准噶尔盆地永进油田西山窑组油藏成岩演化及成藏史

doi:10.7657/XJPG20210103

摘要/Abstract

摘要：

准噶尔盆地腹部永进油田中侏罗统西山窑组埋深为5 600~6 400 m,为深层—超深层低孔低渗储集层。为揭示储集层致密化过程及其与油气成藏的关系,通过岩心观察、铸体薄片鉴定、流体包裹体分析、沥青荧光颜色分析等手段,分析了中侏罗统西山窑组储集层特征、成岩作用、成岩演化序列和油气充注史。研究结果表明,永进油田西山窑组经历了3期成岩—油气充注过程,每期成岩作用均因一期油气充注而终止;第一期充注的原油在构造抬升过程中遭受氧化,生成大量碳质沥青占据孔隙;第二期成岩作用末期发生大规模油气充注,形成超压油藏,油气充注抑制了储集层胶结减孔作用,溶解早期孔隙中充填的碳质沥青增加储集层空间,是油气成藏及储集层物性改善和保持的关键期,该期所成油藏是永进油田主要的勘探目标;第三期成岩作用,地层快速深埋压实,储集层物性变差,该期有少量高成熟油气充注。

关键词: 准噶尔盆地, 永进油田, 西山窑组, 成岩作用, 成岩演化, 成藏序列

Abstract:

The Middle Jurassic Xishanyao formation in Yongjin oilfield is generally 5 600 m to 6 400 m deep in the hinterland of the Junggar basin, where the reservoirs are deep and ultra-deep ones with low porosity and low permeability. In order to reveal the relationship between the process of reservoir densification and hydrocarbon accumulation, the reservoir characteristics, diagenesis, diagenetic evolution sequence and hydrocarbon accumulation history of the Middle Jurassic Xishanyao formation were analyzed through core observation, casting thin section identification, fluid inclusion and asphalt fluorescent color analysis. The results show that the Xishanyao formation has undergone three stages of diagenesis-hydrocarbon charging, and each stage of diagenesis was terminated with hydrocarbon charging. The oil charged in the first stage was oxidized in the process of tectonic uplifting, and a large amount of carbonaceous asphalt was generated and occupied reservoir pores. At the end of the second stage of diagenesis, large-scale hydrocarbon charging took place, resulting in overpressure reservoirs. Hydrocarbon charging obviously inhibited reservoir cementation and pore reduction, dissolved the carbonaceous asphalt in the early pores and increased the reservoir space. That’s the key process of hydrocarbon accumulation and improvement and maintenance of reservoir physical properties. Reservoirs formed in the stage is the primary exploration target in Yongjin oilfield. In the third stage of diagenesis, rapid burying and compaction further worsened the reservoir physical properties, so that only a small amount of highly mature oil and gas accumulated in the stage.

Key words: Junggar basin, Yongjin oilfield, Xishanyao formation, diagenesis, diagenetic evolution, hydrocarbon accumulation sequence

中图分类号:

TE122.221

任新成. 准噶尔盆地永进油田西山窑组油藏成岩演化及成藏史[J]. 新疆石油地质, 2021, 42(1): 21-28.

REN Xincheng. Diagenetic Evolution and Hydrocarbon Accumulation History in Reservoirs of Xishanyao Formation in Yongjin Oilfield, Junggar Basin[J]. Xinjiang Petroleum Geology, 2021, 42(1): 21-28.

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参考文献 22

[1]	李会军, 吴泰然, 吴波 , 等. 中国优质碎屑岩深层储层控制因素综述[J]. 地质科技情报, 2004,23(4):76-81.
	LI Huijun, WU Tairan, WU Bo , et al. Distribution and controlling factors of high quality clastic deeply buried reservoirs in China[J]. Geological Science and Technology Information, 2004,23(4):76-81.
[2]	李伟, 喻梓靓, 王雪珂 , 等. 中国含油气盆地深层、超深层超压盖层成因及其与超大型气田的关系[J]. 天然气工业, 2020,40(2):11-21.
	LI Wei, YU Ziliang, WANG Xueke , et al. Formation mechanisms of deep and ultra-deep over pressure cap rocks and their relationships with super large gas fields in the petroliferous basins of China[J]. Natural Gas Industry, 2020,40(2):11-21.
[3]	关旭同, 吴朝东, 吴鉴 , 等. 准噶尔盆地南缘上侏罗统—下白垩统沉积序列及沉积环境[J]. 新疆石油地质, 2020,41(1):67-79.
	GUAN Xutong, WU Chaodong, WU Jian , et al. Sedimentary sequence and depositional environment evolution of Upper Jurassic-Lower Cretaceous strata in the southern margin of Junggar basin[J]. Xinjiang Petroleum Geology, 2020,41(1):67-79.
[4]	蒋凌志, 顾家裕, 郭彬程 , 等. 中国含油气盆地碎屑岩低渗透储层的特征及形成机理[J]. 沉积学报, 2004,22(1):13-18.
	JIANG Lingzhi, GU Jiayu, GUO Bincheng , et al. Characteristics and mechanism of low permeability clastic reservoir in Chinese petroliferous basin[J]. Acta Sedimentologica Sinica, 2004,22(1):13-18.
[5]	刘春, 张荣虎, 张惠良 , 等. 致密砂岩储层微孔隙成因类型及地质意义:以库车前陆冲断带超深层储层为例[J]. 石油学报, 2017,38(2):150-159.
	LIU Chun, ZHANG Ronghu, ZHANG Huiliang , et al. Genetic types and geological significance of micro pores in tight sandstone reservoirs:a case study of the ultra-deep reservoir in the Kuqa foreland thrust belt,NW China[J]. Acta Petrolei Sinica, 2017,38(2):150-159.
[6]	王仁冲, 徐怀民 . 超深层油气藏储层特征和成藏模式[J]. 科技导报, 2009,27(3):40-45.
	WANG Renchong, XU Huaimin . Reservoir characteristics and reservoir formation model of super deep oil and gas reservoirs[J]. Science & Technology Review, 2009,27(3):40-45.
[7]	朱美衡, 李茂榕, 朱凤云 , 等. 永进地区西山窑组成岩作用及储层影响因素[J]. 西南石油大学学报(自然科学版), 2011,33(1):31-36.
	ZHU Meiheng, LI Maorong, ZHU Fengyun , et al. Sandstone diagenesis and the influence factors on reservoir of Xishanyao formation in Yongjin area[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2011,33(1):31-36.
[8]	王芙蓉, 何生, 何志亮 , 等. 准噶尔盆地腹部永进地区砂岩储层中碳酸盐胶结物特征及其成因意义[J]. 岩石矿物学杂志, 2009,28(2):169-178.
	WANG Furong, HE Sheng, HE Zhiliang , et al. Characteristics and genetic mechanism of carbonate cement in sandstone reservoirs of Yongjin area in central Junggar basin[J]. Acta Petrologica et Mineralogica, 2009,28(2):169-178.
[9]	修金磊, 王晓, 刘胜涛 , 等. 准噶尔盆地永进地区西山窑组储层特征及影响因素[J]. 石油地质与工程, 2015,29(3):28-30.
	XIU Jinlei, WANG Xiao, LIU Shengtao , et al. Reservoir characteristics and influencing factors analysis of Xishanyao formation in Yongjin area,Junggar basin[J]. Petroleum Geology and Engineering, 2015,29(3):28-30.
[10]	贺振建, 刘宝军, 王朴 , 等. 准噶尔盆地永进地区侏罗系层理缝成因及其对储层的影响[J]. 油气地质与采收率, 2011,18(1):15-17.
	HE Zhenjian, LIU Baojun, WANG Pu , et al. Genesis of bedding fractures and its influences on reservoirs in Jurassic,Yongjin area,Junggar basin[J]. Petroleum Geology and Recovery Efficiency, 2011,18(1):15-17.
[11]	胡海燕, 李平平 . 准噶尔永进地区深部储层的保存与发育机理[J]. 中国地质, 2007,34(1):81-85.
	HU Haiyan, LI Pingping . Preservation of deeply buried reservoirs in the Yongjin zone,Junggar basin,and its development mechanism[J]. Chinese Geology, 2007,34(1):81-85.
[12]	胡海燕, 李平平, 王国建 . 准噶尔永进地区深层次生孔隙带发育机理[J]. 地质科技情报, 2008,27(3):21-25.
	HU Haiyan, LI Pingping, WANG Guojian . Mechanism of secondary porosity development of Xishanyao formation (J₂x) in Yongjin block,Junggar basin[J]. Geological Science and Technology Information, 2008,27(3):21-25.
[13]	石好果 . 准中1区块古构造恢复及其演化对油气成藏的作用[J]. 断块油气田, 2017,24(4):456-461.
	SHI Haoguo . Recovery and evolution of paleostructure of Block 1 in central Junggar basin on hydrocarbon accumulation[J]. Fault-Block Oil ＆ Gas Field, 2017,24(4):456-461.
[14]	许涛, 张敏, 张曰静 , 等. 准噶尔盆地腹部构造演化特征与砂体结构模型[J]. 新疆石油地质, 2012,33(2):139-141.
	XU Tao, ZHANG Min, ZHANG Yuejing , et al. Geologic model for tectonic evolution characteristics and sand structure in hinterland of Junggar basin[J]. Xinjiang Petroleum Geology, 2012,33(2):139-141.
[15]	况军, 侯连华, 张越迁 , 等. 准噶尔盆地车莫古隆起浅层成藏因素及勘探方向[J]. 新疆石油地质, 2009,30(4):445-449.
	KUANG Jun, HOU Lianhua, ZHANG Yueqian , et al. The control factors of shallow hydrocarbon accumulation and the exploratory directions in Che-Mo paleohigh in Junggar basin[J]. Xinjiang Petroleum Geology, 2009,30(4):445-449.
[16]	WALDERHAUG O . Precipitation rates for quartz cement in sandstones determined by fluid-inclusion microthermonetry and temperature-history modeling[J]. Journal of Sedimentary Research, 1994,64(2):324-333.
[17]	刘刚, 卫延召, 陈棡 , 等. 准噶尔盆地腹部侏罗系—白垩系次生油气藏形成机制及分布特征[J]. 石油学报, 2019,40(8):914-927.
	LIU Gang, WEI Yanzhao, CHEN Gang , et al. Genetic mechanism and distribution characteristics of Jurassic-Cretaceous secondary reservoirs in the hinterland of Junggar basin[J]. Acta Petrolei Sinica, 2019,40(8):914-927.
[18]	杨智, 王京红, 林森虎 , 等. 准噶尔盆地腹部超压顶面附近油气成藏机制[J]. 中国石油大学学报(自然科学版), 2011,35(3):19-25.
	YANG Zhi, WANG Jinghong, LIN Senhu , et al. Hydrocarbon accumulation mechanism near top overpressured surface in central Junggar basin[J]. Journal of China University of Petroleum(Edition of Natural Science), 2011,35(3):19-25.
[19]	李纯泉, 陈红汉, 陈汉林 . 塔河油田奥陶系有机包裹体的油气指示意义[J]. 天然气工业, 2004,24(10):24-27.
	LI Chunquan, CHEN Honghan, CHEN Hanlin . Hydrocarbon indicator significance of organic inclusions in the Ordovician reservoir in Tahe oil field[J]. Natural Gas Industry, 2004,24(10):24-27.
[20]	张辉, 岳欣欣, 朱颜 , 等. 准噶尔盆地春光油田油藏特征及成藏模式[J]. 新疆石油地质, 2020,41(4):379-387.
	ZHANG Hui, YUE Xinxin, ZHU Yan , et al. Reservoir characteristics and hydrocarbon accumulation model in Chunguang oilfield,Junggar basin[J]. Xinjiang Petroleum Geology, 2020,41(4):379-387.
[21]	段威, 罗程飞, 刘建章 , 等. 莺歌海盆地LD区块地层超压对储层成岩作用的影响及其地质意义[J]. 地球科学:中国地质大学学报, 2015,40(9):1 517-1 528.
	DUAN Wei, LUO Chengfei, LIU Jianzhang , et al. Effect of overpressure formation on reservoir diagenesis and its geological significance to LD block of Yinggehai basin[J]. Earth Science:Journal of China University of Geosciences, 2015,40(9):1 517-1 528.
[22]	刘晓峰, 解习农, 张成 . 渤海湾盆地渤中坳陷储层超压特征与成因机制[J]. 地球科学:中国地质大学学报, 2008,33(3):337-341.
	LIU Xiaofeng, XIE Xinong, ZHANG Cheng . Characteristics and generation of the reservoir overpressure in Bozhong depression, Bohai Bay basin[J]. Earth Science:Journal of China University of Geosciences, 2008,33(3):337-341.