水基钻井固体废物处理处置技术研究进展

随着油气田环保政策趋严，水基钻井固废由于产量大、无害化率低，如何有效地处理处置成为业内亟须攻克的难题。介绍了水基钻井固废的污染特征，在此基础上总结并对比了水基泥浆、水基岩屑/泥饼的常见处理处置技术的特点及优劣，主要包括固化/稳定化、固液分离、微生物处理、焚烧和填埋等；提出了我国目前水基钻井固废处理处置存在的4个问题:重油基轻水基、固废处理设施产能不足、技术规范及标准缺失、部分水基体系处理难度大，并针对这些问题对未来研究方向进行了展望。

RESEARCH PROGRESS ON TREATMENT AND DISPOSAL OF WATER-BASED DRILLING SOLID WASTE

As environmental protection policies has become stricter in oil and gas fields and the large output and low disposal rate of water-based drilling waste, how to effectively deal with solid waste from water-based drilling has become an urgent problem in the industry. In this paper, characteristics of water-based drilling waste were introduced. On this basis, advantages and disadvantages of treatment and disposal methods of drilling fluid and cuttings or dried mud were summarized and compared, including solidification or stabilization, solid-liquid separation, microbial treatment, incineration and landfill, etc. This paper puts forward four problems existing in disposal of water-based drilling waste in China, including attaching importance to oil-based waste rather than water-based waste, insufficient solid waste disposal capacity, lack of specifications and standards, and difficulty in treatment of some water-based drilling systems. On the basis of these problems, the future research focus is forecasted.