松辽盆地中央坳陷区三肇凹陷上白垩统青山口组一段页岩含油性特征

康淑娟; 仰云峰; 王华建; 江文滨; 何坤; 刘冉冉

doi:10.11781/sysydz202301089

松辽盆地中央坳陷区三肇凹陷上白垩统青山口组一段页岩含油性特征

doi: 10.11781/sysydz202301089

康淑娟^{1, 2, 3, 4,},
仰云峰⁵,
王华建⁶,
江文滨⁷,
何坤⁶,
刘冉冉⁸

1.
中国科学院深地资源装备技术工程实验室(中国科学院地质与地球物理研究所), 北京 100029
2.
中国科学院页岩气与地质工程重点实验室(中国科学院地质与地球物理研究所), 北京 100029
3.
中国科学院地球科学研究院, 北京 100029
4.
中国科学院大学, 北京 100049
5.
苏州中科地星创新技术研究所, 江苏苏州 215163
6.
中国石油勘探开发研究院, 北京 100083
7.
中国科学院力学研究所, 北京 100190
8.
大气边界层物理和大气化学国家重点实验室(中国科学院大气物理研究所), 北京 100029

基金项目:

中国科学院战略性先导科技专项 XDA14050204

详细信息

作者简介:
康淑娟(1983-), 女, 博士, 高级工程师, 从事深部资源勘探研究。E-mail: ksj@mail.iggcas.ac.cn

中图分类号: TE122.1
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- 被引次数: 0
出版历程
- 收稿日期: 2022-04-13
- 修回日期: 2022-11-14
- 刊出日期: 2023-01-28

Oil-bearing capacity of shale in the first member of Upper Cretaceous Qingshankou Formation, Sanzhao Sag, Central Depression, Songliao Basin

KANG Shujuan^{1, 2, 3, 4
,},
YANG Yunfeng⁵,
WANG Huajian⁶,
JIANG Wenbin⁷,
HE Kun⁶,
LIU Ranran⁸

1.
CAS Engineering Laboratory for Deep Resources Equipment and Technology (Institute of Geology and Geophysics, CAS), Beijing 100029, China
2.
CAS Key Laboratory of Shale Gas and Geoengineering (Institute of Geology and Geophysics, CAS), Beijing 100029, China
3.
Innovation Academy for Earth Sciences, CAS, Beijing 100029, China
4.
University of Chinese Academy of Sciences, Beijing 100049, China
5.
Suzhou Innovation Research Institute of Earth and Planetary Sciences, Suzhou, Jiangsu 215163, China
6.
PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
7.
Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
8.
State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (Institute of Atmospheric Physics, CAS), Beijing 100029, China

摘要

摘要: 松辽盆地中央坳陷区上白垩统青山口组湖相暗色页岩沉积蕴含了数量可观的页岩油资源，其中齐家—古龙凹陷青山口组页岩油勘探已取得重大突破。采用井场密闭热释方法，结合室内溶剂抽提和比较热解方法，综合评价松辽盆地中央坳陷区三肇凹陷青山口组一段页岩含油性特征。结果表明，研究层段青山口组页岩总有机碳含量介于1.48%~6.97%，平均3.40%，T_max值(抽提后)介于440~453 ℃，平均448 ℃，产率指数(PI)介于0.28~0.67，表明青山口组一段页岩处于大量生油阶段。井场和室内相结合的评价方法获得的页岩油含量介于4.00~19.49 mg/g，平均13.74 mg/g；其中游离油含量介于3.41~13.63 mg/g，平均8.70 mg/g；束缚油含量介于0.60~9.43 mg/g，平均5.04 mg/g。游离油由受限油和可动油组成，受限油含量介于1.81~8.49 mg/g，平均4.15 mg/g；可动油含量介于1.36~11.05 mg/g，平均4.55 mg/g，两者比例约为1∶1。以可动油含量平均值推算，可动油资源量为12 kg/m³，揭示三肇凹陷青山口组一段具有良好的可动页岩油资源潜力。
- 页岩油 /
- 密闭热释 /
- 溶剂抽提 /
- 岩石热解 /
- 青山口组 /
- 中央坳陷区 /
- 松辽盆地
Abstract: The lacustrine dark shale deposits of the Upper Cretaceous Qingshankou Formation in the Central Depression of Songliao Basin contain a considerable amount of shale oil resources, among which the shale oil exploration of the Qingshankou Formation in the Qijia-Gulong Sag has made a major breakthrough. In this paper, methods of sealed thermal release, combined with organic solvent extract and Rock-Eval, has been used for the comprehensive evaluation of shale oil-bearing capacity of the Qingshankou Formation. The TOC of shales from the Qingshankou Formation in the study area range from 1.48% to 6.97% with an average value of 3.40%. The values of T_max range from 440 ℃ to 453 ℃ with an average of 448 ℃ for the samples after extraction, and the production index ranges from 0.28 to 0.67, indicating a middle stage of oil generation window. The shale oil contents of the studied samples range from 4.00 mg/g to 19.49 mg/g with an average value of 13.74 mg/g. The contents of free oil range from 3.41 mg/g to 13.63 mg/g with an average value of 8.70 mg/g; while the content of adsorbed oil ranges from 0.60 mg/g to 9.43 mg/g with an average value of 5.04 mg/g. Free oil is made up of restricted oil and movable oil in the proportion of 1∶1. The content of restricted oil of the studied samples ranges from 1.81 mg/g to 8.49 mg/g with an average of 4.15 mg/g; while the content of movable oil ranges from 1.36 mg/g to 11.05 mg/g with an average of 4.55 mg/g. The movable oil resource is 12 kg/m³ based on the average content of mobile oil, which reveals good resource potential of movable shale oil in the first member of Qing-shankou Formation of the Sanzhao Sag.
- shale oil /
- sealed thermal release /
- solvent extract /
- Rock-Eval /
- Qingshankou Formation /
- Central Depression /
- Songliao Basin

HTML全文

图 1 松辽盆地中央坳陷区构造位置及构造单元划分

Figure 1. Tectonic location and units of Central Depression, Songliao Basin

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图 2 本文采用的实验分析流程

Figure 2. Workflow of the experiments used in this paper

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图 3 松辽盆地中央坳陷区Z井上白垩统青山口组一段页岩井场密闭热释分析结果

Figure 3. Results from sealed release experiments in site of the first member of Upper Cretaceous Qingshankou Formation, well Z, Central Depression, Songliao Basin

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图 4 密闭热释样品DCM抽提前后岩石热解参数对比

Figure 4. Comparison of Rock-Eval results before and after DCM extraction for samples after sealed release

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图 5 不同样品的TOC含量对比

Figure 5. Relationships of TOC values for different samples

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图 6 热释样品抽提前后S₂值与TOC含量之间的关系

Figure 6. Relationships between S₂ and TOC for sealed-released samples before and after DCM extraction

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图 7 游离油和残留油与TOC含量之间的关系

Figure 7. Relationships between free/adsorbed oil contents and TOC

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图 8 松辽盆地中央坳陷区Z井上白垩统青山口组一段页岩可动油、受限油和束缚油含量特征

Figure 8. Characteristics of free, restricted, and adsorbed oil contents of the first member of Upper Cretaceous Qingshankou Formation, well Z, Central Depression, Songliao Basin

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表 1 研究样品的实验数据

Table 1. Experimental data of samples

样号	ω(TOC)/%	井场密闭热释				抽提前岩石热解				抽提后岩石热解				热解烃/(mg·g^-1)	游离油/(mg·g^-1)	残留油/(mg·g^-1)	总油/(mg·g^-1)	受限油/(mg·g^-1)	可动油/(mg·g^-1)	OSI/(mg·g^-1)
样号	ω(TOC)/%	质量/g	S_g/(mg·g^-1)	S₀^*/(mg·g^-1)	S₁/(mg·g^-1)	ω(TOC)/%	S_1-re/(mg·g^-1)	S_2-re/(mg·g^-1)	T_max/℃	ω(TOC)/%	S_1-re/(mg·g^-1)	S_2-re/(mg·g^-1)	T_max/℃	热解烃/(mg·g^-1)	游离油/(mg·g^-1)	残留油/(mg·g^-1)	总油/(mg·g^-1)	受限油/(mg·g^-1)	可动油/(mg·g^-1)	OSI/(mg·g^-1)
1	2.24	1.10	0.26	1.06	2.99	2.71	0.79	12.37	440	2.48	0.37	8.10	442	4.31	5.11	4.27	9.38	3.31	1.80	266
2	2.51	1.09	0.32	0.91	3.06	2.52	1.09	12.41	439	2.24	0.30	7.34	446	4.30	5.39	5.08	10.47	3.07	2.32	227
3	1.60	1.00	0.25	0.95	2.43	1.57	0.54	6.11	438	1.51	0.29	3.93	440	3.63	4.16	2.19	6.35	1.91	2.25	306
4	0.91	1.06	0.55	1.57	4.22	3.06	0.61	14.57	443	2.91	0.28	9.20	448	6.33	6.95	5.38	12.33	3.74	3.21	155
5	2.36	1.05	0.49	1.61	3.91	2.20	0.70	12.23	440	1.96	0.36	7.65	444	6.01	6.72	4.58	11.30	2.68	4.04	144
6	4.63	1.11	0.88	1.38	3.81	4.14	0.34	21.32	447	4.35	0.12	16.40	450	6.07	6.41	4.92	11.34	5.05	1.36	214
7	6.69	1.15	0.87	2.16	6.49	6.97	0.54	30.12	449	6.62	0.36	20.69	453	9.52	10.06	9.43	19.49	8.49	1.57	217
8	3.61	1.13	0.60	1.69	5.05	4.02	1.26	19.47	447	4.09	0.63	14.51	452	7.34	8.60	4.96	13.56	4.91	3.69	277
9	4.83	1.05	0.72	1.89	5.75	4.42	1.23	21.69	445	4.49	0.45	16.57	452	8.36	9.59	5.12	14.71	5.39	4.20	309
10	4.02	1.04	0.64	1.81	5.07	3.01	0.83	16.22	446	3.21	0.56	12.57	450	7.52	8.34	3.65	11.99	3.67	4.67	644
11	3.18	1.12	0.78	1.83	6.61	3.61	1.94	17.96	444	3.51	0.49	11.52	448	9.22	11.15	6.44	17.59	4.41	6.75	248
12	2.23	1.09	0.69	1.95	8.88	2.12	2.11	12.52	437	1.81	0.70	6.69	443	11.52	13.63	5.83	19.46	2.58	11.05	187
13	1.65	1.16	0.70	1.79	5.16	3.55	1.16	18.42	449	3.77	0.64	13.67	452	7.65	8.81	4.75	13.56	4.33	4.48	273
14	6.29	1.05	0.70	2.37	7.24	6.05	0.99	23.33	448	5.72	0.54	17.46	450	10.31	11.30	5.87	17.17	7.37	3.92	231
15	3.60	1.09	0.86	1.78	5.74	3.68	1.66	15.45	439	3.10	1.16	10.34	445	8.38	10.04	5.11	15.15	4.49	5.55	226
16	5.22	1.05	0.60	2.05	6.79	4.66	1.34	19.17	448	4.28	0.81	14.10	451	9.45	10.79	5.07	15.86	5.69	5.10	297
17	4.07	1.13	0.30	1.43	5.54	3.96	1.66	20.30	445	3.93	0.47	14.56	449	7.27	8.93	5.74	14.67	4.83	4.10	267
18	3.42	1.16	0.42	1.65	5.38	3.11	1.79	17.49	445	2.94	0.82	11.65	448	7.45	9.24	5.84	15.08	3.79	5.45	323
19	3.03	1.06	0.14	0.99	5.18	2.83	1.26	16.52	440	2.65	0.27	11.01	445	6.31	7.58	5.51	13.09	3.46	4.12	447
20	3.22	1.05	0.36	1.64	6.05	3.00	1.66	16.48	440	3.01	0.71	10.69	450	8.05	9.70	5.79	15.49	3.66	6.04	275
21	2.54	1.04	0.40	1.17	5.70	2.16	2.40	12.49	439	1.82	1.15	8.36	448	7.27	9.66	4.14	13.80	2.64	7.02	225
22	3.31	1.04	0.42	2.09	6.72	3.88	1.46	19.12	442	3.90	0.65	12.73	450	9.22	10.68	6.39	17.07	4.73	5.95	236
23	4.64	1.05	0.62	2.27	6.62	4.71	1.09	21.93	450	4.63	0.53	15.07	450	9.51	10.60	6.86	17.45	5.75	4.85	351
24	4.50	1.12	0.55	1.84	6.13	4.23	1.48	21.97	450	4.06	0.70	14.67	449	8.51	9.99	7.30	17.29	5.16	4.83	424
25	3.39	1.02	0.91	2.54	7.39	3.46	1.32	17.48	442	3.39	0.66	12.62	450	10.83	12.15	4.86	17.01	4.22	7.93	291
26	1.84	1.03	0.39	1.09	5.27	1.93	1.44	10.12	441	1.89	0.52	6.13	446	6.75	8.19	3.98	12.18	2.36	5.84	230
27	1.72	1.04	0.17	0.86	4.50	2.19	0.86	7.13	445	2.21	0.65	5.73	448	5.53	6.39	1.40	7.79	2.67	3.72	188
28	1.44	1.03	0.14	0.47	2.43	1.48	0.36	3.67	445	1.56	0.14	3.07	449	3.04	3.41	0.60	4.00	1.81	1.60	214

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