准噶尔盆地玛湖凹陷风城组泥页岩生物标志化合物特征与赋存状态研究

支东明; 冷筠滢; 谢安; 唐勇; 何晋译; 何文军; 李志明; 邹阳; 朱涛

doi:10.11781/sysydz202405954

准噶尔盆地玛湖凹陷风城组泥页岩生物标志化合物特征与赋存状态研究

doi: 10.11781/sysydz202405954

支东明^1,,
冷筠滢²,
谢安¹,
唐勇³,
何晋译²,
何文军^3, ,,
李志明²,
邹阳³,
朱涛³

1.
怀柔实验室新疆研究院, 乌鲁木齐 830000
2.
中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126
3.
中国石油新疆油田分公司勘探开发研究院, 新疆克拉玛依 834000

基金项目:

新疆维吾尔自治区“天山英才”科技创新领军人才支持项目 2022TSYCLJ0070

国家自然科学基金项目 42090022

详细信息

作者简介:
支东明(1971—), 男, 教授级高级工程师, 从事石油地质研究。E-mail: Zhidm@petrochina.com.cn

通讯作者:
何文军(1988—), 男, 硕士, 高级工程师, 从事油气地质研究。E-mail: fchwj@petrochina.com.cn

中图分类号: TE122.113
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- 被引次数: 0
出版历程
- 收稿日期: 2024-04-19
- 修回日期: 2024-08-07
- 刊出日期: 2024-09-28

Characteristics and occurrence states of shale biomarker compounds in Fengcheng Formation, Mahu Sag, Junggar Basin

1.
Xinjiang Research Institute of Huairou Laboratory, Urumqi, Xinjiang 830000, China
2.
Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China
3.
Research Institute of Petroleum Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China

摘要

摘要: 准噶尔盆地玛湖凹陷二叠系风城组泥页岩不同层段生物标志化合物特征与赋存状态特征认识较为薄弱，通过采用岩石热解、气相色谱—质谱、荧光薄片和氩离子抛光电镜等实验技术，厘清不同层段烃源岩物质基础、生物标志化合物分布特征及意义、不同赋存状态页岩油，对玛湖凹陷下一步勘探部署具有重要意义。玛湖凹陷风城组泥页岩主要为中等—好烃源岩，有机质类型为Ⅱ型，处于成熟演化阶段；生物标志化合物组成特征表明具有高丰度的Pr和Ph、β-胡萝卜烷及C₂₉重排甾烷，C₂₇-C₂₈-C₂₉规则甾烷呈反“L”型分布，指示有机质以藻类等低等水生生物贡献为主；较低的Pr/Ph比值以及较高的伽马蜡烷指数，反映出沉积环境主要为咸化的还原环境；C₃₁αβ22S/(22S+22R)、C₂₉M/C₂₉H和C₂₉ββ/(ββ+αα)等藿烷类和甾烷类成熟度参数表明烃源岩处于成熟阶段。另外，风城组二段泥页岩相对于风一段、风三段具有更大的生烃潜力，具备更好的烃源岩物质基础，同时C₂₀/C₂₃TT、C₂₁/C₂₃TT、Ga/C₃₀H等生物标志化合物相关参数指示风二段藻类等贡献较多，更偏还原和咸化的环境；结合风二段以游离赋存状态为主，认为烃类赋存于粒间孔和粒内孔中。风二段有利于页岩油富集与保存，展现出更好的页岩油勘探开发前景。
- 生物标志化合物 /
- 游离烃 /
- 页岩油 /
- 泥页岩 /
- 风城组 /
- 二叠系 /
- 玛湖凹陷 /
- 准噶尔盆地
Abstract: The characteristics of biomarker compounds and their occurrence states in different layers of the Permian Fengcheng Formation shale in Mahu Sag, Junggar Basin are poorly understood. By using experimental techniques such as rock pyrolysis, gas chromatography-mass spectrometry, fluorescence thin sections, and argon ion polishing electron microscopy, the material basis of hydrocarbon source rocks in different intervals, the distribution characteristics and significance of biomarker compounds, and different occurrence states of shale oil are clarified. This is of great significance for the next step in exploration and deployment in the Mahu Sag. The shale of the Fengcheng Formation in the Mahu Sag is mainly medium to good hydrocarbon source rocks, with type Ⅱ organic matter and in a mature evolutionary stage. The composition characteristics of biomarker compounds show high abundance of Pr and Ph, β-carotane, and C₂₉ rearranged steranes. The C₂₇-C₂₈-C₂₉ regular steranes exhibit an inverted "L" distribution, indicating that the organic matter is mainly contributed by lower aquatic organisms such as algae. Lower Pr/Ph ratios and higher gammacerane indices reflect a saline reducing sedimentary environment. Maturity parameters such as C₃₁αβ22S/(22S+22R), C₂₉M/C₂₉H, and C₂₉ββ/(ββ+αα) for hopanes and steranes indicate that the hydrocarbon source rocks are in the mature stage. In addition, the shale of the second member of the Fengcheng Formation has greater hydrocarbon generation potential and better source rock material basis than that in the first and third members. Meanwhile, biomarker compound parameters such as C₂₀/C₂₃TT, C₂₁/C₂₃TT, and Ga/C₃₀H indicate that the second member has more contributions from algae and other organisms, and a more reducing and saline environment. The hydrocarbons in the second member are mainly in a free occurrence state, residing in intergranular and intragranular pores. The study shows that the second member of the Fengcheng Formation is more favorable for shale oil enrichment and preservation, showing a better prospect for shale oil exploration and development.
- biomarker compound /
- free hydrocarbon /
- shale oil /
- Fengcheng Formation /
- Permian /
- Mahu Sag /
- Junggar Basin /
注释:

利益冲突声明/Conflict of Interests

作者李志明是本刊编委会成员及主办单位员工；冷筠滢、何晋译是本刊主办单位员工。所有作者均未参与本文的同行评审或决策。

Author Ll Zhiming is an Editorial Board Member and an employee of the sponsor of this journal. LENG Junying and HE Jinyi are employees of the sponsor of this journal. They did not take part in peer review or decision making of this article.

作者贡献/Authors’Contributions

支东明负责论文的整体思路规划和结构设计及实施；冷筠滢负责论文的撰写；谢安负责文献综述；唐勇负责实验设计与实验结果综合分析；何晋译负责数据搜集与数据分析；何文军负责技术支持和实验方法选择；李志明负责实验执行和成果数据分析；邹阳负责协助编制附图；朱涛负责论文的修订。所有作者均阅读并同意最终稿件的提交。

ZHI Dongming was responsible for the overall planning, structural design, and implementation of the paper. LENG Yunying was responsible for writing the paper. XIE An was responsible for the literature review. TANG Yong was responsible for the experimental design and comprehensive analysis of experimental results. HE Jinyi was responsible for data collection and analysis. HE Wenjun was responsible for technical support and selection of experimental methods. LI Zhiming was responsible for conducting experiments and analyzing the resulting data. ZOU Yang assisted with figure preparation. ZHU Tao was responsible for revising the paper. All authors have read the last version of the paper and consented to its submission.

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图 1 准噶尔盆地玛湖凹陷大地构造位置与地层柱状图

Figure 1. Geotectonic position and stratigraphic column of Mahu Sag, Junggar Basin

下载: 全尺寸图片幻灯片

图 2 准噶尔盆地玛湖凹陷玛页1井风城组泥页岩岩石热解(S₁+S₂)与有机碳含量(TOC)的关系

Figure 2. Relationship between rock pyrolysis (S₁+S₂) and TOC contents in shale samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

下载: 全尺寸图片幻灯片

图 3 准噶尔盆地玛湖凹陷风城组玛页1井泥页岩T_max值与R_o值随深度变化特征

Figure 3. Variation characteristics of T_max and R_o values with depth of shale samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

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图 4 准噶尔盆地玛湖凹陷风城组玛页1井泥页岩I_H—T_max和I_H—I_O关系图

Figure 4. I_H vs. T_max and I_H vs. I_O of shale samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

下载: 全尺寸图片幻灯片

图 5 准噶尔盆地玛湖凹陷玛页1井风城组烃源岩抽提物饱和烃m/z 85和m/z 125质量色谱图

Figure 5. Mass chromatograms of m/z 85 and m/z 125 of saturated hydrocarbons from source rock extracts of Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

下载: 全尺寸图片幻灯片

图 6 准噶尔盆地玛湖凹陷玛页1井风城组烃源岩样品Ph/nC₁₈—Pr/nC₁₇相关图

Figure 6. Ph/nC₁₈ vs. Pr/nC₁₇ of source rock samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

下载: 全尺寸图片幻灯片

图 7 准噶尔盆地玛湖凹陷玛页1井风城组烃源岩抽提物饱和烃m/z 191和m/z 217质量色谱图

Figure 7. Mass chromatograms of m/z 191 and m/z 217 of saturated hydrocarbons from source rock extracts of Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

下载: 全尺寸图片幻灯片

图 8 准噶尔盆地玛湖凹陷玛页1井风城组烃源岩含油性与可动性的相关性

Figure 8. Correlation between oil content and mobility of source rock samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

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图 9 准噶尔盆地玛湖凹陷玛页1井风城组泥页岩样品镜下特征

a-c.氩离子抛光电镜，4 671.7 m，主要储集空间类型为黏土矿物片间孔、长石溶孔，可见收缩缝；d-f.氩离子抛光电镜，4 715 m，主要储集空间类型为粒间孔、长石溶孔和白云石溶孔；g-i.氩离子抛光电镜，4 894.3 m，主要储集空间为粒间孔及黏土矿物片间孔，长石溶孔及白云石溶孔；j-k.普通薄片和荧光薄片，4 671.7 m，整体荧光现象明显，白云石胶结、溶蚀处粒间见黄绿色荧光，未被交代的自生碎屑颗粒呈亮绿色荧光；l-m.普通薄片和荧光薄片，4 715 m，整体荧光现象明显，白云石颗粒内部及周缘呈亮黄绿色荧光，粒间见亮绿色荧光，黏土矿物呈暗橙黄色荧光；n-o.普通薄片和荧光薄片，4 894.3 m，整体荧光现象明显，白云石颗粒内部及周缘呈亮黄绿色荧光，粒间见亮绿色荧光。

Figure 9. Microscopic characteristics of shale samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

下载: 全尺寸图片幻灯片

表 1 准噶尔盆地玛湖凹陷玛页1井风城组烃源岩抽提物萜烷类化合物参数

Table 1. Selected parameters related to terpene hydrocarbons in source rock extracts from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

地层	深度/m	C₂₀TT/C₂₃TT	C₂₁TT/C₂₃TT	C₂₄TeT/(C₂₄ TeT+C₂₃TT)	C₂₉H/C₃₀H	C₃₁H/C₃₀H	C₂₃TT/C₃₀H	Ga/C₃₀H	Ga/0.5C₃₁H(22R+22S)	C₃₁αβ22S/(22S+22R)	C₂₉M/C₂₉H	C₃₀M/C₃₀H
风三段	4 591.92	0.44	0.78	0.30	0.58	0.22	0.29	0.08	0.32	0.55	0.11	0.14
风三段	4 598.82	0.72	1.05	0.31	0.59	0.22	0.35	0.07	0.31	0.54	0.10	0.15
风二段	4 676.90	0.49	0.75	0.24	0.58	0.21	0.49	0.16	1.65	0.58	0.11	0.13
风二段	4 713.14	0.48	0.73	0.21	0.57	0.20	0.56	0.24	1.98	0.58	0.11	0.15
风二段	4 740.39	0.49	0.66	0.40	0.64	0.19	0.50	0.43	1.92	0.57	0.13	0.15
风二段	4 749.73	0.45	0.66	0.23	0.56	0.21	0.65	0.43	1.69	0.59	0.11	0.14
风一段	4 800.10	0.45	0.72	0.19	0.68	0.20	0.93	0.67	2.55	0.55	0.13	0.15
风一段	4 824.60	0.45	0.73	0.15	0.72	0.20	1.42	0.57	2.25	0.60	0.11	0.14
风一段	4 867.97	0.56	0.69	0.26	0.66	0.15	0.83	0.59	2.05	0.56	0.13	0.13
风一段	4 933.71	0.47	0.70	0.09	0.80	0.18	1.02	0.72	2.65	0.60	0.12	0.15
风一段	4 939.13	0.67	0.79	0.09	0.80	0.16	1.35	0.60	2.53	0.57	0.14	0.14

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