砂岩酸化技术在晋45油田开发中的应用

砂岩基质酸化技术是油水井增产、增注的传统技术。在晋45砂岩油田开发过程中，结合储层特点和油水井表皮堵塞特点，发展和优选了酸化工艺技术，即开发前期应用普通土酸酸化进行表皮解堵；中期应用自生土酸进行重复深度酸化；后期进行暂堵酸化。该技术已在晋45砂岩油田经过多井次现场应用，增产、增注效果明显。酸液配制方便，现场施工简单。

Application of Sandstone Acidizing Technique in Development of Jm45 Oilfield

The technique of sandstone matris acidiaing is the traditional one of increasing production and injection.During development process of Jin45 sandstone oilfield,combined with the reservoir's feature and the skin plugging characteristics of oil and water wells,the acidizing technique was developed and optimized that is using common mud acid acidizing for skin broken down at early time of development,self-generating mud-acid acidizing for repeat depth in the middle of it,temporary blocking acidizing at later time.By practical applications in many wells of Jin45 sandstone oilfield,it was proved that this technique has an obvious result in improving production and injection,preparation of acidizing fluid is convenient and field operation is simple.