Lithofacies Characteristics, Depositional Environment and Sequence Stratigraphic Framework in the Saline Lacustrine Basin-A Case Study of the Eocene Low Member of Xingouzui Formation, Jianghan Basin, China

Fan, Xiaojie1; Lu, Yongchao1; Zhang, Jingyu2; Wu, Shiqiang3; Zhang, Liang3; Du, Xiaojuan3; Cui, Qinyu1; Wang, Hao4

2022-09-01

10.3390/en15176235

ENERGIES   Impact Factor & Quartile

1996-1073

The Jianghan Basin is a lacustrine basin in central China developing multiple salt bearing deposits in the Eocene with the success of shale oil exploration in the Qianjiang Formation. The lower member of the Xingouzui Formation in the Chentuokou Depression has become another exploration target. However, rapid changes in lithofacies and strong sedimentary heterogeneity limit the exploration progress. This study aimed to explore the sequence division, lithofacies characteristics, and sedimentary environment using sedimentological, X-ray fluorescence (XRF) and X-ray diffraction (XRD) analyses. The sequence stratigraphic analysis indicates that the low member of the Xingouzui Formation is divided into two third-order sequences, namely SQ(1) and SQ(2), and four system tracts, including highstand systems tract (HST), lake expanding system tract (EST), early highstand system tract (EHST), and late highstand system tract (LHST). Moreover, a total of nine major lithofacies and five lithofacies associations (LA1-5) were identified. The organic geochemical data show that the laminated argillaceous dolomite in EST and EHST developed the best oil content with an average TOC of 1.18% and S-1 of 3.18 mg/g, The laminated argillaceous dolomite deposited in anoxic conditions with a humid climate, moderate salinity, and stratified deep waterbody is a favorable exploration facies for shale oil.

sequence lithofacies sedimentary environment shale oil Jianghan Basin

SCI ; EI

English

Others

Formation and enrichment mechanism of shale oil in Xingouzui Formation, Chentuokou depression Jianghan basin of the Jianghan Oilfield Research Institute Sinopec Corp[31400032-21-ZC0613-0002]

Energy & Fuels

Energy & Fuels

WOS:000851034000001

MDPI

20223812757538

Dolomite ; Oil bearing formations ; Petroleum prospecting ; Sedimentology

Geology:481.1 ; Minerals:482.2 ; Oil Fields:512.1.1 ; Petroleum Deposits : Development Operations:512.1.2

Web of Science

1.China Univ Geosci, Sch Earth Resources, Wuhan 430074, Peoples R China
2.Southern Univ Sci & Technol, Ctr Marine Magnetism CM2, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China
3.Sinopec Jianghan Oilfield Co, Explorat & Dev Res Inst, Wuhan 430074, Peoples R China
4.China Univ Geosci, Sch Marine Sci & Technol, Wuhan 430074, Peoples R China

Fan, Xiaojie,Lu, Yongchao,Zhang, Jingyu,et al. Lithofacies Characteristics, Depositional Environment and Sequence Stratigraphic Framework in the Saline Lacustrine Basin-A Case Study of the Eocene Low Member of Xingouzui Formation, Jianghan Basin, China[J]. ENERGIES,2022,15(17).

Fan, Xiaojie.,Lu, Yongchao.,Zhang, Jingyu.,Wu, Shiqiang.,Zhang, Liang.,...&Wang, Hao.(2022).Lithofacies Characteristics, Depositional Environment and Sequence Stratigraphic Framework in the Saline Lacustrine Basin-A Case Study of the Eocene Low Member of Xingouzui Formation, Jianghan Basin, China.ENERGIES,15(17).

Fan, Xiaojie,et al."Lithofacies Characteristics, Depositional Environment and Sequence Stratigraphic Framework in the Saline Lacustrine Basin-A Case Study of the Eocene Low Member of Xingouzui Formation, Jianghan Basin, China".ENERGIES 15.17(2022).