基于纯纵波地震资料的碳酸盐岩储集层识别

doi:10.7657/XJPG20200515

新疆石油地质 ›› 2020, Vol. 41 ›› Issue (5): 605-611.doi: 10.7657/XJPG20200515

基于纯纵波地震资料的碳酸盐岩储集层识别

张远银¹^,²(), 孙赞东², 杨海军³, 韩剑发³, 张敬霆⁴

1.中国地质调查局油气资源调查中心,北京 100083
2.中国石油大学（北京）地球物理学院,北京 102249
3.中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒 841000
4.中国石油大港油田分公司井下作业公司,天津 300283

收稿日期:2019-12-10 修回日期:2020-05-26 出版日期:2020-10-01 发布日期:2020-10-10
作者简介:张远银（1986-）,男,四川绵阳人,高级工程师,博士,地球物理勘探,（Tel）010-64998654（E-mail）yuanyinshou@163.com
基金资助:
中国地质调查局二级项目(DD20190106);中国地质调查局二级项目(DD20190708);中国地质调查局二级项目(DD20190090);中国地质调查局二级项目(DD20189602)

Carbonate Reservoir Identification Based on Pure P-Wave Data

ZHANG Yuanyin¹^,²(), SUN Zandong², YANG Haijun³, HAN Jianfa³, ZHANG Jingting⁴

1. Oil and Gas Survey, China Geological Survey, Beijing 100083, China
2. School of Geophysics, China University of Petroleum, Beijing 102249, China
3. Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China
4. Downhole Operation Company, Dagang Oilfield Company, PetroChina, Tianjin 300283, China

Received:2019-12-10 Revised:2020-05-26 Online:2020-10-01 Published:2020-10-10

摘要/Abstract

摘要：

针对塔里木盆地古喀斯特型碳酸盐岩储集层埋深大、非均质性强、地震资料品质要求高的特点,引入叠前反演获得纯纵波地震资料,代替全叠加地震资料,以提高波阻抗反演及储集层预测精度。数值模拟结果表明：与理论零偏移距地震资料相比,计算的纯纵波地震资料误差几乎为零,而全叠加地震资料会因地震子波类型、入射角度范围、地层界面性质等的不同产生误差。塔中油田中古8井区碳酸盐岩目标层纯纵波地震资料主频提高了8 Hz,储集层预测结果与钻井吻合率提高了7.39%,为塔里木盆地碳酸盐岩储集层预测提供了切实可行的方案。

关键词: 塔里木盆地, 中古8井区, 碳酸盐岩, 储集层预测, 叠前反演, 纯纵波地震资料

Abstract:

Regarding the characteristics of large burial depth and strong heterogeneity of the paleokarst carbonate reservoir in the Tarim basin, the pure P-wave data calculated from pre-stack inversion are introduced to replace the traditional full-stack seismic data so that the accuracy of wave impedance inversion and reservoir prediction can be improved. The numerical modeling results suggest that compared with the theoretical zero-offset data, the computed pure P-wave data have negligible errors, while the traditional full-stack data inevitably contain errors that might associated with different factors, i.e., wavelet, incidence angle range and reflection boundary. The field data comparison in the Wellblock ZG8, Tazhong area shows that when the dominant frequency of P-wave in target carbonate strata has been improved by 8 Hz, the fitting rate of reservoir prediction result with actual drilling result can be increased by 7.39%, which provides practical methods and corresponding standards for the reservoir prediction in the carbonate reservoirs in Tarim basin.

Key words: Tarim basin, Wellblock ZG8, carbonate rock, reservoir prediction, pre-stack inversion, pure P-wave data

中图分类号:

TE112.24

张远银, 孙赞东, 杨海军, 韩剑发, 张敬霆. 基于纯纵波地震资料的碳酸盐岩储集层识别[J]. 新疆石油地质, 2020, 41(5): 605-611.

ZHANG Yuanyin, SUN Zandong, YANG Haijun, HAN Jianfa, ZHANG Jingting. Carbonate Reservoir Identification Based on Pure P-Wave Data[J]. Xinjiang Petroleum Geology, 2020, 41(5): 605-611.

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基于纯纵波地震资料的碳酸盐岩储集层识别

Carbonate Reservoir Identification Based on Pure P-Wave Data

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