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研究了一种分子结构中含有较多膦酸基的膦酸盐型防垢剂．对这种防垢剂的合成条件进行了正交试验优化．按优化条件合成的防垢剂对碳酸钙垢、硫酸钙垢、硅酸钙垢均有预防作用；在最佳浓度下对碳酸钙和硫酸钙的防垢率接近１００％，对硅酸钙的防垢事可达９０％以上，这种防垢剂溶液对钢铁的腐蚀率低于油田模拟注入水，且对地层无伤害，可用吸附法设置在近井地层中使用．
A phosphonate type scale inhibitor containing more phosphonic acid groups in its molecular structure was studied. The synthesis conditions of this scale inhibitor were optimized by orthogonal test. The antifouling agent synthesized under optimized conditions has a preventive effect on calcium carbonate scale, calcium sulfate scale and calcium silicate scale; the anti-scaling rate of calcium carbonate and calcium sulfate is close to 100% at the optimal concentration, Anti-scaling up to 90% or more, this anti-scaling agent solution to the corrosion rate of steel less than the injection of water to simulate the field, and no damage to the formation, the adsorption method can be set in the near-well formation.