涠西南凹陷流沙港组二段优质烃源岩判别及其控油作用

doi:10.11743/ogg20200210

摘要/Abstract

摘要：

针对北部湾盆地涠西南凹陷流沙港组湖相优质烃源岩发育特征及其控油作用不清的实际，基于烃源岩生、排烃基本原理，利用有机地化方法建立判别优质烃源岩的方法，并确定了其分布和对油气分布的控制作用。流沙港组泥岩是涠西南凹陷的主要烃源岩，从下到上分为流三段、流二段和流一段，流二段为主力烃源岩。依据生、排烃基本原理，利用烃源岩TOC含量与热解S₁、氯仿沥青“A”含量的关系确定的流沙港组湖相优质烃源岩的TOC含量界限值为2%左右。流二段底部黑色页岩TOC含量均大于2%，母质类型好，生烃潜力高，均属于优质烃源岩；部分暗色泥岩属于优质烃源岩。与流二段底部黑色页岩有亲缘关系的原油既可在黑色页岩层段之下近源运移、聚集，也可沿流二段之下的流三段砂体长距离侧向运移而在构造高部位聚集；与暗色泥岩有亲缘关系的原油主要在凹陷内部优质烃源岩层之上的流一段—涠洲组聚集，断裂为近距离垂向运移通道，源控特征显著。

关键词: 烃源岩, 黑色页岩, 暗色泥岩, 流沙港组, 涠西南凹陷, 北部湾盆地

Abstract:

In the Weixi'nan Sag of the Beibuwan Basin, the high-quality lacustrine source rock in the Liushagang Fm has been poorly understood in terms of its characteristics and its controls on hydrocarbon distribution.To this end, we establish an organic geochemical method to identify quality source rocks, and reveal the source rock distribution pattern and its controls on hydrocarbon distribution, based on the fundamental mechanisms of hydrocarbon generation and expulsion for source rocks.Among others, the major source rocks for the Weixi'nan Sag are the Liushagang Fm shale, which can be divided into three intervals, namely the Liu 3, Liu 2 and Liu 1 members downwardly, with the Liu 2 member as the major zone.Based on the principle of hydrocarbon generation and expulsion for source rocks as well as relations between the TOC content, and the pyrolysis S₁ and chloroform bitumen "A" content of mature source rocks, we identify the lower limit value of TOC content of the high-quality lacustrine source rocks in the Liushagang Fm is about 2%.The black shale at the bottom of the Liu 2 member (El₂) with a TOC content higher than 2%, contains oil-prone organic matters with high hydrocarbon-generating potential, and is high-quality source rocks.Part of the dark mudstone is also high-quality source rocks.The crude oil expelled from the black shale at the bottom of Liu 2 member could migrate in short distance and accumulate under the black shale interval, or could migrate laterally in long distance along the sand bodies in the Liu 3 member and accumulate at higher structures.However, the crude oil expelled from the dark mudstone mainly accumulates in the Liu 1 member and Weizhou Fm, which are vertically above the quality source rocks inside the sag, with faults as the vertical pathway for migration and thus the accumulation is directly characterized by source rock distribution.

Key words: source rock, black shale, dark mudstone, Liushagang Fm, Weixi'nan Sag, Beibuwan Basin

中图分类号:

TE122.1

高岗,徐新德,刘诗局,等. 涠西南凹陷流沙港组二段优质烃源岩判别及其控油作用[J]. 石油与天然气地质, 2020, 41(2): 339-347. doi: 10.11743/ogg20200210 Gang Gao,Xinde Xu,Shiju Liu,et al. Organic geochemistry identification of high-quality source rocks in the 2nd member of Liushagang Fm and its controls on petroleum occurrence in the Weixi'nan Sag, Beibuwan Basin[J]. Oil & Gas Geology, 2020, 41(2): 339-347. doi: 10.11743/ogg20200210

图/表 9

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参考文献 34

1	朱伟林, 江文荣. 北部湾盆地涠西南凹陷断裂与油气藏[J]. 石油学报, 1998, 19 (3): 6- 11.
	Zhu Weilin , Jiang Wenrong . Fault and reservoir in weishan sag, Beibu Gulf Basin[J]. Acta Petrolei Sinica, 1998, 19 (3): 6- 11.
2	董贵能, 李俊良. 北部湾盆地涠西南凹陷流一段非构造油气藏[J]. 石油勘探与开发, 2010, 37 (5): 552- 560.
	Dong Guineng , Li Junliang . Subtle hydrocarbon reservoirs in Liu-1 Member of the Weixi'nan Sag, Beibuwan Basin, China[J]. Petroleum Exploration and Development, 2010, 37 (5): 552- 560.
3	胡望水, 吴婵, 梁建设, 等. 北部湾盆地构造迁移特征及对油气成藏的影响[J]. 石油与天然气地质, 2011, 32 (06): 920- 927.
	Hu Wangshui , Wu Chan , Liang Jianshe , et al. Tectonic transport characteristics and their influences on hydrocarbon accumulation in Beibuwan Basin[J]. Oil & Gas Geology, 2011, 32 (06): 920- 927.
4	邹明生, 曾小明, 吴碧波, 等. 北部湾盆地涠西南凹陷涠洲组二段油气成藏特征分析[J]. 石油实验地质, 2018, 40 (3): 330- 336.
	Zou Mingsheng , Zeng Xiaoming , Wu Bibo , et al. Hydrocarbon accumulation characteristics of the 2nd member of Weizhou Formation in the Weixinan Sag, Beibu Gulf Basin[J]. Petroleum Geology & Experiment, 2018, 40 (3): 330- 336.
5	姜平, 张建光, 姚光庆, 等. 涠西南凹陷11-7区块流沙港组沉积体系构成及演化特征[J]. 地质科技情报, 2013, 02, 97- 104.
	Jiang Ping , Zhang Jianguang , Yao Guangqing , et al. Sedimentary system and evolution of Liushagang Formation, 11-7 Block of Weixi'nan Depression[J]. Geological Science and Technology Information, 2013, 02, 97- 104.
6	裴健翔, 董贵能, 朱其. 北部湾盆地涠西南凹陷流一段强制湖退沉积体的特征及其油气地质意义[J]. 石油与天然气地质, 2016, 37 (04): 520- 527.
	Pei Jianxiang , Dong Guineng , Zhu Qi . Characteristics and petroleum geological significance of lacustrine forced regressive deposits in the 1st Member of Liushagang Formation in Weixi'nan Sag, Beibuwan Basin[J]. Oil & Gas Geology, 2016, 37 (04): 520- 527.
7	包建平, 刘玉瑞, 朱翠山, 等. 北部湾盆地原油地球化学特征与成因类型[J]. 石油与天然气地质, 2007, (02): 293- 298.
	Bao Jianping , Liu Yurui , Zhu Cuishan , et al. Geochemical characteristics and genetic types of crude oils[J]. Oil & Gas Geology, 2007, (02): 293- 298.
8	游君君, 徐新德, 李里, 等. 涠西南凹陷流沙港组二段烃源岩有机相研究[J]. 中国矿业, 2012, 21 (11): 78- 91.
	You Junjun , Xu Xinde , Li Li , et al. Organic facies of source rocks of the second member of Liushagang Formation in the Weixi'nan Sag[J]. China Mining Magazine, 2012, 21 (11): 78- 91.
9	黄保家, 黄合庭, 吴国暄, 等. 北部湾盆地始新统湖相富有机质页岩特征及成因机制[J]. 石油学报, 2013, 33 (1): 25- 31.
	Huang Baojia , Huang Heting , Wu Guoxuan , et al. Geochemical characteristics and formation mechanism of Eocene lacustrine organic-rich shales in the Beibuwan Basin[J]. Acta Petrolel Sinica, 2013, 33 (1): 25- 31.
10	郭飞飞, 郭小文, 孙建峰, 等. 北部湾盆地涠西南凹陷C洼烃源岩热史及成熟史模拟[J]. 海洋地质与第四纪地质, 2010, 30 (2): 87- 93.
	Guo Feifei , Guo Xiaowen , Sun Jianfeng , et al. Thermal history and maturity history simulation of c-depression source rocks in weishan sag, Beibu Gulf Basin[J]. Marine Geology & Quaternary Geology, 2010, 30 (2): 87- 93.
11	陈伟煌. 北部湾盆地生油层成熟门限深度与石油初次运移的探讨[J]. 海洋地质研究, 1982, 2 (2): 21- 26.
	Chen Weihuang . Thethreshold maturity depth of source beds and The primary migration of oil in the Beibu Gulf Basin[J]. Marine Geological Research, 1982, 2 (2): 21- 26.
12	康西栋, 李思田, 李雨梁, 等. 北部湾盆地今古地温场特征及热史演化[J]. 长春地质学院学报, 1995, 25 (2): 173- 177.
	Kang Xidong , LI Sitian , LI Yuliang , et al. Study on the geothermal characteristics and thermal history of Beibuwan Basin[J]. Journal of Changchun University of Earth Science, 1995, 25 (2): 173- 177.
13	肖军, 王华, 马丽娟, 等. 北部湾盆地涠西南凹陷W61潜山油气成藏条件分析[J]. 新疆石油学院学报, 2003, 15 (4): 30- 37.
	Xiao Jun , Wang Hua , Ma Lijuan , et al. Characteristics of buried hill oil pool of W61 area in Weixi'nan depression, Beibuwan Basin[J]. Jorunal of Xinjiang Petroleum Institute, 2003, 15 (4): 30- 37.
14	徐新德, 王碧维, 李旭红, 等. 北部湾盆地涠西南凹陷流沙港组隐蔽油气藏油源及成藏特征[J]. 天然气地球科学, 2012, 23 (1): 92- 98.
	Xu Xinde , Wang Biwei , Li Xuhong , et al. Oil sources of concealed reservoirs in Liushagang Formation of the Weixi'nan Sag and accumulation feature, Beibuwan basin[J]. Natural Gas Geoscience, 2012, 23 (1): 92- 98.
15	张启明, 苏厚熙. 北部湾盆地石油地质[J]. 海洋地质与第四纪地质, 1989, 9 (3): 73- 82.
	Zhang Qiming , Su Houxi . Petroleum Geology of theBeibu Gulf Basin[J]. Marine Geology & Quaternary Geology, 1989, 9 (3): 73- 82.
16	谢泰俊, 张通彩. 北部湾盆地东北部含油气系统及勘探方向[J]. 中国海上油气, 1996, 10 (5): 299- 305.
	Xie Taijun , Zhang Tongcai . The Petroleum system and exploration targets in the northeastern part ofBeibu Gulf Basin[J]. China offshore oil and Gas(Geology), 1996, 10 (5): 299- 305.
17	周健, 单玄龙, 郝国丽, 等. 松江盆地白垩系烃源岩地球化学特征及油源对比[J]. 石油与天然气地质, 2018, 39 (3): 578- 586.
	Zhou Jian , Shan Xuanlong , Hao Guoli , et al. Geochemical characteristics of Cretaceous source rocks and oil-source correlation in the Songjiang Basin[J]. Oil & Gas Geology, 2018, 39 (3): 578- 586.
18	朱光有, 金强, 张水昌, 等. 东营凹陷沙河街组湖相烃源岩组合特征[J]. 地质学报, 2001, 78 (3): 416- 427.
	Zhu Guangyou , Jin Qiang , Zhang Shuichang , et al. Characteristics of lacustrine source rock assemblage of shahejie formation in dongying sag[J]. Acta Geologica Sinica, 2001, 78 (3): 416- 427.
19	朱连丰. 银根-额济纳旗盆地主力烃源岩生烃热模拟实验研究[J]. 石油实验地质, 2019, 41 (5): 731- 738.
	Zhu Lianfeng . Pyrolysis hydrocarbon generation of the main source rock in Yin'gen-E'ji'naqi Basin[J]. Petroleum Geology & Experiment, 2019, 41 (5): 731- 738.
20	王媛, 汪少勇, 李建忠, 张义杰. 辽西雷家地区沙四段中-低熟烃源岩排烃效率与致密油-页岩油勘探前景[J]. 石油与天然气地质, 2019, 40 (4): 810- 821.
	Wang Yuan , Wang Shaoyong , Li Jianzhong , Zhang Yijie . The hydrocarbon expulsion efficiency of medium-low mature source rocks and tight-shale oil potential in the Es⁴, Leijia area in West Depression, Liaohe Basin[J]. Oil & Gas Geology, 2019, 40 (4): 810- 821.
21	侯读杰, 张善文, 肖建新, 等. 济阳坳陷优质烃源岩特征与隐蔽油气藏的关系分析[J]. 地学前缘, 2008, 15 (2): 137- 146.
	Hou Dujie , Zhang Shanwen , Xiao Jianxin , et al. The excellent source rocks and accumulation of stratigraphic and traps in the Jiyang depression, Bohai bay basin[J]. China Earth Science Frontiers, 2008, 15 (2): 137- 146.
22	王金萍, 黄泽贵, 张云献, 等. 东濮凹陷优质烃源岩的岩性特征及宏观展布规律[J]. 断块油气田, 2018, 25 (5): 549- 554.
	Wang Jinping , Huang Zegui , Zhang Yunxian , et al. Lithological characteristics and macroscopic distribution rule of high-quality hydrocarbon source rocks in Dongpu Depression[J]. Fault-Block Oil and Gas Field, 2018, 25 (5): 549- 554.
23	郑红菊, 董月霞, 朱光有, 等. 南堡凹陷优质烃源岩的新发现[J]. 石油勘探与开发, 2007, 34 (4): 385- 392.
	Zheng Hongju , Dong Yuexia , Zhu Guangyou , et al. High-quality source rocks in Nanpu Sag[J]. Petroleum Exploration and Development, 2007, 34 (4): 385- 392.
24	卢双舫, 马延伶, 曹瑞成, 等. 优质烃源岩评价标准及其应用:以海拉尔盆地乌尔逊凹陷为例[J]. 地球科学-中国地质大学学报, 2012, 37 (3): 535- 544.
	Lu Shuangfang , Ma Yanling , Cao Ruicheng , et al. Evaluation Criteria of High-Qualitysource rocks and Its applications:taking the Wuerxun Sag in Hailaer Basin as an Example[J]. Earth Science-Journal of China University of Geosciences, 2012, 37 (3): 535- 544.
25	王力, 金强, 林腊梅, 等. 柴达木盆地西部古近系一新近系优质烃源岩特征[J]. 天然气工业, 2009, 29 (2): 23- 26.
	Wang Li , Jin Qiang , Lin Lamei , et al. Characteristics of quality Tertiary source rocks in west Qaidam basin[J]. Nartural gas industry, 2009, 29 (2): 23- 26.
26	梁刚, 甘军, 李兴, 等. 琼东南盆地浅水区与深水区烃源岩热演化差异性影响因素研究[J]. 特种油气藏, 2019, 26 (1): 69- 74.
	Liang Gang , Gan Jun , Li Xing , et al. Influential factors of thermal evolution difference of source rocks in shallow and deep water areas of Southeastern Hainan Basin[J]. Special Oil & Gas Reservoirs, 2019, 26 (1): 69- 74.
27	王健, 操应长, 李俊良. 北部湾盆地涠西南凹陷古近系层序结构与非构造圈闭[J]. 石油勘探与开发, 2012, 39 (3): 304- 312.
	Wang Jian , Cao Yingchang , Li Junliang . Sequence structure and non-structural traps of the Paleogene in the Weixi'nan Sag, Beibuwan Basin[J]. Petroleum Exploration and Development, 2012, 39 (3): 304- 312.
28	高岗, 柳广弟, 付金华, 等. 确定有效烃源岩有机质丰度下限的一种新方法[J]. 西安石油大学学报(自然科学版), 2012, 27 (2): 22- 27.
	Gao Gang , Liu Guangdi , Fu Jinhua , et al. A new method for determining the lower limits of the organic matter abundance parameters of effective source rock:taking the Triassic dark mudstones of Yanchang Formation in Longdong region, Ordos Basin as an example[J]. Journal of Xi'an Shiyou University(Natural Science Edition), 2012, 27 (2): 22- 27.
29	祝厚勤, 刘平兰, 庞雄奇, 等. 生烃潜力法研究烃源岩排烃特征的原理及应用[J]. 中国石油勘探, 2008, 03, 5- 9+8.
	Zhu Houqin , Liu Pinglan , Pang Xiongqi , et al. The principle and application of hydrocarbon generation potential method to study the characteristics of hydrocarbon expulsion from source rocks[J]. Petroleum Geology, 2008, 03, 5- 9+8.
30	霍秋立, 曾花森, 张晓畅, 等. 松辽盆地北部青山口组一段有效烃源岩评价图版的建立及意义[J]. 石油学报, 2012, 03, 379- 384.
	Zhai Qiuli , Zeng Huasen , Zhang Xiaochang , et al. An evaluation diagram of effective source rocks in the first member of Qingshankou Formation innorthern Songliao Basin and its implication[J]. Acta Petrolel Sinica, 2012, 03, 379- 384.
31	Mendelson J D and Toksoz M N.1985.Source rock characterization using multivariate analysis of log data[A].SPWLA 26th Annual Logging Symposium, Paper UU.
32	Herron S L.1986.Derivation of a total organic carbon log for source rock evaluation[A].SPWLA 27th Annual logging Symposium, Paper H H.
33	高岗, 王绪龙, 柳广弟, 等. 准噶尔盆地上三叠统源岩TOC含量预测方法[J]. 高校地质学报, 2012, 18 (4): 1- 6.
	Gao Gang , Wang Xulong , Liu Guangdi , et al. Prediction method and of organic carbon abundance of dark color mudstones in the Triassic system of Junggar Basin[J]. Geological Journal of China Univerdities, 2012, 18 (4): 1- 6.
34	刘诗局, 高岗, 徐新德, 等. 北部湾盆地涠西南凹陷涠洲11-4-涠洲11-4N油田油气运聚的源控特征[J]. 天然气地球科学, 2019, 30 (9): 1312- 1318.
	Liu Shiju , Gao Gang , Xu Xinde , et al. Source rock controlling effects on hydrocarbon migration and accumulation of Weizhou11-4 & Weizhou11-4N oil fields in Weixi'nan Sag, Beibuwan Basin[J]. Natural Gas Geoscience, 2019, 30 (9): 1312- 1318.

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