Abstract: The oil well paraffin removal always affects the production of oil field.Tarim LunLan oil field adopted a new Chem-Thermogenic system in oil well paraffin removal,which had acquired great success on site.The new Chem-Thermogenic system makes use of the chemical reaction between natrium and tubing water,then generates heat which could diffuse to the sedimentous paraffin of the tubing wall.Through lab experiments and field application,the technology is verified to be effective in paraffin removal with the advantage of high thermal efficiency,low cost,safe construction work,simple operation,high success ratio.