同沉积构造发育特征及其油气地质意义

Characteristics and petroleumsignificance of syndepositional structure

李震

Li Zhen

胜利油田分公司海洋采油厂，山东 东营 257237

(Offshore Oil Production Plant, Shengli Oilfield Company, SINOPEC, Dongying 257237, China).

同沉积构造是在断层活动与沉积充填压实共同作用下形成的一种构造，是我国东部已进入高勘探阶段的中新生代含油气盆地下一步油气勘探的重要目标。文章系统总结了同沉积构造的发育机理、影响因素，综合分析了同沉积构造对烃源岩、储集体和含油气圈闭的控制作用，并研究了同沉积断层及其次生断层在油气运移和聚集过程中的双重作用。

The syndepositional structure is formed during faulting and syndepositing. It is the main target of oil exploration in the oil and gas bearing basins which have been highly explored in eastern China. The paper systematically summed up the developmental mechanisms and affecting factors of the syndepositional structure. It also analyzed the syndepositional structure’s controlling to source rocks, to reservoir rocks and to oil traps. At last, it studied the double actions of the syndepositional faults and their secondary faults in the oil migrating and accumulating.