浅海砂质碎屑流沉积特征与模式: 以莺歌海盆地东方1-1气田莺二段为例

张磊岗; 屈红军; 陈硕; 周伟; 莫冯阳; 韩星

doi:10.19509/j.cnki.dzkq.2021.0614

浅海砂质碎屑流沉积特征与模式: 以莺歌海盆地东方1-1气田莺二段为例

doi: 10.19509/j.cnki.dzkq.2021.0614

张磊岗^{1a, 1b,},
屈红军^{1a, 1b, ,},
陈硕^{1a, 1b},
周伟²,
莫冯阳²,
韩星³

基金项目:

十三五国家科技重大专项课题 2016ZX05026-007

详细信息

作者简介:
张磊岗(1998-), 男, 现正攻读储层沉积学专业硕士学位, 主要从事储层沉积学研究工作。E-mail: 925565675@qq.com

通讯作者:
屈红军(1967-), 男, 教授, 博士生导师, 主要从事储层沉积学研究与教学工作。E-mail: hongjun@nwu.edu.cn

中图分类号: P583
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- 文章访问数: 460
- PDF下载量: 263
- 被引次数: 0
出版历程
- 收稿日期: 2021-02-27

Sedimentary characteristics and model of shallow sea sandy debrisflow: A case study of Ying Ⅱ Member in the Dongfang 1-1 Gas Field, Yinggehai Basin

Zhang Leigang^{1a, 1b
,},
Qu Hongjun^{1a, 1b
, ,},
Chen Shuo^{1a, 1b},
Zhou Wei²,
Mo Fengyang²,
Han Xing³

摘要

摘要: 莺歌海盆地东方气田莺二段发育浅海砂质碎屑流，对其沉积特征与模式的研究具有重要意义。从岩心精细描述入手，结合测井曲线特征、地震剖面、地球化学实验，综合国内外重力流研究进展，确定了研究区浅海砂质碎屑流的岩心、测井、地震相特征，并通过分析研究区沉积背景，进一步探讨了东方气田莺二段ⅡL、ⅢU气组浅海砂质碎屑流的沉积模式。研究结果表明：该区砂质碎屑流的岩心相为富漂浮泥岩碎屑的块状砂岩、"泥包砾"等典型砂质碎屑流特征；测井相上表现为齿化现象十分严重的逆粒序漏斗型及无粒序钟型-漏斗型复合型特征；地震相上表现为中振幅平行席状反射和低频平行-亚平行空白反射特征；剖面上呈席状和平缓透镜状展布。研究厘定了研究区砂质碎屑流为西侧三角洲前缘由于风暴作用引起沉积物滑塌再搬运和北侧红河洪水重力流共同作用形成的浅海砂质碎屑流沉积模式。
- 浅海砂质碎屑流 /
- 沉积特征 /
- “泥包砾” /
- 莺歌海盆地 /
- 东方1-1气田 /
- 莺二段
Abstract: There is shallow sea sandy debris flow in Ying Ⅱ Member in Dongfang 1-1 Gas Field, Yinggehai Basin.Based on the detailed description of cores, combined with well logs, seismic section, geochemical experiments and the research progress of gravity flow, the core, logging and seismic facies characteristics of shallow sea sandy debris flow in the study area are determined.By analyzing the sedimentary background of the study area, the sedimentary mechanism of shallow sea sandy clastic flow in ⅡL and ⅢU gas groups of Ying Ⅱ Member in Dongfang Gas Field is further discussed.It is found that it is characterized massive sandstone rich in mudstone floating debris and "mud-coated intraclasts", which are typical sandy clastic flow characteristics, in core facies, funnel type and bell-funnel type which jugged acutely in logging facies, medium amplitude parallel sheet reflection and low frequency parallel sub parallel blank reflection in seismic facies, sheet and flat lenticular distribution on the section.The results show that the sandy debris flow in the study area is the sedimentary mechanism of the shallow sea sandy debris flow formed by the combined action of the west delta front sediment collapse and re-transportation caused by the storm and the Red River flood gravity flow on the north side.
- shallow sea sandy debris flow /
- sedimentary characteristics /
- "mud-coated intraclasts" /
- Yinggehai Basin /
- Dongfang 1-1 Gas Field /
- Ying Ⅱ Member

HTML全文

图 1 莺歌海盆地和东方1-1气田地质构造图

Figure 1. Location of the Yinggehai Basin and Dongfang 1-1 Gas Field

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图 2 莺歌海盆地东方1-1气田莺二段沉积地层柱状图

Figure 2. Sedimentary stratigraphic column of Ying Ⅱ Member in Dongfang 1-1 Gas Field, Yinggehai Basin

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图 3 DF1-1-11井浮游有孔虫质量分数、古水深曲线及层位标定图^[17]

Figure 3. Percentage contents of planktonic foraminifera, paleobathymetric curve and horizon calibration map of Well DF1-1-11

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图 4 莺歌海盆地三大物源区及东方1-1气田锆石年龄分布图^[35] (n为样品数)

Figure 4. Zircon age distribution of Dongfang 1-1 Gas Field the three provenance areas of Yinggehai Basin

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图 5 莺歌海盆地莺二段物源搬运路径图^[35]

Figure 5. Provenance transport route of Ying Ⅱ Member, Yinggehai Basin

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图 6 莺歌海盆地东方1-1气田莺二段浅海砂质碎屑流沉积构造及沉积背景分析

a.块状砂岩富漂浮泥岩碎屑，3井ⅡL气组，1 297.5 m；b.块状砂岩富漂浮泥岩碎屑，3井ⅢU气组，1 334.2 m；c.砂质碎屑流“泥包砾”结构，3井ⅢU气组，1 336.2 m；d.槽状交错层理，5井ⅡU气组，1 441.2 m；e.风暴序列，3井ⅢU气组，①平行层理，②洼状层理，③包卷层理，④丘状层理；f.生物逃逸构造，2井ⅢU气组，1 347.4 m；g.生物潜穴构造，3井ⅢU气组，1 376.5 m；h.砂质碎屑流“泥包砾”结构，3井ⅢU气组，1 336.2 m；i.槽状交错层理，8井ⅢU气组，1 460.5 m；j.韵律层理，3井ⅢU气组，1 369 m

Figure 6. Sedimentary structure of sandy debris flow and sedimentary background analysis of Ying Ⅱ Member in Dongfang 1-1 Gas Field, Yinggehai Basin

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图 7 莺歌海盆地东方1-1气田莺二段粒度概率曲线

Figure 7. Probabilistic granularity curve of YingⅡ Member in Dongfang 1-1 Gas Field, Yinggehai Basin

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图 8 莺歌海盆地东方1-1气田莺二段井震联合分析

Figure 8. Conjoint analysis of lithologic-seismic-logging of Ying Ⅱ Member in Dongfang 1-1 Gas Field, Yinggehai Basin

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图 9 莺歌海盆地东方1-1气田莺二段测井-地震连井分析

Figure 9. Well connection analysis with logging-seismic of Ying Ⅱ Member in Dongfang 1-1 Gas Field, Yinggehai Basin

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图 10 莺歌海盆地东方1-1气田莺二段ⅢU(a, b)、ⅡL气组(c, d)地震相分布与沉积相

Figure 10. Seismicfacies distribution and sedimentary facies of ⅢU(a, b) and ⅡL(c, d) gas group of Ying Ⅱ Member in Dongfang 1-1 Gas Field, Yinggehai Basin

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图 11 莺歌海盆地东方1-1气田莺二段ⅢU、ⅡL气组浅海砂质碎屑流沉积模式

Figure 11. Shallow sea sandy debris flow sedimentary model ofⅢU and ⅡL gas group of Ying Ⅱ Member in Dongfang 1-1 Gas Field, Yinggehai Basin

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