济阳坳陷中层气藏的地震识别技术

Seismic recognition of mid-depth gas pool in Jiyang depression

济阳坳陷浅、中层天然气比较丰富，浅层（上第三系）岩性气藏的地震勘探技术基本成熟，以亮点技术为核心的碳氢直接识别技术在本区浅层天然气的勘探和产能建设中发挥了重要的作用。借鉴浅层气藏地震勘探的成功经验，在岩石物性分析的基础上，结合模型技术对中层（下第三系）气藏的地震反射特征进行了研究，总结出了在本区具有代表性的亮点、平点、暗点等反射特征，对指导今后中层气藏的地震勘探具有重要的意义。

Natural gas in shallow and And-depth formations in Jiyang depression is rich. Seismic exploration technique for shallow (upper Tertiary) lithologic gas pool has come to maturity. The direct hydrocarbon recognition technique centering on bright spot technique has played a signfican role in shollow gas exploration and productivity construction. Using the successful experience of shallow gas seismic exploration for reforence, on the basis of petrophyaical property analysis we study the seismic refleciton feature for mid-depth (lower Tertiary) gas ed by combining with model technique. We make a summary for the reflection properties such as bright spot, flat spot, and dark spot, which isimportant in guiding the future seismic exploration for mid-depth gas pool.