摘要
Overpressure sedimentary basins are widely distributed and of great significance to hydrocarbon exploration. This kind of basins has many advantages for hydrocarbon accumulation: The overpressure formation is not only a beneficial source rock, but also an effective capping layer. Based on the study of overpressure basins, the authors put forward a funnel-shaped meshwork-carpet type hydrocarbon accumulation model. The overpressure diapir is the core for hydrocarbon accumulation in overpressure basins. Driven by high pressure, oil and gas will migrate along the funnel-shaped passage system into the overlying low-potential zone above the diapir.