渤海湾盆地济阳坳陷滑脱构造研究
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摘要
通过地震剖面、钻井资料和油田开发资料对渤海湾盆地济阳坳陷地层、构造变形和岩石物性进行研究.结果表明,渤海湾盆地济阳坳陷南缘和东北部存在滑脱构造,滑脱构造主要沿古生界/太古宇不整合面、石炭系/奥陶系假整合面发育,在古生界内部和新生界也有显示.滑脱构造面是一个断层破碎带,发育碎裂岩和褶皱.构造破碎带附近古生界(石炭系)底部和太古宇(奥陶系)顶部出现破碎带,表现为高孔隙度、高渗透率带.视滑动构造强度的不同古生界底部地层可能出现缺失或重复,后者在地震剖面中表现为反射时间明显增大,相应发育滑脱褶皱、堆垛背斜.由于与油气形成的时间相匹配,滑脱构造为潜山油气的储集和运移提供了有效的储集空间和运移通道,是潜山性油气藏形成的重要条件.
The study with seismic,drilling,and exploitation data on the strata,structural deformation and the physical properties of the rocks shows the existence of décollement structures in the Jiyang Depression. The décollement structures occurred mainly along the unconformity surface between the Cambrian and Archean,and the disconformity surface between the Carboniferous and Ordovician. The décollement structure also developed within Paleozoic and Cenozoic. The décollement structure surface was a fault zone with cataclastic rocks and folds in the seismic profile. Near the décollement structure surface,at the bottom of the Cambrian and the top of the Archean,developed an interjacent fractured zone which shows high porosity and high permeability. The bottom of the Cambrian might be missed or overlapped,and the latter occurred in the seismic profile as double reflection time corresponding to décollement folds and stacking anticline. Because of the synchronisms of oil-gas formation and décollement structure occurrence,the décollement structure afforded the effective shortage space and channel to accumulation of oil-gas,which were the key elements to the buried hill oil-gas pool.
The study with seismic,drilling,and exploitation data on the strata,structural deformation and the physical properties of the rocks shows the existence of décollement structures in the Jiyang Depression. The décollement structures occurred mainly along the unconformity surface between the Cambrian and Archean,and the disconformity surface between the Carboniferous and Ordovician. The décollement structure also developed within Paleozoic and Cenozoic. The décollement structure surface was a fault zone with cataclastic rocks and folds in the seismic profile. Near the décollement structure surface,at the bottom of the Cambrian and the top of the Archean,developed an interjacent fractured zone which shows high porosity and high permeability. The bottom of the Cambrian might be missed or overlapped,and the latter occurred in the seismic profile as double reflection time corresponding to décollement folds and stacking anticline. Because of the synchronisms of oil-gas formation and décollement structure occurrence,the décollement structure afforded the effective shortage space and channel to accumulation of oil-gas,which were the key elements to the buried hill oil-gas pool.
引文
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[2]Jackson J.Faulting,flow and the strength of the continental lithosphere.International Geology Review,2002,44(1):39~61
[3]王椿镛,张先康,吴庆举等.华北盆地滑脱构造的地震学证据.地球物理学报,1994,37(5):613~620Wang C Y,Zhang X K,Wu Q J,et al.Seismic evidence of detachment in North China basin.Chinese J.Geophys.(Acta Geophysica Sinica)(in Chinese),1994,37(5):613~620
[4]汪素云,许忠淮,裴顺云.华北地区上地幔顶部Pn波速度结构及其构造含义.中国科学(D辑),2003,33(Suppl.):91~98Wang S Y,Xu Z H,Pei S Y.The velocity structure and structural implication of Pn waveintopof upper mantlein North China.Science in China(Series D)(in Chinese),2003,33(S):91~98
[5]朱介寿,曹家敏,蔡学林等.东亚及西太平洋边缘海高分辨率面波层析成像.地球物理学报,2002,45(5):646~664Zhu J S,Cao J M,Cai X L,et al.High resolution surface wave tomographyin east Asia and west Pacific Marginal sea.Chinese J.Geophys.(in Chinese),2002,45(5):646~664
[6]嘉世旭,张先康.华北不同构造块体地壳结构及其对比研究.地球物理学报,2005,48(3):611~620Jia S X,Zhang X K.Crustal structure and comparison of different tectonic blocks in North China.Chinese J.Geophys.(in Chinese),2005,48(3):611~620
[7]李志伟,胥颐,郝天珧等.环渤海地区的地震层析成像与地壳上地幔结构.地球物理学报,2006,49(3):797~804Li Z W,Xu Y,Hao T Y,et al.Seismic tomography and velocity structure in the crust and upper mantle around Bohai Sea area.Chinese J.Geophys.(in Chinese),2006,49(3):797~804
[8]张学民,刁桂苓,赵英萍等.华北地区深部地幔剪切波速度结构研究.地球物理学报,2006,49(6):1709~1719Zhang X M,Diao GL,Zhao YP,et al.Study on mantle shear wave velocity structures in North China.Chinese J.Geophys.(in Chinese),2006,49(6):1709~1719
[9]马宗晋,高祥林,宋正范.中国布格重力异常水平梯度图的判读和构造解释.地球物理学报,2006,49(1):106~114Ma ZJ,Gao X L,Song Z F.Analysis and tectonic interpretation to the horizontal-gradient map calculated from Bouguer gravity data in the China mainland.Chinese J.Geophys.(in Chinese),2006,49(1):106~114
[10]Wernicke B.Low-angle normal faults in the Basin and Range Province:nappe tectonics in an extending orogen.Nature,1981,291:645~648
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[12]王桂梁,曹代勇,姜波等.华北南部的逆冲推覆伸展滑覆和重力滑动构造-兼论滑脱构造的研究方法.北京:中国矿业大学出版社,1992Wang GL,Cao D Y,Jiang B,et al.Thrust Nappe,Extensional Gliding Nappe and Gravity Gliding Structures inthe Southern Part of North China(in Chinese).Beijing:Geological Publishing House,1992
[13]郑大海,杨明慧,杨斌谊.伸展盆地拆离构造分析及石油地质意义.西安工程学院学报,2000,20(4):14~16,21Zheng D H,Yang MH,Yang B Y.Analysis of detachment structure in extension basin andthe significance of petroleumgeology.Journal ofXi’an Engineering University(in Chinese),2000,20(4):14~16
[14]赵红格,刘池阳.廊固凹陷的拆离滑脱构造.西北大学学报(自然科学版),2003,33(3):315~319Zhao HG,Liu C Y.Detachment gliding structures of Langgu Sag.Journal of Northwest University(Natural Science Edition)(in Chinese),2003,33(3):315~319
[15]王秉海,钱凯.胜利油区地质研究与勘探实践.东营:石油大学出版社,1992Wang B H,Qian K.The Geology Study and Exploration of Shengli Oilfield(in Chinese).Dongying:The University of Petroleum Publication,1992
[16]陆克政,漆家福,戴俊生等.渤海湾新生代含油气盆地构造模式.北京:地质出版社,1997.1~251Lu KZ,Qi J F,Dai J S,et al.The Structure Style of Oil and Gas Basin in Cenozoic of Bohai Sea Bay(in Chinese).Beijing:Geological Publishing House,1997.1~251
[17]宗国洪,李常宝,施央申等.济阳坳陷构造演化及其大地构造意义.高校地质学报,1999,5(3):275~282Zong G H,Li C B,Shi YS,et al.Evolution of Jiyang Depression and its tectonic implications.Geological Journal ofChina Universities(in Chinese),1999,5(3):275~282
[18]吕朋菊,张明利,朱兴珊.泰山周围下古生界与泰山群不整合面上滑动构造的发现.地质论评,1990,36(5):473~478LPJ,Zhang ML,Zhu X S.Discovery of sliding structures on the plane of unconformity between the Lower Palaeozoic and the Taishan Group in the vicinity of Taishan Mountains.Geol.Rev.(in Chinese),1990,36(5):473~478
[19]李理,张进江,钟大赉等.鲁西地区沿寒武系/太古宇不整合面滑脱构造的主要特征及其形成机制.地质科学,2007,42(2):335~352Li L,Zhang J J,Zhong D L,et al.Main characteristics and the mechunismof the d啨collement structures alongthe Cambrian/Archean unconformity surface in Western Shandong.Chinese Journal of Geology(in Chinese),2007,42(2):335~352
[20]李理,钟大赉.泰山新生代抬升的裂变径迹证据.岩石学报,2006,22(2):457~464Li L,Zhong D L.Fissiontrack evidence of Cenozoic uplifting events of the Taishan Mountain,China.Acta Petrologica Sinica(in Chinese),2006,22(2):457~464
[21]Engbretson D C,Cox A,Gordon R G.Relative motions between oceanic and continental platesinthe Pacific Basin.Geological Society ofAmericaSpecial Paper,1985,206:1~59
[22]朱光,宋传中,王道轩等.郯庐断裂带走滑时代的40Ar/39Ar年代学研究及其构造意义.中国科学(D辑),2001,31(3):250~257Zhu G,Song C Z,Wang D X,et al.Studies on40Ar/39Ar thermochronology of strike-sliptime of the Tan-Lufault zone andtheir tectonic implications.Science in China(Series D)(in Chinese),2001,31(3):250~257
[23]Northrup CJ,Royden L H,Burchfiel B C.Motion of the Pacific plate relative to Eurasia and its potential relation to Cenozoic extrusion alongthe eastern margin of Eurasia.Geology,1995,23:719~722
[24]徐嘉炜,朱光,吕培基等.郯庐断裂带平移年代学研究的进展.安徽地质,1995,5(1):1~12Xu J W,Zhu G,LP J,et al.Progress in stucies on strike-slip Chronology of the Tan-lu Fault Zone.Geology of Anhui(inChinese),1995,5(1):1~12
[25]曾佐勋,曹树钊.赣西北港口-马坳地区多层滑脱构造的基本特征.江西地质,1994,8(4):309~319Zeng Z X,Cao S Z.Basic features of multiple d啨collement structures developed in Gangkou-Ma’ao area,Northwest Jiangxi Province.GeologyofJiangxi(in Chinese),1994,8(4):309~319
[26]贾承造,宋岩,魏国齐等.中国中西部前陆盆地的地质特征及油气聚集.地学前缘,2005,12(3):3~13Jia C Z,Song Y,Wei G Q,et al.Geological features and petroleum accumulation in the foreland basins in central and western China.Earth Science Frontiers(in Chinese),2005,12(3):3~13
[27]刘家铎,孟万斌,周文等.埕岛-胜海潜山带的古岩溶作用.古地理学报,1999,1(4):79~85Liu J D,Meng WB,Zhou W,et al.Palaeoepigenetic dissolution of Chengdao-Shenghai buried hill.Journal of Palaeogeography(in Chinese),1999,1(4):79~85
[28]王长城,施泽进,田亚铭.东营凹陷王古1潜山构造特征与含油气性分析.成都理工大学学报(自然科学版),2006,33(3):262~267Wang C C,Shi ZJ,Tian Y M.Structure characteristics andreservoir-forming conditions of Wanggu1buried hill,Dongying sag,China.Journal ofChengdu University ofTechnology(Science of Technology Edition)(in Chinese),2006,33(3):262~267
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