S-Wave Velocity Estimation Method in Carbonate Reservoir
详细信息
- 责任者：Liu Xinxin (School of Geosciences ; China University of Petroleum ; Qingdao 266580 ; China) ; Yin Xingyao
- 刊名：Journal of China University of Petroleum
- 出版年：2013
- 卷期：37(1)
- 关键词：碳酸盐岩储集层 ; carbonate reservoirs ; 速度分析 ; velocity analysis
- 页码：p.42-49
- 图表：illus., 1 table, 28 refs.
- 分类号：1600
- issnNo：ISSN1673-5005
- isbnNo：CN37-1441/TE
摘要
Based on rock physics theory,the elastic modulus of rock matrix,rock frame and the velocities of saturated carbonate rocks were calculated.Considering pore shape and connectivity,pores of carbonate rocks were divided into four types: vugs,interparticle pores,cracks and shale pores.The aspect ratio and porosity of each pore type were calculated.An inversion method based on adaptive genetic algorithm was proposed.The bulk and shear modulus of mineral components were inversed using measured P-wave velocities as a constraint.Based on this description of mineral compositions and pore microstructure,S-wave velocities were calculated using Patchy saturation model.The S-wave velocity estimation method was applied to actual logging data,and the favorable results were obtained.The method can provide benefit for complex carbonate reservoir prediction.
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