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AssigneesChina Petroleum & Chemical Corporation, Sinopec Petroleum Engineering Technology Research Institute Co., Ltd.
InventorsShiming ZHOU, Peiqing LU, Rengguang LIU, Kui LIU, Lishuang WANG, Xiaoyu DU, Jinlong DU, Xiaojiang LI
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An oil-gas well, a well cementation method, and a cement composition are provided. The oil-gas well has a well body, a sleeve disposed in the well body, and a cement slurry cured product disposed between the well body and the sleeve. Due to the strength and toughness of the cement slurry cured product, at least part of the sleeve is a non-metal sleeve. By selecting specific cement, the cured product of cement has excellent mechanical strength and toughness, and is mated with the non-metal sleeve to achieve well cementation.
An oil-gas well comprising a well body, a sleeve disposed in the well body, and a cement slurry cured product arranged between the well body and the sleeve, wherein at least part of the sleeve is a non-metal sleeve due to the strength and toughness of the cement slurry cured product;
2-36. (canceled)
A method of cementing a well comprising the steps of placing sleeve into a well, filling a cement slurry into a space between borehole wall and the sleeve and curing the cement slurry, wherein at least part of the sleeve is a non-metal sleeve due to the strength and toughness of cured product obtained after curing the cement slurry;
A cement composition, wherein the cement composition has a resistivity of 10-100 Ω·m.
Dependencies are inferred from the claim text.