陆相断陷盆地成藏流体动力差异性及表征

张守春; 王学军; 王秀红; 朱日房; 邱贻博

doi:10.11781/sysydz202206941

陆相断陷盆地成藏流体动力差异性及表征

doi: 10.11781/sysydz202206941

张守春^{1, 2, 3, 4, 5,},
王学军¹,
王秀红^{1, 2, 3, 4, 5},
朱日房^{1, 2, 3, 4, 5},
邱贻博¹

1.
中国石化胜利油田分公司勘探开发研究院, 山东东营 257015
2.
国家能源页岩油研发中心, 山东东营 257015
3.
山东省非常规油气勘探开发重点实验室(筹), 山东东营 257015
4.
中国石化页岩油勘探开发重点实验室, 山东东营 257015
5.
东营市油藏地球化学实验室, 山东东营 257015

基金项目:

中国石化科技攻关项目“胜利滩海古近系沉积、成藏规律与目标评价” P21034-2

中国石化科技攻关项目“济阳坳陷近源领域成藏体系评价及目标优选” P22066

详细信息

作者简介:
张守春(1970—)，男，博士研究生，高级工程师，从事油气地球化学研究。E-mail: zhangsc_slof@163.com

中图分类号: TE122.3
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出版历程
- 收稿日期: 2022-02-25
- 修回日期: 2022-09-21
- 刊出日期: 2022-11-28

Dynamic difference and characterization of reservoir fluid in continental rift basins

ZHANG Shouchun^{1, 2, 3, 4, 5
,},
WANG Xuejun¹,
WANG Xiuhong^{1, 2, 3, 4, 5},
ZHU Rifang^{1, 2, 3, 4, 5},
QIU Yibo¹

1.
Exploration & Development Research Institute, Shengli Oilfield Branch Company, SINOPEC, Dongying, Shandong 257015, China
2.
State Energy Center for Shale Oil Research and Development, Dongying, Shandong 257015, China
3.
Key Laboratory of Unconventional Oil and Gas Exploration and Development of Shandong Province (Preparation), Dongying, Shandong 257015, China
4.
Key Laboratory of Shale Oil Exploration and Development of SINOPEC, Dongying, Shandong 257015, China
5.
Reservoir Geochemistry Laboratory of Dongying, Dongying, Shandong 257015, China

摘要

摘要: 通过研究盆地各压力系统(超压带、过渡带及常压带)油藏烃类地球化学特征的差异性，建立地球化学指标变化与动力学条件的关联。以渤海湾盆地济阳坳陷东营、沾化凹陷为例，分析甾烷异构化参数、轻/重比参数随深度的变化，明确由超压充注到常压驱动的过渡。选取东营凹陷博兴洼陷(单一压力结构)和沾化凹陷渤南洼陷(复合压力结构)的典型剖面，分析各区带地球化学参数差异性对应的动力学条件，各指标的变化与超压驱动及浮力驱动表现出良好的对应关系，并对成藏期异常压力的波及范围进行研究，该范围远大于现今油藏异常压力的分布范围，尤其在斜坡断阶带向外围有较大幅度延伸。在对动力条件进行地化表征的基础上，精细刻画成藏体系与供烃范围。
- 陆相断陷盆地 /
- 成藏动力 /
- 差异性 /
- 地球化学
Abstract: In order to establish the relationship between hydrocarbon characteristic variations and dynamic environments, the differences of hydrocarbon geochemical characteristics of reservoirs in various pressure systems (overpressure zone, transitional pressure zone and normal pressure zone) were studied. The Dongying and Zhanhua sags in the Jiyang Depression of the Bohai Bay Basin were taken as examples in this paper, the variations of sterane isomerization parameter, sterane light/heavy ratio with depth were revealed. The transition from overpressure charging to normal pressure driving was clarified. The typical profiles of the Boxing (single pressure structure) and Bonan (composite pressure structure) sub-sags in the Dongying and Zhanhua sags, respectively, were selected for the differential analyses of geochemical parameters and corresponding dynamic conditions in various belts. The variations of the geochemical parameters showed high correlations to overpressure driving and buoyancy driving. The development ranges of abnormal pressure during reservoir formation were studied as well, which are much larger than the present abnormal pressure distribution ranges. Especially in the step-fault zone belt, historic overpressure had greatly extended outwards. According to the geochemical characterization of dynamic conditions, the reservoir formation systems and hydrocarbon supply ranges were described in detail.
- continental rift basin /
- reservoir forming dynamics /
- difference /
- geochemistry

HTML全文

图 1 济阳坳陷不同类型烃源岩烃类指标随深度变化

Figure 1. Comparison of hydrocarbon indexes in different source rocks with depth in Jiyang Depression

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图 2 济阳坳陷油藏烃类指标随深度变化

Figure 2. Hydrocarbon indexes in reservoirs with depth in Jiyang Depression

下载: 全尺寸图片幻灯片

图 3 济阳坳陷沾化凹陷渤南洼陷L68—L35—L352井区地球化学参数随运移变化

Figure 3. Variation of geochemical parameters related to migration in wells L68, L35 and L352 in Bonan Sub-sag, Zhanhua Sag, Jiyang Depression

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图 4 济阳坳陷沾化凹陷渤南洼陷南坡L10—L9—L321—C312井区地化参数随运移变化

Figure 4. Variation of geochemical parameters related to migration in wells L10, L9, L321 and C312 on the southern slope of Bonan Sub-sag, Zhanhua Sag, Jiyang Depression

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图 5 烃类指标随动力区间变化

Figure 5. Hydrocarbon index changing with dynamic range

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图 6 济阳坳陷东营凹陷博兴洼陷南北向剖面油气运移动力学差异性的地球化学表征

F4—F11井区位于洼陷内部压力中心；F32—G80—F105井区位于断阶带内侧过渡带；G39—G26井区位于断阶外侧过渡带；JX103—J8井区位于洼陷边缘常压带。

Figure 6. Geochemical characterization of dynamic differences of hydrocarbon migration in a NS profile in Boxing Sub-sag, Dongying Sag, Jiyang Depression

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图 7 济阳坳陷沾化凹陷渤南洼陷南北向剖面油气运移动力学差异性的地球化学表征

Y104—Y170井区位于洼陷内部压力中心；Y88—Y36井区位于洼陷中心—断阶带内侧两个压力中心之间的过渡带；K5—LG5井区位于断阶外侧过渡带；C40—C4井区位于洼陷边缘常压带。

Figure 7. Geochemical characterization of dynamic differences of hydrocarbon migration in a NS profile in Bonan Sub-sag, Zhanhua Sag, Jiyang Depression

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表 1 济阳坳陷东营凹陷博兴洼陷岩性油气藏与周边烃源岩烃类指标对比

Table 1. Comparison of hydrocarbon indexes between lithologic reservoirs and surrounding source rocks in Boxing Subsag, Dongying Sag, Jiyang Depression

井号	样品类型	深度/m	层位	C₂₉S/R	C₂₇/C₂₉ββ
F11	原油	2 550~2 750	Es₃^上	1.08	1.11
F24	原油	2 959~2 967	Es₃^中	1.02	0.92
F10	原油	2 973.9~2 979.9	Es₃^中	1.29	0.95
F14	原油	2 992~3 002	Es₃^中	1.11	1.08
F23	泥岩	3 058.28	Es₃^中	0.84	0.88
F101	泥岩	3 169.90	Es₃^下	0.80	0.70

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表 2 济阳坳陷东营凹陷博兴洼陷南北向剖面主要井位烃类参数

Table 2. Hydrocarbon parameters of the main wells along NS profile in Boxing Sub-sag, Dongying Sag, Jiyang Depression

运移分带		井名	样品类型	井深/m	层位	C₂₉S/R	C₂₇/C₂₉ββ
洼陷边缘常压带		JX103	原油	1 090.5~1 099.8	Es₁	0.72	1.07
过渡带	断阶带外侧	G26-5	油砂	1 515	Es₂	0.97	0.94
	断阶带外侧	G39	原油	1 706.4~1 713.1	Es₂	1.05	0.93
	断阶带内侧	F32	原油	2 094.5~2 100.8	Es₁	0.85	0.78
		F105	原油	2 315.1~2 329.6	Es₂	0.81	0.85
		F105	原油	2 329.6~2 315.1	Es₂	0.75	0.98
		G80	油砂	2 473.47	Es₃^上	0.82	0.86
洼陷中心超压带		F11	原油	2 550~2 750	Es₃^上	1.08	1.11
		F24	原油	2 820~2 825	Es₃^中	1.07	0.91
		F10	原油	2 892~2 914	Es₃^中	1.19	1.05
		F31	原油	2 906~2 912	Es₃^中	0.87	0.87
		F24	原油	2 959~2 967	Es₃^中	1.02	0.92
		F10	原油	2 973.9~2 979.9	Es₃^中	1.29	0.95
		F14	原油	2 992~3 002	Es₃^中	1.11	1.08
		F125	原油	3 143.8~3 152.5	Es₃^下	0.74	1.03
		F122	原油	3 145.2~3 147.0	Es₃^中	0.64	1.01
		F181	原油	3 189.4~3 194.0	Es₃^下	0.77	1.20
		F181	原油	3 194.0~3 198.4	Es₃^下	0.68	1.13
		G893	原油	3 195~3 238	Es₄	0.83	0.82
		F101	油砂	3 275.56	Es₃^下	0.88	0.92
		F1	油砂	3 311.7	Es₄	1.00	0.78

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表 3 济阳坳陷沾化凹陷渤南洼陷南北向剖面主要井位参数

Table 3. Hydrocarbon parameters of the main wells along NS profile in Bonan Sub-sag, Zhanhua Sag, Jiyang Depression

区带		井名	深度/m	样品类型	层位	油源	C₂₉S/R	C₂₇/C₂₉ββ
洼陷边缘常压带		C37	1 201.0~1 213.4	原油	Ng	Es₄	0.71	1.26
		C40	1 361.0~1 443.8	原油	Ng+Ed	Es₄	0.42	0.97
		C40-1	1 441.96~1 452.50	原油	Es₁	Es₄	0.47	1.05
		C40-1	1 445.1~1 453.0	原油	Es₁	Es₄	0.44	1.19
过渡带	断阶带外侧	L801-1	1 737~1 745	原油	Es₄	Es₄	0.64	1.03
		K5	1 839~1 900	原油	Es₃—Es₄	Es₄	0.79	0.91
		L50	2 077.2	油砂	Es₃—Es₄	Es₄	0.86	0.99
		L50	2 086	油砂	Es₄	Es₄	0.92	0.86
		L50	2 109	油砂	Es₄	Es₄	0.89	1.03
	断阶带内侧或两个压力中心间隔区域	Y49	2 763.6~2 767.4	原油	Es₂	Es₃	0.68	0.9
		L48	2 973.12~3 065.00	原油	Es₄	Es₄	0.93	0.58
		Y88	2 989.7~3 040.0	原油	Es₂	Es₃	0.54	1.08
		Y123	3 190.6~3 200.4	原油	Es₂	Es₃	0.64	0.48
		L151	3 036.3~3 062.6	原油	Es₃	Es₃	0.84	1.21
		Y37	3 121~3 127	原油	Es₂	Es₃	1.13	1.07
		Y85	3 221~3 223	原油	Es₃	Es₃	0.59	1.11
		Y36	3 312.4~3 330.0	原油	Es₂	Es₄	0.68	0.59
洼陷中心超压带		Y170	3 233.2	油砂	Es₃	Es₃	0.89	1.22
		Y110	3 644~3 666	原油	Pt	Es₃	1.27	1.01
		Y17	3 661.1~3 664.7	原油	Es₄	Es₄	1.21	0.90
		Y170	3 817.4	油砂	Es₄	Es₄	0.81	1.04
		Y104	4 011.8~4 030.7	原油	Mz	Es₃	1.7	1.16
		Y173	4 112.0~4 127.7	原油	Es₄	Es₃	0.8	0.94

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