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In gas horizontal drilling, the gas with cuttings will go through the annulus   at high speed which will lead strong erosion to the drill tools. This paper   proposes a cuttings-carried theory and modified the critical cuttings-carried   model for the gas-solid flow. Meanwhile, the erosive energy is obtained   through simulating the gas-solid mixture in different conditions. The study   result has positive significance on the determination of reasonable injection   volume by optimizing construction parameters of horizontal well in gas   drilling

Cuttings-carried theory and erosion rule in gas drilling horizontal well