准噶尔盆地滴南凸起西段梧桐沟组成藏条件及勘探实践

doi:10.7657/XJPG20200502

摘要/Abstract

摘要：

准噶尔盆地滴南凸起烃源岩条件优越,古生界发育石炭系滴水泉组、松喀尔苏组和二叠系平地泉组3套优质烃源岩,具有良好的供烃能力。通过成藏条件、地震储集层预测及地质综合分析认为,二叠系梧桐沟组作为石炭系顶部不整合面之上的第一套沉积岩储盖组合,以海西运动末期断裂及石炭系顶部不整合面为输导体系,以上部100多米厚高位体系域泥岩为区域盖层,可近源运移形成较大规模油气藏。在凸起西段发育水进体系域砂体,为建设性三角洲沉积,具有叠合连片成藏特征;在凸起斜坡区及凹陷区发育低位体系域砂体,砂体平面规模大,厚度大,但物性较差,坡积体或冲积扇扇中等物性较好的沉积体可形成低孔、低渗、低丰度块状油气藏。目前,梧桐沟组已发现气藏依然有扩边潜力,在斜坡区及凹陷区仍有可能发现新气藏。

关键词: 准噶尔盆地, 滴南凸起, 梧桐沟组, 成藏条件, 储盖组合, 探明储量

Abstract:

Superior conditions in the Dinan swell help develop three sets of hydrocarbon source rocks including Paleozoic Carboniferous Dishuiquan formation, Songkaersu formation and Permian Pingdiquan formation, which have good hydrocarbon supply capacity. Comprehensive analysis of accumulation conditions, seismic reservoir prediction and regional geology shows that large near-source oil and gas reservoirs could be developed in the Permian Wutonggou formation. This is the first set of sedimentary reservoir-cap assemblage above the unconformity in the Carboniferous top, whose transport system is composed of late Hercynian faults and the unconformity in the Carboniferous top, and the regional caprock composed of the upper 100-meter-thick mudstone is developed in the high-stand system tract. In the western section of the swell, transgressive sand bodies are constructive delta deposits, with the characteristics of superimposed and continuous accumulation. In the swell slope and sag areas, large and thick sand bodies of low-stand system tract are developed, but with poor physical properties. Sedimentary bodies with good physical properties such as slope deposits or alluvial fans and mid-fans can form massive oil and gas reservoirs with low porosity, low permeability and low abundance. The potential around the gas reservoirs that have been discovered in the Wutonggou formation is still large, and new gas reservoirs may be discovered in the slope and sag areas.

Key words: Junggar basin, Dinan swell, Wutonggou formation, accumulation condition, reservoir-cap assemblage, proven reserves

中图分类号:

TE112.6

王刚, 石新朴, 刘雪梅, 刘运宏, 朱中华, 侯磊. 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, LIU Yunhong, ZHU Zhonghua, HOU Lei. Reservoir-Forming Conditions and Exploration Practices of Wutonggou Formation in Western Dinan Swell, Junggar Basin[J]. Xinjiang Petroleum Geology, 2020, 41(5): 519-526.

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参考文献 15

[1]	唐勇, 徐洋, 李亚哲, 等. 玛湖凹陷大型浅水退覆式扇三角洲沉积模式及勘探意义[J]. 新疆石油地质, 2018,39(1):16-22.
	TANG Yong, XU Yang, LI Yazhe, et al. Sedimentation model and exploration significance of large-scaled shallow retrogradation fan delta in Mahu sag[J]. Xinjiang Petroleum Geology, 2018,39(1):16-22.
[2]	支东明, 唐勇, 郑孟林, 等. 玛湖凹陷源上砾岩大油区形成分布与勘探实践[J]. 新疆石油地质, 2018,39(1):1-8.
	ZHI Dongming, TANG Yong, ZHENG Menglin, et al. Discovery,distribution and exploration practice of large oil provinces of above-source conglomerate in Mahu sag[J]. Xinjiang Petroleum Geology, 2018,39(1):1-8.
[3]	胡素云, 王小军, 曹正林. 准噶尔盆地大中型气田(藏)形成条件与勘探方向[J]. 石油勘探与开发, 2020,47(2):247-258.
	HU Suyun, WANG Xiaojun, CAO Zhenglin. Formation conditions and exploration direction of large and medium gas reservoirs in the Junggar basin,NW China[J]. Petroleum Exploration and Development, 2020,47(2):247-258.
[4]	赵应成, 谭开俊, 王鹏, 等. 准东地区石炭系烃源岩特征及分布规律[J]. 天然气地球科学, 2011,22(5):753-759.
	ZHAO Yingcheng, TAN Kaijun, WANG Peng, et al. Geochemical characteristics of Carboniferous source rocks and distribution in the eastern part of Junggar basin[J]. Natural Gas Geoscience, 2011,22(5):753-759.
[5]	邢成智. 东道海子凹陷北环带中浅层断裂系统分析及目标优选[D]. 成都:西南石油大学, 2016.
	XING Chengzhi. System analysis and target optimization of medium and shallow faults in the northern ring zone of Dongdaohaizi sag[D]. Chengdu:Southwest Petroleum University, 2016.
[6]	达江, 胡咏, 赵孟军, 等. 准噶尔盆地克拉美丽气田油气源特征及成藏分析[J]. 石油与天然气地质, 2010,31(2):187-192. doi: 10.11743/ogg20100208
	DA Jiang, HU Yong, ZHAO Mengjun, et al. Features of source rocks and hydrocarbon pooling in the Kelameili gas field,the Junggar basin[J]. Oil & Gas Geology, 2010,31(2):187-192.
[7]	杨迪生, 陈世加, 李林, 等. 克拉美丽气田油气成因及成藏特征[J]. 天然气工业, 2012,32(2):27-32. doi: 10.3787/j.issn.1000-0976.2012.02.006
	YANG Disheng, CHEN Shijia, LI Lin, et al. Hydrocarbon origin and their pooling characteristics of Kelameili gas field[J]. Natural Gas Industry, 2012,32(2):27-32.
[8]	龙华山, 李剑, 王绪龙, 等. 克拉美丽气田有效烃源灶分布及其控藏作用[J]. 新疆石油地质, 2014,35(5):500-506.
	LONG Huashan, LI Jian, WANG Xulong, et al. Effective hydrocarbon kitchen in Kelameili gas field of Junggar basin and its control on hydrocarbon accumulation[J]. Xinjiang Petroleum Geology, 2014,35(5):500-506.
[9]	王大伟. 准噶尔盆地东道海子凹陷二叠系平地泉组油气资源潜力评价[D]. 成都:成都理工大学, 2014.
	WANG Dawei. Oil and gas resource potential assessment in Permian Pingdiquan formation of Dongdaohaizi depression in Junggar basin[D]. Chengdu: Chengdu University of Technology, 2014.
[10]	李林, 陈世加, 杨迪生, 等. 准噶尔盆地滴水泉凹陷石炭系烃源岩生烃能力分析[J]. 中国石油大学学报(自然科学版), 2013,37(4):52-58.
	LI Lin, CHEN Shijia, YANG Disheng, et al. Hydrocarbon generation capacity analysis of Carboniferous source rocks in Dishuiquan sag of Junggar basin[J]. Journal of China University of Petroleum(Edition of Natural Science), 2013,37(4):52-58.
[11]	何登发, 陈新发, 况军, 等. 准噶尔盆地石炭系油气成藏组合特征及勘探前景[J]. 石油学报, 2010,31(1):1-11.
	HE Dengfa, CHEN Xinfa, KUANG Jun, et al. Characteristics and exploration potential of Carboniferous hydrocarbon plays in Junggar basin[J]. Acta Petrolei Sinica, 2010,31(1):1-11.
[12]	李剑, 姜正龙, 罗霞, 等. 准噶尔盆地煤系烃源岩及煤成气地球化学特征[J]. 石油勘探与开发, 2009,36(3):365-374. doi: 10.1016/S1876-3804(09)60133-6
	LI Jian, JIANG Zhenglong, LUO Xia, et al. Geochemical characteristics of coal-measure source rocks and coal-derived gas in Junggar basin,NW China[J]. Petroleum Exploration and Development, 2009,36(3):365-374.
[13]	王琳霖, 王振奇, 张宗斌. 滴南凸起—阜北斜坡中上侏罗统—下白垩统油气成藏条件分析[J]. 科学技术与工程, 2015,15(36):134-141.
	WANG Linlin, WANG Zhenqi, ZHANG Zongbin. Hydrocarbon reservoir forming condition and reservoir modes of the Upper-Middle Jurassic and Lower Cretaceous in Dinan swell-Fubei slope area[J]. Science Technology and Engineering, 2015,15(36):134-141.
[14]	陆林超, 陈世加, 路俊刚, 等. 克拉美丽气田天然气成因及成藏规律研究[J]. 重庆科技学院学报(自然科学版), 2011,13(5):49-52.
	LU Linchao, CHEN Shijia, LU Jungang, et al. On the causes of natural gas and accumulation rule of Kelameili gas field[J]. Journal of Chongqing University of Science and Technology(Natural Sciences Edition), 2011,13(5):49-52.
[15]	支东明, 宋永, 何文军, 等. 准噶尔盆地中—下二叠统页岩油地质特征、资源潜力及勘探方向[J]. 新疆石油地质, 2019,40(4):389-401.
	ZHI Dongming, SONG Yong, HE Wenjun, et al. Geological characteristics,resource potential and exploration direction of Middle -Lower Permian shale oil in Junggar basin[J]. Xinjiang Petroleum Geology, 2019,40(4):389-401.