Ground surface blowout detecting method

The invention provides a ground surface blowout detecting method. The ground surface blowout detecting method includes the steps that firstly, an electric current field is set up according to a detected oil well, the detected oil well is subjected to potential detection, and initial potential field data of the detected oil well are obtained; secondly, steam is injected into the detected oil well; thirdly, the potential of the detected oil well where the steam is injected is detected, and potential field data after steam injection are obtained; and fourthly, by comparing the initial potential field data of the detected oil well and the potential field data obtained after steam injection, whether blowout of the detected oil well occur is judged. By means of the method, the condition of the detected oil well can be quickly and conveniently detected, blowout cracks are prevented from continuing expanding, and great loss caused by the blowout cracks can be restrained in time. 本发明提供种地表窜喷检测方法，该地表窜喷检测方法包括：步骤，根据被测油井建立