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塔河地区以沙漠地表为主,目的层埋藏普遍较深,限制了地震采集资料对地质体的分辨能力。而另一方面主要目的层奥陶系碳酸盐岩储层均一性差,缝洞体尺寸不一,古生界碎屑岩储层较薄,断层断距普遍较小,对地震资料的分辨率要求高。数字检波器具有高分辨率、大动态范围等优点,多个地区应用效果表明其接收资料对微幅构造以及微、小地质体的识别能力较强。为了提高塔河地区地震资料品质,探索落实各类圈闭和开展高精度储层预测的更有效采集方法,第六物探大队在顺托果勒北区块进行了单分量数字检波器DSU1和常规模拟检波器的采集对比试验。通过应用多种针对性处理技术,对比分析了两种检波器接收资料品质指标参数(能量、分辨率、信噪比、成像效果),认为单分量数字检波器能够有效改善塔河地区地震采集资料品质,尤其在提高分辨率方面效果显著,在该地区适用性较强,推广应用前景较好,资料处理提高空间较大。
The Tahe area is dominated by desert land surface, and the burial depth of the target layer is generally deep, which limits the resolving power of the seismic data to the geological body. On the other hand, the Ordovician carbonate reservoirs in the main strata are poor in homogeneity, with different sizes of fractured cave bodies, thin Paleozoic clastic reservoirs and generally small fault faults. The resolution of seismic data High standard. Digital geophones have the advantages of high resolution and large dynamic range. The application results in many areas show that their received data have strong ability to recognize micro-structures and micro- and small-scale geologic bodies. In order to improve the quality of seismic data in the Tahe area and to explore more effective methods of acquisition for various types of traps and high-precision reservoir prediction, the sixth geophysical brigade conducted a single-component digital geophone DSU1 and conventional Analog geophone acquisition comparison test. Through the application of a variety of targeted processing techniques, the comparative analysis of the data quality parameters (energy, resolution, signal-to-noise ratio, imaging results) received by the two geophones, the single component digital geophone can effectively improve the seismic acquisition data Quality, especially in improving the resolution of significant results in the region of strong applicability, better prospects for the promotion and application of data processing to improve the space.