莺歌海盆地中深层黄流组高压气藏形成新模式——DF14井钻获强超压优质高产天然气层的意义

摘要

A gas pay with good quality and high production was discovered in Member 1 (with a pressure coefficient >1.9), Huangliu Formation of the middle-deep interval in Yinggehai basin by drilling Well DF14, having the significance to make a play breakthrough. The accumulation mechanism was analyzed for this overpressure gas reservoir, and a new model of lithological gas reservoir was presented, which is characterized by vertical accumulation, high-pressure sealing, reser-voiring in large submarine fans and lateral sealing by a distal overlap toward the diapir structure.%DF14井在莺歌海盆地中深层黄流组一段(压力系数大于1.9)获得优质高产天然气流,具有重要的领域突破意义.分析了黄流组高压气藏成藏机制,指出气藏具有纵向聚集、高压封盖、大型海底扇砂岩储集、向底辟构造远端超覆尖灭形成侧封的岩性气藏新模式.