【摘要】 在前人已作的对砾石充填井压降分析的基础上 ,提出了新的计算公式来计算射孔 -砾石充填井的压降 ,再通过引入普通径向流方程求解表皮系数。通过给出的实例计算 ,体现了孔深、孔径、孔密等不同射孔参数和地层参数对表皮系数的影响 ,验证了此方法的正确性与可靠性 ,从而提供了一种简捷而有效的计算射孔 -砾石充填井表皮系数的方法 ,同时对准确认识地层、评价油层伤害、优化油气井的增产措施提供了有益的指导。更多还原

【Abstract】 Skin factor is one of the most important factors in the exploration and development of oil field.It can be obtained by instable well test.However,it is usually analyzed with plate approach and semi-analysis method.Based on what have been done in the aspect of pressure drop across gravel pack,this paper have come up with a new formula to predict the pressure drop across gravel pack,then to calculate the skin factor through the equation of radial flow.Through the example given by this paper,it has shown the influence of different perforating parameters as well as formation parameters on the skin factor,which has verified the validity and reliability of the method givend by this paper.Therefore,this paper has given a valid and useful method to calculate the skin factor.更多还原