Organic geochemical characteristics and organic matter accumulation of the Eocene lacustrine source rock in the Yingxi area, Western Qaidam Basin, China

Fan, Yi; Huang, Yi; Mu, Chuanlong; Tang, Wenqiang; Li, Na; Chen, Yun; Tian, Kangzhi; Shi, Yuxiang; Wu, Jinxuan; Gao, Xia

doi:10.1007/s00531-023-02297-3

Cited by 2 publications

(1 citation statement)

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“…By the year 2020, the Qaidam Basin boasted 32 identified oil and gas fields, with combined proven reserves exceeding 6.4 billion tons [8,9]. Previous studies in this area mostly described the reservoir characteristics of oilfields from the perspectives of geology, sedimentary petrology, and geochemistry [10,11]; there has not been any research on utilizing interferometric synthetic-aperture radar (InSAR) technology for deformation characteristic monitoring and reservoir parameter inversion. Therefore, using InSAR technology to monitor the deformation of the oilfields in the western basin not only provides guidance for sustainable oil extraction but also offers a new approach to understanding the reservoir characteristics in this region.…”

Section: Introductionmentioning

confidence: 99%

Oilfield Reservoir Parameter Inversion Based on 2D Ground Deformation Measurements Acquired by a Time-Series MSBAS-InSAR Method

Liu,

Zhang,

Yang

et al. 2023

Remote Sensing

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Time-series ground deformation monitoring and reservoir parameter inversion are crucial for the dynamic assessment of oilfield resources and sustainable exploitation in oilfields. As some of the regions with the richest oil reserves in China, the oilfield areas in the western Qaidam Basin were selected as a typical study area. Firstly, we used SAR images collected by the Sentinel-1A satellite from January 2021 to December 2022 and applied the multidimensional small baseline subset (MSBAS) method to obtain vertical and east–west deformation measurements. On this basis, a nonlinear Bayesian inversion method was applied to model the shallow reservoir in a series of complex deformation areas, based on a single-source model and a multi-source model, respectively. As a result, the ground deformation monitoring results obtained by long time-series InSAR clearly reflect the uneven ground deformation caused by the oil extraction and water injection operation processes. There was slight subsidence in the Huatugou oilfield, while significant uplift deformation occurred in the Ganchaigou oilfield and the Youshashan oilfield, with a maximum uplift rate of 48 mm/year. Further analysis indicated that the introduction of the 2D deformation field helps to improve the robustness of oilfield reservoir parameter inversion. Moreover, the dual-source model is more suitable than the single-source model for inverting reservoir parameters of complex deformation. This study not only fills the gap of InSAR deformation monitoring for the oilfields in the western Qaidam Basin but also provides a theoretical reference for the model and method selection of reservoir parameter inversion in other oilfields.

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Section: Introductionmentioning

confidence: 99%