层间管外窜槽检测技术分析与应用

Analysis and Application of Examination Technology of Outside Casing Interlamination Channel

套管与水泥胶结不好容易引起固井质量差,导致发生层间管外窜通,造成层间矛盾及注水井非目的层吸水,影响配注效果,致使分层注水以及分层改造措施效果不理想,对应油井开发状况差,严重影响油田采收率的提高。如何运用管外窜槽检测技术判断分析管外窜槽的原因,准确确定窜槽位置并进行措施治理,成为油田开发中减缓层间矛盾的关键,对提高水驱动用效果发挥着极其重要的作用。

Weak casing cement bonding arouses cement failure, which results in outside casing channel of interlamination, creates interlamination contradiction, causes water absorbing of non-target zones in water injection wells, affects the effect of injection allocation, and finally affects enhancing oil recovery. It has become a key to relief the interlamination contradiction by utilizing the examination technology of outside casing channel to analyze the reasons and define the places of outside casing channel and take effective measures, which plays an important role in improving the effect of waterflood project.