试油过程中取水样的时机选择  

Selecting Time for Water Sample During Oil Testing Process

作　　者：张振中[1] 白文剑[1] 鹿成亮[1] 吕万一[1] 任月玲[2] 

机构地区：[1]华北石油管理局油气井测试公司,河北廊坊065007 [2]华北油田分公司开发部,河北任丘062252

出　　处：《油气井测试》2007年第3期64-65,共2页Well Testing

摘　　要：至2005年底,冀中坳陷大部分地区在进行试油时所取得的可靠、有代表性的水分析资料有328个,仅占全部水分析资料的26.67%。水样的可利用率极低,原因在于试油时取水样的时机不当,使水样多半受到泥浆水不同程度的污染。用石蕊试纸随试油抽水过程测定水样的pH值,当pH值由大变小至小于7.5时,泥浆污染消除,取得合格水样。该方法比以往的硝酸银滴定水样的Cl-法设备更简单,成本更低,资料更真实。To the end of 2005, the number of all reliable and representative water analysis data in many areas of Jizhong sag is 328, to be 26.67% of all the water analysis data. The low utilized ratio is because of sampling time when water sample is polluted by mud fluid at different content. Using lacmus test at pumping water process to measure pH value of water sample, an acceptable water sample is acquired for mud pollution eliminated when pH value changing from big to small so that to be smaller than 7.5. Compared by former way of titrating water by lunar caustic to get pH, the equipment for this method is simple, cost is low and data is true.

关 键 词：试油 钻井液污染 取样时机 水样 PH值 

分 类 号：TE353[石油与天然气工程—油气田开发工程]