方位纵波裂缝检测技术在深层火山岩中的应用
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摘要
根据裂缝的尺度不同,检测裂缝的方法多种多样,检测效果也不尽相同。纵波方位各向异性裂缝预测技术是目前国内外正在发展和不断完善的技术。利用地震纵波在各向异性介质中传播时发生振幅、频率、速度等随方位角的变化,研究了深层火山岩裂缝发育方位和发育密度的检测方法,该方法预测结果与裂缝发育带的微观特征有更加密切的关系。以徐家围子断陷F区块的火山岩储集层为目标进行了裂缝检测,取得了较好的效果。
In view of fractural detection,a variety of methods are adopted in terms of fractural size,but different methods give some different effects. P-wave azimuth anisotropy technique is now one of developing and improving techniques for reservoir fractural detection at home and abroad. According to variation of amplitude,frequency and velocity with azimuth when P-wave propagates in anisotropy medium,this paper presents a method for detection of fracture-developed azimuth and density in deep volcanic reservoir. It is found that the prediction result by this method is related closely with microscopic feature of fracture-developed zone. Taking the volcanic reservoir in F block in Xujiaweizi fault depression as a target,its fractural detection has been made with good effect.
In view of fractural detection,a variety of methods are adopted in terms of fractural size,but different methods give some different effects. P-wave azimuth anisotropy technique is now one of developing and improving techniques for reservoir fractural detection at home and abroad. According to variation of amplitude,frequency and velocity with azimuth when P-wave propagates in anisotropy medium,this paper presents a method for detection of fracture-developed azimuth and density in deep volcanic reservoir. It is found that the prediction result by this method is related closely with microscopic feature of fracture-developed zone. Taking the volcanic reservoir in F block in Xujiaweizi fault depression as a target,its fractural detection has been made with good effect.
引文
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[2]刘书强,胡前泽.叠前裂缝检测技术浅谈[J].吐哈油气,2008,13(1):68-70.
[3]曲寿利,季玉新,王鑫.全方位P波属性裂缝检测方法[J].石油地球物理勘探,2001,36(4):390-397
[4]甘其刚,高志平.宽方位AVA裂缝检测技术应用研究[J].天然气工业,2005,25(5):42-43
[5]甘其刚,杨振武,彭大钧.振幅随方位角变化裂缝检测技术及其应用[J].石油物探,2004,43(4):373-376.
[6]杨勤勇,赵群,王世星,等.纵波方位各向异性及其在裂缝检测中的应用[J].石油物探,2006,45(2):177-181.
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