海洋废弃钻井液处理技术研究

Research on disposal of coastal waste drilling fluid

徐良伟 马超 陈书明 雷宇

XU Liangwei MA Chao CHEN Shuming LEI Yu

长江大学石油工程学院, 湖北荆州 434023

Petroleum Engineering of College, Yangtze University, Jingzhou Hubei 434023, China

针对滨海-6井废弃钻井液的特点,提出了破胶-固液分离-固化的思想。通过实验优化破胶剂、絮凝剂、固化剂配方。实验结果表明:100mL废弃钻井液破胶剂加量为2g,絮凝剂为2gAS+2.5%HPAM溶液(质量分数0.1%),固液分层现象明显、出水水质透明。固化剂的加量为1.5%CJ-1、27.7%水泥、7.7%CJ-2、6.2%CJ-3。固化强度和浸出液试验表明:固化体在养护15天后平均强度3.0MPa,浸出液指标达到GB8978-1996《污水综合排放标准》二级标准。

Based on the characteristics of Binhai 6 well, we firstly take measures of gel breaking, then separate solid and liquid, and at last solidify. The prescription of gel breaker, flocculants and curing agents is optimized by the experiments. The result shows that the dosing quantity of breaker is 2g/100 mL, flocculants is 2g AS and the solution of 2.5% HPAM. The separation of solid and liquid is clear, and the color of water is transparent. The quantity of curing agent is 1.5% CJ-1, 27.7% cement, 7.7% CJ-2 and 6.2% CJ-3. It is proved by intensity and dip that the average solidified intensity is about 3.0 MPa after 15 days maintenance, and leachate in-dex meets the standard Ⅱ of Integrated Waste Water Discharge Standard (GB8978-996).

中国石油集团海洋工程有限公司项目"海洋废弃钻井液固化处理技术研究"(编号:201002240154)研究成果。

https://doi.org/10.3969/j.issn.1008-2336.2011.04.084