| 对扶余油田套管变形的几点看法 |
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| 引用本文： | 刘建中,曹新玲,李自强,陈宗哲,戴焕栋.对扶余油田套管变形的几点看法[J].地震学报,1987,9(1):65-73. |
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| 作者姓名： | 刘建中 曹新玲 李自强 陈宗哲 戴焕栋 |
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| 作者单位： | 1. 国家地震局地壳应力研究所2. 国家地震局地球物理研究所3. 吉林油田 |
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| 摘 要： | 我们利用扶余油田的压裂资料,分析了该油田应力场的特点,探讨了油田套管变形的原因.认为该区以水平压应力作用为主.由于高压注水,有效法向应力降低,引起地层间的相对滑动,造成套管变形.主要的套管变形是由于地层沿水平间断面--AB 界面的滑动造成的.通过控制注入压力和注水方式可以降低 AB 界面中的空隙压力,使界面上的法向应力有所恢复,降低套管变形的速率.
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SOME IDEAS ABOUT THE DEFORMATION OF CASED HOLES IN THE FUYU OIL FIELD |
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| Affiliation: | 1. Institute of Crustal Dynamics, Stale Seismological Bureau;2. Institute of Geophysics, State Seismological Bureau;3. Oil Field of Jilin Province |
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| Abstract: | The hydrofracturing data in the Fuyu oil field were used in the analysis of stress in the oil field, and the cause for the deformation of casing was discussed. The action of horizontal compress-stress plays a leading role in this region. Due to high pressure water injection, the effective normal stress is decreased, and this sets off the relative slide between the rock layers and resulting in the deformation of casing. The major deformation of casing is caused by slipping along the horizontal boundary surface AB.If the pressure of injection and the mode of water-injection can be controled, it may be possible to decrease the pore pressure of the AB boundary surface and the normal stress at the boundary surface can be restored and the rate of casing deformation can be decreased. |
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