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横波地震勘探在我国还处于初期阶段。在东濮凹陷文留地区和内蒙赛汉塔拉地区开展的横波地震勘探工作,取得了一些有意义的结果。 1.获得了ν_s、ν_p/v_s、σ和岩性及油气变化的关系曲线,这些曲线可以作为岩性解释和烃类检测的依据。 2.纵波主频约为横波主频的2～2.5倍,而且横波的频带比较窄,这和以往的结论是不一致的。 3.把纵横波剖面分别和井孔中地层连接时,横波剖面更为可靠。横波剖面对于识别小断层、小幅度构造和追踪薄砂层也更有效果。
Sheep wave seismic exploration in our country is still in its infancy. Some significant results have been obtained from the seismic exploration of the Sheunghaw area in the Wenliu area of Dongpu depression and in the Saihantanla area of Inner Mongolia. 1. Obtained ν_s, ν_p / v_s, σ and lithology and oil and gas changes in the curve, these curves can be used as a basis for interpretation of lithology and hydrocarbon detection. 2. The main frequency of the longitudinal wave is about 2 to 2.5 times the frequency of the transverse wave, and the frequency band of the transverse wave is relatively narrow, which is inconsistent with the previous conclusion. 3. The cross-section of the S-wave is more reliable when it is connected with the formation in the borehole respectively. The S-wave profile is also more effective for identifying small faults, for small amplitudes and for tracing thin sand layers.