Architecture of Shallow-Water Delta Reservoir of Huagang Formation in C Oilfield，Xihu Sag

doi:10.7657/XJPG20230502

Abstract

Abstract:

In order to improve the accuracy of reservoir characterization for purpose of tapping the potential of remaining oil in the middle to late oil and gas field development stage, taking the shallow-water delta reservoir of the Huagang formation in C oilfield, Xihu sag, as an example, the reservoir architecture was investigated by using core, grain size, logging, and seismic data. The architecture patterns of composite channel sandbodies of shallow-water delta facies were established, and their spatial evolution was clarified. The results show that the H3c layer represents the upper plain-channel deposit of shallow-water-delta facies, which is dominated by vertically stacked thick sandbodies; the H3b layer represents the lower plain-channel deposit of shallow-water delta facies, in which laterally-migrated medium-thick sandbodies are developed; and the H3a layer represents the shallow-water delta-front deposit, which is featured with isolated thin sandbody. The development of vertical sandbodies was controlled by middle-term base-level cycle. As the lake level rose, the shallow-water delta in the study area formed a retrogradational sequence, and sandbodies evolved from sheet-like to isolated belt-like, resulting in deteriorating reservoir connectivity.

Key words: Xihu sag, Huagang formation, shallow-water delta, distributary channel, reservoir architecture, sandbody, seismic sedimentology

CLC Number:

TE122

HE Xianke, LOU Min, CAI Hua, LI Bingying, LIU Yinghui, HUANG Xin. Architecture of Shallow-Water Delta Reservoir of Huagang Formation in C Oilfield，Xihu Sag[J]. Xinjiang Petroleum Geology, 2023, 44(5): 517-527.

Figures/Tables 8

Fig. 1.

Fig. 2.

Fig. 3.

Fig. 4.

Fig. 5.

Fig. 6.

Fig. 7.

Fig. 8.

References 29

[1]	邹才能, 赵文智, 张兴阳, 等. 大型敞流坳陷湖盆浅水三角洲与湖盆中心砂体的形成与分布[J]. 地质学报, 2008, 82(6):813-825.
	ZOU Caineng, ZHAO Wenzhi, ZHANG Xingyang, et al. Formation and distribution of shallow-water deltas and central-basin sandbodies in large open depression lake basins[J]. Acta Geologica Sinica, 2008, 82(6):813-825.
[2]	张莉, 鲍志东, 林艳波, 等. 浅水三角洲砂体类型及沉积模式:以松辽盆地南部乾安地区白垩系姚家组一段为例[J]. 石油勘探与开发, 2017, 44(5):727-736. doi: 10.11698/PED.2017.05.07
	ZHANG Li, BAO Zhidong, LIN Yanbo, et al. Genetic types and sedimentary model of sandbodies in a shallow-water delta:A case study of the first member of Cretaceous Yaojia formation in Qian’an area,south of Songliao basin,NE China[J]. Petroleum Exploration and Development, 2017, 44(5):727-736.
[3]	李振鹏. 渤海海域分流河道型浅水三角洲储层构型表征:以歧口油田明下段地层为例[J]. 中国海上油气, 2020, 32(1):103-110.
	LI Zhenpeng. Configuration characterization of distributary channel-type shallow water delta reservoirs in Bohai sea:Taking the lower Minghuazhen formation of QK oilfield as an example[J]. China Offshore Oil and Gas, 2020, 32(1):103-110.
[4]	吴穹螈, 陈晓明, 赵汉卿, 等. 分流砂坝型浅水三角洲储层构型研究[J]. 西南石油大学学报(自然科学版), 2019, 41(2):53-63. doi: 10.11885/j.issn.1674-5086.2018.11.16.10
	WU Qiongyuan, CHEN Xiaoming, ZHAO Hanqing, et al. Study on the hierarchy of a distributary-mouth bar type shallow-water delta reservoir[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2019, 41(2):53-63.
[5]	张昌民, 尹太举, 朱永进, 等. 浅水三角洲沉积模式[J]. 沉积学报, 2010, 28(5):933-944.
	ZHANG Changmin, YIN Taiju, ZHU Yongjin, et al. Shallow-water deltas and models[J]. Acta Sedimentologica Sinica, 2010, 28(5):933-944.
[6]	王夏斌, 姜在兴, 胡光义, 等. 浅水三角洲分流河道沉积模式分类[J]. 地球科学与环境学报, 2020, 42(5):654-667.
	WANG Xiabin, JIANG Zaixing, HU Guangyi, et al. Classification of sedimentary models of distributary channels in shallow-water deltas[J]. Journal of Earth Sciences and Environment, 2020, 42(5):654-667.
[7]	任奕霖, 赵俊峰, 陈佳宇, 等. 鄂尔多斯盆地浅水三角洲前缘沉积特征与砂体构型:以宜川仕望河剖面长9油层组为例[J]. 新疆石油地质, 2022, 43(3):310-319.
	REN Yilin, ZHAO Junfeng, CHEN Jiayu, et al. Sedimentary characteristics and sand body architecture of shallow delta front in Ordos basin:A case study of Chang 9 member in Shiwanghe section in Yichuan[J]. Xinjiang Petroleum Geology, 2022, 43(3):310-319.
[8]	DOU Luxing, HOU Jiagen, LIU Yuming, et al. Sedimentary infill of shallow water deltaic sand bodies controlled by smallscale syndepositional faults related paleogeomorphology:Insights from the paleogene Shahejie formation in the Dongying depression,Bohai Bay basin,eastern China[J]. Marine and Petroleum Geology, 2020, 118:104420. doi: 10.1016/j.marpetgeo.2020.104420
[9]	ZHU Xiaomin, LI Shunli, WU Dong, et al. Sedimentary characteristics of shallow-water braided delta of the Jurassic,Junggar basin,western China[J]. Journal of Petroleum Science and Engineering, 2017, 149:591-602. doi: 10.1016/j.petrol.2016.10.054
[10]	WANG Jiahao, GUAN Zhenliang, LA CROIX A D, et al. Seismic geomorphology of shallow-water lacustrine deltas in the Paleocene Huanghua depression,Bohai Bay basin,eastern China[J]. Marine and Petroleum Geology, 2020, 120:104561. doi: 10.1016/j.marpetgeo.2020.104561
[11]	ZHANG Xiaoju, WU Dong, FU Meiyan, et al. Controls of sandstone architecture on hydrocarbon accumulation in a shallow-water delta from the Jurassic Shaximiao formation of the western Sichuan basin in China[J]. Energy Reports, 2022, 8:6068-6 085.
[12]	ZHANG Li, BAO Zhidong, DOU Luxing, et al. Sedimentary characteristics and pattern of distributary channels in shallow water deltaic red bed succession:A case from the Late Cretaceous Yaojia formation,southern Songliao basin,NE China[J]. Journal of Petroleum Science and Engineering, 2018, 171:1171-1190. doi: 10.1016/j.petrol.2018.08.006
[13]	吴胜和, 翟瑞, 李宇鹏. 地下储层构型表征:现状与展望[J]. 地学前缘(中国地质大学(北京);北京大学), 2012, 19(2):15-23.
	WU Shenghe, ZHAI Rui, LI Yupeng. Subsurface reservoir architecture characterization:Current status and prospects[J]. Earth Science Frontiers(China University of Geosciences(Beijing);Peking University), 2012, 19(2):15-23.
[14]	井涌泉, 蔡文涛, 王海峰, 等. 基于地震波形结构特征的浅水三角洲砂体构型预测[J]. 地球物理学进展, 2020, 35(6):2359-2 366.
	JING Yongquan, CAI Wentao, WANG Haifeng, et al. Prediction of shallow water delta sand body configuration based on architectural feature of seismic waveform[J]. Progress in Geophysics, 2020, 35(6):2359-2366.
[15]	邓庆杰, 康德江, 胡明毅, 等. 松辽盆地三肇凹陷南部泉头组四段浅水三角洲河道储层构型特征[J]. 石油与天然气地质, 2020, 41(3):513-524.
	DENG Qingjie, KANG Dejiang, HU Mingyi, et al. Architecture of channel reservoirs of shallow-water delta in the 4th member of Cretaceous Quantou formation in southern Sanzhao sag,Songliao basin[J]. Oil & Gas Geology, 2020, 41(3):513-524.
[16]	范廷恩, 王海峰, 胡光义, 等. 海上油田复合砂体构型解剖方法及其应用[J]. 中国海上油气, 2018, 30(4):102-112.
	FAN Ting’en, WANG Haifeng, HU Guangyi, et al. Anatomy method of composite sand body architecture in offshore oilfield and its application[J]. China Offshore Oil and Gas, 2018, 30(4):102-112.
[17]	蔡华, 张建培, 唐贤君. 西湖凹陷断裂系统特征及其控藏机制[J]. 天然气工业, 2014, 34(10):18-26.
	CAI Hua, ZHANG Jianpei, TANG Xianjun. Characteristics of the fault systems and their control on hydrocarbon accumulation in the Xihu sag,East China Sea shelf basin[J]. Natural Gas Industry, 2014, 34(10):18-26.
[18]	毛云新, 娄敏. 河流相储层刻画与垂向非均质性分析:以西湖凹陷C油田柳浪组为例[J]. 东北石油大学学报, 2021, 45(5):51-62.
	MAO Yunxin, LOU Min. Fluvial reservoir characterization and vertical heterogeneity analysis:Taking Liulang formation of C oilfield in Xihu depression as example[J]. Journal of Northeast Petroleum University, 2021, 45(5):51-62.
[19]	娄敏, 蔡华, 何贤科, 等. 地震沉积学在东海陆架盆地西湖凹陷河流-三角洲相储集层刻画中的应用[J]. 石油勘探与开发, 2023, 50(1):125-138. doi: 10.11698/PED.20220204
	LOU Min, CAI Hua, HE Xianke, et al. Application of seismic sedimentology in characterization of fluvial-deltaic reservoirs in Xihu sag,East China Sea shelf basin[J]. Petroleum Exploration and Development, 2023, 50(1):125-138. doi: 10.1016/S1876-3804(22)60374-4
[20]	娄敏, 刘江, 涂齐催, 等. 河流-三角洲相不同厚度储层的地震沉积学研究[J]. 地球物理学进展, 2021, 36(5):2191-2 203.
	LOU Min, LIU Jiang, TU Qicui, et al. Application of seismic sedimentology to the prediction of fluvial-delta facies reservoirs with different thickness[J]. Progress in Geophysics, 2021, 36(5):2191-2 203.
[21]	MIALL A D. Architectural elements and bounding surfaces in fluvial deposit:Anatomy of the Kayenta formation(Lower Jurassic),southwest Colorado[J]. Sedimentary Geology, 1988, 55:233-262. doi: 10.1016/0037-0738(88)90133-9
[22]	POSAMENTIER H W, PAUMARD V, LANG S C. Principles of seismic stratigraphy and seismic geomorphology I:Extracting geologic insights from seismic data[J]. Earth-Science Reviews, 2022, 228:103963. doi: 10.1016/j.earscirev.2022.103963
[23]	ZHU Xiaomin, ZENG Hongliu, LI Shunli, et al. Sedimentary characteristics and seismic geomorphologic responses of a shallow-water delta in the Qingshankou formation from the Songliao basin,China[J]. Marine and Petroleum Geology, 2017, 79:131-148. doi: 10.1016/j.marpetgeo.2016.09.018
[24]	ZENG Hongliu. What is seismic sedimentology? A tutorial[J]. Interpretation, 2018, 6(2):1-12.
[25]	段南. 叠前地震波形指示反演在薄互储层预测中的应用[J]. 地球物理学进展, 2019, 34(2):523-528.
	DUAN Nan. Application of prestack seismic waveform indicates inversion in thin reservoir prediction[J]. Progress in Geophysics, 2019, 34(2):523-528.
[26]	袁丙龙, 张辉, 叶青, 等. 基于三角洲复合砂体构型的流动单元划分及剩余油分布模式[J]. 沉积学报, 2021, 39(5):1253-1 263.
	YUAN Binglong, ZHANG Hui, YE Qing, et al. Flow-unit classification based on compound sand-body architecture of delta and distribution pattern of remaining oil[J]. Acta Sedimentologica Sinica, 2021, 39(5):1253-1263.
[27]	付晶, 吴胜和, 王哲, 等. 湖盆浅水三角洲分流河道储层构型模式:以鄂尔多斯盆地东缘延长组野外露头为例[J]. 中南大学学报(自然科学版), 2015, 46(11):4174-4182.
	FU Jing, WU Shenghe, WANG Zhe, et al. Architecture model of shallow-water delta distributary channel in lake basin:A case study of the Yanchang formation outcrops in the eastern margin of Ordos basin[J]. Journal of Central South University(Science and Technology), 2015, 46(11):4174-4182.
[28]	刘念周, 李波, 张艺, 等. 克拉玛依油田克75井区上乌尔禾组沉积特征及砂体连通性[J]. 新疆石油地质, 2022, 43(4):417-424.
	LIU Nianzhou, LI Bo, ZHANG Yi, et al. Sedimentary characteristics and connectivity of upper Wuerhe formation in Wellblock Ke 75,Karamay oilfield[J]. Xinjiang Petroleum Geology, 2022, 43(4):417-424.
[29]	徐振华, 吴胜和, 刘钊, 等. 浅水三角洲前缘指状砂坝构型特征:以渤海湾盆地渤海BZ25油田新近系明化镇组下段为例[J]. 石油勘探与开发, 2019, 46(2):322-333. doi: 10.11698/PED.2019.02.12
	XU Zhenhua, WU Shenghe, LIU Zhao, et al. Sandbody architecture of the bar finger within shoal water delta front:Insights from the lower member of Minghuazhen formation,Neogene,Bohai BZ25 oilfield,Bohai Bay basin,East China[J]. Petroleum Exploration and Development, 2019, 46(2):322-333.