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首页> 外文会议>I中俄测井国际学术交流会; 200611; 三亚(CN) >Features of Stress-field in Pubei Fault Block II in Daqing Oilfields and Its Effects on Casing Damage
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Features of Stress-field in Pubei Fault Block II in Daqing Oilfields and Its Effects on Casing Damage

机译：大庆油田普北断裂二段应力场特征及其对套管损害的影响

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摘要

The casing deformation and damage is a severe threat to oilfield routine production, which has drawn more attention in the oilfields inside and outside China. The reasons for casing damages are closely related to the stress-field state. This paper studies Pubei fault block II of Daqing oilfield. Utilizing caliper deformation data, the circumferential stress of casing-damaged well is calculated indirectly. The stress-field of the block is inversed with finite element method and least square method. The casing load dangerous degree is analyzed on the basis of stress-field study. From the dangerous degree of casing load we can see, the casing damages are usually generated near the pay zone. This is in agreement with the casing-damage distribution of Pubei fault block II. The study results about stress-field distribution and casing damages distribution are valuable for recognizing and dealing with areal casing damages.
机译：套管变形和破坏是对油田常规生产的严重威胁，这已引起中国国内外油田的更多关注。套管损坏的原因与应力场状态密切相关。本文研究了大庆油田浦北断裂二段。利用卡尺变形数据，间接计算套管损坏井的周向应力。块的应力场用有限元法和最小二乘法求逆。在应力场研究的基础上分析了套管载荷危险度。从套管载荷的危险程度可以看出，套管损坏通常是在开采区附近产生的。这与浦北断裂二段的套管破坏分布是一致的。有关应力场分布和套管损伤分布的研究结果对于识别和处理区域套管损伤具有重要价值。

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