Development mechanism and identification methods of subtle strike-slip faults in the Neogene-Quaternary of Bohai Sea
-
摘要:
渤海海域新近系—第四系地层中发育大量地震资料中难以识别的“隐性走滑断层”，其断面陡立、断续分布、断距较小。在油气勘探过程中，隐性断层认识失败导致圈闭失效、勘探失利的现象时有发生，因此亟需从断层发育机理上重新认识且有效刻画隐性走滑断层。基于渤海新近纪—第四纪构造背景以及三维地震资料，对隐性走滑断层发育机理以及识别方法进行探究，结果表明，渤海新近纪—第四纪隐性走滑断层为先存断层斜向拉伸构造背景之下发育的位移分异式走滑断层，不受基底走滑断层直接控制；先存边界断层与斜向拉伸方向夹角α、先存边界断层与斜拉伸展断层夹角θ以及走滑分异概率P之间存在特定关系，利用这一原理可以判断分异型隐性走滑断层是否发育，并取得了良好的应用效果。本研究明确了渤海新近纪—第四纪隐性走滑断层发育机理与判识方法，为油气勘探提供了重要指导。
Abstract:A large number of "subtle strike-slip faults" are developed in the Neogene-Quaternary strata in the Bohai Sea, which are difficult to identify in seismic data. These faults are steep, discontinuous, and have small fault throws. The existence of subtle faults could destroy the trap. In the process of oil and gas exploration, failure to identify subtle faults will lead to exploration failure. Therefore, it is urgent to re-understand subtle strike-slip faults from the perspective of fault development mechanism and guide their effective characterization. Based on the Neogene-Quaternary tectonic background of the Bohai Sea and three-dimensional seismic data, the development mechanism and identification method of subtle strike-slip faults were explored. Results show that the Neogene-Quaternary subtle strike-slip faults in the Bohai Sea are displacement-partitioned strike-slip faults developed under the oblique extensional tectonic background of pre-existing faults, and they are not directly controlled by basement strike-slip faults. There is a specific relationship among the angle α between the pre-existing boundary fault and the oblique extension direction, the angle θ between the pre-existing boundary fault and the oblique extension faults, and the probability P of displacement partitioning of strike-slip. This principle was used to effectively determine whether the subtle strike-slip fault was developed, and good application results were achieved. This study clarified the development mechanism and identification method of subtle strike-slip faults in the Neogene-Quaternary in the Bohai Sea, providing important guidance for oil and gas exploration.
-
-
[1] 王伟锋,周维维,周杰,等. 金湖凹陷隐性断裂带形成机制及分布[J]. 吉林大学学报:地球科学版,2014,44(5):1395-1405.
WANG W F,ZHOU W W,ZHOU J,et al. Formation mechanism and distribution of buried fault zone in the Jinhu Sag[J]. Journal of Jilin University (Earth Science Edition),2014,44(5):1395-1405.
[2] 周维维,王伟锋,安邦,等. 渤海湾盆地隐性断裂带成因类型特征及其对油气聚集的控制作用[J]. 天然气地球科学,2014,25(11):1727-1734.
ZHOU W W,WANG W F,AN B,et al. Genetic types of potential fault zone and its significance on hydrocarbon accumulation[J]. Natural Gas Geoscience,2014,25(11):1727-1734.
[3] 王伟锋,周维维,徐守礼. 沉积盆地断裂趋势带形成演化及其控藏作用[J]. 地球科学,2017,42(4):613-624.
WANG W F,ZHOU W W,XU S L. Formation and evolution of concealed fault zone in sedimentary basins and its significance in hydrocarbon accumulation[J]. Earth Science,2017,42(4):613-624.
[4] CROOK A J L,WILLSON S M,YU J G,et al. Predictive modelling of structure evolution in sandbox experiments[J]. Journal of Structural Geology,2006,28(5):729-744. doi: 10.1016/j.jsg.2006.02.002
[5] HARDY S. Propagation of blind normal faults to the surface in basaltic sequence:insights from 2D discrete element modeling[J]. Marine & Petroleum Geology,2013,48:149-159.
[6] MITRA S,MILLER J F. Strain variation with progressive deformation in basement-involved trishear structures[J]. Journal of Structural Geology,2013,53:70-79. doi: 10.1016/j.jsg.2013.05.007
[7] 汪泽成,赵文智,门相勇,等. 基底断裂"隐性活动"对鄂尔多斯盆地上古生界天然气成藏的作用[J]. 石油勘探与开发,2005,32(1):9-13. doi: 10.3321/j.issn:1000-0747.2005.01.003
WANG Z C,ZHAO W Z,MEN X Y,et al. Control of basement fault minor-activity on gas pool formation of Upper Paleozoic,Ordos Basin[J]. Petroleum Exploration and Development,2005,32(1):9-13. doi: 10.3321/j.issn:1000-0747.2005.01.003
[8] 赵文智,胡素云,汪泽成,等. 鄂尔多斯盆地基底断裂在上三叠统延长组石油聚集中的控制作用[J],石油勘探与开发,2003,30(5):1-5.
ZHAO W Z,HU S Y,WANG Z C,et al. Key role of basement fault control on oil accumulation of Yanchang Formation,Upper Triassic,Ordos Basin[J]. Petroleum Exploration and Development,2003,30(5):1-5.
[9] 薛永安,吕丁友,胡志伟,等. 渤海海域隐性断层构造发育特征与成熟区勘探实践[J]. 石油勘探与开发,2021,48(2):233-246.
XUE Y A,LYU D Y,HU Z W,et al. Tectonic development of subtle faults and exploration in mature areas in Bohai Sea,East China[J]. Petroleum Exploration and Development,2021,48(2):233-246.
[10] 牛成民,薛永安,黄江波,等. 渤海海域隐性走滑断层形成机理、识别方法与控藏作用[J]. 中国海上油气,2019,31(6):1-12.
NIU C M,XUE Y A,HUANG J B,et al. Formation mechanisms,identification methods and control effects of recessive strike-slip faults in the Bohai sea[J]. China Offshore Oil and Gas,2019,31(6):1-12.
[11] 吴俊刚,王昕,柴永波,等. 隐性走滑断裂识别标志及其与油气聚集的关系:以青东—莱州湾构造带为例[J]. 东北石油大学学报,2017,41(3):1-8.
WU J G,WANG X,CHAI Y B,et al. Identification marks of subtle strike-slip faults and its relationship with hydrocarbon accumulation in Qingdong-Laizhouwan tectonic belt[J]. Journal of Northeast Petroleum University,2017,41(3):1-8.
[12] 张中巧,高京华,吴奎,等. 基于高波数曲率属性的隐性走滑断层识别:以辽东湾坳陷旅大构造区为例[J]. 地球物理学进展,2017,32(6):2602-2607. doi: 10.6038/pg20170642
ZHANG Z Q,GAO J H,WU K,et al. Identification of hidden strike-slip fault based on high wavenumber curvature attribute:taking Lüda area in Liaodong Bay Depression as example[J]. Progress in Geophysics,2017,32(6):2602-2607 doi: 10.6038/pg20170642
[13] 穆星,赵海华. 隐性走滑断层的识别方法及其走滑量的计算[J]. 石油物探,2021,60(1):157-166.
MU X,ZHAO H H. Identification of concealed strike-slip fault and estimation of strike-slip offset:a case study of the Jiyang Depression in Bohai Bay Basin[J]. Geophysical Prospecting for Petroleum,2021,60(1):157-166
[14] 张友,南山,王玉秀,等. 隐伏走滑断层特征及其对油气成藏的影响:以渤海海域蓬莱13-14地区为例[J]. 油气地质与采收率,2014,21(6):26-29.
ZHANG Y,NAN S,WANG Y X,et al. Buried strike-slip fault feature and effect on hydrocarbon reservoir forming in Penglai 13-14 area[J]. Petroleum Geology and Recovery Efficiency,2014,21(6):26-29
[15] 汤良杰,万桂梅,周新怀,等. 渤海湾盆地新生代构造演化[J]. 高校地质学报,2008,14(2):191-198.
TANG L J,WAN G M,ZHOU X H,et al. Cenozoic geotectonic evolution of the Bohai Basin[J]. Geological Journal of China Universities,2008,14(2):191-198.
[16] 漆家福,邓荣敬,周心怀,等. 渤海海域新生代盆地中的郯庐断裂带构造[J]. 中国科学:地球科学,2008,38(增刊I):19-29.
QI J F,DENG R J,ZHOU X H,et al. Tanlu Fault zone in Cenozoic basin in Bohai Sea[J]. Science China:Earth Sciences,2008,38(S1):19-29.
[17] DENG J,SU S,NIU Y,et al. A possible model for the lithospheric thinning of North China Craton:evidence from the Yanshanian (Jura-Cretaceous) magmatism and tectonism[J]. Lithos,2007,96(1):22-35.
[18] SUN W,DING X,HU Y H,et al. The golden transformation of the Cretaceous plate subduction in the West Pacific[J]. Earth & Planetary Science Letters,2007,262(3):533-542.
[19] 余一欣,周心怀,徐长贵,等. 渤海海域新生代断裂发育特征及形成机制[J]. 石油与天然气地质,2011,32(2):273-279. doi: 10.11743/ogg20110216
YU Y X,ZHOU X H,XU C G,et al. Characteristics and formation mechanisms of the Cenozoic faults in the Bohai Sea waters[J]. Oil & Gas Geology,2011,32(2):273-279. doi: 10.11743/ogg20110216
[20] 詹润,朱光,杨贵丽,等. 渤海海域新近纪断层成因与动力学状态[J]. 地学前缘,2013,20(4):151-165.
ZHAN R,ZHU G,YANG G L,et al. The genesis of the faults and the geodynamic environment during Neogene for offshore of the Bohai sea[J]. Earth Science Frontiers,2013,20(4):151-165.
[21] 任健,吕丁友,陈兴鹏,等. 渤海东部先存构造斜向拉伸作用及其石油地质意义[J]. 石油勘探与开发,2019,46(3):530-541. doi: 10.11698/PED.2019.03.11
REN J,LYU D Y,CHEN X P,et al. Oblique extension of pre-existing fabrics and its control on oil accumulation in the eastern part of Bohai Sea[J]. Petroleum Exploration and Development,2019,46(3):530-541. doi: 10.11698/PED.2019.03.11
[22] 黄雷. 渤海海域新近纪以来构造特征与演化及其油气赋存效应[D]. 西安:西北大学,2014.
HUANG L. Neogene-Quaternary tectonic reactivity and its control on petroleum accumulation in the Bohai Bay,East China[D]. Xi'an:Northwest University,2014.
[23] SCHREURS G. Fault development and interaction in distributed strike-slip shear zones:an experimental approach[J]. Geological Society,London,Special Publications,2003,210(1):35-52. doi: 10.1144/GSL.SP.2003.210.01.03
[24] SCHREURS G,COLLETTA B. Analogue modelling of faulting in zones of continental transpression and transtension[J]. Geological Society,London,Special Publications,1998,135:59-79. doi: 10.1144/GSL.SP.1998.135.01.05
[25] TIKOFF B,TEYSSIER C. Strain modeling of displacement-field partitioning in transpressional orogens[J]. Journal of Structural Geology,1994,16(11):1575-1588. doi: 10.1016/0191-8141(94)90034-5
[26] FOSSEN H,TIKOFF B. Extended models of transpression and transtension,and application to tectonic settings[J]. Geological Society,London,Special Publications,1998,135(1):15-33. doi: 10.1144/GSL.SP.1998.135.01.02
[27] TEYSSIER C,TIKOFF B,MARKLEY M. Oblique plate motion and continental tectonics[J]. Geology,1995,23(5):447-450. doi: 10.1130/0091-7613(1995)023<0447:OPMACT>2.3.CO;2
[28] WITHJACK M O,JAMISON W R. Deformation produced by oblique rifting[J]. Tectonophysics,1986,126(2):99-124.
[29] PINET N,COBBOLD P R. Experimental insights into the partitioning of motion within zones of oblique subduction[J]. Tectonophysics,1992,206:371-388. doi: 10.1016/0040-1951(92)90388-M
[30] FOSSEN H,TIKOFF B. The deformation matrix for simultaneous simple shearing,pure shearing and volume change,and its application to transpression-transtension tectonics[J]. Journal of Structural Geology,1993,15(3/5):413-422.
-
下载:
图(6)
计量
- 文章访问数: 77
- PDF下载数: 23
- 施引文献: 0