准噶尔盆地滴南-阜北斜坡区侏罗纪煤系成烃贡献

林小云; 潘虹; 周新硕; 许宏龙; 朱宝柱

doi:10.3799/dqkx.2015.139

准噶尔盆地滴南-阜北斜坡区侏罗纪煤系成烃贡献

doi: 10.3799/dqkx.2015.139

林小云^{1, 2,},
潘虹³,
周新硕^{1, 2},
许宏龙^{1, 2},
朱宝柱^{1, 2}

1.
长江大学油气资源与勘探技术教育部重点实验室, 湖北武汉 430100
2.
长江大学地球科学学院, 湖北武汉 430100
3.
中国石油新疆油田分公司, 新疆克拉玛依 834000

基金项目:

国家油气重大专项项目 2011ZX05003-005

详细信息

作者简介:
林小云(1965-), 女, 教授, 博士, 主要从事石油地质研究及相关教学工作.E-mail: linxy65@126.com

中图分类号: P618.13
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出版历程
- 收稿日期: 2015-03-26
- 刊出日期: 2015-09-15

Devotion of Coal-Measure Derived Hydrocarbons of Di'nan Arch to Fubei Slope of Junggar Basin

Lin Xiaoyun^{1, 2
,},
Pan Hong³,
Zhou Xinshuo^{1, 2},
Xu Honglong^{1, 2},
Zhu Baozhu^{1, 2}

1.
Key Laboratory of Exploration Technologies for Oil and Gas Resources of the Ministry of Education, Yangtze University, Wuhan 430100, China
2.
School of Geosciences, Yangtze University, Wuhan 430100, China
3.
Xinjiang Oilfield Company, PetroChina, Karamay 834000, China

摘要

摘要: 滴南凸起-阜北斜坡区位于准噶尔盆地中央隆起带东段, 发育多个继承性古隆起, 是捕获油气的有利场所.其周缘地区存在的多个生烃凹陷均发育有侏罗系泥岩和煤岩, 油源关系较为复杂.从生烃条件探讨了侏罗纪煤系对彩南油田以北至滴南凸起白垩系吐谷鲁群原油和彩南油田以西至阜北斜坡区侏罗系石树沟群原油的贡献.该区域侏罗系煤岩分布零散, 厚度最厚达30 m, 显微组分以惰质组为主, 与侏罗系泥岩相比煤的供烃能力相对较弱.同时通过油源对比以及与南缘煤成油生物标志化合物特征对比, 明确了研究区白垩系原油来源于二叠系泥岩, 侏罗系原油来自二叠系泥岩和侏罗系泥岩.
- 准噶尔盆地 /
- 滴南凸起-阜北斜坡区 /
- 侏罗系 /
- 煤系烃源岩 /
- 生物标志化合物 /
- 石油地质 /
- 地层学
Abstract: The area from Di'nan arch to Fubei slope is located in the east of the Junggar basin which includes several old apophysis and is favorable to capture hydrocarbon since there are several hydrocarbon depressions with mudstone and coals of Jurassic, which leading to complex oil-source. The contribution of the coals to the oil of Shishugou and Tugulu through the hydrocarbon generating conditions is discussed in this paper. The Jurassic coal is scattered in the area with a thickness of mere 30 m. In addition, its maceral is generally composed of inertinite. The hydrocarbon supplying ability of the coal is relatively weak compared with that of the Jurassic mudstone. Comparison of the characteristics of biomarkers from the coal-measure source rock and crude oils indicates that the contribution from Jurassic coal-measure mudstone derived oil is relatively large. It is found that the Cretaceous oil comes from the Permian mudstone and the Jurassic oil comes from both Permian and Jurassic mudstones.
- Junggar basin /
- Di'nan arch-Fubei slope area /
- Jurassic /
- coal-measure source rock /
- biomarker compound /
- petroleum geology /
- stratigraphy

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图 1 研究区构造位置

Fig. 1. The structural location of the study area

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图 2 原油和源岩C₂₄四环萜烷/C₂₆三环萜烷与三环萜烷/五环三萜烷关系

Fig. 2. The relationship between C₂₄ tetracyclic terpane / C₂₆ tricyclic terpane and tricyclic terpane/ pentacyclic triterpene from the oil and rock samples

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图 3 准东地区原油与侏罗系煤岩甾萜烷特征对比

a.彩44井，1 802.74 m，K₁tg，褐灰色细砂岩；b.彩43井，2 080.50 m，J_2-3sh，原油；c.彩35井，3 741.06~3 744.84 m，J₁s，煤

Fig. 3. Comparison of sterane and terpane from crude oil and coal-measure source rock in Zhundong area

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图 4 煤岩和原油C₂₉甾烷含量与重排/规则甾烷关系

Fig. 4. The relationship between C₂₉ sterane and diasteranes/regular sterane

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图 5 原油和源岩C₂₇/C₂₉与C₂₈/C₂₉甾烷关系

Fig. 5. The relationship between C₂₇/C₂₉ and C₂₈/C₂₉ steranes

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图 6 原油、源岩碳同位素与姥植比关系

Fig. 6. The relationship between the carbon isotopes and Pr/Ph of the oil and rock samples

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图 7 各类原油/源岩二环倍半萜烷质量色谱

a.彩504井，2 576.00~2 580.00 m，J₂x，煤岩；b.彩35井，3 692.16~3 701.16 m，J₂x，黑色泥岩；c.彩5井，2 065.76~2 067.24 m，P₂p，灰黑色泥岩；d.齐34井，880.00~920.00 m，J₂，原油；e.彩43井，2 080.50 m，J_2-3sh，原油；f.彩42井，1 375.71~1 375.81 m，K₁h，灰色油浸细砂岩

Fig. 7. Mass chromatograms of bicyclic sesquiterpane of the oils and source rocks

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图 8 准东地区各类原油与烃源岩甾萜烷特征对比

a.滴西12井，1 585.00~1 587.50 m，K₁h₂，原油；b.阜7井，3 233.00~3 245.00 m，J₂t，原油；c.彩45井，2 246.00~2 252.00 m，J₂t，原油；d.阜10井，4 292.00~4 293.29 m，P₂p，深灰色泥岩；e.彩49井，3 421.07 m，J₁b，深灰色泥岩；f.滴南1井，2 977.50~2 979.50 m，P₂p，泥岩；红线表示三类化合物含量的变化趋势；箭头表示亲缘性

Fig. 8. Comparison of sterane and terpane from crude oils and source rocks in Zhundong area

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表 1 滴南凸起-阜北斜坡区原油、油砂生物标志化合物特征

Table 1. The biomarker of oil and oil sand in Di'nan arch-Fubei slope area

区域	井号	层位	样品深度(m)	样品类型	Pr/Ph	碳同位素(‰, PDB)	C₂₄四环/C₂₆三环甾烷	三环萜烷/五环三萜烷	甾烷C₂₈/C₂₉	甾烷C₂₇/C₂₉	重排/规则甾烷	伽马蜡烷指数
白家海凸起	彩45	J₂t	2 246.00	原油	2.50	-28.10	2.60	0.22	0.27	0.62	0.28	0.10
	彩36	J₃q	2 496.00	原油	2.30	-27.40	4.90	0.24	0.24	0.94	0.21	0.00
	彩44	K₁tg	1 862.74	油砂	1.70	-	1.03	1.87	0.60	0.84	0.28	0.31
	彩501	K₁tg	1 863.06	油砂	1.90	-28.60	1.02	0.90	0.55	0.74	0.24	0.31
阜北斜坡区	阜7	J₂t	3 233.00	原油	3.20	-26.70	6.70	0.08	0.26	0.55	0.22	0.05
	阜16	J₂t	4 096.84	油砂	1.90	-27.55	2.90	0.87	0.31	0.96	0.26	0.10
	阜11	J₂t	3 685.00	原油	-	-	4.90	0.19	0.51	1.10	0.23	0.09
滴南凸起	滴西1	K₁tg	2 205.98	原油	0.60	-29.76	1.00	0.80	0.58	1.00	0.11	0.33
	滴233	K₁tg	2 009.00	原油	0.33	-28.90	1.03	2.30	0.55	1.02	0.28	0.46
	滴西13	K₁tg	1 884.00	原油	0.47	-29.40	1.26	2.10	0.46	0.92	0.24	0.43
	滴西15	K₁tg	1 496.00	原油	0.65	-29.20	0.80	4.40	0.41	1.07	0.39	0.55
	滴15	K₁tg	1 477.00	原油	0.72	-29.00	0.76	7.30	0.53	0.36	0.29	0.27
东道海子凹陷	彩49	J₁b	3 410.45	泥岩	2.60	-25.30	7.20	0.02	0.21	0.25	0.44	0.07
白家海凸起	彩35	J₁s	3 741.06	煤	4.90	-24.29	0.60	0.29	0.29	0.06	0.29	0.00
东道海子凹陷	滴南1	P₂p	2 768.00	泥岩	1.50	-32.96	0.70	0.64	0.45	0.10	0.33	0.36

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