Diagenetic evolution of Middle-Lower Paleocene sandstone reservoirs in gentle slope zone of Lixi Sag, East China Sea Shelf Basin

TANG Rui; QIN Jun; HUANG Shan; CHANG Wenqi; DONG Zhe; TIAN Junming

doi:10.16028/j.1009-2722.2022.297

2023 Vol. 39, No. 9

Article Contents

Article navigation > Marine Geology Frontiers > 2023 > 39(9): 46-54

Next Article Previous Article

TANG Rui, QIN Jun, HUANG Shan, CHANG Wenqi, DONG Zhe, TIAN Junming. Diagenetic evolution of Middle-Lower Paleocene sandstone reservoirs in gentle slope zone of Lixi Sag, East China Sea Shelf Basin[J]. Marine Geology Frontiers, 2023, 39(9): 46-54. doi: 10.16028/j.1009-2722.2022.297

Citation:

TANG Rui, QIN Jun, HUANG Shan, CHANG Wenqi, DONG Zhe, TIAN Junming. Diagenetic evolution of Middle-Lower Paleocene sandstone reservoirs in gentle slope zone of Lixi Sag, East China Sea Shelf Basin[J]. Marine Geology Frontiers, 2023, 39(9): 46-54. doi: 10.16028/j.1009-2722.2022.297

Diagenetic evolution of Middle-Lower Paleocene sandstone reservoirs in gentle slope zone of Lixi Sag, East China Sea Shelf Basin

1.
Shanghai Branch of CNOOC (China) Ltd., Shanghai 200335, China
2.
College of Energy, Chengdu University of Technology, Chengdu 610059, China

Received Date: 02 November 2022

Publish Date: 28 September 2023

Abstract

Abstract

The reservoir quality of Lixi Sag is one of the key factors restricting petroleum exploration for a long time. To study the development of effective reservoirs in Middle-Lower Paleocene in the gentle slope zone of the Lixi Sag, its diagenetic evolution was analyzed using thin sections, scanning electron microscope (SEM), X-ray diffraction, vitrinite reflectance and fluid inclusions of reservoir sandstone in some typical wells. Results shows that the diagenetic evolution of the Middle-Lower Paleocene in the gentle slope zone of Lixi Sag is different from north to south. In general, the evolution of the southern Lixi Sag is slightly more mature than that of the northern. In the main part of the slope (mid slope), the Middle-Lower Paleocene reservoir sandstone in the south had reached the middle diagenetic stage B, whereas in the north it only reached the middle diagenetic stage A. The content of rigid particles and carbonate precipitation in shallow burial depth are two key factors for the preservation of primary intergranular pores. The acidic environment formed by surface acidic water, mantle derived carbon dioxide, and acid discharged from the evolution of hydrocarbon source rocks, together with two types of acid soluble minerals, i.e., carbonate and feldspar, are key factors for the formation of secondary dissolution pores.
- diagenetic evolution /
- Middle-Lower Paleocene /
- gentle slope zone /
- Lixi Sag

FullText(HTML)

References

[1]	蔡坤,徐东浩,袁悦,等. 东海丽水凹陷西次凹明月峰组海底扇沉积特征及沉积模式[J]. 海洋地质与第四纪地质,2020,40(1):22-30. Google Scholar
[2]	ZHAO S J,FU Q,MA W R. Pore-throat size distribution and classification of the Paleogene tight sandstone in Lishui Sag,East China Sea Shelf Basin,China[J]. Energy Fuels,2021,35(1):290-305. doi: 10.1021/acs.energyfuels.0c02636 CrossRef Google Scholar
[3]	陈志勇,吴培康,吴志轩. 丽水凹陷石油地质特征及勘探前景[J]. 中国海上油气地质,2000,30(6):19-26. Google Scholar
[4]	刘欢,许长海,申雯龙,等. 东海陆架盆地丽水凹陷构造演化特征[J]. 石油实验地质,2021,43(6):949-957. Google Scholar
[5]	SU A,CHEN H H C,CAO L S,et al. Genesis,source and charging of oil and gas in Lishui Sag,East China Sea Basin[J]. Petroleum Exploration and Development,2014,41(5):574-584. doi: 10.1016/S1876-3804(14)60068-9 CrossRef Google Scholar
[6]	贾成业,夏斌,王核,等. 东海陆架盆地丽水凹陷构造演化及油气地质分析[J]. 天然气地球科学,2006,17(3):397-401. Google Scholar
[7]	陈志勇,吴培康,吴志轩. 丽水凹陷石油地质特征及勘探前景[J]. 中国海上油气(地质),2000,14(6):384-391. Google Scholar
[8]	侯国伟,刘金水,周瑞华,等. 丽水凹陷低位扇群沉积模式[J]. 岩性油气藏,2015,27(5):240-244. Google Scholar
[9]	LIU L L,LI Y,DONG H Z,et al. Diagenesis and reservoir quality of Paleocene tight sandstones,Lishui Sag,East China Sea Shelf Basin[J]. Journal of Petroleum Science and Engineering,2020,195:107615. doi: 10.1016/j.petrol.2020.107615 CrossRef Google Scholar
[10]	XU Y H,LI Y,ZHANG J L,et al. Improved understanding of the origin and accumulation of hydrocarbons from multiple source rocks in the Lishui Sag:insights from statistical methods,gold tube pyrolysis and basin modeling[J]. Marine and Petroleum Geology,2021,134:105361. doi: 10.1016/j.marpetgeo.2021.105361 CrossRef Google Scholar
[11]	孟康,金敏波,吴保祥. 鄂尔多斯盆地马岭油田侏罗系延安组储层特征研究[J]. 沉积与特提斯地质,2019,39(3):73-83. Google Scholar
[12]	NADER F H,CHAMPENOIS F,BARBIER M,et al. Diagenetic effects of compaction on reservoir properties:the case of early callovian “DalleNacrée” Formation (Paris basin,France)[J]. Journal of Geodynamics,2016,101(11):5-29. Google Scholar
[13]	赵爽,杜江峰,刘立,等. 东海盆地丽水凹陷古新统明月峰组含片钠铝石砂岩的自生矿物特征与成岩共生序列[J]. 矿物岩石,2013,33(2):85-93. Google Scholar
[14]	牛杏, 何云龙, 庄新国. 东海盆地丽水凹陷 CO₂分布特征及成藏主控因素[J]. 地球科学, 2021, 46（10）: 3549-3559. Google Scholar
[15]	代静静,罗静兰,何贤英,等. 准噶尔盆地西泉地区石炭系火山熔岩油气储层特征及成岩演化过程研究[J]. 中国地质,2020,47(3):742-754. Google Scholar
[16]	车启鹏,孙洪斌. 牛居地区下第三系砂岩储层中自生高岭石成因分析[J]. 长春地质学院学报,1995,25(3):306-309. Google Scholar
[17]	MA B Q,CHEN S M,YAN W L,et al. Pore structure evaluation of low permeability clastic reservoirs based on sedimentation diagenesis:a case study of the Chang 8 reservoirs in the Zhenbei region,Ordos Basin[J]. Journal of Petroleum Science and Engineering,2021,196:107841. doi: 10.1016/j.petrol.2020.107841 CrossRef Google Scholar
[18]	BJORLYKKE K,JAHREN J. Open or closed geochemical systems during diagenesis in sedimentary basins:constraints on mass transfer during diagenesis and the prediction of porosity in sandstone and carbonate reservoirs[J]. AAPG Bulletin,2012,96(12):2193-2214. doi: 10.1306/04301211139 CrossRef Google Scholar
[19]	李杪,侯云东,罗静兰,等. 致密砂岩储层埋藏-成岩-油气充注演化过程与孔隙演化定量分析:以鄂尔多斯盆地东部上古生界盒8段天然气储层为例[J]. 石油与天然气地质,2016,37(6):882-892. Google Scholar
[20]	应凤祥, 何东博, 龙玉梅, 等. SY/T 5477—2003碎屑岩成岩阶段划分[M]. 北京: 石油工业出版社, 2003. Google Scholar
[21]	王勇刚. 丽水凹陷火成岩发育特征及区域背景分析[J]. 中国石油和化工标准与质量,2019,39(9):150-151. Google Scholar
[22]	张敏强,黄思静,吴志轩,等. 东海盆地丽水凹陷古近系储层砂岩中碳酸盐胶结物及形成机制[J]. 成都理工大学学报(自然科学版),2007,34(3):259-266. Google Scholar
[23]	梁建设,田兵,王琪,等. 丽水-椒江凹陷月桂峰组地震-沉积响应及烃源岩特征[J]. 天然气地球科学,2012,23(3):482-488. Google Scholar
[24]	刘龙龙,张中强,张金亮. 丽水凹陷古新统储层成岩相测井识别与预测[J]. 中国海上油气,2021,33(1):64-75. Google Scholar
[25]	田兵,庞国印,王琪,等. 叠合断陷盆地油气成藏条件分析:以东海丽水-椒江凹陷为例[J]. 岩性油气藏,2012,24(5):32-37. Google Scholar