废弃水基钻井泥浆的固液分离研究——以四川蓬深X井为例  

Study on solid-liquid separation of waste water-based drilling mud——a case study on X well in Pengshen,Sichuan province

作　　者：湛峰 程全 刘慧敏 宋光明 诸林[3] 孙勇 赵志越 ZHAN Feng;CHENG Quan;LIU Huimin;SONG Guangming;ZHU Lin;SUN Yong;ZHAO Zhiyue(Chengdu Dayou Petroleum Drilling and Production Engineering Co.,Ltd.,Chengdu,Sichuan,610051,China;CNPC Chuanqing Drilling Engineering Company Limited West Sichuan Drilling Company,Chengdu,Sichuan,610051,China;School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu,Sichuan,610500,China)

机构地区：[1]成都大有石油钻采工程有限公司,四川成都610051 [2]中国石油川庆钻探工程有限公司川西钻探公司,四川成都610051 [3]西南石油大学化学化工学院,四川成都610500

出　　处：《天然气与石油》2023年第3期95-102,共8页Natural Gas and Oil

基　　金：四川省科技计划“含油污泥热脱附处理关键技术研究与工程应用”(2021YFQ0046)。

摘　　要：将钻井平台产生的废弃水基钻井泥浆进行高效、无害化处理对生产过程至关重要。以四川蓬深X井钻探作业中产生的废弃水基钻井泥浆为研究对象,进行化学强化固液分离研究。通过实验研究系统探讨了单一试剂、两种或三种试剂复配的破胶剂对泥浆固液分离效果的影响。在单因素实验中,单独加入石灰CaO的固液分离效果最佳,用量为0.8 g/50 mL;在两种试剂协同作用的双因素实验中,硫酸亚铁FeSO_(4)和CaO的用量应控制在0.6 g/50 mL;在三种试剂复配的正交实验中,影响分离效果的因果主次顺序为FeSO_(4)>CaO>PAC。研究发现,最优化条件下,PAC、FeSO_(4)和CaO的配比为0.3∶0.4∶0.15,所得的清液密度为1.038 g/mL。可为钻井平台产生的废弃水基钻井泥浆的高效、无害化处理提供技术支撑。The efficient and harmless treatment of waste water-based drilling mud generated by drilling platforms is essential to the production process.An experimental study is conducted on chemically enhanced solid-liquid separation of water-based drilling mud produced in a well drilling operation in Pengshen,Sichuan.The effects of gel breaker with single reagent,two or three reagents on solid-liquid separation of mud are systematically discussed through experimental research.The results showed that in the single factor experiment,the solid-liquid separation effect of adding quicklime alone is the best,with a dosage of 0.8 g/50 mL;in the two-factor experiment of the synergistic effect of the two reagents,the dosage of FeSO_(4)and CaO should be controlled at 0.6 g/50 mL;in the orthogonal experiment of the three reagents,the order of causality that affects the separation effect is FeSO_(4)>CaO>PAC chloride.It is concluded that under the optimal conditions,the ratio of PAC,FeSO_(4)and CaO is 0.3∶0.4∶0.15,and the density of the clear liquid obtained is 1.038 g/mL.The study can provide technical support for the efficient and harmless treatment of water water-based drilling mud produced by the drilling platform.

关 键 词：水基钻井泥浆 化学强化 固液分离 泥浆处理剂 

分 类 号：X74[环境科学与工程—环境工程]