|
|
The application of wide field electromagnetic method to the oil and gas exploration of Niuyingzi sag in Liaoxi area |
Qiu-Shi SUN1, Jie YUAN2, Wen-Ming ZONG1, Shou-Liang SUN1, Xiao-Yong GAO1, Heng ZHU1, Tao ZHANG1, Nan JU1 |
1. Shenyang Center of Geological Survey, CGS, Shenyang 110034, China 2. No. 814 Geological Party, East China Geological Exploration Bureau of Jiangsu Nonferrous Metals, Nanjing 210007, China |
|
|
Abstract 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.
|
Received: 25 June 2018
Published: 20 February 2019
|
|
|
|
|
|
Geological sketch of Niuyingzi depression 1—line position;2—normal fault;3—reverse fault;4—thrust fault;5—intrusive rock;6—Quaternary;7—Cretaceous Yixian formation;8—Jurassic Tiaojishan formation;9—Jurassic Dengzhangzi formation;10—Jurassic Haifanggou formation;11—Permian Shihezi formation;12—Cambrian-Ordovician strata;13—Mesoproic-Neoproterozoic strata
|
地-电分层 | 代号 | 主要岩性 | 标本数 | 电阻率范围/(Ω·m) | 电性特征 | 侏罗系土城子组 | J3t | 粉砂岩、含砾粉砂岩 | 37 | 102~172 | 低阻 | 侏罗系髫髻山组 | J2t | 安山岩、角砾熔岩 | 62 | 562~846 | 次低阻 | 侏罗系海房沟组 | J2h | 复成分砾岩、砂岩、页岩夹煤线 | 32 | 163~220 | 低阻 | 侏罗系北票组 | J1b | 泥岩、砂岩夹煤线 | 27 | 110~130 | 低阻 | 奥陶系 | O | 灰岩、白云岩 | 29 | 5100~9150 | 高阻 | 寒武系 | ∈ | 泥晶灰岩 | 24 | 2073~6304 | 次高阻 | 青白口系 | Qb | 灰岩、白云岩 | 50 | 6367~13497 | 高阻 | 洪水庄组 | Jxh | 粉砂质泥岩、钙质页岩 | 32 | 192~231 | 低阻 | 长城系—蓟县系雾迷山组 | Ch-Jxw | 白云岩、灰岩、砂岩 | 185 | 1496~9672 | 次高阻 | 太古宇 | Ar | 斜长角闪岩、变粒岩、片麻岩 | 67 | 3208~3906 | 次高阻层 | 岩体 | γ | 花岗岩 | 65 | 5226 | 次高阻体 |
|
|
|
The wide filed apparent resistivity curve comparison(a) and the abnormal amplitude (b)
|
|
The apparent resistivity inversion profile of wide fieldelectromagnetic sounding of L1 line in Niuyingzi depression 1—thrust fault;2—stratigraphic boundary;3—granitic pluton;4—Changchengian;5—Jixianian;6—Jixianian Gaoyuzhuang formation;7—Jixianian Yangzhuang formation;8—Jixianian Wumishan formation;9—Cambrian;10—Ordovician;11—Jurassic Beipiao formation;12—Jurassic Haifanggou formation
|
|
The apparent resistivity inversion profile of wide fieldelectromagnetic sounding of L2 line in Niuyingzi depression
|
|
The stratigraphic section of LLD1 well
|
[1] |
孙求实, 郜晓勇, 宗文明 . 凌源—宁城盆地中元古代早期盆地构造演化过程研究[J]. 地质评论, 2017,63(S0):133-135.
|
[1] |
Sun Q S, Gao X Y, Zong W M . Study on tetonic evolution process of early mesoproterozoic in Lingyuan—Ningcheng basin[J]. Geological Review, 2017,63(S0):133-135.
|
[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.
|
[7] |
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.
|
[8] |
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.
|
[9] |
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.
|
[10] |
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.
|
[11] |
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.
|
[13] |
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.
|
[1] |
ZHU Yun-Qi, LI Di-Quan, WANG Jin-Hai. Wide field electromagnetic data processing and interpretation platform based on MySQL[J]. Geophysical and Geochemical Exploration, 2021, 45(4): 1030-1036. |
[2] |
WANG Guo-Jian, LU Li, YANG Jun, LI Ji-Peng, REN Chun, TANG Jun-Hong, LI Wu. The soil gas method and its application to geochemical prospecting for oil and gas[J]. Geophysical and Geochemical Exploration, 2021, 45(1): 11-17. |
|
|
|
|