Decontamination of Drilling Fluid Waste from Coalbed Methane Well
Coalbed methane drilling can produce drilling fluid waste,and inappropriate treatment will influence the environment and subsequent operation.Because of the scattered coalbed methane well locations and cost reasons,domestic and foreign conventional oil and gas drilling fluid waste method cannot be copied.So the solidified method is more appropriate.Referencing the region of Lin Fen,by detecting five wells waste drilling fluid indoor,the indexes are pH,coloration,suspended matter,BOD5,COD,total chromium and hexavalent chromium.The drilling fluid index of waste-polymer is beyond the Grade-2 National Wastewater Discharge Standards,but the waste Fuzzy-Ball based drilling fluid reach the standards.It has been designed indoor that the formula of waste Fuzzy-Ball based drilling fluid solidified methods which is mainly based on cement.The indexes of leaching solution are pH,coloration,suspended matter(99mg/l),BOD5(52.3mg/l),COD(117.4mg/l),total chromium(0.32mg/l),hexavalent chromium(0.13mg/l) and the leaching solution can reach the Grade-2 National Wastewater Discharge Standards.Solidification mud can achieve without large appliance and can deal with 200m3 waste Fuzzy-Ball based drilling fluid of JU2-H well in 10 days,its indexes of leaching solution can reach the Grade-2 National Sewage Discharge Standards.The strengths must be sure for the later vehicle transporting and the cultivation after land fill.Using Fuzzy-Ball based drilling fluid when drill can ensure the source controlling of waste drilling fluid pollution.At the same time,it can cost lower and operate easier.
coalbed methane waste drilling fluid solidification Fuzzy-Ball based drilling fluid
Lijun Guo Jian Li Huanyu Hu Haining Liu Jia Lu
China University of Ming and Technology, Beijing, 100083, China PetroChina Coalbed Methane Company Limited, 100028, Beijing, China
国际会议
昆明
英文
962-968
2012-10-12（万方平台首次上网日期，不代表论文的发表时间）