Case studies of 5 wells with collapsed casing in Daqing Oilfield show that the tool is sensitive to micro-distortion of casing and that the method has its own advantage ov...

• 它在大庆油田5口套损井的检测试验表明:该仪器对套管微变形反映明显,此方法在套管检测方面具有其优势。