薄层砂体识别的地震沉积学研究——以 TZ12 井区为例

doi:10.3969/j.issn.1673-8926.2015.06.010

LITHOLOGIC RESERVOIRS ›› 2015, Vol. 27 ›› Issue (6): 72-77.doi: 10.3969/j.issn.1673-8926.2015.06.010

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Seismic sedimentology for thin sand body identification: A case study from TZ12 well block

Chang Shaoying¹,Zhang Xianlong¹,Liu Yongfu²,Liu Weibo²,Yu Yizhi³,Shi Hongling⁴

1. PetroChina Hangzhou Research Institute of Geology ， Hangzhou 310023 ， China ； 2. PetroChina Tarim Oilfield Company ，
Korla 841000 ， Xinjiang ， China ； 3. College of Geosciences ， China University of Petroleum ， Beijing 102249 ， China ；
4. Institute of Geodesy and Geophysics ， Chinese Academy of Sciences ， Wuhan 430000 ， China

Online:2015-12-20 Published:2015-12-20

Abstract

Abstract:

Prediction of thin sand bodies is an important issue in the fine evaluation of reservoir. Seismic sedimentology is an important research method of predicting horizontal distribution of thin sand bodies at present. But in the course of the study, there are problems that seismic data quality is poor and thin sand body description is difficult. Guided by the theory of seismic sedimentology, combined with the concept that seismic phase axis tilt angle and internal structure are controlled by frequency and 3D seismic lateral resolution is higher than vertical resolution, on the basis of classical research method of seismic sedimentology, this paper increased two technologies: frequency-broadening processing and prediction of reservoir parameters by multi-seismic attributes. Theses technologies can be used to effectively identify the lateral distribution of thin sand body and predict the thin sand body thickness and sandy ground ratio. Finally, a set of method for identifying thin layer by seismic sedimentology suitable for TZ12 well block was summarized.

Key words: gas hydrate , finite volume method , water injection rate , water temperature , porosity

Chang Shaoying,Zhang Xianlong,Liu Yongfu,Liu Weibo,Yu Yizhi,Shi Hongling. Seismic sedimentology for thin sand body identification: A case study from TZ12 well block[J].LITHOLOGIC RESERVOIRS, 2015, 27(6): 72-77.

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