Drilling solid waste was produced in construction period of gas well, and in cluded waste mud, rock cuttings, weighting materials, and so on. Waste mud of the drilling field was nearly between 800~1200 m
per well, rock cuttings were about 1000 m
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per well. In period of drilling, weighting materials may be used when necessary. If emergency probability was 1% and waste yield was 500 m
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per well, weighting materials was 5 m
per well. Apparently, waste mud and rock cuttings were the main drilling solid waste.
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