学术论文

      典型页岩气油基钻屑的组成分析及危害评价

      COMPOSITION ANALYSIS AND RISK ASSESSMENT OF TYPICAL OIL-BASED DRILL CUTTINGS FROM SHALE GAS FIELDS

      摘要:
      分别从重庆某两个页岩气井场选取水平井油基钻屑(A)和直井油基钻屑(B)样品,详细分析其基本性质及组成.结果表明:油基钻屑由72.78% ~81.34%的灰分、14.14% ~26.21%的有机物和1.01% ~4.52%的水分组成.灰分来源于钻井液中的无机添加剂和钻头破碎的岩石碎屑,主要成分为CaCO3、BaSO4、SiO2和Fe2O3.有机物来源于调制钻井液的基础油和各类有机添加剂,主要成分为烷烃、多环芳烃、苯系物和烯烃.碱性盐、重金属和有机物是油基钻屑中的三类有害物质,且其危害依次增加,若不加以有效处置,将对当地生态环境和人类健康造成持久性破坏.
      Abstract:
      Two typical oil based drilling cuttings (OBDC) were taken from a vertical well (A) and a horizontal well (B) in Chongqing shale gas fields,respectively.Their basic properties and composition were analyzed in detail.The results indicated that the OBDC consisted of ash of 72.78% ~81.34%,organic matter of 14.14% ~26.21%,and water of 1.01% ~4.52%.Inorganic salts and solid oxides were derived from inorganic additives in drilling fluids and detritus.The main constituents were CaCO3,BaSO4,SiO2 and Fe2O3.Organic compounds came from basic oils and various organic supplements.The main components were alkanes,PAHs,benzenes and olefins.Alkaline salts,heavy metals and organic matter were three kinds of toxic substances in OBDC,and their hazards increased in turn.If not disposed properly,they would cause long-term damage to the local ecological environment and human health.
      作者: 陈则良 [1] 陈忠 [1] 陈乔 [2] 姚光华 [3] 谭彦虎 [2] 徐愿坚 [1]
      Author: CHEN Ze-liang [1] CHEN Zhong [1] CHEN Qiao [2] YAO Guang-hua [3] TAN Yan-hu [2] XU Yuan-jian [1]
      作者单位: 中国科学院重庆绿色智能技术研究院中国科学院水库水环境重点实验室,重庆400714;中国科学院大学,北京100049 中国科学院重庆绿色智能技术研究院中国科学院水库水环境重点实验室,重庆,400714 重庆矿产资源开发有限公司,重庆,400042
      刊 名: 环境工程 ISTICPKU
      年,卷(期): 2017, 35(8)
      在线出版日期: 2017年10月16日
      基金项目: 中国科学院“百人计划”项目“临界水化学”,重庆市基础与前沿研究计划项目“超临界水氧化处理页岩气钻井固废(油基钻屑)的新技术研究”,重庆市国土房管科技计划项目“页岩气钻井固废的超临界水氧化技术研究—以重庆地区为例”,涪陵区科技计划项目“涪陵区页岩气低成本绿色开发关键技术研发及应用”(Y532230M10)的成果