鄂尔多斯盆地富县地区二叠系下石盒子组1段源—汇格局与砂体分布

方旭蕾; 王琳霖; 齐荣; 高辉; 杨飞; 刘璐; 苏娟

doi:10.11781/sysydz2025020284

鄂尔多斯盆地富县地区二叠系下石盒子组1段源—汇格局与砂体分布

doi: 10.11781/sysydz2025020284

方旭蕾^1,,
王琳霖²,
齐荣³,
高辉³,
杨飞³,
刘璐³,
苏娟²

1.
长江大学地球科学学院，武汉 430100
2.
中国石化石油勘探开发研究院，北京 102206
3.
中国石化华北油气分公司勘探开发研究院，郑州 450006

基金项目:

中国石化科技部项目“鄂南富县区块古生界天然气成藏规律与精细评价” P22070

详细信息

作者简介:
方旭蕾(1990—)，女，博士生，从事地球物理—地质综合评价研究。E-mail: 1013229398@qq.com

中图分类号: TE122.2
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- 文章访问数: 28
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- 被引次数: 0
出版历程
- 收稿日期: 2024-02-21
- 修回日期: 2025-02-08
- 刊出日期: 2025-03-28

Source-to-sink pattern and sand body distribution in the first member of Permian Lower Shihezi Formation in Fuxian area, Ordos Basin

1.
College of Earth Science, Yangtze University, Wuhan, Hubei 430100, China
2.
Petroleum Exploration & Production Research Institute, SINOPEC, Beijing 102206, China
3.
Research Institute of Exploration and Development, Huabei Oilfield Company, SINOPEC, Zhengzhou, Henan 450006, China

摘要

摘要: 鄂尔多斯盆地东南部富县地区作为上古生界天然气勘探的重要接替阵地，其主力勘探层段——二叠系下石盒子组1段(盒1段)受复杂构造—沉积作用影响显著，导致沉积充填的源—汇分布格局与砂体分布规律仍不明确。因此，深入开展多物源体系下的沉积充填交汇关系、砂体成因类型及其分布规律研究对该地区天然气的高效勘探与规模增储具有重要意义。基于野外露头和岩心观察，结合岩石薄片、重矿物以及测井资料的综合分析，系统开展了富县地区盒1段沉积物源分析，并总结了砂体成因类型、结构特征及其分布与演化规律。富县地区盒1段沉积期主要发育南部陆源碎屑充填区及南北陆源碎屑混源充填区。在盒1段共识别出9种岩相类型和3类岩相组合，其中主要砂体成因类型为辫状河相辫状河道充填和心滩砂坝两类。沿物源方向，岩相组合由指示南物源区下切、加积、侧积沉积充填作用逐渐演化为南北物源混源区侧积充填作用。盒1段经历了从沉积初始阶段洪水期富陆源粗碎屑供给到沉积晚期枯水期泥质沉积为主的沉积演化过程。其中，盒1-1、盒1-3小层沉积期是辫状复合河道砂体发育的有利阶段，尤其是盒1-1小层沉积期，优势砂体主要发育于富县地区中东部南物源沉积充填区及北部的物源混合充填的主力区。
- 重矿物 /
- 岩相类型 /
- 砂体成因 /
- 源汇格局 /
- 盒1段 /
- 二叠系 /
- 富县地区 /
- 鄂尔多斯盆地
Abstract: The Fuxian area in the southeastern Ordos Basin is a crucial area for natural gas exploration in the Upper Paleozoic. The primary exploration target, the first member of the Permian Shihezi Formation (He 1 Member), is significantly influenced by complex tectonic and sedimentary processes, resulting in an unclear understanding of the source-to-sink distribution pattern and sand body distribution. Therefore, in-depth research on the sedimentary fillings, the genetic types of sand bodies, and their distribution patterns under multiple provenance systems is of significant importance for efficient natural gas exploration and large-scale storage enhancement in this region. The study employed field outcrop survey, core analysis, thin-section observation, heavy mineral analysis, and well logging data to systematically analyze the sedimentary provenance of the He 1 Member in the Fuxian area. The study summarized the genetic types, structural characteristics, and the distribution and evolution patterns of sand bodies. During the sedimentary periods, the He 1 Member in the Fuxian area primarily developed a terrigenous clastic debris filling zone in the southern region and a mixed-provenance terrigenous clastic debris filling zone in the northern and southern region. Nine lithofacies types and three lithofacies assemblages were identified within the He 1 Member, with the main sand body genetic types being braided river facies channel filling in braided rivers and channel bars. Along the provenance direction, lithofacies assemblages evolved from incision, aggradation, and lateral accretion in the southern provenance zone to lateral accretion in the mixed-provenance zone of the northern and southern region. The He 1 Member experienced a sedimentary evolution process from terrigenous coarse clastic debris sedimentation during flood periods at an initial stage to muddy sedimentation during low water periods at a later stage. In addition, the sedimentary periods of He 1-1 and He 1-3 sublayers were favorable stages for the development of braided composite channel sand bodies, especially during the sedimentary period of the He 1-1 sublayer. The dominant sand bodies were mainly developed in the southern provenance sedimentary filling area in the central and eastern Fuxian area and the primary mixed-provenance filling area in the northern Fuxian area.
- heavy mineral /
- lithofacies type /
- sand body genesis /
- source-to-sink pattern /
- He 1 Member /
- Permian /
- Fuxian area /
- Ordos Basin
注释:

利益冲突声明/Conflict of Interests

作者王琳霖和苏娟是本刊主办单位员工，均未参与本文的同行评审和决策。

Authors WANG Linlin and SU Juan are employees of the sponsor of this journal.Neither of them took part in peer review or decision making of this article.

作者贡献/Authors’Contributions

方旭蕾、王琳霖、齐荣、高辉参与论文思路设计与研究；杨飞、刘璐、苏娟完成部分图件的编制；方旭蕾、王琳霖、齐荣参与了论文写作和修改。所有作者均阅读并同意最终稿件的提交。

The study was designed and researched by FANG Xulei, WANG Linlin, QI Rong, and GAO Hui. YANG Fei, LIU Lu, and SU Juan compiled parts of the figures. The manuscript was drafted and revised by FANG Xulei, WANG Linlin, and QI Rong. All authors have read the final version of the paper and consented to its submission.

HTML全文

图 1 鄂尔多斯盆地富县地区构造位置及上古生界地层综合柱状图

Figure 1. Structural location of Fuxian area in Ordos Basin and comprehensive stratigraphic column of Upper Paleozoic

下载: 全尺寸图片幻灯片

图 2 鄂尔多斯盆地富县地区二叠系下石盒子组1段岩屑组成平面分布

Figure 2. Planar distribution of rock debris components in the first member of Permian Lower Shihezi Formation in Fuxian area, Ordos Basin

下载: 全尺寸图片幻灯片

图 3 鄂尔多斯盆地富县地区二叠系下石盒子组1段砂岩碎屑组成平面分布

Figure 3. Planar distribution of sandstone clastic debris components in the first member of Permian Lower Shihezi Formation in Fuxian area, Ordos Basin

下载: 全尺寸图片幻灯片

图 4 鄂尔多斯盆地富县地区二叠系下石盒子组1段不同物源分区砂岩岩石薄片对比

Figure 4. Comparison of sandstone thin-sections in different provenance zones of the first member of Permian Lower Shihezi Formation in Fuxian area, Ordos Basin

下载: 全尺寸图片幻灯片

图 5 鄂尔多斯盆地富县地区二叠系下石盒子组1段重矿物成分平面分布

Figure 5. Planar distribution of heavy mineral components in the first member of Permian Lower Shihezi Formation in Fuxian area, Ordos Basin

下载: 全尺寸图片幻灯片

图 6 鄂尔多斯盆地富县地区二叠系下石盒子组1段岩心岩相类型与野外剖面岩相组合

a.Gm，新富5井，2 894.0 m；b.Gst，牛2井，2 821.2 m；c-d.St，新富5井，2 718.4 m，新富5井，2 696.3 m；e.Sp，富古6井，2 569.9 m；f.Sh，新富5井，2 702.6 m；g.Fh，任5井，2 963.5 m；h.Fr，新富3井，2 697.6 m；i.M，富古4井，2 876.1 m; j.大型冲刷不整合构造，含砾粗砂岩，淳化冶域河剖面，盒1段; k.黄绿色、紫红色粉砂质泥岩夹薄层粉砂岩，盒1段，韩城涺水河剖面。

Figure 6. Core lithofacies types and lithofacies assemblages of field profiles from the first member of Permian Lower Shihezi Formation in Fuxian area, Ordos Basin

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图 7 鄂尔多斯盆地富县地区二叠系下石盒子组1段岩心岩相与沉积微相综合柱状图

Figure 7. Comprehensive stratigraphic histogram of core lithofacies and sedimentary microfacies in the first member of Permian Lower Shihezi Formation in Fuxian area, Ordos Basin

下载: 全尺寸图片幻灯片

图 8 鄂尔多斯盆地富县地区顺物源方向下石盒子组连井沉积微相对比剖面

Figure 8. Comparison of sedimentary microfacies profiles of connecting-wells in Lower Shihezi Formation along provenance direction in Fuxian area, Ordos Basin

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图 9 鄂尔多斯盆地富县地区顺物源方向连井剖面取心段岩相组合对比

Figure 9. Comparison of lithofacies assemblages in core sections from connecting-wells along provenance direction in Fuxian area, Ordos Basin

下载: 全尺寸图片幻灯片

图 10 鄂尔多斯盆地富县地区二叠系下石盒子组1段小层砂体平面分布

Figure 10. Planar distribution of sand bodies in sublayers of the first member of Permian Lower Shihezi Formation in Fuxian area, Ordos Basin

下载: 全尺寸图片幻灯片

表 1 鄂尔多斯盆地富县地区主要钻井二叠系下石盒子组1段砂岩碎屑成分组成

Table 1. Sandstone clastic debris components in the first member of Permian Lower Shihezi Formation in key drilling wells of Fuxian area, Ordos Basin

地区	井名	骨架颗粒含量/%			岩屑成分含量/%
地区	井名	石英	长石	岩屑	火成岩屑	变质岩屑	沉积岩屑
北部混源区	富古2	49.4	0.0	21.7	2.2	19.3	0.1
	富古4	39.6	0.0	39.9	2.1	37.8	0.0
	富古7	47.2	0.1	23.3	1.5	21.3	0.4
	新富4	43.5	0.3	16.8	2.5	14.1	0.3
	新富12	60.5	0.1	13.4	1.4	12.0	0.0
	新富14	56.2	0.0	19.2	2.0	17.0	0.2
	牛1	47.7	0.0	16.9	2.9	13.9	0.2
	牛2	58.3	0.0	13.2	1.5	11.0	0.8
南部物源区	富古6	38.7	0.1	31.8	2.2	29.4	0.3
	新富5	54.2	0.2	19.3	0.8	18.5	0.1
	新富8	44.8	0.6	21.4	1.4	19.7	0.3
	任203	43.4	0.3	24.8	4.0	20.5	0.3
	任201	43.2	0.1	28.8	2.7	26.0	0.1
	任1	52.2	0.1	24.5	0.6	23.9	0.1

下载: 导出CSV

表 2 陆源碎屑重矿物稳定性划分据参考文献[22]修改。

Table 2. Stability classification of heavy minerals in terrigenous clastic debris

稳定性	重矿物
超稳定	金红石、锆石、电气石、锐钛矿
稳定	磷灰石、石榴石(含铁少)、十字石、独居石、黑云母、钛铁矿、磁铁矿
中等稳定	绿帘石、蓝晶石、石榴石(富含铁)、硅线石、榍石、黝帘石
不稳定	角闪石、阳起石、辉石、透辉石、紫苏辉石、红柱石
极不稳定	橄榄石

下载: 导出CSV

表 3 鄂尔多斯盆地富县地区重点井二叠系下石盒子组1段砂岩重矿物组成

Table 3. Heavy mineral components in sandstone of the first member of Permian Lower Shihezi Formation in key wells of Fuxian area, Ordos Basin

井名	重矿物含量/(mg/kg)
井名	锆石	金红石	电气石	磷灰石	磁铁矿	白钛石	石榴子石	方铅矿	辉石	角闪石
富古4	17.21	0.30	1.20	0.30		7.50		0.9	929.2
富古6	67.54	0.01	0.53			6.26				0.57
富古7	75.81	0.77	4.99			3.33	2.81
新富4	49.96	0.33	7.14			32.57
新富12	76.60	0.02	13.18			0.08
新富14	74.00	1.72	11.81			1.22
牛1	80.32	0.66	0.75			1.23
任203	0.08						76.45
任201	51.66	0.98	0.52	0.05	0.03	35.83
任1	53.78	0.89	14.13			12.59

下载: 导出CSV

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