Factors Affecting Seismic Acquisition Effects on Red Bed in Chuxiong Basin

Abstract

Abstract: Seismic data of red bed in Chuxiong Basin show low signal-to-noise ratio and strong noise interference. Improvement of signal-to-noise ratio is one of the important areas in study of seismic exploration in this region. Based on the study of seismic geological conditions in this region as well as the data acquired in the past, this paper analyzes various factors affecting seismic acquisition effects in this region and draws the following conclusions. First of all, the dual complexity of surface and underground geological structure is the fundamental cause for poor quality of seismic data. Secondly, the main factors affecting seismic acquisition effects include shooting lithology, shot point location, watery stratum and development of interference wave, and limitation of geophone array and geometry design. Focusing on those factors and improvement of signal-to-noise ratio and stack section imaging effect, this paper comes up with a series of effective technologies seismic exploration of Chuxiong Basin, such as multiple channels, small group interval, long array and high folds. Meanwhile, it also points out that wide line acquisition technology is the study area of seismic acquisition method at the next stage in this basin to meet the demand for shale gas exploration.

Wei Ruibiao. Factors Affecting Seismic Acquisition Effects on Red Bed in Chuxiong Basin[J]. China Petroleum Exploration, 2015, 20(3): 64-72.

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