利用测井资料判断地层出水的方法  

Formation Water Production Prediction Based on Well Logging Data

作　　者：蒋宏伟 周英操 崔猛[1,2] 翟应虎[2] 王克雄[2] 赵庆 

机构地区：[1]中国石油钻井工程技术研究院,北京100195 [2]中国石油大学(北京)石油天然气工程学院,北京昌平102249

出　　处：《石油钻探技术》2010年第2期28-32,共5页Petroleum Drilling Techniques

摘　　要：空气钻井技术具有大幅度提高机械钻速、缩短钻井周期等优点,但空气钻井技术的主要障碍之一是地层出水。单一的测井资料解释方法不易准确地识别出水地层,因此建立和应用新的地层出水识别方法是非常必要的。利用声波时差测井和双侧向电阻率测井资料,建立了判断出水层位的新方法———声电综合法。该方法判断出水地层的标准有3条:1)由地层的声波时差转化得到的视电阻率与深侧向电阻率的比值大于1;2)地层的深侧向电阻率小于100Ω.m;3)地层的双侧向电阻率差一般为零或负幅度差。若某一地层同时满足上述3条标准,即为出水层。该方法经现场应用验证正确可靠,对空气钻井的推广应用具有重要意义。Air drilling can improve penetration rate and reduce well drilling period,while the primary challenge of air drilling is formation water production.It is difficult to identify formations water production using single well logging data.Therefore,it is necessary to develop a method to identify formation water production.The acoustoelectric method which uses wave slowness and dual laterolog（DLL） resistivity logging data to identify formation water production was developed.There are 3 criteria to determine formation water production,1） the ratio between apparent electrical resistivity transformed from wave slowness and deep laterolog（LLD） electrical resistivity is higher than 1.0,2） the electrical resistivity from LLD is less than100 Ω·m,3） the difference between DLL is zero or negative.The formation is a water formation if it meets the above three criteria.The field application shows that this method is reliable.It is very important for the application of air drilling.

关 键 词：气体钻井 测井数据 出水层 声波速度 电阻率测井 民参1井 

分 类 号：TE242.6[石油与天然气工程—油气井工程]