1. Dawangbei area of Chezhen Sag had rich oil and gas, complex geologic framework and structural evolution caused the multiple trap types.
车镇凹陷大王北地区油气十分富集，复杂的地质结构和构造演化过程导致了该区圈闭类型十分丰富。
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2. The characteristics of compaction and solution, cementation, secondary porosity during diagenesis processes and the distribution of secondary porosity zone in Chezhen Depression are described.
3. The characteristics of compaction and solution, cementation, secondary porosity during diagenesis processes and the distribution of secondary porosity zone in Chezhen Depression are described.
