振动解堵技术在注汽井中的应用

为了改善稠油油田地层流体的渗流状况,解决常规注蒸汽方法效果差的问题,将振动采油技术与注蒸汽相结合,通过大功率的振动波作用,对9口井进行振动解堵试验。阐述了大功率井下振源的设计思路和工作原理,指出该项技术的关键在于选择合适的振动频率,而选择岩心固有频率附近的振动频率能收到最好的效果。分析了应用该项技术的选井条件、施工工艺及配套相关工艺。现场试验表明,对于注汽高压井,该技术降压效果明显,处理后注汽效果较好,证明注汽井实施振动解堵降压工艺是可行的。

Application of the vibration-based deplugging technology to steam injection wells

To improve the filtrational condition of the formation fluids in heavy-oil oilfields and solve the problem that the ordinary steam injection method does not work effectively,a vibration-based deplugging experiment of the nine wells was conducted,combining the vibration oil recovery technology and steam injection and utilizing the function of vibration wave. The thought of design and working mechanism for the high-power borehole amplitude have been expounded,pointing out that the key of the technology is to choose the proper vibration frequency. The choice of the vibration frequency which is close to the inherent frequency of the rock core can have the best effect. The well selection conditions,construction technologies and relevant matching techniques for application of the technology have been analyzed. The field test shows that,as for steam injection high-pressure wells,the technology has an obvious effect of pressure drop and a better effect of steam injection after the treatment,which proves that the vibration-based deplugging technology for steam injection wells is applicable.