| 塑性应变准则在油井出砂预测中的应用 |
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| 引用本文： | 练章华,杨龙,段永刚,刘向君,唐波. 塑性应变准则在油井出砂预测中的应用[J]. 西南石油学院学报, 2003, 25(4): 16-18 |
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| 作者姓名： | 练章华 杨龙 段永刚 刘向君 唐波 |
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| 作者单位： | [1]西南石油学院石油工程学院，四川南充637001 [2]中国石油天然气集团公司西安管材研究所 |
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| 基金项目： | 国家自然科学基金项目 ( 50 0 74 0 2 5)，四川省杰出青年学科带头人基金项目 ( 0 3ZQ0 2 6 - 0 4 4) |
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| 摘 要： | 用塑性应变准则建立了油井出砂预测的有限元力学模型，岩石的屈服应力准则用Drucker-Prager准则。在某油画地层参数下，用该模型得到了不同井筒压差所对应井壁附近的塑性应力、应变变化结果，用这些结果可预测油井出砂情况。根据临界塑性应变，确定了井壁不出砂的临界生产压差，为油井正常生产提供了理论数据。
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| 关 键 词： | 出砂预测 塑性应变准则 油井 Drucker-Prager准则 |
| 文章编号： | 1000-2634(2003)04-0016-03 |
| 修稿时间： | 2002-10-21 |
Application of Plastic Strain on Prediction of Sand Production in Oil Well |
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| LIAN Zhang hua. Application of Plastic Strain on Prediction of Sand Production in Oil Well[J]. Journal of Southwest Petroleum Institute, 2003, 25(4): 16-18 |
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| Authors: | LIAN Zhang hua |
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| Abstract: | FEM Model of sand production in oil well was established with plastic strain criteria, the yield stress of the rock is the Drucker Prager criteria. According to the parameters of formation in some oilfield, the plastic stress strain results was obtained under the difference pressure with the model in the paper, the sand production can be predicted in light of the results. The criteria production pressure without sand production was determined according to the criteria plastic strain value. It provided the theoretical data for the normal production in oil well. |
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| Keywords: | sand production prediction plastic strain criteria oil well Drucker Prager criteria |
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