补孔措施目标井层优选方法

油井补孔措施就是增加射开新的油层,是保证油井高产、油田持续开发的重要增产措施.而补孔措施效果好坏,主要取决于目标井层的选择是否合适.分析了影响油井补孔措施效果的因素,认为主要包括两方面共7个因素,一方面是井因素,包括全井含水率和全井日产油量共2个因素,另一方面是小层因素,包括小层渗透率、小层孔隙度、小层有效厚度、小层含油饱和度和小层地层压力共5个因素.在此基础上,建立了油井补孔措施目标井层优选方法,该方法以模糊数学为基础,通过综合评判对侯选井层打分,从而优选补孔措施目标井层.实际应用结果表明,利用该方法优选补孔措施目标井层,可靠性高,补孔措施实施后效果好.这种方法具有较高的学术与实用价值.

Optimization Method to Choose Target Zone for Perforation-Adding Treatment

Perforation addition is an important stimulation treatment to guarantee high production of oil well and sustainable development of oilfield.Choice of objective strata is the key problem to perforation addition.This paper determined and analyzed the factors influencing the effect of oil well perforation addition.Altogether seven factors in two types have significant influence on the result of perforation addition.One type is well factors which including water cut and daily oil production of the whole well and another type is the stratum factors which including permeability,porosity,effective thickness,oil saturation and formation pressure of the stratum.Based on this,we developed an optimization method for choosing the objective strata for perforation addition treatment.This method is based on fuzzy mathematics and can,by means of integrated judgment,give a score to every candidate stratum and thus optimize the selection of objective strata for perforation addition treatment.The results of practical applications suggest that the reliability of this method is high,and the effect is perfect.This method has great academic and practical value.