莱州湾凹陷东部走滑带盐相关构造特征-地球科学与环境学报.PDF

30 4 Vol .30 No .4 2 0 0 8 12 　Journal of Earth Sciences and Environment 　 Dec.2 0 0 8 1, 2 2 2 2 2 孙和风 ,周心怀 ,彭文绪, 王德英,彭　刚 (1. , 102249; 2., 300452) :, , , , 。 、、、;、 ;。———4 。 。 :;;; : 618.130.2;TE122.3　:A 　:1672-6561(2008)04-0380-05 Characteristics of Salt-related Structures in the Eastern Strike-Slip Zone of Laizhou Bay Sag 1,2 2 2 2 2 SUN He-feng , ZHO U Xin-huai , ENG Wen-xu , WANG De-ying , ENG Gang (1.Schoolof N atural Resource and Inf ormation Technology, China University of Petroleum, Beij ing 102249, China; 2.Research Instituteof Exp loration and evelopment, Tianj inBranch of China National Off shore Oil Corporation Limited, Tianj in 300452, China) Abstract:It has been proved that the formation of salt-related structure in the eastern Laizhou bay sag was controlled by strike-slipping and gravitational gliding, according to the drilling data and seismic profiles.The over-mature diapirs gradually transited to salt pillow f rom south to north in the strike-slip zone.The suprasalt structures include:salt anticlines, salt-collapse basin, turtleback structures, stratigraphic overlaps and screened structures.The main salt bed structures are pillow-like salt diapirs, salt plugs and allochthonous salt sheets.The subsalt structures may be related to basement uplift.The salt-related structures experienced four stages w hich are generation, adjustment, maturation and reactivation.It has been found that the petroleum accumulation of strike- slip zone w as controlled by salt-related traps in the eastern Laizhou bay sag.