Development And Application Of Solid Sustained Release Anti-corrosion Scale Inhibitor

Exploitation of oil field on-land has came into the anaphase in our country. Blocking under the oil well and corrosion has became more and more obviously with the using of polymer and temary operator extensively. Not only dose bump testing frequently influence the production ability, but it also waste a lot of money on maintaining. So resolving the problems of scaling and corrosion has become a tough question for discussion.This article mainly develop a kind of solid relaxed dispel anti-scaling.Fixing it under the oil extraction bump .when extraction liquid transfluxing, it can dissolution slowly and the effective component of anti-corrosion blocking can be released slowly by the mine while to gain the intention of anti-scaling and postpone corrosion. Progressively can we get the purpose of avoiding the block of oil extraction bump and extending the testing term.All kinds of causation which cause blocking of water flooding from oil field have been analyzed in this article. It is considered that Ca2+ ion ,Mg2+ ion and silicate ion are easily to form blocking by adsorption,riming and sedimentation at high value of PH. Feasible temperature and slowly velocity of flowing accelerate the blocking. Mechanism of inorganic compound and organic compound anti-scaling in common use also be studied.The best direction for production chemicals of solid anti-scaling has been determined by experimentations. Polyethylene alcohol is mainly component of solubility solid which can dissolved easily in water and velocity of dissolution is slow when the temperature is between 80℃and 90℃. Mostly components of anti-scaling are EDTMP and HPMA ects. There are two qualifications they must satisfied. Frist is they can dissolved mutually with PVA,second is it has good anti-corrosion properity to oil field sewage.The solid anti-scaling chemical should acquire qualifications subscribed as follow,Frist easy production techniques and command easily; second the slow velocity of dissolution; third anti-corrosion and blocking should have effective capabilities; forth the period of validity is one year at least. solid anti-scaling chemical ability is on the safe side which has been testified by the simulate experimentations. anti-scaling ration arrive 95.45% at least to the tenth oil extraction plant and good anti-scaling property. The solid anti-scaling chemical can not only applied in well equipment, but also applied in oil field sewage system, minitype boiler, heating meshwork, which possess the promising...