Fiber silica composite microsphere for shale stratum, drilling fluid and preparation method and use thereof
AssigneeSouthwest Petroleum University
InventorsYang Bai, Lingfeng Wu, Pingya Luo, Wenzhe Li, Feng Dai, Gang Xie, Haibo Liang, Kesheng Rong, Jiading Deng
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Abstract
A fiber silica composite microsphere for a shale stratum comprises a hollow silica sphere and fibers, and the fibers are partially coated on an outer surface of the hollow silica sphere and partially embedded into an interior of the hollow silica sphere. The hollow silica sphere has an outer diameter of 1-5 μm and an inner diameter of 0.8-4.7 μm; the fibers have a length of 5-10 μm and a width of 1-3 μm.
Claims9
A fiber silica composite microsphere for a shale stratum comprising a hollow silica sphere and fibers, wherein the fibers are partially coated on an outer surface of the hollow silica sphere and partially embedded into an interior of the hollow silica sphere, wherein the hollow silica sphere has an inner diameter of 0.8-4.7 μm and an outer diameter of 1-5 μm;
- the fibers have a length of 5-10 μm and a width of 1-3 μm.
Dependencies are inferred from the claim text.