Factors Analysis about Non-resistance Flow of Gas Well Defined by “Spot Measurement”

As the spot measurment is simple and costs low, it is widely used in evaluating the off-take potential of gas well. This paper presents factors influencing the accurary of this measurment, including empirical equation, testing time, downhole uplift pressure. We have analyzed influencing degress of this factors to counting non-resistance flow and propose reasonable ideas and technical limit of the measurement.