摘要
海上钻井平台空间狭小,暂存空间有限,对处理效率和安全要求(非危险化学品)提出了刚性约束,导致陆地固液分离技术难以简单复制。鉴于海洋油气田开发的特点,实现废弃钻井泥浆的减量化已成为海洋油气田开发过程中亟待解决的难题。以海上钻井泥浆为研究对象,探究不同pH条件对絮凝剂的固液分离影响,并揭示了相关药剂的作用机制。研究结果表明,以聚合硫酸铁(PFS)为优选药剂,调理后的压滤速度提升至24.56×10^(-5)m^(3)/(m^(2)·s),同时滤饼含水率降低至45.8%。此外,钻井泥浆理化性质的分析显示,PFS通过有效破坏聚合物分子构型和絮凝黏土颗粒,从而实现显著的脱水性能改善。
Offshore drilling platforms have small space and limited temporary storage space,which impose rigid constraints on treatment efficiency and safety requirements(non-hazardous chemicals),making it difficult to simply replicate solid-liquid separation technology on land.Therefore,in view of the characteristics of offshore oil and gas field development,realizing the reduction of waste drilling mud has become a difficult problem to be solved in the process of offshore oil and gasfield development.In this study,the solid-liquid separation offlocculants was investigated under different pH conditions with offshore drilling mud as the research object,and the action mechanisms of related agents were revealed.The results showed that polymeric ferric sulfate(PFS)was the preferred-5 agent,and the conditioned filtration rate was increased to 24.56×10^(-5)m^(3)/(m^(2)·s),while the water content of thefilter cake was reduced to 45.8%;moreover,the analysis of the physicochemical properties of the drilling mud showed that PFS could achieve a significant improvement in the dewatering performance by effectively destroying the polymer molecular configuration andflocculation of the clay particles.
作者
李伟
王鑫
刘文士
Li Wei;Wang Xin;Liu Wenshi(China Oilfield Services Co.,LTD,Tianjin 300459;Tongwei Solar(Chengdu)Co.,LTD,Neijiang 610200;School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500)
出处
《石化技术》
2025年第1期228-230,共3页
Petrochemical Industry Technology
关键词
海洋油气田开发
钻井泥浆
絮凝剂
固液分离
Offshore oil and gasfield development
Drilling mud
Flocculant
Solid-liquid separation
