The invention relates to the technical field of
coal mining, and provides an oil and gas well
instability analysis method and
system during
coal and oil simultaneous mining. In the method, for an oil-gas well under a non-mining condition, when an actual weak plane inclination angle beta of a rock stratum of the oil-gas well is greater than a critical weak plane inclination angle of the rock stratum of the oil-gas well, a limit
horizontal stress sigma 1, sigma 2, sigma 3, sigma 4, sigma 5, sigma 6, sigma 7, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8, sigma 8 comparing with the actually measured
horizontal stress sigma '1 in the rock stratum of the oil-gas well, and judging the
instability of the oil-gas well according to the comparison result; and for an oil and gas well under the mining condition, the stability of the oil and gas well is evaluated according to the constructed oil and gas well
instability judgment model under the mining condition, so that the stability of the gas well is evaluated by analyzing the influence of weak plane cohesion on mechanical behaviors of a rock stratum under the biaxial and triaxial
stress conditions. And guidance is provided for oil-gas well stability prediction and evaluation and oil-gas
well drilling design under the condition of simultaneous production of
kerosene and oil.