Trend judgment of abandoned channels and fine architecture characterization in meandering river reservoirs: A case study of Neogene Minhuazhen Formation NmIII2 layer in Shijiutuo bulge, Chengning uplift, Bohai Bay Basin, East China

Niu, Bo; Jiahong, Zhao; Fu, Ping; Li, Junjian; Bao, Zhidong; Hu, Yong; Su, Jincang; Gao, Xudong; Zhang, Chi; Yu, Dengfei; Zang, Dongsheng; Li, Min

doi:10.1016/s1876-3804(19)60251-x

Cited by 5 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Its main characteristics are that the sand body is continuous, and mudstone or impermeable layer is developed on both the upper and lower parts of the sand body. Although some single sand bodies are connected with adjacent layers due to no interlayer, their internal fluid still constitutes an independent reservoir [1][2][3][4][5][6][7][8][9][10]. The chief geological factors affecting the distribution of remaining oil include sedimentary microfacies and the con-figuration relationship of the single sand body, reservoir lithology, physical properties, and heterogeneous characteristics.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Oil-Water Distribution Law and Main Controlling Factors of Meandering River Facies Reservoir Based on the Single Sand Body: A Case Study from the Yan 932 Layer of Y Oil Area in Dingbian, Ordos Basin

Shi

Yuan³

et al. 2023

Geofluids

View full text Add to dashboard Cite

After the oilfield development enters the medium and high water cut stage, the fine three-dimensional description of the single sand body, the distribution rules of the remaining oil, and its main controlling factors have become the focus of research. The premise is to understand the original oil and water distribution characteristics and the important influencing factors of the reservoir. Taking the Yan 932 reservoir of Y oil area in Dingbian as an example, combined with the meandering river sedimentary model, this paper uses dense well pattern logging data to dissect single sand body on the foundation of the core and logging results. The conclusion shows that, first, Yan 932 layer is divided into two stages: Yan 932-1 and Yan 932-2, which constitute four single sand body superposition configuration modes, namely, type I, type II, type I & II, and type I/II. Second, type I & II is mainly developed in the sand body of the main channel. In the west of the main channel sand body, type I, type II, and type I/II are developed. Only type II is developed in the east of the main channel sand body. Thirdly, sedimentary microfacies, sand body thickness, sand body configuration, and structural characteristics are the key factors influencing the oil-water distribution law of the Yan 932 reservoir.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of Oil-Water Distribution Law and Main Controlling Factors of Meandering River Facies Reservoir Based on the Single Sand Body: A Case Study from the Yan 932 Layer of Y Oil Area in Dingbian, Ordos Basin

Shi

Yuan³

et al. 2023

Geofluids

View full text Add to dashboard Cite

show abstract

“…With the breakthrough in oilfield development and architectural structure theory, scholars have studied various types of sand body architecture, outcrop measurements, modern sediment systems, underground sand bodies, and reservoir modeling [2], of which the meandering river point bar sand body is the most extensively studied ( [1,[3][4][5][6]; Ji et al 2012; [7][8][9]). It is widely believed that a large amount of remnant oil can exist in the upper part of a point bar sand body due to the shielding of the interlayers of lateral deposits, whereas little or no remnant oil exist at the bottom due to the erosion of the lateral accretion [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…(a) Plane view of the channel patterns in the PI2 layer. (b) Vertical profile of the channel in the PI2 layer 8. Geofluids the channel, and numerous parameters increase significantly in a similar way to the other flow units, which have obvious differences, thereby reflecting the characteristics of high flow velocity.…”

mentioning

confidence: 98%

Flow Unit Model of Channel Sand Body and Its Effect on Remnant Oil Distribution: A Case Study of PI Formation in the Eastern Transition Zone of Daqing Oilfield

Yue

Wen

et al. 2020

Geofluids

View full text Add to dashboard Cite

To analyze the effect of various flow units in a channel sand body on remnant oil, we established a connection between various flow unit types and the remnant oil distribution. Using stratigraphic correlation and the characterization of sedimentary microfacies, we describe a single sand body, point bar, and narrow channel located at the injection-production well pattern of well B2-60-FB271 in the Eastern transition zone of the Daqing Placanticline. Architecture models of the point bar and narrow channel are also established using a series of parameters from different measurement methods. Four types of flow units (strong-current limiting, medium-current limiting, weak-current limiting, and none-current limiting) in the point bar sand body were identified, whereas one type, unshielded unit, was identified in the narrow channel. Geological parameters, such as porosity, permeability, and pore-throat radius (r50), were optimized to quantitatively characterize these various flow units. Samples were obtained from well B2-60-FB271 and analyzed by the freeze-fluorescence thin section technique. According to the displacement degree, the microscopic remnant oil was divided into three types: (1) free-state remnant oil, (2) semi-free-state remnant oil, and (3) bound-state remnant oil. We found that the strong-current limiting flow unit in the point bar is the enrichment area of free-state microscopic remnant oil and that the medium-current limiting and weak-current limiting flow units also have relatively high free microscopic remnant oil. These constitute the remaining oil enrichment areas in the study area.

show abstract

Intelligent architecture modeling for multilevel fluvial reservoirs based on architecture interface and elements

Niu,

Hu,

Wei

et al. 2024

Energy Geoscience

View full text Add to dashboard Cite

Trend judgment of abandoned channels and fine architecture characterization in meandering river reservoirs: A case study of Neogene Minhuazhen Formation NmIII2 layer in Shijiutuo bulge, Chengning uplift, Bohai Bay Basin, East China

Cited by 5 publications

References 8 publications

Analysis of Oil-Water Distribution Law and Main Controlling Factors of Meandering River Facies Reservoir Based on the Single Sand Body: A Case Study from the Yan 932 Layer of Y Oil Area in Dingbian, Ordos Basin

Analysis of Oil-Water Distribution Law and Main Controlling Factors of Meandering River Facies Reservoir Based on the Single Sand Body: A Case Study from the Yan 932 Layer of Y Oil Area in Dingbian, Ordos Basin

Flow Unit Model of Channel Sand Body and Its Effect on Remnant Oil Distribution: A Case Study of PI Formation in the Eastern Transition Zone of Daqing Oilfield

Intelligent architecture modeling for multilevel fluvial reservoirs based on architecture interface and elements

Contact Info

Product

Resources

About