摘要
准确的动储量计算值对气田的开发具有重要意义。但在气田开发中后期,气井井间干扰普遍存在,传统压降法在计算气井动储量时仅把单井压力测试资料及因其他原因关井时间较长的压力资料作为依据,导致计算结果出现很大偏差。为解决这一难题,首先引入压降跟踪曲线,把单井生产资料应用到压降曲线绘制过程中,降低了存在井间干扰气井组单井传统压降法动储量计算误差,然后对传统压降法进行改进,采用以井间干扰的气井组为计算对象的整体压降法计算整个井组的动储量,大大提高动储量计算的准确性。选取鄂尔多斯盆地靖边气田山2储层的两口气井对文章提出的方法进行验证,证实了方法的可行性及可靠性。
Accurate calculation of dynamic reserves is important for gas field development.The traditional pressure-drop method only based on the pressure test data has fewer reference points which can cause the calculation results inaccurate.In this paper,the well production data is applied to draw the pressure drop curve.Pressure tracking curve can be used to solve the inaccuracy of the traditional method.In order to eliminate the well interference effect,entire well group is taken as one well to calculate the dynamic reserves by integral pressure-drop method.The conclusion has been approved by the dynamic reserves calculation results of two wells in Shan2 reservoirs,which verifies the validity and reliability of the method.
出处
《天然气与石油》
2016年第6期51-54,共4页
Natural Gas and Oil
关键词
井间干扰
气井动储量
压降法
压降跟踪曲线
Interwell interference
Dynamic reserves
Pressure drop method
Pressure drop tracking curve
