基于井震结合的南川地区页岩气储层叠后裂缝预测技术

doi:10.13809/j.cnki.cn32-1825/te.2022.03.008

Abstract

Abstract:

Natural fractures are well developed in shale gas reservoirs, which have great influence on reservoir reconstruction and later fracturing effect. Therefore, the fracture prediction is carried out by ant tracking technology based on the combination of logging and seismic. Firstly, the curves for the fracture development density of the wells are obtained by the calculation of the natural fractures by well logging. Then, by the comparison of various simulation methods, the Gaussian random method is selected, which can reflect the heterogeneity of fracture development in shale reservoir and establish the natural fracture model between wells. Finally, the Co-Kriging interpolation method is used to reflect the properties of inter-well fracture development, and ant attributes are input for the quality control in order to establish the prediction model of natural fractures in Nanchuan area. According to the prediction results, the fractures in Nanchuan area develop along the NE direction. The fractures in the east wing of Pingqiao anticline are more developed than those in the core, and the fracture network are easy to form. The prediction results are highly consistent with the actual drilling wells. This fracture prediction technology can guide the exploration and development of this area.

Key words: natural fracture, fracture density, ant tracking, shale gas reservoir, Nanchuan area

CLC Number:

TE122

SUN Xiaoqin. Poststack fracture prediction technology of shale gas reservoir based on combination of well and seismic in Nanchuan[J].Petroleum Reservoir Evaluation and Development, 2022, 12(3): 462-467.

Figures/Tables 7

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Poststack fracture prediction technology of shale gas reservoir based on combination of well and seismic in Nanchuan

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