山地地球物理勘探难点和对策

随着油气勘探领域的不断拓宽，前陆盆地山前带已成为寻找新的油气资源的地带。由于山地地表条件复杂多变，地下构造多为高陡构造，褶皱断层发育，野外施工困难，原始资料品质低，所以地下构造成像困难。针对山地地球物理勘探的难点，由模型正演，提出了山地复杂构造带的油气勘探应选择小道距、高覆盖次数和最佳炮检距的野外采集参数。努力提高山地地震资料的信噪比，应贯穿于资料采集和处理的全过程，并对山地地球物理勘探工作提出了新的对策。

The questions and strategies of geophysical exploration in mountainous areas

As petroleum exploration applied to more and more regions, piedmont zone in foreland basin is becoming new areas in searching for the presence of hydrocarbons. Because of the complex surface and subsurface conditions, the field acquisition is difficult, and the data acquired is low in S/N ratio, and the subsurface structures difficult in imaging. According to the questions in geophysical prospecting, we put forward the acquisition parameters on the basis of forward modeling, with small group interval, high coverage and optimum source-receiver offset as petroleum prospecting for complex structure positions. Improving the S/N ratio of the record should be applied during data acquisition and processing. All of these advance new strategies for geophysical exploration in mountainous areas later.