Self-healing hydrogels and their action mechanism in oil–gas drilling and development engineering: A systematic review and prospect

Research progress and development tendency of polymer drilling fluid technology for unconventional gas drilling

“…As seen from the development process of the petroleum industry, four technology revolutions in 1920~1930s, 1960~1970s, 1980~1990s, and in the beginning of the 21st century all sharply increased oil and gas production in the world. In the near future, under the background of a surprising development and application of big data and artificial intelligence, the fifth revolution centering on "intelligence" may occur very possibly (Fatai, 2011;Abdelgawad et al, 2018;Nunoo, 2018;Bai et al, 2021;Lei et al, 2022a;Zhao et al, 2022). As an indispensable component of intelligent drilling, the intelligent drilling fluid is bound to become a promising technology development trend.…”

Strengthening the Hydrogel for Lost Circulation Control through In Situ Self-Assembled Nanocomposite Networks

“…As a result, hydrogels have strong autonomous adaptability for blocking pores and fractures at different scales developed in the formation. 10,11 Among numerous hydrogel systems, the hydrogels comprising acrylamide-based polymers and polyethyleneimine (PEI) have attracted considerable attention as plugging agents in the petroleum industry due to their economic feasibility, low toxicity, high cross-linking activity, and superior temperature resistance compared to other acrylamide-based polymer hydrogels. 12−14 Hashmat et al 15 studied the potential of the polymer gel system consisting of partially hydrolyzed polyacrylamide (HPAM) and polyethyleneimine (PEI) as a loss control agent.…”

“…Hydrogels are formed by cross-linked polymer chains with a large amount of water trapped inside the network structure. , Compared to particulate LCMs, hydrogels possess remarkable flexibility. As a result, hydrogels have strong autonomous adaptability for blocking pores and fractures at different scales developed in the formation. , Among numerous hydrogel systems, the hydrogels comprising acrylamide-based polymers and polyethyleneimine (PEI) have attracted considerable attention as plugging agents in the petroleum industry due to their economic feasibility, low toxicity, high cross-linking activity, and superior temperature resistance compared to other acrylamide-based polymer hydrogels. − Hashmat et al studied the potential of the polymer gel system consisting of partially hydrolyzed polyacrylamide (HPAM) and polyethyleneimine (PEI) as a loss control agent. It was shown that the polymer gel was able to successfully prevent mud loss in a zone having 36% porosity and 300 D permeability at room temperature and moderately high-pressure conditions.…”

Establishment of different aliphatic amines-based rapid self-healing Mg(OH)2 metallogels: exploring the morphology, rheology and intriguing semiconducting Schottky diode characteristics

“…The self-healing property is extremely useful for tissue engineering, 3 transportation of bio-stuffs, 4 and synthetic molecular muscles. 5 Powered by these, research with the high-end technical prospect of soft-scaffolds, applicable to the oil industry, 6 sensing purposes, 7 electro-optics and photonics, [8][9][10][11][12] makeup materials, 13 catalysis, 14 drug carriage, 15 and biomedical uses, 16 began its journey decades ago. Metal-ion-directed soft-matter like metallogels attracts special attention due to its functional versatility in terms of magnetism, 17 electronic features including semiconducting behaviour, [18][19][20][21][22][23][24] redox properties, 25 sensing applications, 26 catalysis, 27 energy materials, 28 nonlinear optical performance, 29 separation, 30 etc.…”