关键词: 营32断层, 泥岩涂抹, 断层封闭性, 封闭机理, 断距, 岩性组合

Abstract: The quantitative calculation of shale smear and some unresolved problem were researched based on the phenomenon of shale smear, fault sealing mechanisms and its controlled factors. The shale smear was controlled by fault throw, lithologic association and shale plasticity. According to structural history and compaction history, the first active period of fault,buried depth of formation and faulted formation plasticity can be determined. Furthermore, the shale smear may be counted if shale smear occurred. The study of shale smear shows that hydrocarbon remigration happened along a few layers in south fault of Ying 32,because the sealing property of a few important layers was poor, which made hydrocarbon migrate across the fault,while all oil-bearing layers were sealed in the north fault of Ying 32. All those indicated the difference of sealing properties and dynamic state for the same fault.

Key words: Ying 32 Fault, shale smear, fault sealing, sealing mechanism, fault throw, lithologic association