Basic Research Of Gas Desorption Index Of Drill Cuttings (Δh₂) Measurement Technology

Taking No.3 coal seam of Duanshi coal mine of Qinhe Energy Group Co., Ltd. for example, the paper combined laboratory simulation and theoretical analysis to test gas desorption index of drill cuttings (â–³h₂) of coal samples with different weights under different adsorption equilibrium pressures.verified the relationship of gas adsorption equilibrium pressure and gas desorption index of drill cuttings (â–³h₂) which.had been obtained in the eights five-year plan. The paper also researched the law of relationship between the weight of the coal and gas desorption index of drill cuttings (â–³h₂) and established the relational formula between a gas desorption index of drill cuttings (â–³h₂) relationship and sample weight.The article tested gas desorption index of drill cuttings (â–³h₂) of coal samples with different weight under the condition with gangue and residuary braise,curve fitting the results with origin software program,with the fitting results, measured the absolute error from gangue and residuary braise,to obtain the lower limit of the reasonable range of coal samples weight. According to the amount of drill cuttings 1 3mm in the proportion of coal particle size, considered the cuttings in the drilling of the transport time, and several other constraints, We have identified a measured gas desorption indicators cuttings reasonable limits on the weight of coal; then came to a reasonable range of weight of coal;We could determine the value of weight of coal samples, designed the new gas desorption index of drillings measuring device, and in the field application, we tested the device is reasonable.