| 非零偏VSP折射效应及井源距选择 |
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| 引用本文： | 尚新路,周黎霞.非零偏VSP折射效应及井源距选择[J].石油物探,1993,32(3):107-111. |
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| 作者姓名： | 尚新路 周黎霞 |
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| 作者单位： | 塔里木石油勘探开发指挥部 库尔勒841000
(尚新路)，塔里木石油勘探开发指挥部 库尔勒841000(周黎霞) |
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| 摘 要： |
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| 关 键 词： | 非零偏 VSP 非源距 折射波 |
| 收稿时间： | 1992-6-1 |
| 修稿时间： | 1992-11-1 |
REFRACTION EFFECTS IN NONZERO-OFFSET VSP AND THE SELECTION OF SOURCE-WELL DISTANCE |
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| Shang Xinglu,Zhon Lixia.REFRACTION EFFECTS IN NONZERO-OFFSET VSP AND THE SELECTION OF SOURCE-WELL DISTANCE[J].Geophysical Prospecting For Petroleum,1993,32(3):107-111. |
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| Authors: | Shang Xinglu Zhon Lixia |
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| Affiliation: | Headquater of oil field exploration and development in Tarim, Kurle 841000 |
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| Abstract: | In nonzero-offset VSP surveys, the source-well distance is an important parameter. Under certain geological conditions,excessively larger source-well distance may cause refractions along interfaces to reach geophones earlier than direct arrivals. Based on model analysis and a set of field z-component data obtained from a nonzero-offset VSP in well 5 of Tazhong ,this paper investigates the influence of excessively large source-well distance on anomalous first arrivals in VSP data and points out the way the refraction effect in nonzreo-offset VSP is removed. In addition. a method to determine the maximum souce-well distance is presented. |
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| Keywords: | Nonzero-offset VSP Critical Source-Well Distance Upgoing RefractionWave |
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