Hydrocarbon Accumulation Characteristics and Exploration Targets of Subu Tectonic Belt in Ulyastai Sag

doi:10.3969/j.issn.1006-6535.2021.06.006

Abstract

Abstract: To address the problems of unknown oil source conditions, sandbody sedimentary patterns, effective reservoir distribution and reservoir formation patterns in Subu Area, various methods such as geochemical analysis, detailed sandbody characterization and rock-mineral analysis were employed to analyze the hydrocarbon accumulation conditions in this area from three aspects, including source rock, reservoir conditions, and facies reservoir-capping assemblage, and elucidate the reasons for the vertical development of multiple abnormal pore zones. The results of the study proved that there were three accumulation modes for reservoirs in this area, including "transverse tectonic aggregation and favorable sandbody accumulation" of conventional reservoir, unconventional "tight glutenite oil and gas reservoirs" and "shale oil and gas reservoirs", and the hydrocarbon reservoirs were middle-shallow conventional reservoir and deep unconventional reservoir longitudinally and distributed as oil reservoir belt, oil-gas mixed belt and gas reservoir belt from shallow to deep. The study results were effective in the guidance for exploration breakthroughs in the area, handover of reserves and further exploration targets of the southern subsag, Ulyastai Sag.

Key words: abnormal pore zone, accumulation model, tight glutenite oil and gas reservoir, hydrocarbon distribution pattern, Subu Area

CLC Number:

TE112.3

Xie Jingping. Hydrocarbon Accumulation Characteristics and Exploration Targets of Subu Tectonic Belt in Ulyastai Sag[J]. Special Oil & Gas Reservoirs, 2021, 28(6): 45-53.

References

[1] 赵贤正,金凤鸣,王权,等.陆相断陷盆地洼槽聚油理论及其应用——以渤海湾盆地冀中坳陷和二连盆地为例[J].石油学报,2011,32(1):18-24.
ZHAO Xianzheng, JIN Fengming, WANG Quan,et al. Theory of hydrocarbon accumulation in troughs within continental faulted basins and its application:a case study in Jizhong Depression and Erlian Basin[J].ActaPetroleiSinica, 2011,32(1):18-24.
[2] 张健, 周刚, 张光荣, 等. 四川盆地中二叠统天然气地质特征与勘探方向[J].天然气工业, 2018,38(1): 10-20.
ZHANG Jian, ZHOU Gang, ZHANG Guangrong, et al. Geological characteristics and exploration orientation of Mid-Permian natural gas in the Sichuan Basin[J].Natural Gas Industry, 2018,38(1): 10-20.
[3] 江青春, 胡素云, 姜华, 等. 四川盆地中二叠统茅口组地层缺失量计算及成因探讨[J].天然气工业, 2018,38(1): 21-29.
JIANG Qingchun, HU Suyun, JIANG Hua, et al. Calculation and inducement of lacuna in the Mid-Permian MaokouFm of the Sichuan Basin[J]. Natural Gas Industry, 2018,38(1): 21-29.
[4] 汪泽成, 江青春, 黄士鹏, 等. 四川盆地中二叠统茅口组天然气大面积成藏的地质条件[J].天然气工业, 2018,38(1): 30-38.
WANG Zecheng, JIANG Qingchun, HUANG Shipeng, et al. Geological conditions for massive accumulation of natural gas in the Mid-Permian MaokouFm of the Sichuan Basin[J].Natural Gas Industry, 2018,38(1): 30-38.
[5] 王权,赵贤正,金凤鸣,等. 陆相盆地断陷洼槽区典型油藏成藏模式——以冀中坳陷和二连盆地为例[J].中国石油勘探,2009,14(2):9-12.
WANG Quan,ZHAO Xianzheng,JIN Fengming, et al. Typical reservoir forming patterns in sags in fault depressions of Terrestrial Basins: a case study of Jizhong Depression and Erlian Basin[J].China Petroleum Exploration, 2009,14(2):9-12.
[6] 李成海, 田建章, 金芳, 等. 饶阳凹陷河间变质岩潜山内幕油气成藏模式与勘探方向[J].中国石油勘探, 2019, 24(6): 781-790.
LI Chenghai, TIAN Jianzhang, JIN Fang, et al. Hydrocarbon accumulation models and exploration direction inside Hejian metamorphic buried hills in Raoyang Sag[J].China Petroleum Exploration, 2019, 24(6): 781-790.
[7] 徐春强,张震,张新涛,等. 渤海西部海域渤中西洼构造演化与油气成藏模式[J].东北石油大学学报,2018,42(1):68-76.
XU Chunqiang,ZHANG Zhen,ZHANG Xintao,et al. Tectonic evolution and hydrocarbon accumulation model of western sag in western Bohai Sea[J].Journal of Northeast Petroleum University,2018,42(1):68-76.
[8] 陈经覃, 康洪全, 范洪耀, 等. 尼日尔三角洲盆地深水区油气成藏模式与有利区带预测[J].中国石油勘探, 2020, 25(4): 95-104.
CHEN Jingtan, KANG Hongquan, FAN Hongyao,et al. Hydrocarbon accumulation model and favorable play prediction in deep water area, Niger Delta Basin[J].China Petroleum Exploration, 2020, 25(4): 95-104.
[9] 王德英,于海波,王启明,等. 渤海海域湖盆萎缩期浅水三角洲岩性油气藏差异成藏模式[J].东北石油大学学报,2018,42(3):16-25.
WANG Deying,YU Haibo,WANG Qiming,et al. Differences of hydrocarbon accumulation models of extremely shallow water delta in lacustrine basin shrinking period,Bohai Sea[J].Journal of Northeast Petroleum University,2018,42(3):16-25.
[10] 朱洁琼, 张以明, 黄远鑫, 等. 冀中坳陷束鹿凹陷潜山多样性油气成藏特征[J].中国石油勘探, 2019, 24(6): 791-798.
ZHU Jieqiong, ZHANG Yiming, HUANG Yuanxin, et al. The hydrocarbon accumulation characteristics of diverse buried hills in the Shulu Sag, Jizhong Depression[J]. China Petroleum Exploration, 2019, 24(6): 791-798.
[11] 王元杰,钱铮,桂训庭,等.二连盆地乌里雅斯太凹陷南洼槽岩性油藏层序地层特征与勘探[J].中国石油勘探,2004,9(3):40-46.
WANG Yuanjie,QIAN Zheng, GUI Xunting, et al.Sequence stratigraphic characteristics and exploration of lithologicoil reservoirs in southern sag of Wuliyastai Depression in Erlian Basin[J].China Petroleum Exploration, 2004,9(3):40-46.
[12] 冯兴雷,马立详,谢丛娇,等.乌里雅斯太凹陷南洼槽下白垩统重力流沉积相模式[J].沉积与特提斯地质,2008,27(4):28-35.
FENG Xinglei,MA Lixiang,XIE Congjiao,et al.Sedimentary faciesmodel for the Lower Cretaceous gravity flow deposits in the southern sag of the Uliastai Depression[J]. Sedimentary Geology & Tethyan Geology, 2008,27(4):28-35.
[13] 董春梅,赵仲祥,张宪国,等. 西湖凹陷中北部花港组物源及沉积相分析[J].东北石油大学学报,2018,42(5):25-34.
DONG Chunmei,ZHAO Zhongxiang,ZHANG Xianguo,et al.Analysis of provenance and sedimentary facies of Huagang Formation in the north central of Xihu Sag[J].Journal of Northeast Petroleum University,2018,42(5):25-34.
[14] 陈延芳,杜晓峰,王清斌,等.渤海黄河口中洼古地貌对沉积相的控制作用[J].东北石油大学学报,2018,42(5):35-43.
CHEN Yanfang,DU Xiaofeng,WANG Qingbin,et al.Control of sedimentary facies in paleotopography over the middle sag of Huanghekou in Bohai[J].Journal of Northeast Petroleum University,2018,42(5):35-43.
[15] 杨小陈.乌里雅斯太凹陷南洼槽腾格尔—阿尔善组层序地层学研究[D].大庆:东北石油大学,2017.
YANG Xiaochen.Research on sequence stratigraphy of Tenggeer-Aershan Formation in southern sag of Wuliyastai Depression[D].Daqing:Northeast Petroleum University,2017.
[16] 邓毅林,曹正林,裴明利,等.小型箕状断陷盆地坡折带与岩性油气藏勘探——以二连盆地乌里雅斯太断陷南洼为例[J].岩性油气藏,2006,18(1):38-42.
DENG Yilin,CAO Zhenglin,PEI Mingli,et al.Slopebreak zones inhalf graben fault basin and exploration of subtle pools : a casestudy of the southern sag of Wuliyasitai Depression in Erlian basin[J].Lithologic Reservoirs, 2006,18(1):38-42.
[17] 朱筱敏,张锐锋,朱世发,等. 二连盆地白垩系特殊岩类储层特征与成因机制[M]. 北京:科学出版社,2018:73-76.
ZHU Xiaomin,ZHANG Ruifeng,ZHU Shifa,et al.Reservoir characteristics and genetic mechanism of special rock type of cretaceous in Erlian Basin[J].Beijing:Science Publishing, 2018:73-76.
[18] 韩元春,赵贤正,金凤鸣,等.二连盆地地层岩性油藏“多元控砂-四元成藏-主元富集”与勘探实践[J].岩性油气藏,2008,20(1):15-20.
HAN Yuanchun,ZHAO Xianzheng,JIN Fengming,et al. “Multi-factor controlling,four-factor entrapping and key-factor enrichment”of stratigraphic-lithologic reservoirs and exploration practice in ErlianBasin[J].Lithologic Reservoirs,2008,20(1):15-20.
[19] 程志强,王飞宇,师玉雷,等.二连盆地乌里雅斯太凹陷南洼烃源岩有机相与生烃特征[J].天然气地球科学,2018,29(5):696-707.
CHENG Zhiqiang,WANG Feiyu,SHI Yulei,et al.Organicfacies and hydrocarbon characteristics of source rock in south trough of WuliyasitaiSag,Erlian Basin[J].Natural Gas Geoscience, 2018,29(5):696-707.
[20] 赵贤正,朱洁琼,张锐锋,等.冀中坳陷束鹿凹陷泥灰岩-砾岩致密油气成藏特征与勘探潜力[J].石油学报,2014,35(4):613-622.
ZHAO Xianzheng,ZHU Jieqiong,ZHANG Ruifeng,et al.Charac
teristics and exploration potential of tight calcilutite-rudstone reservoirs in Shulu Sag, Jizhong Depression[J].Acta Petrolei Sinica, 2014,35(4):613-622.
[21] 陈彦梅,杨德相,李熹微,等. 廊固凹陷沙河街组异常高孔带分布特征及成因[J].特种油气藏,2016,23(6):45-49.
CHEN Yanmei,YANG Dexiang,LI Xiwei,et al.Distribution and genesis of abnormal high-porosity zonesin Shahejie Formation of Langgu Sag[J].Special Oil & Gas Reservoirs,2016,23(6):45-49.
[22] 沈安江,吴海波,孙辉,等.松辽盆地肇源-太平川地区扶余油层油藏类型及成藏控制因素[J].中国石油勘探, 2009,14(1): 17-23.
SHEN Anjiang,WU Haibo,SUN Hui,et al.Reservoirtypes and controlling factors of reservoir formation in Fuyu Oil Beds of Zhaoyuan-Taipingchuan Area, Songliao Basin[J].China Petroleum Exploration,2009,14(1): 17-23.
[23] 易士威,王元杰,钱铮,等.二连盆地乌里雅斯太凹陷油气成藏模式及分布特征[J].石油学报,2006,27(3):27-31.
YI Shiwei,WANG Yuanjie,QIAN Zheng, et al. Forming pattern and distribution features of hydrocarbon reservoir in Wuliyasitai Sag of Erlian Basin[J].ActaPetrolei Sinica,2006,27(3):27-31.
[24] 邹才能,陶士振,袁选俊,等.“连续型”油气藏及其在全球中的重要性:成藏、分布与评价[J].石油勘探与开发,2009,36(6):675-677.
ZOU Caineng,TAO Shizhen,YUAN Xuanjun,et al.Global importance of“continuous”petroleum reservoirs accumulationdistribution and evaluation[J].Petroleum Exploration and Development,2009,36(6):675-677.
[25] 杜洪凌,许江文,李峋,等.新疆油田致密砂砾岩油藏效益开发的发展与深化——地质工程一体化在玛湖地区的实践与思考[J].中国石油勘探,2018,23(2):15-26.
DU Hongling,XU Jiangwen,LI Xun,et al.Development and deepening of profitable development of tight glutenite oil reservoirs in Xinjiang Oilfield: application of geology-engineering integration in Mahu Area and its enlightenment[J].China Petroleum Exploration, 2018,23(2):15-26.
[26] 刘涛,石善志,郑子君,等.地质工程一体化在玛湖凹陷致密砂砾岩水平井开发中的实践[J].中国石油勘探,2018,23(2):90-103.
LIU Tao,SHI Shanzhi,ZHENG Zijun,et al. Application of geology-engineering integration for developing tight oil in glutenite reservoir by horizontal wells in Mahu Sag[J].China Petroleum Exploration,2018,23(2):90-103.
[27] 刘震,郝琦,赵贤正,等.二连盆地砂岩体形成和分布的多元控制特征分析[J].地质科学,2007,42(2):319-334.
LIU Zhen,HAO Qi,ZHAO Xianzheng,et al.Analysis on characteristics ofmultifactor controlling sandbodies formation and distribution in the Erlian Basin[J].Chinese Journal of Geology, 2007,42(2):319-334.