Abstract：The high temperature and high pressure gas reservoir in the Yinggehai Basin is an unclassical system of gravity flow deposits where the reservoir is very heterogenous, the contact between sand bodies is very complicated. Affected by shallow gas and diaper microfissures, the seismic resolu-tion and SNR are low. There are fuzzy zones, and it is difficult to accurately distinguish the gas and water layers. The multiplicity of seismic attributes are not conducive to high precision reservoir and hydrocarbon identification. Taking the Huangliu formation in the Dongfang D gasfield as a case, a high precision reservoir and hydrocarbon identification technology for high temperature and high pressure complex gas reservoir is proposed. First, obtain high quality seismic data by high density seismic acquisition, then conduct seismic amplitude compensation and broadband geostatistical inversion by combining geostatistical inversion and broadband inversion, and finally identify the gas range by frequency tuning decomposition. The study result is useful for high precision reservoir and hydrocarbon identification at high temperature and high pressure conditions.
刘巍, 李雷, 马光克. 莺歌海盆地高温高压复杂气藏高精度储层预测及含气性识别[J]. 石油地球物理勘探, 2020, 55(s1): 64-71.
LIU Wei, LI Lei, MA Guangke. High precision prediction and identification of high temperature and high-pressure gas reservoir in Yinggehai Basin. Oil Geophysical Prospecting, 2020, 55(s1): 64-71.
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