Characteristics of the "Fan-Braid" Complex and Main Controlling Factors of Favorable Reservoir in the Enping Formation, Huizhou 26 Sag, Pearl River Mouth Basin
-
摘要: 珠江口盆地惠州凹陷惠州26洼恩平组发育“扇三角洲-辫状河三角洲”复合沉积体系，并在不同构造的不同沉积演化阶段均发生了典型的“扇-辫”体系转换，转换前后的储层物性条件差异较大，亟需开展深入研究.基于三维地震资料以及岩心分析资料，综合分析了惠州26洼恩平组“扇-辫”复合体系储层差异展布特征及其主控因素，并明确了该区域“南扇北辫、早扇晚辫”的扇-辫演化关系；同时，深入揭示了“优相-改造-火山”为该复合体系有利储层发育的三大主控因素，其中：优质沉积相带是有利储层发育的物质基础，多级断阶搬运改造以及古隆背景下的湖浪淘洗是改善储层物性的关键，而火山物质差异化成岩演化对储层物性起着调控作用.相对而言，惠州26洼恩平组辫状河三角洲相储层物性整体较好，但仍需在埋深下限之上寻找受火山物质影响小的有利储层发育区带；而扇三角洲前缘亚相，还需加强对改造作用的研究并优选强改造作用下的储层.Abstract: A unique "fan delta-braided river delta" composite sedimentary system is developed in Enping Formation, Huizhou 26 depression, the Pearl River Mouth Basin, and typical "fan braid" system transformation has occurred in different sedimentary evolution stages of different structures. The reservoir physical conditions before and after the transformation are quite different, so it is urgent to carry out in-depth research. Based on three-dimensional seismic data and core testing data, this article comprehensively analyzes the differential distribution characteristics and main controlling factors of the "fan-braid" composite system reservoir in the Enping Formation of Huizhou 26 Depression, and clarifies the "fan-braid" evolution relationship of the "southern fan northern braid, early fan late braid" in the region; At the same time, the three main controlling factors for the development of high-quality reservoirs in this composite system, namely "superior facies-transformation-volcano", have been deeply revealed. Among them, high-quality sedimentary facies are the material basis for the development of high-quality reservoirs, transformation of multi-level fault stage transportation, and lake wave washing under the background of ancient uplift are the key to improving reservoir physical properties, while differential diagenetic evolution of volcanic materials plays a regulatory role in reservoir physical properties. Relatively speaking, the overall physical properties of the braided river delta facies reservoirs in the Enping Formation of Huizhou 26 Depression are good, but it is still necessary to search for favorable reservoir development zones that are less affected by volcanic materials above the lower burial depth limit; And for the subfacies of the fan delta front, it is necessary to strengthen the research on the transformation effect and select the reservoirs under strong transformation effect.
-
图 1 惠州凹陷区域位置及综合地层柱状图（a），惠州26洼恩平组二段沉积古地貌图（b）
Fig. 1. Location and Comprehensive Stratigraphic Histogram of Huizhou Depression (a), Sedimentary Paleogeomorphology Map of the Second Member of Enping Formation in Huizhou 26 Depression (b)
图 2 惠州26洼恩平组区域连井（a）及地震相（b）剖面
Fig. 2. Profile of Well Connection (a) and Seismic Facies (b) in the Enping Formation of Huizhou 26 depression
图 3 惠州26洼恩平组恩三四段沉积相（a）、恩二段早期沉积相（b）、恩二段晚期沉积相（c）
Fig. 3. Late sedimentary facies of the second member (a), early sedimentary facies of the second member (b), and sedimentary facies of the third and fourth members (c) of the Enping Formation in the Huizhou 26 depression
图 4 惠州26洼恩平组实测渗透率与埋深关系散点图
Fig. 4. Scatter plot of the relationship between measured permeability and burial depth in the Enping Formation in the Huizhou 26 depression
图 5 惠州26洼恩平组重点井位镜下储层特征
a. A6-2井，3 155.00 m，砂泥混杂近源堆积，成分成熟度低，孔隙发育极差；b. A6-5井，3 132.46 m，分选好，孔隙发育好，K=2 206 mD，φ=17.4%；c. A6-1井，3 235.00 m，长石粒内溶蚀孔隙；d. A6-5井，3 359.50 m，泥质含量较丰富，见少量高岭石等自生粘土矿物，孔隙发育差，K=2.9 mD，φ=11.56%；e. A6-1井，3 234.50 m，见大量高龄石（A）充填粒间，见微孔；f. A6-1井，3 184.00 m，方解石呈连晶状胶结颗粒产出；g. A6-1，3 306.50 m，见粒状黄铁矿，蜂窝状-片状绿/蒙混层以及手风琴状高岭石充填粒间孔隙产出；h. A6-1，3 415.20 m，针叶状绿泥石和次生加大石英夹杂共生并充填粒间孔隙产出；i. A6-7井，3 660.00 m，有机质充填粒间孔隙；j. B5-2井，3 836.00 m，见有机质条带，粗粒为主，凹凸-线接触，孔隙发育差；k. B5-2井，3 770.00 m，凝灰质充填粒间，并见溶蚀；l. B5-2井，3 815.00 m，填隙物凝灰质含量10%，火山岩岩屑相对含量55%；m. A6-1井，3 234.50 m，半塑性安山岩岩屑；n. A6-4井，3 220.00 m，可见玻屑；o. B5-1井，安山岩砾石见磨圆
Fig. 5. Microscopic reservoir characteristics of key well locations in the Enping Formation of Huizhou 26 depression
图 6 恩平组不同沉积相带井壁心实测物性
Fig. 6. Measured physical properties of wellbore cores in different sedimentary facies zones of the Enping Formation
图 7 惠州26-A构造恩平组下段实测孔隙度（a）、实测渗透率（b）及成分成熟度图（c）
Fig. 7. Measured porosity (a), permeability (b), and compositional maturity map (c) of the lower section of the Enping Formation in Huizhou 26-A structure
-
Chen, B. T., Shi, Z. S., Xue, L., et al., 2018. Depositional Models and Lithologic Reservoir Exploration of Sandy Beach-Bar around Buried-Hill: a Case from Galhak Formation in Ruman Region of Melut Basin, South Sudan. Lithologic Reservoirs, 30(6): 37-44(in Chinese with English abstract). Chen, C. M., Shi, H. S., Xu, S. C., et al., 2003. Tertiary Hydrocarbon Accumulation Condition in Pearl River Mouth Basin. Science Press, Beijing(in Chinese). . Du, J. Y., Ding, L., Zhang, X. T., et al., 2017. Exploration Approach and Techniques for the Neogene Lithologic Reservoirs in the Southwestern Huizhou Sag, Pearl River Mouth Basin. Petroleum Geology & Experiment, 39(6): 858-864(in Chinese with English abstract). Du, J. Y., Zhang, X. T., Liu, P., et al., 2021. Classification of Paleogene Source-to-Sink System and Its Petroleum Geological Significance in Zhuyi Depression of Pearl River Mouth Basin. Earth Science, 46(10) : 3690-3706. (in Chinese with English abstract). Jiang, Z. X., Wang, J. H., Zhang, Y. F., 2015. Advances in Beach-Bar research: A Review. Journal of Palaeogeography, 17(4): 427-440(in Chinese with English abstract). Liu, J., Cai, Z., Pang, X. Q., et al., 2022. Quantitative Prediction and Evaluation of Paleogene Favorable Hydrocarbon Accumulation Areas with Multi-Dynamic-Stage-Factor Combination in Lufeng Sag, Pearl River Mouth Basin. Earth Science, 47(7) : 2481-2493(in Chinese with English abstract). Peng, G. R., Zhang, L. L., Xu, X. M., et al., 2023. Source Rock Attribute, Oil Classification and Hydrocarbon Accumulation Main Control Factors of Xijiang Main Sag in Pearl River Mouth Basin. Earth Science, 48(6): 2361-2375(in Chinese with English abstract). Peng, G. R., Zhang, X. T., Xu, X. M., et al., 2022. Important Discoveries and Understandings of Oil and Gas Exploration in Yangjiang Sag of the Pearl River Mouth Basin, Northern South China Sea. China Petroleum Exploration, 24(3): 267-279. (in Chinese with English abstract). Shan, X. L., Yalikun, Rexiti, Liu, P., et al., 2023. Sedimentary Response and Tectonic Significance of Zhuqiong Movement in Xijiang Main Sag, Pearl River Mouth Basin. Journal of Jilin University (Earth Science Edition), 53(2): 329-342(in Chinese with English abstract). Shi, H. S., Dai, Y. D., Liu, L. H., et al., 2015. Geological Characteristics and Basic Model of Distribution and Development of Oil and Gas Reservoirs in Zhuyi Depression, Pearl River Mouth Basin. Acta Petrolei Sinica, 36(S2): 120-133, 155(in Chinese with English abstract). Shi, H. S., Du, J. Y., Mei, L. F., et al., 2020. Huizhou Movement and Its Significance in Pearl River Mouth Basin, China. Petroleum Exploration and Development, 47(3): 483-498(in Chinese with English abstract). Shi, H. S., Gao, Y. D., Liu, J., et al., 2022. Characteristics of Hydrocarbon Source-Migration-Accumulation in Huizhou 26 Sag and Implications of the Major Huizhou 26-6 Discovery in Pearl River Mouth Basin. Oil and Gas Geology, 43(4) : 777-791(in Chinese with English abstract). Shi, H. S., Yu, S. M., Mei, L. F., et al., 2009a. Features of Paleogene Episodic Rifting in Huizhou Fault Depression in the Pearl River Mouth Basin. Natural Gas Industry, 29(1): 35-37, 40, 133(in Chinese with English abstract). Shi, H. S., Zhu, J. Z., Jiang, Z. L., et al., 2009b. Hydrocarbon Resources Reassessment in Zhu Ⅰ Depression, Pearl River Mouth Basin. China Offshore Oil and Gas, 21(1): 9-14(in Chinese with English abstract). Shi, H. S., Shu, Y., Du, J. Y., et al., 2017. Petroleum Geology of Paleogene in Pearl River Mouth Basin. Geological Publishing House, Beijing(in Chinese). Wang, R., Chang, Q. S., Qian, Y. X., et al., 2020. Reservoir Characteristics and Genesis of Shale Oil "Sweet Spots" in Lucaogou Formation, Jimsar Sag, Junggar Basin. Petroleum Geology & Experiment, 42(4): 604-611(in Chinese with English abstract). Wang, X. C., Du, J. Y., Zhang, Q., et al., 2020. Study of Source-Sink System of Transfer Zone Type of Palaeogene in Southwestern Area of the Huizhou Sag and Its Exploration Significance. China Offshore Oil and Gas, 32(5): 44-53(in Chinese with English abstract). Wang, J., Yuan, B., Liu, J., et al., 2022. Genesis and Poredevelopment Characteristics of Permian Lucaogou Migatites, Jimsar Sag, Junggar Basin. Petroleum Geology & Experiment, 44(3): 413-424(in Chinese with English abstract). Xi, K. L., Cao, Y. C., Zhu, R. K., et al., 2015. Rock Types and Characteristics of Tight Oil Reservoir in Permian Lucaogou Formation, Jimsar Sag. Acta Petrolei Sinica, 36(12): 1495-1507(in Chinese with English abstract). Yang, J. P., Zhang, Y. P., Wang, A. X., et al., 2017. Characteristics of Beach Bar Sedimentation in Sha-3 Upper Sub-Interval of Gaojiapu Area in the Baxian Sag. Special Oil & Gas Reservoirs, 24(1): 1-5(in Chinese with English abstract). Zhang, L., Wu, J., Cai, G. F., et al., 2022. Reservoir Characteristics and Main Controlling Factors of Wenchang Formation in Panyu-4 Depression, Pearl River Mouth Basin. Journal of Mineralogy and Petrology, 42(4): 116-127 (in Chinese with English abstract). Zhang, Q., Lü, F. L., He, X. S., et al., 2018. Progress and Enlightenment of Oil and Gas Exploration in the South China Sea in Recent Five Years. China Petroleum Exploration, 23(1): 54-61(in Chinese with English abstract). Zhang, W. B., Yi, H., Zhong, H., et al., 2018. Analysis on the Causes of Failed Wildcat Wells in the Eastern Pearl River Mouth Basin and Its Enlightenment. China Petroleum Exploration, 23(3): 18-27(in Chinese with English abstract). Zhou, F. J., Ding, L., Zhang, Y. X., et al., 2022. Reservoir Characteristics and Main Controlling Factors of High-Quality Reservoirs in Wenchang Formation in Southwestern Huizhou Sag. Sino-Global Energy, 27(9): 30-37(in Chinese with English abstract). Zhou, L. D., Zhang, J. M., Mu, P. F., et al., 2016. Geomorphology and Thin Beach-Bar Sandbody Distribution Law of Paleogene Dongying Formation in a Oilfield, Bohai Bay, China. Journal of Xi'an Shiyou University (Natural Science Edition), 31(6): 32-38(in Chinese with English abstract). Zhu, H. T., Li, S., Liu, H. R., et al., 2016. The Types and Implication of Migrated Sequence Stratigraphic Architecture in Continental Lacustrine Rift Basin: an Example from the Paleogene Wenchang Formation of Zhu Ⅰ Depression, Pearl River Mouth Basin. Earth Science, 41(3): 361-372(in Chinese with English abstract). Zhu, M., Dai, Y. D., Zhu, J. Z., et al., 2017. Geological Characteristics and Accumulation Mechanism of Paleocene Reservoir in Huizhou Sag, Pearl River Mouth Basin. China Offshore Oil and Gas, 29(1): 1-11(in Chinese with English abstract). Zhu, M., Zhang, X. T., Huang, Y. P., et al., 2019. Characteristics and Resource Potential of Source Rocks in Pearl River Mouth Basin. Acta Petrolei Sinica, 40(S1): 53-68(in Chinese with English abstract). Zhu, M., Zhang, X. T., Huang, Y. P., et al., 2019. Characteristics and Resource Potential of Source Rocks in the Pearl River Mouth Basin. Journal of Petroleum, 40(Sup 1): 53-68(in Chinese with English abstract). 陈彬滔, 史忠生, 薛罗, 等, 2018. 古潜山周缘滩坝沉积模式与岩性油藏勘探实践——以南苏丹Melut盆地Ruman地区Galhak组为例. 岩性油气藏, 30(6): 37-44. 陈长民, 施和生, 许仕策, 等, 2003. 珠江口盆地(东部)第三系油气藏形成条件. 北京: 科学出版社. 杜家元, 丁琳, 张向涛, 等, 2017. 珠江口盆地惠州凹陷西南部新近系岩性油气藏勘探思路与关键技术. 石油地质实验, 39(6): 858-863. 杜家元, 张向涛, 刘培, 等, 2021. 珠江口盆地珠一坳陷古近系"源-汇"系统分类及石油地质意义. 地球科学, 46(10): 3690-3706. doi: 10.3799/dqkx.2020.133 姜在兴, 王俊辉, 张元福, 2015. 滩坝沉积研究进展综述. 古地理学报, 17(4): 427-440. 刘军, 蔡哲, 庞雄奇, 等, 2022. 珠江口盆地陆丰凹陷古近系多动力-多期次-多要素复合成藏区定量预测与评价. 地球科学, 47(7): 2481-2493. 彭光荣, 张丽丽, 许新明, 等, 2023. 珠江口盆地西江主洼烃源岩属性、原油分类及成藏主控因素. 地球科学, 48(6): 2361-2375. doi: 10.3799/dqkx.2023.090 彭光荣, 张向涛, 许新明, 等, 2022. 南海北部珠江口盆地阳江凹陷油气勘探重要发现与认识. 中国石油勘探, 24(3): 267-279. 单玄龙, 热西提·亚力坤, 刘培, 等, 2022. 珠江口盆地西江主洼珠琼运动的沉积响应及构造意义. 吉林大学学报(地球科学版), 53(2): 329-342. 施和生, 代一丁, 刘丽华, 等, 2015. 珠江口盆地珠一坳陷油气藏地质特征与分布发育基本模式. 石油学报, 36(2): 120-132. 施和生, 杜家元, 梅廉夫, 等, 2020. 珠江口盆地惠州运动及其意义. 石油勘探与开发, 47(3): 447-461. 施和生, 高阳东, 刘军, 等, 2022. 珠江口盆地惠州26洼"源-汇-聚"特征与惠州26-6大油气田发现启示. 石油与天然气地质, 43(4): 777-791. 施和生, 舒誉, 杜家元, 等, 2017. 珠江口盆地古近系石油地质. 北京: 地质出版社. 施和生, 于水明, 梅廉夫, 等, 2009a. 珠江口盆地惠州凹陷古近纪幕式裂陷特征. 天然气工业, 29(1): 1-5. 施和生, 朱俊章, 姜正龙, 等, 2009b. 珠江口盆地珠一坳陷油气资源再评价. 中国海上油气, 21(1): 9-14. 王剑, 袁波, 刘金, 等, 2022. 准噶尔盆地吉木萨尔凹陷二叠系芦草沟组混积岩成因及其孔隙发育特征. 石油实验地质, 44(3): 413-424. 王然, 常秋生, 钱永新, 等, 2020. 准噶尔盆地吉木萨尔凹陷芦草沟组页岩油"甜点体"储集特征及成因机理. 石油实验地质, 42(4): 604-611. 王绪诚, 杜家元, 张琴, 等, 2020. 惠西南地区古近系转换带型源-汇系统研究及其勘探意义. 中国海上油气, 32(5): 44-53. 葸克来, 操应长, 朱如凯, 等, 2015. 吉木萨尔凹陷二叠系芦草沟组致密油储层岩石类型及特征. 石油学报, 36(12): 1495-1507. 杨剑萍, 张一平, 王爱香, 等, 2017. 霸县凹陷高家堡地区沙三上亚段滩坝沉积特征. 特种油气藏, 24(1): 1-5. 张丽, 吴静, 蔡国富, 等, 2022. 珠江口盆地番禺4洼文昌组储层特征及主控因素. 矿物岩石, 42(4): 116-127. 张强, 吕福亮, 贺晓苏, 等, 2018. 南海近5年油气勘探进展与启示. 中国石油勘探, 23(1): 54-61. 张为彪, 易浩, 钟辉, 等, 2018. 珠江口盆地东部地区预探井失利原因分析及启示. 中国石油勘探, 23(3): 18-27. 周凤娟, 丁琳, 张月霞, 等, 2022. 惠州凹陷西南部文昌组储层特征及有利储层主控因素. 中外能源, 27(9): 30-37. 周连德, 张建民, 穆朋飞, 等, 2016. 渤海A油田东营组古地貌及薄层滩坝发育规律. 西安石油大学学报(自然科学版), 31(6): 32-38. 朱红涛, 李森, 刘浩冉, 等, 2016. 陆相断陷湖盆迁移型层序构型及意义: 以珠Ⅰ坳陷古近系文昌组为例. 地球科学, 41(3) : 361-372. 朱明, 代一丁, 朱俊章, 等, 2017. 珠江口盆地惠州凹陷古近系油藏地质特征及成藏机理. 中国海上油气, 29(1): 1-11. 朱明, 张向涛, 黄玉平, 等, 2019. 珠江口盆地烃源岩特征及资源潜力. 石油学报, 40(S1): 53-68. 朱明, 张向涛, 黄玉平, 等, 2019. 珠江口盆地烃源岩特征及资源潜力. 石油学报, 40(增刊1): 53-68. -
下载:
点击查看大图
计量
- 文章访问数: 671
- HTML全文浏览量: 248
- PDF下载量: 73
- 被引次数: 0
