南襄盆地泌阳凹陷古近系核桃园组油气充注幕次及成藏年龄确定

朱颜; 李风勋; 陈红汉; 赵莹彬; 李丽娟; 郑融; 卜旭强

doi:10.11781/sysydz202101112

南襄盆地泌阳凹陷古近系核桃园组油气充注幕次及成藏年龄确定

doi: 10.11781/sysydz202101112

1.
中国石化河南油田分公司勘探开发研究院, 郑州 450000
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.
中国地质大学(武汉) 资源学院, 武汉 430074

基金项目:

国土资源部项目 1A14YQKYQ0107

中国石化重大科技攻关项目 ZDP17012

详细信息

作者简介:
朱颜(1983-), 男, 副研究员, 从事油气勘探综合研究。E-mail: zhu007yan@163.com

通讯作者:
赵莹彬(1986-), 男, 硕士, 助理研究员, 从事石油地质研究。E-mail: znsym@163.com

中图分类号: TE122.3
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- 文章访问数: 600
- HTML全文浏览量: 143
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- 被引次数: 0
出版历程
- 收稿日期: 2020-02-16
- 修回日期: 2020-12-07
- 刊出日期: 2021-01-28

Hydrocarbon charging events and timing in Paleogene Hetaoyuan Formation, Biyang Sag, Nanxiang Basin

1.
Research Institute of Exploration and Development, Henan Oilfield Company, SINOPEC, Zhengzhou, Henan 450000, China
2.
Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China
3.
School of Earth Resources, China University of Geosciences, Wuhan, Hubei 430074, China

摘要

摘要: 前人研究认为南襄盆地的构造对油气成藏具有控制作用，但针对油藏确切的形成时间及其与构造运动的耦合关系一直不明确。通过对流体包裹体的系统分析，利用埋藏史投影法，明确泌阳凹陷古近系核桃园组油气充注幕次和成藏期次，确定其成藏年代。泌阳凹陷共有“四幕两期油、一幕天然气”充注，第一期为泌阳凹陷的主要成藏期，主要发生在断陷-抬升阶段，包括第一幕（36.1~23.5 Ma）、第二幕（34.1~21.2 Ma）和第三幕（30.9~16.2 Ma）成藏，具有多阶连续性充注特点；第二期发生在拗陷沉降阶段，即第四幕（7.9~0.2 Ma）油和一幕（3.0~0.8 Ma）天然气成藏。泌阳凹陷内部的不同构造区带的油气充注时间存在差异，中部深凹区和南部陡坡带距离生烃中心较近，优先充注早期成藏；而北部斜坡带成藏时期相对较晚。泌阳凹陷南部应加强纵向多层位、多期次立体勘探，中部加强隐蔽岩性勘探的攻关力度，北部重点加强次生或调整的构造油藏勘探。
- 流体包裹体 /
- 油气充注幕次 /
- 成藏年龄 /
- 核桃园组 /
- 泌阳凹陷 /
- 南襄盆地
Abstract: Previous studies showed that the structure of Nanxiang Basin controlled the formation of oil and gas reservoirs, but the exact formation time of the reservoir and its coupling relationship with structural movement are not clear yet. Therefore, by analyzing the fluid inclusion system and combining with the projection method of burial history, this paper analyzed the times of oil and gas charging and accumulation in the Paleogene Hetaoyuan Formation of the Biyang Sag, and determined the age of oil and gas accumulation. The results showed that there were four phases of oil charging in two stages and one phase of natural gas charging in the Biyang Sag. The first stage mainly occurred during fault depression and uplift, including the first phase (36.1-23.5 Ma), the second phase (34.1-21.2 Ma) and the third phase (30.9-16.2 Ma) of oil charging, with the characteristics of multi-phase continuous charging. The second stage occurred during depression subsidence, including the fourth phase (7.9-0.2 Ma) of oil charging and the first phase (3.0-0.8 Ma) of natural gas charging. The early stage (the first phase) was the main formation time of oil and gas reservoirs in the Biyang Sag. The charging time of oil and gas was different in different structural zones in the Biyang Sag. The central deep subsided area and the southern slope were closer to the hydrocarbon-generating center, and were charged earlier, while the northern slope was charged relatively late. Therefore, it is recommended to focus on strengthening the vertical multi-layer and multi-stage three-dimensional exploration in the southern part of the Biyang Sag, strengthening the exploration of subtle lithology in the center, and focusing on the exploration of secondary or adjusted structural reservoirs in the north.
- fluid inclusion /
- hydrocarbon charging events /
- accumulation ages /
- Hetaoyuan Formation /
- Biyang Sag /
- Nanxiang Basin

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图 1 南襄盆地泌阳凹陷流体包裹体样品井位分布

Figure 1. Location of fluid inclusion samples in Biyang Sag, Nanxiang Basin

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图 2 南襄盆地泌阳凹陷流体包裹体岩相学特征

a-b.B228井，Eh³₃，1 063.2 m，油浸细砂岩，石英颗粒内裂纹中见发蓝色荧光的次生油包裹体，单一液相，主峰波长为478 nm；c-d.B197井，Eh⁵₃，2 867.5 m，中砂岩，岩屑颗粒内次生溶孔中见发蓝绿色荧光的次生油包裹体，气液两相，主峰波长为515 nm；e-f.B210井，Eh⁸₃，2 758.7 m，粗砂岩，石英颗粒内裂纹中见发微弱荧光，纯气相包裹体。a，c，e为透射光；b，d，f为荧光

Figure 2. Petrographic characteristics of fluid inclusions in Biyang Sag, Nanxiang Basin

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图 3 南襄盆地泌阳凹陷南部陡坡带油包裹体显微荧光光谱图

Figure 3. Micro-beam fluorescence spectra of oil inclusions on southern steep slope of Biyang Sag, Nanxiang Basin

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图 4 南襄盆地泌阳凹陷南部陡坡带油包裹体Q_F535与λ_max关系

Figure 4. Relationship between Q_F535 and λ_max of micro-beam fluorescence spectra of oil inclusions on southern steep slope of Biyang Sag, Nanxiang Basin

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图 5 南襄盆地泌阳凹陷单个油包裹体显微荧光光谱Q_F535与主峰波长λ_max关系

Figure 5. Relationship between Q_F535 and λ_max of micro-beam fluorescence spectra of oil inclusions in Biyang Sag, Nanxiang Basin

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图 6 南襄盆地泌阳凹陷古近系核桃园组砂岩储层无机(含烃盐水)包裹体均一温度

Figure 6. Homogenization temperature of inorganic (hydrocarbon-containing brine) inclusions in sandstone reservoirs of Paleogene Hetaoyuan Formation in Biyang Sag, Nanxiang Basin

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图 7 南襄盆地泌阳凹陷古近系核桃园组砂岩储层有机(油)包裹体均一温度

Figure 7. Homogenization temperature of organic (oil) inclusions in sandstone reservoirs of Paleogene Hetaoyuan Formation in Biyang Sag, Nanxiang Basin

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图 8 南襄盆地泌阳凹陷B197井埋藏史—均一温度投影法获取油气充注时间

Figure 8. Acquisition of oil and gas filling times by the method of burial history and uniform temperature projection of well B 197 in Biyang Sag, Nanxiang Basin

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图 9 南襄盆地泌阳凹陷古近系核桃园组油气成藏期次和成藏时间

Figure 9. Oil and gas accumulation stages and times of Paleogene Hetaoyuan Formation in Biyang Sag, Nanxiang Basin

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表 1 南襄盆地泌阳凹陷油包裹体显微荧光光谱参数

Table 1. Micro-beam fluorescence spectra parameters of oil inclusions in Biyang Sag, Nanxiang Basin

地区	井号	深度/m	层位	油气充注幕次	油包裹体荧光颜色	主峰波长(λ_max)/nm	红绿商(Q)	Q_F535
中部深凹区	B78	1 916.2	Eh₂³	2	橙黄色、蓝色	554	0.64	1.63
	B94	2 108.7	Eh₃³	3	黄色、黄绿色、蓝色	498	0.23	0.77
	B94	2 109.0	Eh₃³	3	黄色、黄绿色、蓝色	499	0.25	0.89
	B168	1 522.4	Eh₃²	3	黄色、蓝绿色、蓝色	518	0.43	1.16
	B168	1 684.8	Eh₃³	3	黄色、蓝绿色、蓝色	522	0.45	1.15
	B197	2 867.5	Eh₃⁵	2	黄色、黄绿色	520	0.31	0.93
	B197	3 231.2	Eh₃⁷	2	黄色、黄绿色	525	0.29	0.96
	B214	1 830.4	Eh₃⁶	3	橙黄色、黄绿色、蓝色	546	0.42	1.46
		1 838.6	Eh₃⁶			541	0.51	1.33
		1 846.8	Eh₃⁶			552	0.7	1.55
北部斜坡带	Yq20	809.4	Eh₃⁵	2	绿色、亮蓝色	519	0.3	0.98
	B121	878.4	Eh₃⁵	2	黄色、蓝绿色	516	0.28	0.97
		879.9	Eh₃⁵			520	0.46	1.22
		784.6	Eh₃⁴			546	0.63	1.56
	B134	1 138.4	Eh₃⁶	3	黄绿色、蓝色、亮蓝色	502	0.27	0.86
	B134	1 138.4	Eh₃⁶	3	黄绿色、蓝色、亮蓝色	529	0.42	1.16
	B175	841.3	Eh₃⁴	1	黄色	543	0.61	1.41
	B228	1 062.5	Eh₃³	4	黄色、橙黄色、蓝绿色、亮蓝色	547	0.65	1.48
	B228	1 063.4	Eh₃³	4	黄色、橙黄色、蓝绿色、亮蓝色	526	0.43	1.13
	B231	1 090.5	Eh₃⁶	2	黄绿色、蓝色	495	0.37	0.98
	B241	1 515.2	Eh₃³	2	黄色、蓝色	546	0.56	1.31
		1 525.0	Eh₃³			530	0.42	1.17
		1 525.0	Eh₃³			550	0.65	1.53

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