Abstract：In view of the problems restricting exploration in Linhe Depression for a long time, such as unclear main hydrocarbon-generating sag and accumulation targets, as well as difficult implementation of structures and strata and well location breakthrough, the technical route and key technologies suitable for efficient exploration in new exploration area are put forward. This paper applies the deep target gravity anomaly extraction techno-logy based on multi-density interfacial gravity inversion of middle-to-shallow layers and normalized gravity forward stripping built on various flexible constraint mechanisms to re-understand the geological structure of Linhe Depression and identifies Zhuoxi deep trough as the main hydrocarbon-generating area of Linhe Depression. It is pointed out that the southern slope of Linhe Depression is controlled by the Yellow River fault trough and develops the central fault-barrier buried hill overburden tectonic belt, which has favorable reservoir accumulation conditions with two hydrocarbon sources on both sides and has huge oil and gas exploration potential. The paper proposes and uses time-frequency electromagnetic target reservoir oil and gas detection technologies such as time-frequency electromagnetic simulated annealing resistivity constrained inversion based on well vibration control and polarizability constrained inversion based on fine geoelectric structure model, which improves the electrical resolution of deep targets and the accuracy of oil and gas prediction of target reservoirs and quickly locates the targets in wells JH2x, LH1x, and XH1.It plays a key leading role in the breakthrough of oil and gas exploration in Linhe Depression and provides effective methods and technologies for oil and gas exploration in new areas with low exploration degrees, especially in deep basins.
索孝东, 王泽丹, 石东阳, 杨俊, 李燕丽, 张宇飞. 临河坳陷高效油气勘探综合物探技术及应用[J]. 石油地球物理勘探, 2024, 59(3): 608-619.
SUO Xiaodong, WANG Zedan, SHI Dongyang, YANG Jun, LI Yanli, ZHANG Yufei. Comprehensive geophysical technologies for efficient oil and gas exploration and application in Linhe Depression. Oil Geophysical Prospecting, 2024, 59(3): 608-619.
ZHANG Yiming, ZHANG Ruifeng, WANG Shaochun, et al. Practice and understanding of great discovery in oil and gas exploration in Linhe depression of Hetao basin[J]. China Petroleum Exploration, 2018, 23(5):1-11.张以明, 张锐锋, 王少春, 等. 河套盆地临河坳陷油气勘探重要发现的实践与认识[J].中国石油勘探, 2018, 23(5):1-11.
[2]
ZHANG Yongqian, TENG Jiwen, WANG Qianshen, et al. Crustal structure and the geodynamic process beneath the Hetao basin and adjacent area[J]. Progress in Geophysics, 2013, 28(5):2264-2272.张永谦, 滕吉文, 王谦身, 等. 河套盆地及其邻近地域的地壳结构与深层动力学过程[J].地球物理学进展, 2013, 28(5):2264-2272.
[3]
GUO Zhongming, YU Zhongping. Structural characteristics, mechanism of evolution and petroleum prospecting of Hetao graben system[J]. Petroleum Exploration and Development, 1990,17(3):11-20.郭忠铭, 于忠平. 河套弧形地堑系构造特征和演化机制及其油气勘探[J].石油勘探与开发,1990,17(3):11-20.
[4]
Xiangyong MEN, ZHAO Wenzhi, ZHANG Yan, et al. Characteristics of petroleum geology of Linhe depression in Hetao basin[J]. Natural Gas Industry, 2006, 26(1):20-22.门相勇, 赵文智, 张研, 等. 河套盆地临河坳陷石油地质特征[J].天然气工业, 2006, 26(1):20-22.
[5]
FU Suotang, FU Jinhua, YU Jian, et al. Petroleum geological features and exploration prospect of Linhe depression in Hetao basin, China[J]. Petroleum Exploration and Development, 2018, 45(5):749-762.付锁堂, 付金华, 喻建, 等. 河套盆地临河坳陷石油地质特征及勘探前景[J].石油勘探与开发, 2018, 45(5):749-762.
[6]
ZHAO Chongyuan, GUO Zhongming, HUI Binyao. Hetao arcuate tectonic system and their mechanism of formation and evolution[J].Oil & Gas Geology,1984(4):349-361.赵重远, 郭忠铭, 惠斌耀. 河套弧形构造体系及其形成和演化机制[J].石油与天然气地质,1984(4):349-361.
[7]
SUN Liuyi, PU Renhai, MA Zhanrong, et al. Source rock distribution and exploration prospect of Jilantai sag in Hetao basin, China[J]. Journal of Earth Sciences and Environment, 2018, 40(5):612-626.孙六一, 蒲仁海, 马占荣, 等. 河套盆地吉兰泰凹陷烃源岩展布与勘探潜力[J].地球科学与环境学报, 2018, 40(5):612-626.
[8]
ZHANG Haozhi. Research of Hydrocarbon Accumulation Conditions in Linhe Depression of Hetao Basin[D]. Xi'an Shiyou University, Xi'an, Shaanxi, 2015.张昊祉. 河套盆地临河坳陷油气成藏地质条件分析[D].陕西西安:西安石油大学, 2015.
[9]
ZHAO Mengwei. Characteristics of the fault activity in Hetao basin and its relation with oil and gas[J]. Journal of Northwest University(Natural Science Edition), 1988, (2):85-94.赵孟为. 河套盆地断裂活动的特征及其与油气的关系[J].西北大学学报(自然科学版),1988,(2):85-94.
[10]
XIAO Pengfei, CHEN Shengchang, MENG Lingshun, et al. The density interface inversion of high-precision gravity data[J]. Geophysical and Geochemical Exploration, 2007, 31(1):29-33.肖鹏飞, 陈生昌, 孟令顺, 等. 高精度重力资料的密度界面反演[J].物探与化探, 2007, 31(1):29-33.
[11]
DU Wei, DONG Jinsheng, CHEN Xiangzhong, et al. Calculation of curie depth in Qinghai province based on an improved Parker-Oldenburg interface inversion method[J]. Chinese Journal of Geophysics, 2022, 65(3):1096-1106.杜威, 董金生, 陈祥忠, 等. 基于改进Parker-Oldenburg界面反演方法计算青海省居里面深度[J].地球物理学报, 2022, 65(3):1096-1106.
[12]
WANG Wanyin, PAN Zuoshu. Fast solution of forward and inverse problems for gravity field in a dual interface model[J]. Geophysical Prospecting for Petroleum, 1993, 32(2):81-87, 123.王万银, 潘作枢. 双界面模型重力场快速正反演问题[J].石油物探, 1993, 32(2):81-87, 123.
[13]
HAN Bo, ZHANG Feifei, TIAN Zhenxing. Inversion of density interface with PARKER variable technology in Bohai region by gravity data[J]. Chinese High Technology Letters, 2020, 30(6):637-643.韩波, 张菲菲, 田振兴. 利用PARKER变密度多层界面快速反演技术反演渤海地区密度界面[J].高技术通讯, 2020, 30(6):637-643.
[14]
FENG Juan, MENG Xiaohong, CHEN Zhaoxi, et al. The investigation and application of three-dimensional density interface[J]. Chinese Journal of Geophysics, 2014, 57(1):287-294.冯娟, 孟小红, 陈召曦, 等. 三维密度界面的正反演研究和应用[J].地球物理学报,2014,57(1):287-294.
[15]
GU Wenbin, CHEN Qingli, WANG Yuquan, et al. Part-constrained 3D gravity inversion for the Hubabei buried hill in Raoyang sag[J]. Oil Geophysical Prospecting, 2016, 51(6):1219-1226.谷文彬, 陈清礼, 王余泉, 等. 饶阳凹陷虎8北潜山重力三维松约束反演[J].石油地球物理勘探, 2016, 51(6):1219-1226.
[16]
YAN Liangjun, HU Wenbao, YAO Changli. Filtering enhancement of gravity and magnetic data in the dense ladder-like zone[J]. Progress in Exploration Geophysics, 2006, 29(2):102-103.严良俊, 胡文宝, 姚长利. 重磁资料面积处理中的滤波增强技术与应用[J].勘探地球物理进展,2006,29(2):102-103.
[17]
CHEN Weiying, XUE Guoqiang. Detection capability of grounded electric source TEM for thin layer[J]. Geophysical and Geochemical Exploration,2015,39(4):775-779.陈卫营, 薛国强. 电性源瞬变电磁对薄层的探测能力[J].物探与化探, 2015, 39(4):775-779.
[18]
HE Zhanxiang, YANG Guoshi, CHEN Siqi, et al. Time-frequency electromagnetic(TFEM) method:data acquisition design[J]. Oil Geophysical Prospecting, 2019, 54(4):908-914.何展翔, 杨国世, 陈思琪, 等. 时频电磁 (TFEM) 技术:数据采集参数设计[J].石油地球物理勘探, 2019, 54(4):908-914.
[19]
WANG Zhigang,HE Zhanxiang,QIN Jingcheng,et al. Advances of TFEM technique and its application[J].Oil Geophysical Prospecting,2016,51(S1):144-151.王志刚, 何展翔, 覃荆城, 等. 时频电磁技术的新进展及应用效果[J].石油地球物理勘探, 2016, 51(增刊1):144-151.
[20]
HE Zhanxiang, HU Zuzhi, WANG Zhigang, et al. Time-frequency electromagnetic (TFEM) technique:step-by-step constraint inversion based on artificial fish swarm algorithm[J]. Oil Geophysical Prospecting, 2020, 55(4):898-905.何展翔, 胡祖志, 王志刚, 等. 时频电磁 (TFEM) 技术:数据联合约束反演[J].石油地球物理勘探, 2020, 55(4):898-905.
[21]
SUO Xiaodong, DONG Weibin, SHI Dongyang, et al. Inversion of time-frequency electromagnetic well seismic modeling to probe the inner structure of deep volcanic reservoir:a case study of LD area in Bohai bay basin[J]. Bulletin of Geological Science and Technology, 2021, 40(5):1-10.索孝东, 董卫斌, 石东阳, 等. 时频电磁井震联合建模反演探测深部火山岩储层内幕结构:渤海湾盆地LD地区实例研究[J].地质科技通报,2021,40(5):1-10.
[22]
ZHANG Ruifeng, HE Haiqing, CHEN Shuguang, et al. New understandings of petroleum geology and great discovery in the Linhe depression, Hetao basin[J]. China Petroleum Exploration, 2020, 25(6):1-12.张锐锋, 何海清, 陈树光, 等. 河套盆地临河坳陷石油地质新认识与重大发现[J].中国石油勘探, 2020, 25(6):1-12.
