1results about How to "Reduce stress difference" patented technology

This application provides a method, apparatus, medium, and program product for multi-round fracturing in deep coal reservoirs. It relates to the field of deep coal reservoir stimulation technology. Each round of multi-round fracturing includes hydraulic fracturing and well shut-in. A simulated fracturing scheme for the nth round corresponding to the target deep coal reservoir is obtained. If n is 2, the fracturing fluid system in the simulated fracturing scheme is a variable viscosity slickwater fracturing fluid system; if n is not 2, the fracturing fluid system in the simulated fracturing scheme is a low-concentration guar gum fracturing fluid system. Based on the real-time wellhead pressure, real-time microseismic information obtained in the (n-1)th round, and the fracture network morphology after well shut-in in the (n-1)th round, an unconventional fracture propagation model is used to predict the fracture network morphology corresponding to hydraulic fracturing in the nth round, according to the simulated fracturing scheme of the nth round. Based on the fracture network morphology, real-time wellhead pressure, and real-time microseismic information corresponding to hydraulic fracturing in the nth round, the well shut-in time for the nth round is determined. This aims to achieve balanced stimulation of deep coal reservoirs and improve EUR (Earnings Equivalent to Fluid Regulator).