广域电磁法在辽西地区牛营子凹陷油气资源潜力评价中的应用
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摘要
将广域电磁法应用于辽西地区牛营子凹陷中元古界碳酸盐岩推覆体覆盖区,取得了良好的效果。首次在该地区发现隐伏于碳酸盐岩推覆体之下的厚层北票组烃源岩地层,并得到钻孔验证;揭示了该区侏罗系北票组地层相对于上、下地层显示为低阻的特性,获得了地下电性体真实的电阻率特征;丰富了燕辽沉降带东部的勘探层系,将该地区原有的中新元古界单一勘探层系拓展为中新元古界黑色碳酸盐岩地层和中生界北票组泥岩两套油气勘探层系。
The authors applied the wide field electromagnetic method to conducting work in Mesoproterozoic carbonatite nappe area and achieved good result. It is for the first time that Beipiao source formation was discovered below the carbonatite nappe,which was further proved by well cores. It shows low resistance in comparison with things of its adjacent layers. The actual electronic resistance of underground electric body was also obtained. These discoveries have enriched the exploration strata of the east Yanliao subsiding belt and expanded one Mesoproterozoic exploration stratum to two exploration strata,i.e.,the Mesoproterozoic black carbonate stratum and mudstone stratum.
The authors applied the wide field electromagnetic method to conducting work in Mesoproterozoic carbonatite nappe area and achieved good result. It is for the first time that Beipiao source formation was discovered below the carbonatite nappe,which was further proved by well cores. It shows low resistance in comparison with things of its adjacent layers. The actual electronic resistance of underground electric body was also obtained. These discoveries have enriched the exploration strata of the east Yanliao subsiding belt and expanded one Mesoproterozoic exploration stratum to two exploration strata,i.e.,the Mesoproterozoic black carbonate stratum and mudstone stratum.
引文
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[13]符超,袁博,李学兰.广域电磁法在保靖页岩气勘探中的应用[J].工程地球物理学报,2016,13(4):416-422.Fu C,Yuan B,Li X L,et al.The exploration of wide field electromagnetic mehtod on shale gas[J]. Chinese Journal of Engineering Geophysice,2016,13(4):416-422.
[2] Hu J M,Zhao Y,Liu X W,et al.Early mesozoic deformations of the eastern Yanshan thrust belt,borthern China[J]. Int Earth Sci(Geol Rundsch),2010,99:785-800.
[3] Cope T,Graham S A,Ritts B D,et al. Carboniferous-Permian sedimentation on the northern margin of north China:implications for regional tectonics and climate change[J]. Int Geol Rev,2005,47(3):270-296.
[4] Davis G A,Zheng Y D,Wang C. Mesozoic tectonic evolution of the Yanshan fold and thrust belt,with emphasis on Hebei and Liaoning provinces[J]. North China GSA Mem,2001,194:171-197.
[5] Ma Y S,Cui S Q,Zeng Q L,et al. Yanshanian compression and extension in the Yan-shan area(in Chinese with English abstract)[J]. Geol Bull China,2002,21(4-5):218-223.
[6] Meng Q R,Hu J M,Jin J Q,et al. Tectonics if the Mesozoic wide extensional basin system in the China-Mongolia border region[J].Basin Res,2003.15:397-415.
[7]何继善,李帝铨,戴世坤.广域电磁法在湘西北页岩气探测中的应用[J].石油地球物理勘探,2014,49(5):1006-1012.He J S,Li D Q,Dai S K. Shale gas detection with wide field electromagnetic method in north-western Hunan[J]. Oil Geophysical Prospecting,2014,49(5):1006-1012.
[8]凌帆,朱裕振,周明磊,等.广域电磁法在南华北盆地长山隆起页岩气资源潜力评价中的应用[J].物探与化探,2017,41(2):369-376.Ling F,Zhu Y Z,Zhou M L,et al.Shale gas potential assessment of Changsan uplift area in southern north China basin by using wide field electromagnetic method[J].Geophysical and Geochemical Exploration,2017,41(2):369-376.
[9]曹彦荣,宋涛,韩红庆,等.用广域电磁法勘查深层地热资源[J].物探与化探,2017,41(4):678-683.Cao Y R,Song T,Han H Q,et al. Exploration of deep geothermal energy resources with wide field electromagnetic method[J]. Geophysical and Geochemical Exploration,2017,41(4):678-683.
[10]何继善.广域电磁测深法研究[J].中南大学学报:自然科学版,2010,41(3):1065-1072.He J S.Wide field electromagnetic sounding methods[J].Journal of Central South University:Science and Technology,2010,41(3):1065-1072.
[11]何继善.广域电磁法和伪随机信号电法[M].北京:高等教育出版社,2010.He J S.Wide field electromagnetic mehtod and pseudorandom signal electric method[M].Beijing:Higher Education Press,2010.
[12] Zhang S H,Zhao Y,Song B,et al. Petrogenesis of the Middle Devonian Gushan diorite pluton on the northern margin of the North China block and its tectonic implications[J]. Geol Mag,2010,144(3):553-568.
[13]符超,袁博,李学兰.广域电磁法在保靖页岩气勘探中的应用[J].工程地球物理学报,2016,13(4):416-422.Fu C,Yuan B,Li X L,et al.The exploration of wide field electromagnetic mehtod on shale gas[J]. Chinese Journal of Engineering Geophysice,2016,13(4):416-422.