Exploration of borehole unit surge conversion based on well loss
Unit water influx is one of the core indicators for evaluating the water richness of a formation,and the conven-tional conversion of unit water influx in boreholes does not take into account the effect of well loss.In this in the borehole unit drop depth of water influx conversion method is described,on this basis,well loss-based unit influx conversion method is proposed,and example applications are analyzed.The results are considered:When the pumping volume Q or the drop depth S is large,the effect of well loss on the unit surge rate of the borehole is huge.When the Q-S curve is straight or nearly straight,the well loss is usually negligible and no well loss conversion can be performed;The greater the curvature of the Q-S curve,the more serious the deformation of the Q-S curve,and the greater the influence of well loss,it is necessary to carry out the well loss based on the well loss of the unit depth of water influx conversion,in order to more objectively and accurately evaluate the water richness of the formation.
borehole unit surgewell damageQ-S equationwell diameter conversion
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