Research Of Free Of Paraffin Removal Technology On Mechanical Production Wells

No matter what the water content level of high waxy crude oil, wax removalmust be done to the production wells regularly. Due to the consumption of largequantities of natural gas, water, electricity and other energy, the technology of freewax removal is researched and applied in the production wells. Using dosing processmakes crude oil flow improvers form contemplated emulsion in the wellbore. Finally,it realizes free wax removal and transportation with low temperature which meansmodifier，not wax removal and not heated. The technology does a lot of trials andfield application, making sure its feasibility,and applies to all types of wells inDaqing Placanticline Oilfield.Firstly, the research of the contemplated emulsion’s flow law can be thetheoretical basis on using crude oil flow improver to achieve wells free wax removal,ground cryogenic transport, improving the efficiency of the pump.Secondly, A comprehensive analysis of the variation of the on-way resistance isbe done by experiments, finding the relationship between the pressure drop,temperature and the modifiers’ concentration. Then discovering the variation whencontemplated emulsion flowing into the pump and its start law in the tube, at the sametime, clarifying the principle.Lastly, introducing the wellhead‘s dripping dosing process, theory and design,achieving the accurate control of pharmacy solution’s amount and continuousquantitative dosing. Compared to the electric pumps of power wellhead dosing devicewhich are used at home and abroad, it has many outstanding advantages. The effect ofthis technology application is obvious, it can be applied to double-pipe heat tracingprocess and annular flow of all kinds of production wells large-scalely. It can reduceproduction costs and ensure crude stable,so suggesting to spread this technology.