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• W4313391804 endingPage "34" @default.
• W4313391804 startingPage "34" @default.
• W4313391804 abstract "With the development of oil exploration, the number of complex situations encountered in the drilling process is continuously increasing. During the operation of large displacement and horizontal wells, the safe density window of drilling fluid is narrow in complex formations and the lost circulation problem is becoming increasingly prominent. This can easily cause the drilling fluid to enter the formation from inside the well through lost circulation channels, which will prolong the drilling cycle, increase drilling costs, affect geological logging, and could cause a series of malignant accidents (such as blowout, sticking of a drilling tool, borehole collapse, and well abandoned). According to the severity, common lost circulation can be classified into three types: fractured lost circulation, karst cave lost circulation, and permeability lost circulation. Currently, researchers are developing different types of lost circulation materials (LCMs) for various lost circulation situations. Compared with conventional lost circulation control methods, the polymer gel lost circulation control technique applies a three-dimensional cage-like viscoelastic body formed via the crosslinking reaction of polymer gels. These materials have strong deformability and can enter fractures and holes through extrusion and deformation without being restricted by lost circulation channels. They then settle in the lost circulation formation and form a plugging layer through a curing reaction or swelling effect. Among the polymer gel LCMs, high-temperature resistant polymer gels can either be used alone or in combination with other LCMs, bringing the advantages of adjustable gelation time, strong lost circulation control ability, and strong filtration ability of the plugging slurry. Moreover, they are suitable for the lost circulation control of microporous leaky layer and have limited influence on the performance of drilling fluids. Therefore, the high-temperature resistant polymer gel lost circulation control technique is increasingly becoming a hot spot in the research of LCMs nowadays. This paper summarizes the research progress into high-temperature resistant functional gels for profile control and water shutoff, lost circulation prevention and control, and hydraulic fracturing. Furthermore, the current application status of high-temperature resistant gels and high-temperature resistant gel temporary plugging agents is demonstrated, followed by a detailed overview of the gel-breaking methods. Overall, this research lays the theoretical foundation for the application and promotion of high-temperature resistant gels." @default.
• W4313391804 created "2023-01-06" @default.
• W4313391804 creator A5006068471 @default.
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• W4313391804 creator A5025095617 @default.
• W4313391804 creator A5064564309 @default.
• W4313391804 creator A5076988030 @default.
• W4313391804 date "2022-12-30" @default.
• W4313391804 modified "2023-10-18" @default.
• W4313391804 title "Research Progress of High-Temperature Resistant Functional Gel Materials and Their Application in Oil and Gas Drilling" @default.
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• W4313391804 doi "https://doi.org/10.3390/gels9010034" @default.
• W4313391804 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36661801" @default.
• W4313391804 hasPublicationYear "2022" @default.
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