甘谷驿油田注入水结垢情况分析及解决办法  

Analysis on Injected Water Scaling in Ganguyi Oil Field and its Solution

作　　者：胡文庭[1] 师亚栋 李关虎[1] 侯明明[1] 范虎[1] 

机构地区：[1]长江大学石油工程学院油气钻采工程湖北省重点实验室,湖北荆州434023 [2]延长油田股份有限公司甘谷驿采油厂,陕西延安716005

出　　处：《天然气与石油》2011年第3期64-66,82,共4页Natural Gas and Oil

基　　金：延长油田股份有限公司"甘谷驿油田注水开发项目"资助(90014)

摘　　要：甘谷驿油田的注水管网中发现有结垢物存在,通过结垢趋势预测和分析甘谷驿油田注入水中成垢离子的变化率,确定油田注入水存在结垢倾向。经对结垢物的分析,确定其为碳酸钙垢。针对甘谷驿油田的结垢情况,在实验室内对一些阻垢剂进行了筛选,比较相同实验条件下各种阻垢剂的阻垢率,筛选出POCA为最佳阻垢剂,并测试了pH值和温度对POCA阻垢效果的影响,结果表明POCA的阻垢效果很好。现场实践也证明:在油田注入水中加入POCA两个月之后,注水管网中没有新的结垢物生成并且原先的结垢物也消失了,阻垢效果非常明显。It is found that there is scale in water injection pipelines of Ganguyi Oil Field. Predicted and analyzed is the change rate of scaling ions in water injected into pipelines according to the scaling tendency and confirmed is the scaling tendency further. Results from analysis on the scaling things show that scaling things are calcium carbonate scales. Selected are some scale inhibitors in laboratory according to such scaling situations, comparatively analyzed are anti-scaling rates of different scale inhibitors in same experimental conditions, selected further is the optimum scale inhibitor of POCA and test are the effects of pH value and temperature on scale inhibition effects of POCA. The results show that POCA can inhibit scaling obviously and the practices at site show also that there is no new scales appearing in water injected into pipelines after two months of POCA injection, previous scales disappear also and the scale inhibition effect is very obvious.

关 键 词：甘谷驿油田 POCA 碳酸钙垢 成垢离子 阻垢效果 

分 类 号：P618.13[天文地球—矿床学]