Geophysical Identification Technology of Ultra Deep Water and Shallow Gas Reservoirs in Qiongdongnan Basin

被引：0
|
作者：
Huang S. [1 ]
Li F. [1 ]
Song P. [1 ]
Hu B. [1 ]
Sun W. [1 ]
机构：
[1] Zhanjiang Branch of CNOOC China Limited, Zhanjiang
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2024年 / 49卷 / 01期
关键词：
deep water area; DHIP; gas saturation prediction; petrophysical modeling; Qiongdongnan Basin; seismic reflection characteristic; shallow strata;
D O I：
10.3799/dqkx.2022.339
中图分类号：
学科分类号：
摘要：
Shallow gas occurs in unconsolidated rocks with low diagenetic strength in the shallow part, and its petrophysical characteristics and seismic reflection characteristics are different from those of deep diagenetic rocks. Using shallow logging data, it analyzes the effects of shallow lithology and fluid properties on rock velocity, density and P-S wave velocity ratio in the basin, and defines the sensitive elastic parameters of shallow gas reservoir. On this basis, the particle contact petrophysical model is used for shallow petrophysical modeling, and the variation templates of P-wave velocity and AVO characteristics of shallow gas and water layers with porosity are obtained. Based on the seismic reflection, the seismic reflection characteristics of shallow gas layer are identified, and the characteristics of shallow gas layer are identified by using the seismic reflection method. Direct Hydrocarbon Identifier by Induced Polarization (DHIP) exploration technology is applied to the saturation prediction of shallow gas reservoir for the first time, and the qualitative prediction of shallow gas reservoir saturation in the study area is realized. The shallow gas reservoir identification technology has been applied in the exploration of Qiongdongnan Basin, which is of constructive significance to the subsequent shallow gas reservoir exploration in the basin. © 2024 China University of Geosciences. All rights reserved.
引用
收藏
页码：313 / 323
页数：10
相关论文
共 26 条
  • [1] Deng Y., Liu S.Y., Li Y.S., Et al., Application of Time-Frequency Analysis Technology in Evaluation of Channel in Ledong Area, Earth Science, 44, 8, pp. 2619-2626, (2019)
  • [2] Du H., Shi W. Z., Liang J. Q., Et al., Genesis of Mass Transport Deposits and Their Effect on Gas Hydrate Accumulation in the Qiongdongnan Basin, Oil Geophysical Prospecting, 56, 4, pp. 869-881, (2021)
  • [3] He J.X., Ning Z.J., Zhao B., Et al., Preliminary Analysis and Prediction of Strategic Replacement Area for Gas Hydrate Exploration in South China Sea, Earth Science, 47, 5, pp. 1549-1568, (2022)
  • [4] He Y.L., Liang J.Q., Shi W.Z., Et al., Influencing Factors and Accumulation Modes of Gas Hydrate in South Low Uplift and Its Surrounding Area of Qiongdongnan Basin, Earth Science, 47, 5, pp. 1711-1727, (2022)
  • [5] Huang S. Z., Song P., Zhu J. T., Et al., Research on the Method for Gas Hydrate Identification Based on Broadband Seismic in Deep Water Areas, Marine Geology Frontiers, 37, 7, pp. 52-59, (2021)
  • [6] Li L., Zhang C., Yan C., Et al., Characteristics and Genetic Mechanism of a Large-Scale Submarine Gravity-Driven System in Huaguang Depression, Qiongdongnan Basin, Earth Science, 46, 10, pp. 3707-3716, (2021)
  • [7] Liu J., Yang R., Zhang J.H., Et al., Gas Hydrate Accumulation Conditions in the Huaguang Depression of Qiongdongnan Basin and Prediction of Favorable Zones, Marine Geology ＆ Quaternary Geology, 39, 1, pp. 134-142, (2019)
  • [8] Liu S.Y., Sun W.Y., Deng Y., Et al., Research and Application of Oil and Gas Detection Technology in Frequency Domain in Deep Water Area of Qiongdongnan Basin, Earth Science, 44, 8, pp. 2603-2608, (2019)
  • [9] Liu X. X., Yin X. Y., Luan X. W., Seismic Rock Physical Modelling for Gas Hydrate-Bearing Sediments, Scientia Sinica Terrae, 48, 9, pp. 1248-1266, (2018)
  • [10] Song P., Shallow Migration and Accumulation Systems in the Deep Water Areas of the Qiongdongnan Basin and Their Control on Natural Gas Hydrate Accumulation, Marine Geology Frontiers, 37, 7, pp. 11-21, (2021)
123