Shengli Oilfield Waste Drilling Mud Curing Technology Studies

In the process of drilling,the slurry which is poured into from the boring bar can carry rock fragments from shaft bottom.There is an excess of slurry to come into existence,after drilling.The discarding slurry which is a colloid include clay,additive,sewage and oil.The investigation indicates that salts(especially chloride),diesel oil and a lot of mineral substance,CODer,dissolvable microelement,for instance Chrome Mercury and Arsenic,moreover the pH Scales.If the discarding slurry is discharged direct,it bring pollution.About two billion stere slurry is discharged evey year in our country,and three hundred thousand in shengli oil field.With the development of economy and advancement of environmental protection,how to deal with the discarding slurry is become very important.A great many investigations about the discarding slurry has evolved to deal with,thereinto solidification is the most successful technology.It is extensive use in US and Russia,and then in zhongyuan oil field.During the drilling,with change of area and depth,the used slurry is different.And the component of slurry is different too.So simplex solidify technology is not fit for all the slurry system.In allusion to the slurry system,the kind and proportion of medicament is different.The practice also indicate that solidify directions for producing chemicals is not fit for shengli oil field,if it is used to deal with slurry.And the COD,pH,chroma always over the standard.So it is necessary to improve the solidify directions for producing chemicals to deal with the slurry of shengli oil field.This article confirms the characteristic of slurry,in the basis of investigation.And the dosage of additive,the kind and proportion of medicament are made sure after the experiment.During 8 months,we choose emblematical discarding slurry of shengli oil field to deal with.The result indicate contamination all tally with the national standard and local standard.It is prove that this solidify directions for producing chemicals is fit for shengli oil field.The result offer a rational way to deal with discarding slurry of shengli oil field.It is important for environmental protection,and is used for reference in other oil field.