The diagenetic sequence and pore evolution of gas zone are very different from those of non-gas zone owing the differences of the water energy at sedimentary stage and the diagenesis at burial stage.

• 由于沉积阶段水体能量的差异和埋藏阶段成岩作用的不同，气层和非气层的成岩序列和孔隙演化模式存在较大差异。