古龙凹陷姚一段致密油藏成藏主控因素及成藏模式

doi:10.7657/XJPG20230601

摘要/Abstract

摘要：

综合地震、地质、地球化学、生产测试等资料，在古龙凹陷姚一段致密油藏类型和分布规律研究的基础上，明确其成藏主控因素及成藏模式。结果表明：古龙凹陷姚一段发育5种致密油藏，由古龙向斜向周缘斜坡由砂岩透镜体油藏变为上倾尖灭岩性油藏、断层-岩性油藏和断块油藏，鼻状凸起顶部为断背斜油藏；致密油藏的形成受烃源岩及超压分布、圈闭类型、油源断裂和优质储集层联合控制，青一段湖相泥岩不仅是致密油藏的物质基础，其形成的异常高压是古龙向斜致密油充注的主要动力；大规模成藏前各类圈闭已形成，两侧高部位构造圈闭和构造-岩性圈闭是致密油运移指向区以及有利的聚集部位，主成藏期开启的反转期断层是致密油垂向运移的主要通道，分流河道优质储集层是致密油聚集的有利储集层；各构造单元成藏主控因素和模式存在差异，古龙向斜为“超压驱动、断层垂向输导、局部甜点富集”成藏模式，新站鼻凸为“超压+浮力接力驱动、断层垂向输导、有利圈闭聚集”成藏模式，新肇斜坡为“超压+浮力联合驱替、断-砂接力运移、有利储集层聚集”成藏模式。

关键词: 松辽盆地, 古龙凹陷, 致密油藏, 姚家组, 青山口组, 主控因素, 成藏模式, 分布特征

Abstract:

Based on the seismic, geological, geochemical, and production testing data, the types and distribution patterns of the tight oil reservoirs in the first member of Yaojia formation (Yao 1 member) in the Gulong sag were analyzed, and then the controlling factors and models of hydrocarbon accumulation in these reservoirs were clarified. The results show that five types of tight oil reservoirs are developed in the Yao 1 member such as lenticular sandstone reservoir in the Gulong syncline, updipping pinch-out lithologic reservoir, fault-lithologic reservoir, fault-block reservoir, and fault-anticline reservoir at the top of the nose-like bulge. The formation of tight oil reservoirs is jointly controlled by source rock and overpressure distribution, traps, oil-source faults, and high-quality reservoir beds. The lacustrine mudstones in the first member of Qingshankou formation (Qing 1 member) serve as the material basis for tight oil reservoirs and also create abnormally-high pressure that drove oil charging into the Gulong syncline. Before extensive hydrocarbon accumulation, various traps had been formed, including structural traps and structural-lithological traps at high positions on both sides, which act as the tight oil migration destinations and favorable accumulation sites. The reversal-stage faults that opened during the main oil accumulation phase serve as the primary pathways for vertical oil migration, and high-quality distributary-channel reservoir beds are favorable for tight oil accumulation. The structural units are different in controlling factors and models of hydrocarbon accumulation. In the Gulong syncline, the hydrocarbon accumulation model is “driven by overpressure, vertical migration along faults, and enrichment in local sweet spots”. In the Xinzhan nose-like bulge, the hydrocarbon accumulation model is “first driven by overpressure then by buoyancy, vertical migration along faults, and accumulation in favorable traps”. In the Xinzhao slope, the hydrocarbon accumulation model is “driven by overpressure + buoyancy, fault-sandbody relay-migration, and accumulation in favorable reservoir beds”.

Key words: Songliao basin, Gulong sag, tight oil reservoir, Yaojia formation, Qingshankou formation, controlling factor, hydrocarbon accumulation model, distribution characteristic

中图分类号:

TE122.1

刘萍. 古龙凹陷姚一段致密油藏成藏主控因素及成藏模式[J]. 新疆石油地质, 2023, 44(6): 635-645.

LIU Ping. Controlling Factors and Models of Hydrocarbon Accumulation in Tight Oil Reservoirs of Yao 1 Member in Gulong Sag[J]. Xinjiang Petroleum Geology, 2023, 44(6): 635-645.

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参考文献 25

[1]	贾承造, 邹才能, 李建忠, 等. 中国致密油评价标准、主要类型、基本特征及资源前景[J]. 石油学报, 2012, 33(3):343-350. doi: 10.7623/syxb201203001
	JIA Chengzao, ZOU Caineng, LI Jianzhong, et al. Assessment criteria,main types,basic features and resource prospects of the tight oil in China[J]. Acta Petrolei Sinica, 2012, 33(3):343-350.
[2]	林铁锋, 白云风, 赵莹, 等. 松辽盆地古龙凹陷青一段细粒沉积岩旋回地层分析及沉积充填响应特征[J]. 大庆石油地质与开发, 2021, 40(5):29-39.
	LIN Tiefeng, BAI Yunfeng, ZHAO Ying, et al. Cyclic stratigraphy of fine grained sedimentary rocks and sedimentary filling response characteristics of Member Qing-1 in Gulong sag,Songliao basin[J]. Petroleum Geology & Oilfield Development in Daqing, 2021, 40(5):29-39.
[3]	王岚, 曾雯婷, 夏晓敏, 等. 松辽盆地齐家-古龙凹陷青山口组黑色页岩岩相类型与沉积环境[J]. 天然气地球科学, 2019, 30(8):1125-1133.
	WANG Lan, ZENG Wenting, XIA Xiaomin, et al. Study on lithofacies types and sedimentary environment of black shale of Qingshankou formation in Qijia-Gulong depression,Songliao basin[J]. Natural Gas Geoscience, 2019, 30(8):1125-1133.
[4]	吴伟涛, 赵靖舟, 蒙启安, 等. 松辽盆地齐家地区高台子油层致密砂岩油成藏机理[J]. 石油与天然气地质, 2021, 42(6):1376-1388.
	WU Weitao, ZHAO Jingzhou, MENG Qi’an, et al. Accumulation mechanism of tight sandstone oil in Gaotaizi reservoir in Qijia area,Songliao basin[J]. Oil & Gas Geology, 2021, 42(6):1376-1388.
[5]	马中振, 戴国威, 盛晓锋, 等. 松辽盆地北部连续型致密砂岩油藏的认识及其地质意义[J]. 中国矿业大学报, 2013, 42(2):221-229.
	MA Zhongzhen, DAI Guowei, SHENG Xiaofeng, et al. Tight sand oil reservoir of continuous type in northern Songliao basin and its geological significance[J]. Journal of China University of Mining & Technology, 2013, 42(2):221-229.
[6]	张冰. 松辽盆地北部页岩储层地质评价及关键技术研究[J]. 特种油气藏, 2022, 29(5):72-79. doi: 10.3969/j.issn.1006-6535.2022.05.010
	ZHANG Bing. Study on geological evaluation and key technologies for shale reservoirs in northern Songliao basin[J]. Special Oil & Gas Reservoirs, 2022, 29(5):72-79.
[7]	夏青. 新肇油田古628区块葡萄花油层油水分布规律及主控因素[J]. 大庆石油地质与开发, 2020, 39(5):25-33.
	XIA Qing. Oil-water distribution laws and main controlling factors of Putaohua reservoirs in Block Gu628 of Xinzhao oilfield[J]. Petroleum Geology & Oilfield Development in Daqing, 2020, 39(5):25-33.
[8]	曲方春, 王鸿军, 佟斯琴, 等. 古龙南凹陷葡萄花油层储层微观孔隙结构特征与油水分布关系[J]. 大庆石油地质与开发, 2016, 35(5):1-6.
	QU Fangchun, WANG Hongjun, TONG Siqin, et al. Relationships between the microscopic pore structural characteristics and oil-water distribution for Putaohua oil reservoirs in south Gulong sag[J]. Petroleum Geology & Oilfield Development in Daqing, 2016, 35(5):1-6.
[9]	刘芳, 刘性全, 刘宗堡, 等. 基于储层构型理论的致密砂岩成藏过程分析:以松辽盆地古龙向斜葡萄花油层为例[J]. 石油与天然气地质, 2018, 39(2):268-278.
	LIU Fang, LIU Xingquan, LIU Zongbao, et al. Hydrocarbon accumulation analysis of tight sandstone based on reservoir architecture theory:A case from Putaohua reservoir in the Gulong syncline,Songliao basin[J]. Oil & Gas Geology, 2018, 39(2):268-278.
[10]	林承焰, 曹铮, 任丽华, 等. 松辽盆地南部大情字井向斜区葡萄花油层石油富集规律及成藏模式[J]. 吉林大学学报(地球科学版), 2016, 46(6):1598-1610.
	LIN Chengyan, CAO Zheng, REN Lihua, et al. Oil enrichment regularity and accumulation modes of Putaohua reservoir in Daqingzijing syncline area,southern Songliao basin[J]. Journal of Jilin University(Earth Science Edition), 2016, 46(6):1598-1610.
[11]	佟斯琴, 李斌, 罗群, 等. 松辽盆地古龙南凹陷葡萄花油层储层单砂层沉积微相研究及有利砂体预测[J]. 石油与天然气地质, 2014, 35(4):517-525.
	TONG Siqin, LI Bin, LUO Qun, et al. Single-sandstone-layer sedimentary microfacies and favourable sandbody prediction of Putaohua reservoir in south Gulong sag,Songliao basin[J]. Oil & Gas Geology, 2014, 35(4):517-525.
[12]	王鸿军, 张海宁. 古龙南凹陷葡萄花油层储集空间及主控因素[J]. 西南石油大学学报(自然科学版), 2017, 39(5):10-18.
	WANG Hongjun, ZHANG Haining. Storage volume and control factors of the Putaohua reservoir in the south Gulong sag[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2017, 39(5):10-18.
[13]	SHENG Anqi, LIU Yikun, WANG Xin, et al. The geological characteristics and exploration of continental tight oil:An investigation in China[J]. Journal of Petroleum Exploration and Production Technology, 2019, 9(3):1651-1658. doi: 10.1007/s13202-018-0606-5
[14]	陈彬滔, 潘树新, 方乐华, 等. 松辽盆地齐家—古龙凹陷青山口组泥页岩层段储层特征[J]. 天然气地球科学, 2016, 27(2):298-308.
	CHEN Bintao, PAN Shuxin, FANG Lehua, et al. Reservoir characteristics of mudstone(shale) interval in the Qingshankou formation,Qijia-Gulong sag,Songliao basin,northeast China[J]. Natural Gas Geoscience, 2016, 27(2):298-308.
[15]	佟斯琴, 李斌, 罗群, 等. 古龙南凹陷葡萄花油层储层层序地层及沉积体系研究[J]. 断块油气田, 2014, 21(6):681-691.
	TONG Siqin, LI Bin, LUO Qun, et al. Study on sequence stratigraphy and sedimentary of Putaohua oil reservoir in south Gulong depression[J]. Fault-Block Oil & Gas Field, 2014, 21(6):681-691.
[16]	陈旋, 王居峰, 肖冬生, 等. 台北凹陷下侏罗统致密砂岩气成藏条件与勘探方向[J]. 新疆石油地质, 2022, 43(5):505-512.
	CHEN Xuan, WANG Jufeng, XIAO Dongsheng, et al. Accumulation conditions and exploration direction of Lower Jurassic tight sandstone gas reservoirs in Taibei sag[J]. Xinjiang Petroleum Geology, 2022, 43(5):505-512.
[17]	张坦, 齐育楷, 姚威, 等. 塔里木盆地库车坳陷南斜坡三叠系烃源岩热演化特征及油气地质意义[J]. 石油实验地质, 2022, 44(6):1018-1027.
	ZHANG Tan, QI Yukai, YAO Wei, et al. Thermal evolution characteristics of Triassic source rocks and their petroleum geological significance on the southern slope of Kuqa depression,Tarim basin[J]. Petroleum Geology & Experiment, 2022, 44(6):1018-1027.
[18]	BAI Yubin, ZHAO Jingzhou, WU Weitao. Methods to determine the upper limits of petrophysical properties in tight oil reservoirs:Examples from the Ordos and Songliao basins[J]. Journal of Petroleum Science and Engineering, 2020, 38(6):524-534.
[19]	白桦, 杨晓, 熊艳, 等. 川中地区凉高山组湖岸线识别及致密油气有利区[J]. 天然气工业, 2022, 42(2):40-49.
	BAI Hua, YANG Xiao, XIONG Yan, et al. Determination of Lianggaoshan formation lake strandline and favorable tight oil and gas areas in the central Sichuan basin[J]. Natural Gas Industry, 2022, 42(2):40-49.
[20]	罗安湘, 喻建, 刘显阳, 等. 鄂尔多斯盆地中生界石油勘探实践及主要认识[J]. 新疆石油地质, 2022, 43(3):253-260.
	LUO Anxiang, YU Jian, LIU Xianyang, et al. Practices and congitions of petroleum exploration in Mesozoic,Ordos basin[J]. Xinjiang Petroleum Geology, 2022, 43(3):253-260.
[21]	唐勇, 曹剑, 何文军, 等. 从玛湖大油区发现看全油气系统地质理论发展趋势[J]. 新疆石油地质, 2021, 42(1):1-9.
	TANG Yong, CAO Jian, HE Wenjun, et al. Development tendency of geological theory of total petroleum system:Insights from the discovery of Mahu large oil province[J]. Xinjiang Petroleum Geology, 2021, 42(1):1-9.
[22]	侯启军, 冯子辉, 邹玉良. 松辽盆地齐家-古龙凹陷油气成藏期次研究[J]. 石油实验地质, 2005, 27(4):390-394.
	HOU Qijun, FENG Zihui, ZOU Yuliang. Study on the pool-forming periods of oil and gas in Qijia-Gulong in Songliao basin[J]. Petroleum Geology & Experiment, 2005, 27(4):390-394.
[23]	任颖慧, 闫明琦, 李闻虚, 等. 松辽盆地齐家-古龙凹陷泥页岩特征及成藏期次[J]. 成都理工大学学报(自然科学版), 2019, 46(6):660-666.
	REN Yinghui, YAN Mingqi, LI Wenxu, et al. Study on shale characteristics and reservoir accumulation period in Qijia-Gulong depression,Songliao basin,China[J]. Journal of Chengdu University of Technology(Science & Technology Edition), 2019, 46(6):660-666.
[24]	唐勇, 雷德文, 曹剑, 等. 准噶尔盆地二叠系全油气系统与源内天然气勘探新领域[J]. 新疆石油地质, 2022, 43(6):654-662.
	TANG Yong, LEI Dewen, CAO Jian, et al. Total petroleum system and inner-source natural gas exploration in Permian strata of Junggar basin[J]. Xinjiang Petroleum Geology, 2022, 43(6):654-662.
[25]	周翔, 李绍虎. 基于层序地层格架的成岩作用研究:以徐家围子断陷沙河子组为例[J]. 吉林大学学报(地球科学版), 2022, 52(6):1800-1812.
	ZHOU Xiang, LI Shaohu. Diagenesis in sequence stratigraphical framework:A case study on Shahezi formation in Xujiaweizi fault depression[J]. Journal of Jilin University(Earth Science Edition), 2022, 52(6):1800-1812.