陈堡油田回注污水CaCO_3结垢预测及实测  

PREDICTION AND DETERMINATION OF CaCO_3 SCALING TENDENCY IN PRODUCED WATER FOR INJECTION AT CHENBAO OIL FIELD

作　　者：徐卫华[1] 俞力[1] 袁萍[1] 朱一星[1] 

机构地区：[1]江苏石油勘探局工程院,江苏江都225261

出　　处：《油田化学》1999年第4期326-328,共3页Oilfield Chemistry

摘　　要：应用Ｄａｖｉｓ 和Ｓｔｉｆｆ 等预测ＣａＣＯ３ 结垢趋势和结垢严重程度的公式以及带压力注水系统中ｐＨ 值计算方法，对陈堡油田陈２ 、陈３ 块混合污水进行了ＣａＣＯ３ 结垢理论预测，通过库尔特粒径分析证实了理论预测结果。The tendency to scaling of CaCO 3 in mixed produced water of Blocks Chenbao 2 and 3 is predicted by using Still Davis' stabilization index SI , Oddo Tomson's equation for downhole pH value, and Valone Skillern's criterium PTB . Both single produced waters of Blocks Chenbao 2 and 3 are not scaling at surface and downhole. Their mixture(1∶1 in volume) is scaling slightly at surface (50℃): SI =0.221, TPB =13.46; is scaling seriously downhole (80℃): SI =0.598, PTB =131.2. This prediction is verified by determinations of particle size and amount in single and mixed water samples.

关 键 词：结垢 回注污水 油田注水 碳酸钙 注入水 

分 类 号：TE357.61[石油与天然气工程—油气田开发工程]