Reservoir characteristics and hydrocarbon accumulation significance of metamorphic zones of intrusive rocks and surrounding rocks in second member of Paleocene Funing Formation in Qintong Sag, Subei Basin
-
摘要: 火山岩油气藏是油气勘探的重要领域之一。苏北盆地溱潼凹陷侵入岩分布广泛，油气显示活跃，已成为我国东部陆相盆地油气深化勘探和规模增储的重要领域，具备良好的勘探前景。然而，目前针对火山岩对泥页岩围岩储层及其成藏影响的研究较为缺乏，泥页岩围岩变质带能否作为勘探重点领域有待深入评价。为了推动苏北盆地侵入岩围岩变质带新类型油藏勘探，以溱潼凹陷阜二段侵入岩围岩变质带为研究对象，综合岩心、薄片、全岩、测井等资料，系统揭示了泥页岩变质带储层特征，明确了岩浆侵入对阜二段变质带油气成藏的贡献。研究表明，溱潼凹陷阜二段泥页岩受岩浆侵入影响，泥页岩围岩发生蚀变形成环状变质带储层，岩浆的侵入具有明显“增储作用”；变质带储层发育孔隙、裂缝两类储集空间，储层发育程度受侵入岩厚度及烘烤强度控制，岩浆的侵入具有“催熟作用”，同等深度下泥页岩Ro可增加0.4%~0.5%；阜宁组侵入岩形成于吴堡期—三垛期，火成岩侵入形成环状变质带的时间早于油气充注期，具有良好的成藏匹配关系。受岩浆侵入、侵入岩空间分布以及源储匹配关系控制，溱潼凹陷阜二段侵入岩围岩变质带具有源储一体、近源富集的特征，是规模增储的新阵地。Abstract: Volcanic reservoirs play a crucial role in oil and gas exploration. The intrusive rocks in the Qintong Sag of the Subei Basin are widely distributed within active oil and gas deposits, making them a significant area for further exploration and reserve expansion in East China's continental basins. Despite the promising exploration prospects, there is a research gap regarding the impact of volcanics on shale surrounding rock reservoirs and their accumulation potential. It is essential to evaluate whether the shale metamorphic zones could serve as a key exploration target. This study focuses on the metamorphic zones of intrusive rocks and surrounding rocks in the Qintong Sag's second member of the Funing Formation. By integrating core, thin section, whole rock, and well logging data, this work systematically reveals the reservoir characteristics of the mud shale metamorphic zones and defines the contribution of magma intrusion to hydrocarbon accumulation in the metamorphic zones. The results indicate that magma intrusion alters the mud shale of the Funing Formation, resulting in a circular metamorphic zone reservoir with enhanced reservoir properties. This reservoir exhibits two types of spaces, pores and fractures, with development dependent on the thickness and intensity of intrusive rocks. Magma intrusion also leads to a "ripening effect", increasing the Ro of mud shale by 0.4%-0.5% at the same depth. The intrusive rocks of the Funing Formation were formed during the Wubao to Sanduo periods. The intrusion of igneous rocks created a circular metamorphic zone prior to the hydrocarbon charging stage, indicating a favorable accumulation match. Influenced by magma intrusion, spatial distribution of intrusive rocks, and the source-reservoir relationship, the metamorphic zones of intrusive rocks and surrounding rocks in the second member of Funing Formation in the Qintong Sag exhibit characteristics of integrated source-reservoir and near-source enrichment. This presents a new opportunity for significant reservoir enhancement on a large scale.
-
图 1 苏北盆地溱潼凹陷区域构造(a)、地震剖面(b)及综合地层特征(b)
Figure 1. Regional structure(a), seismic profile(b) and comprehensive stratigraphic characteristics(c) of Qintong Sag, Subei Basin
图 2 苏北盆地溱潼凹陷SD1井古新统阜宁组二段侵入岩及围岩岩石学特征
Figure 2. Petrological characteristics of intrusive rocks and surrounding rocks of second member of Paleocene Funing Formation in well SD1 of Qintong Sag, Subei Basin
图 3 苏北盆地溱潼凹陷古新统阜宁组二段侵入岩围岩储集空间特征
Figure 3. Reservoir space characteristics of intrusive rocks and surrounding rocks of second member of Paleocene Funing Formation in Qintong Sag, Subei Basin
图 4 苏北盆地溱潼凹陷古新统阜宁组二段泥页岩变质带储层物性
Figure 4. Physical properties of reservoirs in mud shale metamorphic zone of second member of Paleocene Funing Formation in Qintong Sag, Subei Basin
图 5 苏北盆地溱潼凹陷沙垛地区古新统阜宁组二段不同岩性测井响应特征
Figure 5. Relationship of response characteristics of different lithologies in second member of Paleocene Funing Formation in Shaduo area of Qintong Sag, Subei Basin
图 6 苏北盆地溱潼凹陷SD1井古新统阜宁组二段综合柱状图
Figure 6. Comprehensive histogram of second member of Paleocene Funing Formation in well SD1 of Qintong Sag, Subei Basin
图 7 苏北盆地溱潼凹陷SD1井锆石年龄谐和图
Figure 7. Zircon age harmony diagram of well SD1 in Qintong Sag, Subei Basin
图 8 苏北盆地溱潼凹陷阜宁组侵入岩与变质带储层厚度、孔隙度相关性
Figure 8. Correlation between reservoir thickness and porosity of intrusive rocks and metamorphic zones in Funing Formation, Qintong Sag, Suibei Basin
图 9 苏北盆地溱潼凹陷火山岩相关油藏成藏模式
Figure 9. Accumulation model of volcanic-related oil reservoirs in Qintong Sag, Subei Basin
表 1 苏北盆地溱潼凹陷SD1井古新统阜宁组二段侵入岩上变质带—泥页岩主量元素统计
Table 1. Statistics of principal elements of mud shale in metamorphic zone of intrusive rocks of second member of paleocene Funing Formation, well SD1, Qintong Sag, Subei Basin
% 样品深度(岩性) SiO2 TiO2 Al2O3 Fe2O3 MnO MgO CaO Na2O K2O P2O5 LOI 3 520 m(正常泥页岩) 65.79 0.235 6.79 3.28 0.190 1.12 9.56 0.77 0.82 0.138 12.23 3 522 m(正常泥页岩) 49.95 0.421 9.92 3.91 0.123 2.83 13.95 1.83 1.31 0.164 14.32 3 545 m(蚀变泥页岩) 58.03 0.742 16.84 7.11 0.000 0.11 1.63 9.24 2.58 0.127 3.59 3 546 m(蚀变泥页岩) 59.64 0.458 12.72 5.57 0.121 3.08 9.00 7.43 1.14 0.150 0.79 3 546.6 m(蚀变泥页岩) 45.48 0.227 15.47 3.16 0.210 3.74 26.77 0.28 0.02 0.236 4.70 
下载: 导出CSV
表 2 苏北盆地溱潼凹陷SD1井侵入岩—变质带—正常泥页岩碳、氧同位素分析结果
Table 2. C and O isotopes of intrusive rock, metamorphic zone and normal mud shale in well SD1 in Qintong Sag, Subei Basin
样品深度/m 矿物 δ18OSMOW/‰ δ13CVPDB/‰ 备注 3 520.0 泥页岩中方解石 19.70 0.18 正常泥页岩 3 522.0 泥页岩中方解石 20.09 0.02 正常泥页岩 3 546.6 蚀变泥页岩中方解石 17.57 -16.66 上蚀变带 3 550.2 辉绿岩中方解石 16.04 -13.37 辉绿岩 3 587.8 橄榄辉长岩中方解石 15.78 -13.20 辉绿岩 3 595.5 橄榄辉长岩中方解石 17.03 -14.55 辉绿岩 3 618.4 热变质泥岩中方解石 19.79 -15.72 下蚀变带
下载: 导出CSV
-
[1] 唐华风, 王璞珺, 边伟华, 等. 火山岩储层地质研究回顾[J]. 石油学报, 2020, 41(12): 1744-1773. doi: 10.7623/syxb202012026TANG Huafeng, WANG Pujun, BIAN Weihua, et al. Review of volcanic reservoir geology[J]. Acta Petrolei Sinica, 2020, 41(12): 1744-1773. doi: 10.7623/syxb202012026 [2] 江怀友, 鞠斌山, 江良冀, 等. 世界火成岩油气勘探开发现状与展望[J]. 特种油气藏, 2011, 18(2): 1-6. doi: 10.3969/j.issn.1006-6535.2011.02.001JIANG Huaiyou, JU Binshan, JIANG Liangji, et al. Current situation and prospect of global igneous reservoir exploration and development[J]. Special Oil & Gas Reservoirs, 2011, 18(2): 1-6. doi: 10.3969/j.issn.1006-6535.2011.02.001 [3] 李素华, 贾霍甫, 胡昊, 等. 四川盆地井研地区火山岩岩相类型及储层分布[J]. 特种油气藏, 2022, 29(6): 39-46. https://www.cnki.com.cn/Article/CJFDTOTAL-TZCZ202206005.htmLI Suhua, JIA Huofu, HU Hao, et al. Lithofacies types and reservoir distribution of volcanic rocks in Jingyan area, Sichuan Basin[J]. Special Oil & Gas Reserviors, 2022, 29(6): 39-46. https://www.cnki.com.cn/Article/CJFDTOTAL-TZCZ202206005.htm [4] 熊伟, 王越, 熊峥嵘, 等. 准噶尔盆地石北凹陷岛弧环境下火山—沉积建造特征及源储发育模式: 以石炭系姜巴斯套组为例[J]. 石油实验地质, 2023, 45(4): 656-666. doi: 10.11781/sysydz202304656XIONG Wei, WANG Yue, XIONG Zhengrong, et al. Characteristics of volcanic-sedimentary formations and developmental patterns of source and reservoir rocks in an island arc environment of Shibei Sag, Junggar Basin: taking the Carboniferous Jiangbasitao Formation as an example[J]. Petroleum Geology & Experiment, 2023, 45(4): 656-666. doi: 10.11781/sysydz202304656 [5] 孙林, 邹信波, 李旭光, 等. 珠江口盆地惠州凹陷火山岩酸化可行性[J]. 油气地质与采收率, 2022, 29(2): 145-154. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS202202018.htmSUN Lin, ZOU Xinbo, LI Xuguang, et al. Feasibility study on acidification of volcanic rocks in Huizhou Sag, Pearl River Mouth Basin[J]. Petroleum Geology and Recovery Efficiency, 2022, 29(2): 145-154. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS202202018.htm [6] 张莹, 曲丽丽, 朱露, 等. SVM算法在渤海湾盆地南堡凹陷火山岩储层流体预测中的应用[J]. 油气藏评价与开发, 2023, 13(2): 181-189. https://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ202302006.htmZHANG Ying, QU Lili, ZHU Lu, et al. Application of SVM algorithm in fluid prediction of volcanic reservoirs in Nanpu Sag, Bohai Bay Basin[J]. Petroleum Reservoir Evaluation and Development, 2023, 13(2): 181-189. https://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ202302006.htm [7] 刘明, 薛野, 刘田田, 等. 苏北盆地溱潼凹陷三维地震勘探进展及下步攻关方向[J]. 油气藏评价与开发, 2023, 13(2): 163-172. https://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ202302004.htmLIU Ming, XUE Ye, LIU Tiantian, et al. Progress and direction of 3D seismic exploration in Qintong Sag of Subei Basin[J]. Petroleum Reservoir Evaluation and Development, 2023, 13(2): 163-172. https://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ202302004.htm [8] 邓玉胜, 王蕴, 朱桂生, 等. 松辽盆地南部长岭断陷火成岩特征及其对油气藏的控制[J]. 中国石油勘探, 2003, 8(3): 31-37. doi: 10.3969/j.issn.1672-7703.2003.03.007DENG Yusheng, WANG Yun, ZHU Guisheng, et al. The feature of igneous rock and its controlling on reservoir in the Changling Fault-Depression of the south of Songliao Basin[J]. China Petroleum Exploration, 2003, 8(3): 31-37. doi: 10.3969/j.issn.1672-7703.2003.03.007 [9] 金春爽, 乔德武, 淡伟宁. 渤海湾盆地中、新生代火山岩分布及油气藏特征[J]. 石油与天然气地质, 2012, 33(1): 19-29. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201201004.htmJIN Chunshuang, QIAO Dewu, DAN Weining. Meso-Cenozoic volcanic rock distribution and reservoir characteristics in the Bohai Bay Basin[J]. Oil & Gas Geology, 2012, 33(1): 19-29. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201201004.htm [10] 王金友, 张世奇, 赵俊青, 等. 渤海湾盆地惠民凹陷临商地区火山岩储层特征[J]. 石油实验地质, 2003, 25(3): 264-268. doi: 10.3969/j.issn.1001-6112.2003.03.008WANG Jinyou, ZHANG Shiqi, ZHAO Junqing, et al. Characte-ristics of volcanic rock reservoirs in the Linshang area of the Huimin Sag[J]. Petroleum Geology & Experiment, 2003, 25(3): 264-268. doi: 10.3969/j.issn.1001-6112.2003.03.008 [11] 许廷生. 渤海湾盆地岩浆侵入活动与油气成藏特征[J]. 特种油气藏, 2021, 28(1): 81-85. doi: 10.3969/j.issn.1006-6535.2021.01.011XU Tingsheng. Research on the magmatic intrusion and oil and gas reservoir forming characteristics in Bohai Bay Basin[J]. Special Oil & Gas Reservoirs, 2021, 28(1): 81-85. doi: 10.3969/j.issn.1006-6535.2021.01.011 [12] 王保如, 祁德清, 汪恩华, 等. 苏北盆地辉绿岩、蚀变带特征及其与油气的关系[J]. 西安石油学院学报(自然科学版), 2001, 16(6): 5-7. doi: 10.3969/j.issn.1673-064X.2001.06.002WANG Baoru, QI Deqing, WANG Enhua, et al. Characteristics of the diabase and altered zone in BXP area of Subei Basin and relationship between the diabase and the formation of hydrocarbon reservoir[J]. Journal of Xi'an Petroleum Institute (Natural Science Edition), 2001, 16(6): 5-7. doi: 10.3969/j.issn.1673-064X.2001.06.002 [13] 姚洪生, 张勇, 蒋永平, 等. 苏北盆地溱潼凹陷新生代侵入岩蚀变带油藏地质特征[J]. 石油实验地质, 2014, 36(2): 153-159. https://www.cnki.com.cn/Article/CJFDTOTAL-SYSD201402005.htmYAO Hongsheng, ZHANG Yong, JIANG Yongping, et al. Geologic features of reservoirs in Cenozoic intrusive rock metamorphic zone, Qintong Sag, northern Jiangsu Basin[J]. Petroleum Geology & Experiment, 2014, 36(2): 153-159. https://www.cnki.com.cn/Article/CJFDTOTAL-SYSD201402005.htm [14] 夏文谦, 朱祥, 金民东, 等. 川北地区上二叠统吴家坪组火山碎屑岩油气藏储层特征及主控因素[J]. 石油实验地质, 2023, 45(2): 307-316. doi: 10.11781/sysydz202302307XIA Wenqian, ZHU Xiang, JIN Mindong, et al. Characteristics and controlling factors of volcanic clastic rock reservoirs in Wujiaping Formation of Upper Permian in northern Sichuan Basin[J]. Petroleum Geology & Experiment, 2023, 45(2): 307-316. doi: 10.11781/sysydz202302307 [15] 王绪诚, 陈维涛, 何叶, 等. 珠江口盆地惠西南地区古新世火山机构对有利储层的控制作用[J]. 石油实验地质, 2022, 44(3): 466-475. doi: 10.11781/sysydz202203466WANG Xucheng, CHEN Weitao, HE Ye, et al. Control of Paleocene volcanic edifice on favorable reservoirs: a case study of the southwestern Huizhou Sag, Pearl River Mouth Basin[J]. Petroleum Geology & Experiment, 2022, 44(3): 466-475. doi: 10.11781/sysydz202203466 [16] 杨双, 李忠博, 闫相宾, 等. 火山岩圈闭识别描述方法及其应用[J]. 石油实验地质, 2021, 43(3): 540-548. doi: 10.11781/sysydz202103540YANG Shuang, LI Zhongbo, YAN Xiangbin, et al. Method of identi-fying and characterizing of volcanic traps and its application[J]. Petroleum Geology & Experiment, 2021, 43(3): 540-548. doi: 10.11781/sysydz202103540 [17] 薛成刚, 李春荣. 高邮凹陷北斜坡火成岩对储层的影响[J]. 断块油气田, 2013, 20(1): 43-46. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT201301012.htmXUE Chenggang, LI Chunrong. Influence of igneous rock on reservoirs in northern slope of Gaoyou Depression[J]. Fault-Block Oil & Gas Field, 2013, 20(1): 43-46. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT201301012.htm [18] 吴峻, 陈孔全, 张锋, 等. 苏北盆地溱潼凹陷浅成侵入岩接触变质带储层特征及控制因素[J]. 石油实验地质, 2018, 40(3): 323-329. doi: 10.11781/sysydz201803323WU Jun, CHEN Kongquan, ZHANG Feng, et al. Reservoir characteristics and controlling factors in the contact metamorphic zone of hypabyssal intrusive rocks in the Qintong Sag, northern Jiangsu Basin[J]. Petroleum Geology & Experiment, 2018, 40(3): 323-329. doi: 10.11781/sysydz201803323 [19] 邰浩, 余文端, 臧素华, 等. 苏北盆地溱潼凹陷古近系戴一段油气富集规律[J]. 油气藏评价与开发, 2023, 13(6): 844-854. https://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ202306016.htmTAI Hao, YU Wenduan, ZANG Suhua, et al. Hydrocarbon enrichment regularity of the first member of Paleogene Dainan Formation in Qintong Sag, Subei Basin[J]. Petroleum Reservoir Evaluation and Development, 2023, 13(6): 844-854. https://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ202306016.htm [20] 昝灵, 彭冰璨, 骆卫峰, 等. 溱潼凹陷火山岩油藏成藏特征研究[J]. 非常规油气, 2017, 4(5): 1-9. doi: 10.3969/j.issn.2095-8471.2017.05.001ZAN Ling, PENG Bingcan, LUO Weifeng, et al. Study on accumulation characteristics of volcanic reservoir of Qintong Depression in Subei Basin[J]. Unconventional Oil & Gas, 2017, 4(5): 1-9. doi: 10.3969/j.issn.2095-8471.2017.05.001 [21] 叶绍东, 任红民, 李储华, 等. 苏北盆地新生代侵入岩分布特征及地质意义[J]. 地质论评, 2010, 56(2): 269-274. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLP201002014.htmYE Shaodong, REN Hongmin, LI Chuhua, et al. The distribution of Cenozoic intrusive rocks in the North Jiangsu Basin and its geological significances[J]. Geological Review, 2010, 56(2): 269-274. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLP201002014.htm [22] 冀国盛, 戴俊生, 马欣本, 等. 苏北盆地闵北地区阜宁组一、二段火山岩的储集特征[J]. 石油与天然气地质, 2002, 23(3): 289-292. doi: 10.3321/j.issn:0253-9985.2002.03.019JI Guosheng, DAI Junsheng, MA Xinben, et al. Reservoir characte-ristics for volcanic rocks from member Ⅰ, Ⅱ of Funing Formation in northern Minbei region in Subei Basin[J]. Oil & Gas Geology, 2002, 23(3): 289-292. doi: 10.3321/j.issn:0253-9985.2002.03.019 [23] 刘君兰, 张金川, 王胜, 等. 辉绿岩床侵入对围岩有机质热演化影响的模拟研究: 以赵家山下马岭组剖面为例[J]. 油气藏评价与开发, 2022, 12(1): 255-264. https://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ202201022.htmLIU Junlan, ZHANG Jinchuan, WANG Sheng, et al. Numerical simulation of influence of diabase bed intrusion on thermal evolution of organic rich host rock: a case study of Zhaojiashan Xiamaling Formation[J]. Petroleum Reservoir Evaluation and Development, 2022, 12(1): 255-264. https://www.cnki.com.cn/Article/CJFDTOTAL-KTDQ202201022.htm [24] 王凯, 刘汇川, 任威威, 等. 新生代辉绿岩侵入对围岩物性的影响: 以苏北盆地洋心次凹为例[J]. 现代地质, 2022, 36(6): 1563-1573. https://www.cnki.com.cn/Article/CJFDTOTAL-XDDZ202206011.htmWANG Kai, LIU Huichuan, REN Weiwei, et al. Influence of Cenozoic diabase intrusion on reservoir properties of mudstone wall rocks in the Yangxin Sub-Depression, Subei Basin[J]. Geoscience, 2022, 36(6): 1563-1573. https://www.cnki.com.cn/Article/CJFDTOTAL-XDDZ202206011.htm [25] 牛嘉玉, 张映红. 渤海湾盆地侵入岩—外变质带油气藏类型及成藏条件[J]. 特种油气藏, 2003, 10(1): 22-26. https://www.cnki.com.cn/Article/CJFDTOTAL-TZCZ200301002.htmNIU Jiayu, ZHANG Yinghong. Reservoir types and forming conditions in intrusion rock-exomorphic zone of Bohai Gulf Basin[J]. Special Oil & Gas Reservoirs, 2003, 10(1): 22-26. https://www.cnki.com.cn/Article/CJFDTOTAL-TZCZ200301002.htm [26] 云露, 何希鹏, 花彩霞, 等. 苏北盆地溱潼凹陷古近系陆相页岩油成藏地质特征及资源潜力[J]. 石油学报, 2023, 44(1): 176-187. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB202301005.htmYUN Lu, HE Xipeng, HUA Caixia, et al. Accumulation characteristics and resource potential of Paleogene continental shale oil in Qintong Sag of Subei Basin[J]. Acta Petrolei Sinica, 2023, 44(1): 176-187. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB202301005.htm [27] 昝灵, 白鸾羲, 印燕铃, 等. 苏北盆地溱潼凹陷古近系阜宁组二段页岩油基本特征及成因分析[J]. 石油实验地质, 2023, 45(2): 356-365. doi: 10.11781/sysydz202302356ZAN Ling, BAI Luanxi, YIN Yanling, et al. Basic characteristics and genesis analysis of shale oil in the second member of Paleogene Funing Formation in Qintong Sag, Subei Basin[J]. Petroleum Geology & Experiment, 2023, 45(2): 356-365. doi: 10.11781/sysydz202302356 -
计量
- 文章访问数: 312
- HTML全文浏览量: 212
- PDF下载量: 38
- 被引次数: 0
苏公网安备32021102000780号