preparation of a Nanomaterial–Polymer Dynamic Cross-Linked Gel Composite and Its Application in Drilling Fluids Article Swipe
Fei Gao
,
Peng Xu
,
Hui Zhang
,
Hao Wang
,
Xin Zhao
,
Xinru Li
,
Jiayi Zhang
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3390/gels11080614
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3390/gels11080614
During the process of oil and gas drilling, due to the existence of pores or micro-cracks, drilling fluid is prone to invade the formation. Under the action of hydration expansion of clay in the formation and liquid pressure, wellbore instability occurs. In order to reduce the wellbore instability caused by drilling fluid intrusion into the formation, this study proposed a method of forming a dynamic hydrogen bond cross-linked network weak gel structure with modified nano-silica and P(AM-AAC). The plugging performance of the drilling fluid and the performance of inhibiting the hydration of shale were evaluated through various experimental methods. The results show that the gel composite system (GCS) effectively optimizes the plugging performance of drilling fluid. The 1% GCS can reduce the linear expansion rate of cuttings to 14.8% and increase the recovery rate of cuttings to 96.7%, and its hydration inhibition effect is better than that of KCl and polyamines. The dynamic cross-linked network structure can significantly increase the viscosity of drilling fluid. Meanwhile, by taking advantage of the liquid-phase viscosity effect and the physical blocking effect, the loss of drilling fluid can be significantly reduced. Mechanism studies conducted using zeta potential measurement, SEM analysis, contact angle measurement and capillary force assessment have shown that modified nano-silica stabilizes the wellbore by physically blocking the nano-pores of shale and changing the wettability of the shale surface from hydrophilic to hydrophobic when the contact angle exceeds 60°, thereby reducing capillary force and surface free energy. Meanwhile, the dynamic cross-linked network can reduce the seepage of free water into the formation, thereby significantly lowering the fluid loss of the drilling fluid. This research provides new insights into improving the stability of the wellbore in drilling fluids.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/gels11080614
- https://www.mdpi.com/2310-2861/11/8/614/pdf?version=1754387868
- OA Status
- gold
- References
- 29
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4412957958
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4412957958Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/gels11080614Digital Object Identifier
- Title
-
Preparation of a Nanomaterial–Polymer Dynamic Cross-Linked Gel Composite and Its Application in Drilling FluidsWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2025Year of publication
- Publication date
-
2025-08-05Full publication date if available
- Authors
-
Fei Gao, Peng Xu, Hui Zhang, Hao Wang, Xin Zhao, Xinru Li, Jiayi ZhangList of authors in order
- Landing page
-
https://doi.org/10.3390/gels11080614Publisher landing page
- PDF URL
-
https://www.mdpi.com/2310-2861/11/8/614/pdf?version=1754387868Direct link to full text PDF
- Open access
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YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
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https://www.mdpi.com/2310-2861/11/8/614/pdf?version=1754387868Direct OA link when available
- Concepts
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Drilling fluid, Wetting, Contact angle, Capillary action, Materials science, Viscosity, Oil shale, Drilling, Composite material, Petroleum engineering, Rheology, Composite number, Chemical engineering, Geology, Metallurgy, Paleontology, EngineeringTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
- References (count)
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29Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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