Analysis of influencing factors of hydraulic fracturing shape in deep coalbed methane wells in Linxing block

The development potential of deep-coaled methane is huge, and in recent years, China has conducted development tests in Ordos Basin, Qingshui Basin, and other areas, and made many new progresses and breakthroughs, but no systematic theories and technologies have yet been formed for the hydraulic fracturing shape formed by deep coaled methane fracturing process. The characteristics of deep-coaled methane are significantly different from those of conventional coaled methane, with the natural fractures in coal rock, the complex hydraulic fracturing networks, and the variation of horizontal stress. Aiming at this problem, software was used to simulate the sensitivity analysis of the effect of hydraulic fracturing construction parameters on hydraulic fracturing shape for deep coalbed methane in the Linxing block. The calculation results show that: the construction displacement and sand ratio have a more limited effect on the hydraulic fracturing shape of deep coaled methane wells, the total fluid volume can significantly increase the length and the width of hydraulic fracturing networks, the increase of horizontal stress difference means that the rock along the direction of the minimum stress is easier to be fractured, and the length of the hydraulic fracturing network is increased, and the width of the hydraulic fracturing network is decreased.