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在未勘探盆地中进行油气调查,是从建立描绘盆地怎样形成、沉积物如何充填以及盆地怎样变迁的模式开始的。盆地的形成方式和地壳历史决定了盆地的沉降和热流史、规模和形态、构造型式和沉积物沉积时的盆底地形。沉积充填是在大气圈、水圈和生物圈中普遍存在的古地理位置和古环境条件之间动力的相互作用的结果。成熟史包括压实、温度、成岩作用和流体流动的演化过程。描述各沉积盆地的特性的模式,是预测世界上未来油区中储集层、圈闭、源岩、盖层和成熟度的评价参数的格架。
Oil and gas surveys in unexplored basins begin with the establishment of patterns that depict how the basins formed, how the sediments were filled, and how the basins changed. The formation of the basin and crustal history determine the basin’s history of sedimentation and heat flow, its size and shape, its tectonic pattern, and the basin topography at the time of sediment deposition. Sediment filling is the result of dynamic interactions between paleogeographical locations and paleoenvironmental conditions that prevail in the atmosphere, hydrosphere and biosphere. Mature history includes compaction, temperature, diagenesis and the evolution of fluid flow. The pattern characterizing each sedimentary basin is a framework for estimating the evaluation parameters of the reservoirs, traps, source rocks, cap rocks and maturity in future oil zones in the world.