Petroleum Exploration Ideas and Discoveries in Upper Wuerhe Formation, Dongdaohaizi Sag, Junggar Basin

doi:10.7657/XJPG20220201

Abstract

Abstract:

Dongdaohaizi sag is one of the important hydrocarbon-generating sags in the Junggar basin. Petroleum discoveries have been made in the Jurassic and Cretaceous in the uplift around the sag and in the Permian upper Wuerhe formation within the sag. Focusing on key wells with oil and gas breakthroughs in the upper Wuerhe formation within the sag, and combining with the changes in exploration ideas and theoretical understanding, the exploration of the upper Wuerhe formation in the study area is divided into three stages, namely, source-edge fault block exploration stage, in-sag fault block exploration stage, and above-source lithologic exploration stage. The changes in exploration ideas brought about the discovery of high-yield oil and gas reservoirs in the upper Wuerhe formation on the eastern slope of the sag. Also, insights in three aspects have been gained. First, the source rocks in the Pingdiquan formation have entered the stage of light hydrocarbon generation, contributing to the near-source hydrocarbon accumulation in the upper Wuerhe formation. Second, a large-scale retrograde fan delta sedimentary system is developed in the upper Wuerhe formation, where the fan delta front facies belt superimposed by the thick layers of lowstand system tract(LST) and the thin layers of transgressive system tract(TST) serves as favorable reservoirs, with a distribution area of 3 350 km². Third, the hydrocarbon accumulation in the upper Wuerhe formation is characterized by sand enrichment in troughs, reserves controlled by facies belts, and production controlled by pores/fractures. Petroleum discoveries are concentrated in the eastern part, while no successful drilling result has been made in the western part of the sag. With these exploration ideas and geological understanding to guide the exploration deployment, there will be new discoveries of oil and gas in the Dongdaohaizi sag.

Key words: Junggar basin, Dongdaohaizi sag, Permian, upper Wuerhe formation, fan delta, lithology, petroleum exploration idea

CLC Number:

TE132.11

LI Yanping, ZOU Hongliang, LI Lei, FU Jiyou, XIA Yu, XIE Junyang. Petroleum Exploration Ideas and Discoveries in Upper Wuerhe Formation, Dongdaohaizi Sag, Junggar Basin[J]. Xinjiang Petroleum Geology, 2022, 43(2): 127-134.

Figures/Tables 8

Fig. 1.

Fig. 2.

Table 1

Fig. 3.

Fig. 4.

Fig. 5.

Fig. 6.

Fig. 7.

References 25

[1]	陈建平, 王绪龙, 邓春萍, 等. 准噶尔盆地油气源、油气分布与油气系统[J]. 地质学报, 2016, 90(3):421-450.
	CHEN Jianping, WANG Xulong, DENG Chunping, et al. Oil and gas sources,occurrence and petroleum system in the Junggar basin,Northwest China[J]. Acta Geologica Sinica, 2016, 90(3):421-450.
[2]	路俊刚, 陈莹莹, 王力, 等. 准噶尔盆地陆南地区油气成因[J]. 石油学报, 2014, 35(3):429-438.
	LU Jungang, CHEN Yingying, WANG Li, et al. Origin and source of oil and gas in Lunan area of Junggar basin[J]. Acta Petrolei Sinica, 2014, 35(3):429-438.
[3]	李林, 陈世加, 杨迪生, 等. 准噶尔盆地滴南凸起东段油气成因及来源[J]. 石油实验地质, 2013, 35(5):480-486.
	LI Lin, CHEN Shijia, YANG Disheng, et al. Hydrocarbon origin and source in east section of Dinan salient of Junggar basin[J]. Petroleum Geology & Experiment, 2013, 35(5):480-486.
[4]	陈建平, 梁狄刚, 王绪龙, 等. 彩南油田多源混合原油的油源 (一):烃源岩基本地球化学特征与生物标志物特征[J]. 石油勘探与开发, 2003, 30(4):20-24.
	CHEN Jianping, LIANG Digang, WANG Xulong, et al. Oil-source identification for the mixed oils derived from multiple source rocks in the Cainan oilfield,Junggar basin,Northwest China. Part I:fundamental geochemical features of source rocks[J]. Petroleum Exploration and Development, 2003, 30(4):20-24.
[5]	陈建平, 梁狄刚, 王绪龙, 等. 彩南油田多源混合原油的油源 (二):原油地球化学特征、分类与典型原油油源[J]. 石油勘探与开发, 2003, 30(5):34-38.
	CHEN Jianping, LIANG Digang, WANG Xulong, et al. Oil-sources correlation of mixed oils derived from multiple source rocks in the Cainan oilfield,Junggar basin,Northwest China. Part II:geochemical characteristics,typing and oil sources of typical crude oils[J]. Petroleum Exploration and Development, 2003, 30(5):34-38.
[6]	张焕旭, 陈世加, 杨迪生, 等. 东道海子凹陷周缘构造油气源对比及勘探潜力分析[J]. 沉积学报, 2017, 35(2):393-402.
	ZHANG huanxu, CHEN Shijia, YANG Disheng, et al. Oil-gas source correlation around Dongdaohaizi sag for hydrocarbon exploration potential analysis[J]. Acta Sedimentologica Sinica, 2017, 35(2):393-402.
[7]	白小娜, 罗小平, 刘茂鹏, 等. 东道海子地区储层孔隙烃和包裹体烃对比及油源分析[J]. 西安石油大学学报 (自然科学版), 2017, 32(3):9-17.
	BAI Xiaona, LUO Xiaoping, LIU Maopeng, et al. Comparative study of pore hydrocarbon with inclusion hydrocarbon and oil-source relation analysis of reservoir in Dongdaohaizi area[J]. Journal of Xi’an Shiyou University (Natural Science Edition), 2017, 32(3):9-17.
[8]	王刚, 石新朴, 刘雪梅, 等. 准噶尔盆地滴南凸起西段梧桐沟组成藏条件及勘探实践[J]. 新疆石油地质, 2020, 41(5):519-526.
	WANG Gang, SHI Xinpu, LIU Xuemei, et al. Reservoir forming conditions and exploration practices of Wutonggou formation in western Dinan swell,Junggar basin[J]. Xinjiang Petroleum Geology, 2020, 41(5):519-526.
[9]	丁湘华. 准噶尔盆地东道海子凹陷油气成因及成藏期次分析[J]. 科学技术与工程, 2016, 16(10):80-84.
	DING Xianghua. Analysis of hydrocarbon genesis and accumulation stages of Dongdaohaizi sag in Junggar basin[J]. Science Technology and Engineering, 2016, 16(10):80-84.
[10]	廖健德, 王海静, 罗小平, 等. 准噶尔盆地滴南地区原油地球化学特征及油源[J]. 成都理工大学学报(自然科学版), 2016, 43(6):688-695.
	LIAO Jiande, WANG Haijing, LUO Xiaoping, et al. Geochemical characteristics of crude oil and oil source analysis in the Dinan area of Dongdaohaizi sag,Junggar basin,China[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2016, 43(6):688-695.
[11]	张焕旭. 准噶尔盆地东道海子凹陷北环带重点构造油气来源及成藏研究[D]. 成都:西南石油大学, 2014.
	ZHANG Huanxu. Oil-gas origin and exploration study of key structures in the north of Dongdaohaizi sag,Junggar basin[D]. Chengdu:Southwest Petroleum University, 2014.
[12]	冯陶然. 准噶尔盆地二叠系构造—地层层序与盆地演化[D]. 北京:中国地质大学(北京), 2017.
	FENG Taoran. Permian tectono-stratigraphic sequence and basin evolution in Junggar basin[D]. Beijing:China University of Geosciences (Beijing), 2017.
[13]	陈磊, 杨镱婷, 汪飞, 等. 准噶尔盆地勘探历程与启示[J]. 新疆石油地质, 2020, 41(5):505-518.
	CHEN Lei, YANG Yiting, WANG Fei, et al. Exploration history and enlightenment in Junggar basin[J]. Xinjiang Petroleum Geology, 2020, 41(5):505-518.
[14]	匡立春, 支东明, 王小军, 等. 新疆地区含油气盆地深层—超深层成藏组合与勘探方向[J]. 中国石油勘探, 2021, 26(4):1-14.
	KUANG Lichun, ZHI Dongming, WANG Xiaojun, et al. Oil and gas accumulation assemblages in deep to ultra-deep formations and exploration targets of petroliferous basins in Xinjiang region[J]. China Petroleum Exploration, 2021, 26(4):1-14.
[15]	陈萍, 张玲, 王惠民. 准噶尔盆地油气储量增长趋势与潜力分析[J]. 石油实验地质, 2015, 37(1):124-128.
	CHEN Ping, ZHANG Ling, WANG Huimin. Reserves growth trend and potential analysis of Junggar basin[J]. Petroleum Geology & Experiment, 2015, 37(1):124-128.
[16]	梁舒艺, 吴孔友. 准噶尔盆地东道海子凹陷压扭应力机制发现及对油气富集的控制作用[A]//第31届全国天然气学术年会 (2019)论文集 (01地质勘探)[C]. 中国石油学会天然气专业委员会,成都, 2019:468-479.
	LIANG Shuyi, WU kongyou. Discovery of compressive torsional stress mechanism and its control on oil and gas enrichment in Dongdaohaizi sag,Junggar basin[A]//Proceedings of the 31st national natural gas academic annual conference (2019) (01 geological exploration)[C]. Natural Gas Committee of China Petroleum Society, 2019:468-479.
[17]	孙晓晨. 东道海子凹陷滴南8井区断裂发育特征研究[D]. 成都:西南石油大学, 2017.
	SUN Xiaochen. Study on fault development characteristics of Dinan 8 well block in Dongdaohaizi sag[D]. Chengdu:Southwest Petroleum University, 2017.
[18]	靳军, 罗小平, 廖健德, 等. 准噶尔盆地东道海子凹陷平地泉组烃源岩地球化学特征[J]. 成都理工大学学报 (自然科学版), 2015, 42(2):196-202.
	JIN Jun, LUO Xiaoping, LIAO Jiande, et al. Geochemical characteristics of Permian Pingdiquan formation hydrocarbon source rocks in Dongdaohaizi sag,Junggar basin,China[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2015, 42(2):196-202.
[19]	李珑. 东道海子凹陷北斜坡梧桐沟组沉积体系及有利储层预测[D]. 成都:西南石油大学, 2016.
	LI Long. Sedimentary system and favorable reservoir prediction of Wutonggou formation in the northern slope of the Dongdaohaizi sag[D]. Chengdu:Southwest Petroleum University, 2016.
[20]	李斌, 连丽霞, 雷海艳, 等. 准噶尔盆地东道海子凹陷北斜坡上二叠统梧桐沟组储集层成岩作用与孔隙演化[J]. 天然气勘探与开发, 2017, 40(3):24-29.
	LI Bin, LIAN Lixia, LEI Haiyan, et al. Diagenesis and pore evolution of Upper Permian Wutonggou formation reservoir in the north slope of Dongdaohaizi sag,the Junggar basin[J]. Natural Gas Exploration and Development, 2017, 40(3):24-29.
[21]	刘春慧, 刘家铎. 准噶尔盆地东部五彩湾—石树沟地区二叠系平地泉组储层成岩作用及孔隙演化[J]. 成都理工大学学报(自然科学版), 2003, 30(5):505-510.
	LIU Chunhui, LIU Jiaduo. Diagenesis and porosity evolution of Permian Pingdiquan formation in Wucaiwan-Shishugou region of the easten Junggar basin[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2003, 30(5):505-510.
[22]	胡鑫, 邹红亮, 胡正舟, 等. 扇三角洲砂砾岩储层特征及主控因素:以准噶尔盆地东道海子凹陷东斜坡二叠系上乌尔禾组为例[J]. 东北石油大学学报, 2021, 45(6):15-26.
	HU Xin, ZOU Hongliang, HU Zhengzhou, et al. Reservoir characteristics and main controlling factors of glutenite reservoir in fan delta glutenite:a case study of the Upper Urho formation of Permian in the east slope of Dongdaohaizi sag,Junggar basin[J]. Journal of Northeast Petroleum University, 2021, 45(6):15-26.
[23]	曹江骏, 罗静兰, 马迪娜, 等. 微观非均质性对砂砾岩储层致密化的影响机理:以准噶尔盆地东道海子凹陷DN8井区上二叠统梧桐沟组为例[J]. 地球科学, 2021, 46(10):3 435-3 452.
	CAO Jiangjun, LUO Jinglan, MA Dina, et al. Influence mechanism of micro-heterogeneity on conglomerate reservoir densification:a case study of Upper Permian Wutonggou formation in DN8 area of Dongdaohaizi sag,Junggar basin[J]. Earth Science, 2021, 46(10):3 435-3 452.
[24]	邹妞妞, 张大权, 史基安, 等. 准噶尔盆地中拐凸起二叠系上乌尔禾组油气成藏及其主控因素[J]. 天然气地球科学, 2021, 32(4):540-550.
	ZOU Niuniu, ZHANG Daquan, SHI Ji’an, et al. Formation conditions and main controlling factors of hydrocarbon accumulation of the Upper Wuerhe formation of Permian in Zhongguai uplift,Junggar basin[J]. Natural Gas Geoscience, 2021, 32(4):540-550.
[25]	乔锦琪. 准噶尔盆地东道海子凹陷东部二叠系油气成藏条件研究[D]. 北京:中国石油大学(北京), 2017.
	QIAO Jinqi. Hydrocarbon accumulation characteristics of the Permian reserviors in the eastern Dongdaohaizi sag,Junggar basin[D]. Beijing:China University of Petroleum (Beijing), 2017.