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- W2319328852 abstract "This paper proposes a novel approach to achieve self-healing property of cement sheath in the oil well triggered by oil leakage through cracks. An oil swellable polymer (OSP) with oil absorptivity as high as 700% was synthesized through emulsion polymerization. The OSP dispersion was added into the Portland cement paste. It is found that the oil absorption and the linear expansion of the OSP modified hardened cement paste (MHCP) are greatly increased compared to the blank hardened cement paste (BHCP). Pore structure measurements by N2 adsorption show that the addition of OSP decreases the total porosity of MHCP which confirms that the formation of the polymeric film in MHCP. The self-healing ability of MHCP was evaluated by the oil flow test through a single crack in the cylindrical specimen. The oil flow tests indicate that the leakage of oil through the crack is gradually mitigated due to the expansion of the MHCP and thus the self-healing ability is successfully achieved." @default.
- W2319328852 created "2016-06-24" @default.
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- W2319328852 date "2016-07-01" @default.
- W2319328852 modified "2023-09-27" @default.
- W2319328852 title "Oil swellable polymer modified cement paste: Expansion and crack healing upon oil absorption" @default.
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- W2319328852 doi "https://doi.org/10.1016/j.conbuildmat.2016.03.163" @default.
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