废弃油基钻井液破乳剂的研制及应用  

Development and Application of Demulsifier in Waste Oil-Based Drilling Fluid

作　　者：马雅雅[1] 王中华[1] 何焕杰[1] 张鑫[1] 单海霞[1] 

机构地区：[1]中国石化中原石油工程有限公司钻井工程技术研究院,河南濮阳457001

出　　处：《油田化学》2015年第1期128-131,共4页Oilfield Chemistry

基　　金：中国石油化工集团公司重点科技项目"页岩气钻井油基钻屑和废液处理技术研究"(项目编号JP12006)

摘　　要：化学破乳法是处理废弃油基钻井液比较理想的方法,但需要专用破乳剂,因此限制了其在现场的推广应用。为此,本文以某气田角51井废弃油基钻井液为研究对象,采用"破乳-絮凝-分离"的处理工艺,研制了一种废弃油基钻井液专用破乳剂ZYFYP,该破乳剂由AE8051、BP-169、AP-05和OP-10组成。当AE8051、BP-169、AP-05、OP-10质量比为3:2:1:3且加量为0.8%、絮凝剂PAM加量为0.2%、表面活性剂OT-75加量为1.2%,助洗剂Na5P3O10加量为10%、废弃油基钻井液温度为15℃~50℃时,在转速3500 r/min下离心分离5 min后,油回收率为98.6%。ZYFYP适合不同密度废弃油基钻井液油的回收处理,处理过程不需要加热,对设备要求不高,成本较低,对不同密度废弃油基钻井液油回收率大于96%。Chemical demulsification method is effective for treating waste oil base drilling fluid,but the lack of special demulsifier has limited its application in the field. In this paper,a special waste oil-based drilling fluid demulsifier,named as ZYFYP,which consistd of AE8051,BP-169,AP-05 and OP-10,had been developed. The effect of ZYFYP in treating waste oil-based drilling fluid of Jiao-51 Well was remarkable during demulsification-flocculation-separation treatment process. Under the condition of ZYFYP amount of 0.8%(mass ratio of AE8051,BP-169,AP-05,OP-10 of 3:2:1:3),flocculant agent PAM amount of 0.2%,surfactant OT-15 amount of 1.2%,dispersant Na5P3O10 amount of 10%,the oil recovery rate was 98.6% after centrifuge separation for 5 minitues at the speed of 3500 r/min and at the temperature of 15—50℃. ZYFYP was suitable for treating different density waste oil-based drilling fluid in solid-liquid separation process. Heating process was not needed,equipment requirement was not high and the cost was low,the oil recovery rate from waste oil-based drilling fluid was greater than 96%.

关 键 词：废弃油基钻井液 破乳剂 油回收率 表面活性剂 固液分离 

分 类 号：X741[环境科学与工程—环境工程]