低渗透气藏气井平均地层压力简便计算方法  

A simplified calculation method for average formation pressure of gas well in low-permeability gas reservoir

作　　者：杨玲[1] 文彩霞[2] 董悦[1] 

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]中国石油长庆油田分公司勘探开发研究院,陕西西安710021

出　　处：《西安石油大学学报（自然科学版）》2013年第5期80-82,88,共4页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：陕西省教育厅工业攻关项目"致密砂岩气藏水平井开发产能预测技术"(编号:2012K08-20)

摘　　要：运用数学处理方法,依据气井的Horner方程,提出一种处理气井压力恢复数据、计算供气面积内平均地层压力的简便方法.该方法克服了MBH法需要查图版的缺点,只需通过线性回归分析即可得到平均地层压力.应用实例表明,与MBH法相比,该方法计算结果的相对误差小于0.21%,计算结果可靠.该方法可用于方便、快捷地确定平均地层压力.A simplified calculation method for average formation pressure of gas well in low-permeability gas reservoir is derived based on Horner equation for gas wells. Using this method,average formation pressure of gas well within gas supply area can obtained by processing gas well pressure buildup data. This method overcomes the shortcoming of MBH method needing to check chart and it only needs to use linear regression analysis. A case proves that the relative error between this calculation method and MBH method is less than 0. 21%. The calculating method is simple,fast,reliable,and it is suitable to determining the average formation pressure of the gas wells in low permeability gas reservoirs.

关 键 词：低渗透气藏 平均地层压力 压力恢复曲线 

分 类 号：TE373[石油与天然气工程—油气田开发工程]