榆林气田南区储气库水平井注采能力评价  

Evaluation of Horizontal Well Injection-Production Capacity of Gas Storage in South Yulin Gasfield

作　　者：游良容[1,2] 兰义飞[1,2] 刘志军[1,2] 何磊[1,2] 卞晓燕[1,2] 

机构地区：[1]低渗透油气田勘探开发国家工程实验室 [2]中国石油长庆油田分公司勘探开发研究院

出　　处：《低渗透油气田》2012年第1期91-94,128,共5页

摘　　要：根据国家能源战略需求，计划在榆林气田南区山2气藏建设地下储气库．该气藏为低渗宕性气藏．单井产量较低。由于储气库必须具备战略应急和高峰供气的能力，其气井需“快进快出”，单井生产能力要求较高．水平井是提高单井产能的有效手段，因此榆林南区储气库计划采用水平井建设。但榆林气田南区初期全部采用直井进行开采，目前没有水平井生产动态资料，如何准确评价水平井在榆林气田南区的注采能力确定其注采能力与地层压力的关系曲线．成为储气库建设研究中的重点和难点。充分应用现场动态监测资料，在论证直井注采能力的基础上，利用水平井理论公式产能替换比、数值模拟等方法综合确定了榆林南区水平井注采能力与地层压力的关系曲线．指导了榆林气田南区地下储气库建设方案设计。In accordance with the national energy strategy requirement ,CNPC plans to build gas storages in the Shan2 reservoir of South Yulin gasfield. The reservoir is lithologie gas reservoir with low permeability and low individual well production. Due to the gas storage with the function of the strategy emergency and the gas supply in peak, and its gas well needs ＂quick-in and quick-out＂, in- dividual well capacity must be higher than the common. In the light of horizontal well as an effective means to improve the individual well productivity, South Yulin gas storage is planned to adopt horizontal well for the construction. But, during the initial stage of South Yulin gasfield development, all the wells are vertical. At present there is no production performance information of a horizontal well. The key point and difficulty of the construction of the gas storage are how to accurately evaluate the horizontal well injecting-produc- ing capability, and the curves of relationship between the injecting-producing capability and formation pressure in South Yulin gasfe- lid. Through full application of the data of on-spot dynamic monitoring, on the basis of analyzing the injecting-producing capability of vertical wells, the con＇elation curves between the injecting-producing capability of the horizontal well and formation pressure in South Yulin gasfelid are determined synthetically in this article by using the productivity displacement rate in the theoretical formula of the horizontal well, and numerical simulation and other ways. The result instructs the design of development scheme of gas storage in the South Yulin gasfield.

关 键 词：储气库 直井 注采能力 水平井 替换比 

分 类 号：TE972.2[石油与天然气工程—石油机械设备]