储气库注采井压力全过程评价方法  

Whole-process evaluation of pressure in injection-production well for gas storage

作　　者：曹仁义[1] 阳小平[1,2] 范晶[1] 徐俊杰 江任开 陈岭[1] 

机构地区：[1]中国石油大学(北京),北京102249 [2]中石油北京天然气管道有限公司,北京100101 [3]中海石油深圳分公司研究院,广东广州510240

出　　处：《油气储运》2014年第12期1310-1316,共7页Oil & Gas Storage and Transportation

基　　金：青年科学基金项目"多孔介质中泡沫微观运移机理及数学模型";E040351304220

摘　　要：针对断层封闭储气库注气过程,利用流体力学、渗流力学和气藏工程方法,推导了从注采井井口至井底、井底至近井地带区域以及近井地带至断层3个阶段的压力分布方程,绘制了不同流动和地质参数下的预测图版,为储气库注气过程中从井口到断层全过程的压力跟踪评价提供了理论依据和参考。利用推导的公式,可以根据注气井口或井底压力计算储气库断层处的压力,判断断层压力是否超过设计上限压力,也可以根据断层处最大开启压力,计算注采井合理注气压力界限并评价气库提高库容的可行性。For gas injection process of gas storage sealed by faults, fluid mechanics, seepage mechanics and gas reservoir engineering methods are used to drive the pressure distribution equations for three stages, i.e. from the wellhead to the bottom, from the bottom to the near wellbore zones, and from the near wellbore zones to the fault, of the injectionproduction well, and to prepare the forecast charts under different flow and geological parameters. These equations and charts provide theoretical basis and reference for tracking and evaluating the pressure in the whole process from wellhead to fault in the gas injection process. Using the equations, pressure at gas storage fault can be calculated according to the gas injection wellhead or bottomhole pressure to determine whether the fault pressure exceeds the upper limit of design pressure, or reasonable injection pressure limits of gas injection wells can be calculated and the feasibility to improve the capacity of gas storage is evaluated according to the maximum opening pressure at the fault.

关 键 词：地下储气库 压力评价 井筒 近井地带 断层 

分 类 号：TE822[石油与天然气工程—油气储运工程]