四川环境2023，Vol.42Issue(6)：16-23,8.DOI:10.14034/j.cnki.schj.2023.06.003
川南页岩气开发白油基与柴油基岩屑污染特征及源解析
Pollution Characteristics and Source Analysis of Cuttings in White Oil-based and Diesel Oil-based Shale Gas Development in Southern Sichuan
蒙恬 1李佳忆 2于劲磊 1赵靓 1王红娟 1蒋国斌1
作者信息
- 1. 中国石油西南油气田公司安全环保与技术监督研究院,成都 610000||页岩气评价与开采四川省重点实验室,成都 610000
- 2. 国家管网集团西南管道有限责任公司贵州省管网有限公司,成都 610095
- 折叠
摘要
Abstract
In order to systematically identify the pollution characteristics and sources of oil-based cuttings,the content of heavy metals,polycyclic aromatic hydrocarbons(PAHs)and petroleum hydrocarbons were analyzed by inductively coupled plasma emission spectrometry and gas chromatography-mass spectrometry in a shale gas block in southern Sichuan.The results showed that the heavy metal content of white oil-based cuttings was generally higher than that of diesel-based cuttings,but the differences were mainly due to the different stratigraphy and additives,while the oil content of oil-based cuttings mainly depends on the separation effect of the solid control system of the drilling platform,and all of them were little related to the selection of base oil.The total PAH content in diesel-based cuttings(28.73 mg/kg)was significantly higher than that in white oil-based cuttings(6.92 mg/kg),but both were mainly low-toxic 2～4 ring PAHs.The former mainly originated from diesel fuel and was dominated by pyrene(Pyr),naphthalene(Nap),phenanthrene(Phe)and anthracene(Ant).The latter mainly originated from the thermal transformation of white oil under high temperature ground conditions and was dominated by pyrene(Pyr)and anthracene(Ant).In general,there are some differences in pollution characteristics between white oil-based and diesel-based cuttings,and white oil has better environmental performance.It is suggested to reduce the use of diesel-based drilling fluids in the future production process,while increasing the research and development of new green drilling fluids.关键词
油基岩屑/白油基/柴油基/污染特性/PAHsKey words
Oil-based cuttings/white oil-based/diesel-based/pollution characteristics/PAHs分类
资源环境引用本文复制引用
蒙恬,李佳忆,于劲磊,赵靓,王红娟,蒋国斌..川南页岩气开发白油基与柴油基岩屑污染特征及源解析[J].四川环境,2023,42(6):16-23,8.
