山东济阳坳陷桩海地区井旁构造应力场分析
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摘要
山东济阳坳陷构造特征复杂,利用地震勘探方法预测潜山裂缝的难度大。由于构造裂缝主要受控于构造应力场,从构造应力场分析入手预测构造裂缝发育规律是十分有效的手段。利用电阻率成像测井资料对济阳坳陷桩海地区井下构造应力场进行研究,研究结果表明:该区井下应力场十分复杂,井旁构造受断层影响较大,各层段地层倾向和裂缝方位变化较大;桩海北部地区现今最大水平主应力的方向为北西西—南东东向,桩海南部地区现今最大水平主应力的方向为北东东—南西西向。
The structures of Jiyang depression are very complex, so it is difficult to predict the fractures deve-(loped) in the buried hill by seismic data.The fractures are always controlled by the tectonic stress distribution;therefore,to study the paleo-stress field is a useful method to predict the fractures.In this study,the borehole tectonic stress of Zhuanghai area was analyzed by FMI images.It was found that the directions of stress fields were variable and the structures near the boreholes were influenced by the faults.The dipping direction of the strata and fractures changed intensively.The present direction of the principle horizontal stress is NWW-SEE in the north of Zhuanghai area,while the direction is NEE-SWW in the south area.
The structures of Jiyang depression are very complex, so it is difficult to predict the fractures deve-(loped) in the buried hill by seismic data.The fractures are always controlled by the tectonic stress distribution;therefore,to study the paleo-stress field is a useful method to predict the fractures.In this study,the borehole tectonic stress of Zhuanghai area was analyzed by FMI images.It was found that the directions of stress fields were variable and the structures near the boreholes were influenced by the faults.The dipping direction of the strata and fractures changed intensively.The present direction of the principle horizontal stress is NWW-SEE in the north of Zhuanghai area,while the direction is NEE-SWW in the south area.
引文
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[14]谢富仁,崔效锋,赵建涛,等.中国大陆及邻区现代构造应力场分区[J].地球物理学报,2004,47(4):54-62.
[2]吴时国,王秀玲,季玉新,等.3D MOVE构造裂缝预测技术在古潜山的应用研究[J].中国科学(D辑),2004,39(9):818-824.
[3]曲春燕,陈国光,徐杰.辽河油田大民屯凹陷井壁崩落法地应力测量[J].地震地质,2004,26(2):318-324.
[4]党龙梅,李行船,李冬梅,等.商741块火成岩构造应力场与裂缝系统研究[J].特种油气藏,2003,10(1):106-111.
[5]肖立志.核磁共振成像测井与岩石核磁共振及其应用[M].北京:科学出版社,1997.
[6]Esm ersoy C,Chang C,Kane M R,et al.Son ic imaging:a toolfor h igh-resolution reservoir description[M]//Extended Ab-stracts of 67thAnnual InternationalM eeting of the Society of Ex-ploration Geophysicists.Dallas:The Society of Exploration Geo-physicists,1997:250-255.
[7]陈韶生,张吉昌,鲍志东.辽河盆地大民屯凹陷变质岩潜山油藏储集层构造裂缝形成时期的探讨[J].现代地质,2005,19(增刊):121-124.
[8]刘景武.多极子声波测井资料在辽河油田硬地层中的应用[J].现代地质,2004,18(3):378-382.
[9]W u S,Yu Z,Zhang R,et al.M esozoic-Cenozoic tecton ic evo-lution of the Zhuanghai area,Bohai Bay basin,east Ch ina:theapplication of balanced cross sections[J].Journal of GeophysicsEngineering,2005,(2):158-168.
[10]谭明友,刘福贵,董臣强,等.埕北30潜山构造演化与油气富集规律研究[J].石油地球物理勘探,2002,37(2):134-138.
[11]刘宁,王锋,王伟庆.渤海湾盆地埕北凹陷南部桩东凹陷西部下第三系沉积特征分析[J].现代地质,2005,19(增刊):49-53.
[12]侯方辉,李三忠,王金铎,等.济阳坳陷桩海地区的古潜山断裂[J].海洋地质与第四纪地质,2005,25(3):69-74.
[13]张克鑫,漆家福,马宝军,等.济阳坳陷桩海地区构造演化特征研究[J].西安石油大学学报(自然科学版),2005,20(3):40-43.
[14]谢富仁,崔效锋,赵建涛,等.中国大陆及邻区现代构造应力场分区[J].地球物理学报,2004,47(4):54-62.
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