Application of ultra-deep sandstone reservoirs prediction technology under controlled seismic facies in Yudong block of Tabei Uplift, Tarim Basin, China

Zhou, Shengyang; Liu, Yongfu; Han, Jian; Haining, Luo; Yang, Fengying; Cui, Yuzhe; Peng, Peng; Zhang, Huifang; Du, Liang; Liu, Zheng

doi:10.1016/j.jnggs.2020.05.001

Cited by 9 publications

(7 citation statements)

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“…This further confirms that the thin sandstone of the Baxigai Formation has good exploration and development potential [23,24]. Conventional geophysical methods based on 3D seismic data are widely used to predict the spatial distribution of thin sand bodies [25,26] for hydrocarbon exploration.…”

Section: Introductionsupporting

confidence: 58%

Seismic Response Variance of Depositional Sequences: Implications for Reservoir Prediction in Lacustrine Basin

He,

Yang,

et al. 2023

Processes

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In recent years, lithologic oil and gas reservoirs have become an important target in continental hydrocarbon-bearing basins. Geophysical prospecting technology using seismic data is an indispensable tool for oil and gas exploration. However, while previous work has paid much attention to the seismic responses of reservoirs (sandstones), the seismic responses of depositional sequences composed of sandstone–mudstone cycles are not well understood in reservoir prediction. This problem seriously restricts efficient oil–gas exploration and development. The Cretaceous Baxigai Formation in the Yingmaili area, west of the Tabei Uplift, is an important exploration target for lithologic oil and gas reservoirs in the Tarim Basin. The Baxigai Formation is deeply buried with thin thickness. The Baxigai Formation in the study area is divided into a lower sandstone section and an upper mudstone section. Braided river delta sand bodies are developed in the lower sandstone section, and braided river delta sand bodies and beach bar sand bodies are developed in the upper mudstone section. According to the difference in the depositional sequences in different zones, five types of the vertical combination style of sandstone and mudstone were identified. Through seismic forward modeling, the seismic response variance of the five kinds of sequence models was established. Then, the amplitude attributes were extracted via wavelet decomposition to reflect the distribution of sandstone–mudstone in different zones. This could help predict the vertical and horizontal distributions of different depositional sequences and the sandstones in these sequences. During the sedimentary period of the upper mudstone section of the Baxigai Formation, the beach bar sand bodies were distributed along the northeast coast. The thin sand bodies pinched out along the up-dip direction to form favorable lithologic traps, which has important significance for lithologic reservoir exploration.

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Section: Introductionsupporting

confidence: 58%

Seismic Response Variance of Depositional Sequences: Implications for Reservoir Prediction in Lacustrine Basin

He,

Yang,

et al. 2023

Processes

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“…Paleo-uplift were weak in activities, and the accommodation was sustained in the deposition period of the Baxigai Formation (Zhao et al, 2022). Influenced by regional tectonic movement, the paleogeographic pattern of the southeast high and northwest bottom was formed in the study area, which controlled the distribution of sedimentary facies (Su et al, 2020).…”

Section: Figurementioning

confidence: 93%

“…It is adjacent to the Kuqa Depression in the north and the Northern Depression Belt in the south and consists of the Wensu Bulge, the Yingmaili Low Bulge, the Luntai Bulge, the Lunan Low Bulge, and the Korla Bulge (Li et al, 2012;He et al, 2008;Sun et al, 2020;. The Tabei Uplift is a long-term development of the Paleozoic craton "residual paleo-uplift" with the characteristics of basement uplift (Su et al, 2020). The Uplift was finalized after the late Hercynian movement in the late Paleozoic.…”

Section: Figurementioning

confidence: 99%

Sedimentary characteristics and model of seasonal deltaic sandstone: a case study on the continental red bed from the Cretaceous Baxigai Formation, Tarim Basin, NW China

Wang,

Hu,

et al. 2024

Front. Earth Sci.

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Seasonal delta is a sandy fan-shaped sedimentary system formed by seasonal river flooding in continental basins. Modern sedimentary finds that seasonal deltas mainly develop in an arid-semi-arid climate environment with gentle terrain. However, the study of seasonal deltas in ancient rock records is still insufficient, leading to misinterpretations as other sedimentary systems, which poses challenges to the correct understanding of the origin and spatial distribution of sand body deposits. In this study, the red bed deposits of the Cretaceous Baxigai Formation in the west of the Tabei Uplift were selected as the research object. Based on core observation and description, a comprehensive analysis of the sedimentary environment, sedimentary characteristics and sedimentary model of the Baxigai Formation was carried out using data such as well-logging and analytical testing, combined with modern depositional characteristics. Research shows that the sedimentary sequence of the Baxigai Formation red bed developed a seasonal delta sedimentary system in the arid climate. The seasonal delta deposits provide an opportunity to understand the influencing of river flow and total sedimentary loading vary greatly on the sedimentary model, sedimentary mechanism, and distribution of sand bodies in arid climates. The sedimentary process of the seasonal delta in the Baxigai Formation was controlled by the dual-stage sedimentation process in an arid paleoclimate. During the flood period, the supercritical flow sedimentary structures are widely developed in the major distributary channels, and the distributary channels migrate and bifurcate frequently. On the delta plain, crevasse channels are formed through the avulsion of major distributary channels. During the dry period, due to the consumption of water seepage and evaporation transfer, terminal distributary channels are abandoned, crevasse channels are not developed, and the sediment is exposed. The density of the distributary channels is reduced, and the total sedimentary loading is low. The distributary channels sand body is the skeleton sand body of the seasonal delta. This study is of great significance for accurately explaining the formation process of seasonal deltas and provides a useful reference for further exploration and deployment of oil and gas reservoirs and paleogeographic reconstruction in the study area.

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“…A seismic facies is a representation of a specific sedimentary facies or the seismic response characteristics of a geo-body (Roksandić, 1978;Coléou et al, 2003;Su et al, 2019). Seismic waves have different propagation characteristics in different types of sedimentary systems; the lithology, physical properties, and fluid properties of different geologic bodies often result in changes in seismic waves, with respect to their amplitude, frequency, and phase, and ultimately changes in their spatial reflection characteristics (Duan et al, 2011;Gao and Yuan, 2016).…”

Section: Seismic Response Characteristicsmentioning

confidence: 99%

Quantitative prediction of sand bodies in a sparsely explored zone of the Tarim basin: A case study of the aketao area

Shi

Zhou

et al. 2023

Front. Earth Sci.

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Thin sandstone reservoirs of the fan delta front sub-facies occur in the early Neogene (Miocene) series of the Aketao (Akto) structural belt within the Kunlun piedmont zone of the Tarim Basin. Oil and gas reservoirs in this area correspond to stratigraphic traps. However, owing to the low density of the 2D seismic survey grid deployed in the Aketao belt, inferior seismic data quality, and lack of well logging data, reservoir prediction in this area suffers from a multiplicity of problems and it is difficult to effectively identify sand bodies. Here, a new research approach is proposed involving the use of 3D seismic, well logging, and drilling data from a neighboring highly-explored 3D seismic survey area as a reference for the 2D seismic interpretation of the non-drilled Aketao survey area. Moreover, this approach is integrated with forward modeling and the inversion of post-stack seismic data to identify sand bodies. A comparison of the seismic reflection characteristics clarifies that these 3D and 2D seismic survey areas share similar sedimentary environments. Forward modeling confirms their similar reservoir characteristics, while the reservoir distribution in the 2D seismic survey area is effectively mapped via the inversion. The results show that for a 2D seismic survey area characterized by a low degree of hydrocarbon exploration and appraisal, and a lack of well logging data, the proposed approach can confirm the sedimentary characteristics that correspond to the seismic reflection characteristics, and can quantitatively map the reservoir thickness.

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Application of ultra-deep sandstone reservoirs prediction technology under controlled seismic facies in Yudong block of Tabei Uplift, Tarim Basin, China

Cited by 9 publications

References 0 publications

Seismic Response Variance of Depositional Sequences: Implications for Reservoir Prediction in Lacustrine Basin

Seismic Response Variance of Depositional Sequences: Implications for Reservoir Prediction in Lacustrine Basin

Sedimentary characteristics and model of seasonal deltaic sandstone: a case study on the continental red bed from the Cretaceous Baxigai Formation, Tarim Basin, NW China

Quantitative prediction of sand bodies in a sparsely explored zone of the Tarim basin: A case study of the aketao area

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