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三湖坳陷的生物气岩性气藏勘探尚处于探索阶段。根据生物气岩性气藏的有利沉积相带,首先进行生物气岩性气藏岩石物理参数分析和含气异常正演模拟,用于指导滩坝砂含气异常的地震反射特征识别;结合构造背景,利用敏感地震属性优选可能的含气区带;最后,在异常区带内,利用频谱分解、时频分析、叠后反演及叠前烃类检测等多手段落实有利目标,形成一套适用于三湖坳陷第四系识别生物气异常的技术。
Exploration of biogas lithologic gas reservoirs in the Sanhu Depression is still under exploration. According to the favorable sedimentary facies belt of biogas lithologic gas reservoirs, petrophysical parameter analysis and gas forward anomaly modeling of biogas lithologic gas reservoirs are firstly carried out to guide the seismic reflection feature recognition of gas bearing anomalies of beach barrage. Combined with the structure Background, the use of sensitive seismic attributes to optimize the possible gas zone; Finally, within the anomalous zone, the use of spectrum decomposition, time-frequency analysis, poststack inversion and pre-stack hydrocarbon detection and other means to achieve the desired goal, to form a set It is suitable for the technology of recognizing the abnormality of biogas in the Quaternary of Sanhu Depression.