【引用本文】 郑庆华, 刘行军, 刘乔, 等. 利用偏光显微镜反射光系统观察黑色生油岩电子探针薄片中的生烃母质特征[J]. 岩矿测试, 2020, 39(3): 442-450. doi: 10.15898/j.cnki.11-2131/td.201911180160
ZHENG Qing-hua, LIU Xing-jun, LIU Qiao, et al. A Method for Observation of Characteristics of Hydrocarbon Generation Materials in Electron Probe Thin Sections of Black Source Rock by the Reflected-light Viewing System of a Polarized Optical Microscope[J]. Rock and Mineral Analysis, 2020, 39(3): 442-450. doi: 10.15898/j.cnki.11-2131/td.201911180160

利用偏光显微镜反射光系统观察黑色生油岩电子探针薄片中的生烃母质特征

1. 

榆林学院化学与化工学院, 陕西 榆林 719000

2. 

中国石油测井有限公司长庆事业部, 陕西 西安 710201

3. 

中国石油长庆油田公司第五采油厂, 陕西 西安 710201

4. 

中国石油新疆油田分公司风城油田作业区, 新疆 克拉玛依 834000

收稿日期: 2019-11-18  修回日期: 2019-12-11  接受日期: 2020-05-13

基金项目: 榆林学院博士科研启动基金项目(18GK28)

作者简介: 郑庆华, 博士, 讲师, 主要从事沉积学、油气储层地质学、致密油、页岩油的研究与教学工作。E-mail:272594012@qq.com

A Method for Observation of Characteristics of Hydrocarbon Generation Materials in Electron Probe Thin Sections of Black Source Rock by the Reflected-light Viewing System of a Polarized Optical Microscope

1. 

School of Chemistry & Chemical Engineering, Yulin University, Yulin 719000, China

2. 

Changqing Division, China Petroleum Well Logging Limited Company, Xi'an 710201, China

3. 

No.5 Oil Production Plant, PetroChina Changqing Oilfield Company, Xi'an 710201, China

4. 

Fengcheng Field Operation District, PetroChina Xinjiang Oilfield Company, Karamay 834000, China

Received Date: 2019-11-18
Revised Date: 2019-12-11
Accepted Date: 2020-05-13

摘要:鄂尔多斯盆地上三叠统延长组长7油层组的黑色泥岩、油页岩等黑色生油岩薄片中的生烃母质,因黑色石油、沥青等黑色有机质的覆盖或不透明,导致其在偏光显微镜透射光系统下观察常局部或整体呈现为黑色。因此,建立一种黑色生油岩薄片中生烃母质有效观察的方法,对致密油、页岩油的生烃研究具有重要的理论和实际意义。本文提出了一种利用电子探针薄片和偏光显微镜的反射光系统观察黑色生油岩中生烃母质特征的方法。该方法能够克服黑色生油岩薄片中生烃母质因被黑色有机质覆盖或不透明,而在偏光显微镜的透射光系统下局部或整体呈黑色的弊端,能够对生烃母质的大小、形态、结构、分布和物质成分等特征进行整体且清晰的观察。实践表明,本文提出的利用偏光显微镜反射光系统观察黑色生油岩电子探针薄片中生烃母质特征的方法,简单有效,易在致密油、页岩油的生烃研究领域推广使用。

关键词: 黑色生油岩, 黑色有机质, 生烃母质, 偏光显微镜反射光系统, 电子探针薄片

要点

(1) 分析了观察黑色生油岩中生烃母质存在的问题。

(2) 提出了一种利用电子探针薄片和偏光显微镜的反射光系统,观察黑色生油岩中生烃母质特征的方法。

(3) 对比分析电子探针薄片中的生烃母质在偏光显微镜透射光、反射光系统下的特征,论证方法的可行性。

A Method for Observation of Characteristics of Hydrocarbon Generation Materials in Electron Probe Thin Sections of Black Source Rock by the Reflected-light Viewing System of a Polarized Optical Microscope

ABSTRACT

BACKGROUND:

The hydrocarbon generation materials in thin sections of black source rocks (such as black mudstone, oil shale), from the Chang 7 Member of the Upper Triassic Yanchang Formation in the Ordos Basin, are often partially or entirely black under the transmitted-light viewing system of a polarized optical microscope, because they are covered by black organic matter (such as oil, asphaltene) or opaque.

OBJECTIVES:

To put forward an effective method to observe the hydrocarbon generation materials in thin sections of black source rock.

METHODS:

A method for observation of characteristics of hydrocarbon generation materials of black source rock was proposed, using the reflected-light viewing system of a polarized optical microscope on electron probe thin sections.

RESULTS:

The method can overcome the problem that hydrocarbon generation materials in thin section were covered by black organic matter or were opaque. The size, shape, structure, distribution of hydrocarbon generation materials and composition can be entirely and clearly observed in thin sections of black source rock.

CONCLUSIONS:

In the long-term test, it has been proved that the method for observation of characteristics of hydrocarbon generation material in thin sections of black source rock by the reflected-light viewing system of a polarized optical microscope is simple and effective, and can be easily used in the study of hydrocarbon generation of tight oil and shale oil.

KEY WORDS: black source rock, black organic matter, hydrocarbon generation material, reflected-light viewing system of polarized optical microscope, electron probe thin section

HIGHLIGHTS

(1) The problems of observation of hydrocarbon generation materials in black source rock were discussed.

(2) A method for observation of characteristics of hydrocarbon generation materials in electron probe thin sections of black source rock by the reflected-light viewing system of a polarized optical microscope was proposed.

(3) The feasibility of the method was demonstrated, through comparative analysis of observation characteristics of hydrocarbon generation materials in electron probe thin sections of black source rock by reflected-light and transmitted-light viewing system of a polarized optical microscope.

本文参考文献

[1]

杨俊杰. 鄂尔多斯盆地构造演化与油气分布规律[M] . 北京: 石油工业出版社, 2002

Yang J J. Tectonic evolution and oil and gas distribution in the Ordos Basin[M] . Beijing: Petroleum Industry Press, 2002
[2]

杨华, 张文正. 论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:地质地球化学特征[J]. 地球化学, 2005, 34(2): 147-154.

Yang H, Zhang W Z. Leading effect of the seventh Member high-quality source rock of Yanchang Formation in Ordos Basin during the enrichment of low-penetrating oil-gas accumulation:Geology and geochemistry[J]. Geochimica, 2005, 34(2): 147-154.

[3]

杨华, 窦伟坦, 刘显阳, 等. 鄂尔多斯盆地三叠系延长组长7沉积相分析[J]. 沉积学报, 2010, 28(2): 254-263.

Yang H, Dou W T, Liu X Y, et al. Analysis on sedimentary facies of Chang 7 Member in Yanchang Formation of Triassic in Ordos Basin[J]. Acta Sedimentologica Sinica, 2010, 28(2): 254-263.

[4]

郭艳琴, 惠磊, 张秀能, 等. 鄂尔多斯盆地三叠系延长组沉积体系特征及湖盆演化[J]. 西北大学学报(自然科学版), 2018, 48(4): 593-602.

Guo Y Q, Hui L, Zhang X N, et al. Sedimentary system characteristics and lake basin evolution of Triassic Yanchang Formation in Ordos Basin[J]. Journal of Northwest University (Natural Science Edition), 2018, 48(4): 593-602.

[5]

郑庆华, 刘乔, 梁秀玲, 等. 鄂尔多斯盆地上三叠统延长组长7油层组沉积相分析[J]. 地层学杂志, 2020, 44(1): 35-45.

Zheng Q H, Liu Q, Liang X L, et al. Sedimentary facies analysis of the Chang 7 Member of the Upper Triassic Yanchang Formation in the Ordos Basin, NW China[J].Journal of Stratigraphy, 2020, 44(1): 35-45.

[6]

张晓辉, 冯顺彦, 梁晓伟, 等. 鄂尔多斯盆地陇东地区延长组长7段沉积微相及沉积演化特征[J]. 地质学报, 2020, 94(3): 957-967.

Zhang X H, Feng S Y, Liang X W, et al. Sedimentary microfacies identification and inferred evolution of the Chang 7 Member of Yanchang Formation in the Longdong area, Ordos Basin[J]. Acta Geologica Sinica, 2020, 94(3): 957-967.

[7]

杨华, 李士祥, 刘显阳, 等. 鄂尔多斯盆地致密油、页岩油特征及资源潜力[J]. 石油学报, 2013, 34(1): 1-11.

Yang H, Li S X, Liu X Y, et al. Characteristics and resource prospects of tight oil and shale oil in Ordos Basin[J]. Acta Petrolei Sinica, 2013, 34(1): 1-11.

[8]

张文正, 杨华, 杨伟伟, 等. 鄂尔多斯盆地延长组长7湖相页岩油地质特征评价[J]. 地球化学, 2015, 44(5): 505-515.

Zhang W Z, Yang H, Yang W W, et al. Assessment of geological characteristics of lacustrine shale oil reservoi