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碳酸盐岩气藏在四川盆地天然气勘探中占有重要的位置,但是对栖霞组的研究还没有得到足够的重视。裂缝和溶蚀孔洞是栖霞组的最主要的储集空间,可靠的预测裂缝和溶蚀孔洞发育带是能否有效勘探开发该类型油气藏的重要因素。文章在综合分析测井地震资料的基础上,对研究区内储层波形进行对比和平面分布刻画,同时利用相干属性和叠前各向异性检测对裂缝和溶蚀孔洞进行预测,提出了勘探有利区域并总结储层发育模式,为栖霞组气藏进一步的勘探提供了理论支持。
Carbonate gas reservoirs occupy an important position in natural gas exploration in the Sichuan Basin, but the research on Qixia Formation has not received enough attention. Cracks and dissolved pores are the most important reservoir space in Qixia Formation. Reliable prediction of fractures and dissolved pore development zones is an important factor for the effective exploration and development of this type of reservoirs. Based on the comprehensive analysis of logging seismic data, the paper compares the reservoir waveform in the study area with the plane distribution, and uses the coherence property and prestack anisotropy to predict the fracture and dissolution holes. And summarizes the reservoir development model, which provides theoretical support for the further exploration of Qixia Formation gas reservoirs.