用斜井岩芯的声发射效应确定深层地应力
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摘要
声发射效应方法是确定油田地应力的一种有效方法,但以往主要应用于竖井情况。本文首次将声发射效应方法应用于斜井的非定向取芯岩样,并通过应为坐标变换,求解非线性方程组,确定大地坐标中的主地应力。此方法应用于渤海油田并取得了满意效果。
The acoustic emission technique is an effective method to determine in-situstresses, which is mainly applied to vertical wells. A new method is developed todetermine in-situ stresses by using acoustic emission technique of undirected cores ofinclined well. The principal stresses are given by using coordinate system transformationsand solving nonlinear equations. The method is applied successfully in Bobai oil field.
引文
1刘建中.油田应力测量.北京:地震出版社,1993
    2高建理,丁建民.中国海区及其领域的原地应力测量.地震学报,1992,14(1):424~430
    3陈勉,陈治喜,黄荣樽.大斜度油井井壁的坍塌与破裂.见:中国岩石力学与工程学会第三次大会论文集.北京:中国科技出版社,1994,424~430
    4Che Mian,Hugng Rongzun. A Hydraulic fracturing criterion of deviated wels.In: Liu Huai-heng ed.Proceedings of International Symposium on Application of Computer Methods in Rock Mechanics and Enineering.Xi'an:1991,1:117~122

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