Abstract：The north slope of Gangxi is located in the northeast of Beidagang buried hill tectonic belt. The formation of Es32 had been first tilted by tectonic movement, and later suffered by denudation. Therefore unconformity was formed. This kind of unconformity plays an important role in oil and gas migration and enrichment. There are three types of unconformity in this area: truncation unconformity, fold unconformity, and cut-toplap integration. Among of them truncation unconformity is widely distributed, and has a great potential. We first classify the truncation unconformity with event reflection charateristeics, and build truncation belt. Then we delineate a few sand bodies with seismic waveform characteristics of oil-bearing sand body, and build 3D unconformity models with vertical structure. The delineated sand bodies are verified and preffered with adaptive boosting (Adaboost) of cluster, a hydrocarbon detection approach. Drilling results prove the validity of the proposed approch.
臧明峰, 白玉花, 孙淑云. 港西北坡Es32段削截不整合及有利砂体分布[J]. 石油地球物理勘探, 2015, 50(5): 973-979.
Zang Mingfeng, Bai Yuhua, Sun Shuyun. Unconformity of the Section Es32 and sanbody distribution in the north slope, Gangxi. OGP, 2015, 50(5): 973-979.
Li Hongxiang,Fu Dongli,Li Huishen et al. Exploration and practice of the third member in Shahejie formation of southwestern margin in north slop of Gang-xi.Xinjiang Geology,2009,27(4):394-398.
Wu Kongyou,Zang Mingfeng,Cui Yongqian et al. Structural characteristics of the unconformities on the top of pre-tertiary and reservoir types in Jizhong depression.Journal of Xi'an Shiyou University (Natural Science),2011,26(1):7-13.
Zhao Meifang,Luo Ali,Wu Fuchao et al.The application of adaptive boosting method in automated spectral classification of active galactic nuclei. Spectroscopy and Spectral Analysis,2008,28(2):472-477.
