新疆石油地质

›› 2016, Vol. 37 ›› Issue (3): 1-1.doi: 10.7657/XJPG20160311

• 论文 •    

碳酸盐岩缝洞体横向最小可分辨距离定量分析

李凡异1，狄帮让2，魏建新2，徐建永1，武爱俊1，印斌浩1   

  1. (1.中海油研究总院,北京 100028;2.中国石油大学 油气资源与探测国家重点实验室,北京 102249)
  • 出版日期:2019-01-01 发布日期:1905-07-14

Quantitative Analysis on Minimum Lateral Resolution Range of FractureCave Bodies in Carbonate Rocks

LI Fanyi1, DI Bangrang2, WEI Jianxin2, XU Jianyong1, WU Aijun1, YIN Binhao1   

  1. (1.CNOOC Research Institute, Beijing 100028, China; 2.State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China)
  • Online:2019-01-01 Published:1905-07-14

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摘要： 定量分析缝洞体横向最小可分辨距离是碳酸盐岩缝洞型油气藏勘探开发过程中的一个实际问题。利用双聚焦理论推导出空间子波函数，分别依据瑞雷准则和雷克准则，在理论层面上分析了横向最小可分辨距离，认为点散射体横向最小可分辨距离可近似认为是空间子波主瓣宽度的1/2，其数值与地震波波长呈正比，与最大出射角的正弦值呈反比。从实际应用的角度，开展了地震物理正演模拟研究，为实际生产提供了缝洞体横向最小可分辨距离的精度依据。

Abstract: Quantitative analysis on fracture?cave bodies’lateral minimum resolution range is a practical problem for the prospecting and development of fracture?cave carbonate reservoirs. This paper derives a spatial wavelet function using the double?focusing theory, analyzes the minimum lateral resolution range based on criteria of Rayleigh and Rickers theoretically. It is considered that the minimum lateral resolution range of point scatterer could be 1/2 of the main lobe width of the spatial wavelets approximately, whose value is proportional to seismic wave length and shows an inverse correlation with the sine value of the maximum emergence angle. Seismic forward modeling is performed from the perspective of practical application, which provides a precision basis of the minimum lateral resolution range of fracturecave bodies for actual production

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