| 高压挤压防砂充填带形态仿真模拟 |
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| 引用本文： | 王伟章,闫相祯.高压挤压防砂充填带形态仿真模拟[J].潍坊学院学报,2009,9(2). |
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| 作者姓名： | 王伟章 闫相祯 |
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| 作者单位： | 王伟章(潍坊学院,山东,潍坊,261061);闫相祯(中国石油大学,山东,东营,257061) |
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| 基金项目： | 高压挤压近井地带形态描述及监测技术研究 |
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| 摘 要： | 出砂是疏松砂岩油藏开采中经常遇到的难题之一,目前最普遍采用的防砂方法是高压挤压砾石充填防砂技术,但由于对高压挤压后的充填带形态认识不清,导致工艺技术和施工参数不甚合理。文章以离散元理论为基础,利用两维颗粒流模拟软件PFC2D,针对疏松砂岩油藏,按照胶结强度弱、中、强三种情况分别选择三口井进行数值模拟。模拟结果显示,胶结强度不同的地层在高压挤压后,其充填带形态差别较大。胶结较强的疏松砂岩地层,高压挤压后充填带的形态接近于低渗油藏,胶结弱的疏松砂岩地层,高压挤压后井眼周围岩层被压散,沿最大主应力方向地层会出现数条裂缝,按常规模型计算将带来较大的计算偏差。
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| 关 键 词： | 疏松砂岩 离散元 高压挤压充填 仿真模拟 |
Numerical Simulation of Packing Zone Morphology with High Pressure Gravel-packing Sand-prevention Technology in Unconsolidated Sandstone |
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| Institution: | WANG Wei-zhang1; YAN Xiang-zhen2(1.Weifang University; Weifang 261061; China; 2.China University of Petroleum; Dongying 257061; China); |
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| Abstract: | Sand inflow is one of the problems in unconsolidated sandstone oil reservoir recovery.The most frequently applied sandcontrol method is high-pressure gravel squeeze packing sand control technology.But incorrect knowledge of stratum shapes under high-pressure squeeze packing causes the technology and implement parameters to be unreasonable.This thesis,based on the discrete element theory and by means of two-dimension grain flow simulation software PFC2D,considers three oil wells with unconsolidated sandstone... |
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| Keywords: | unconsolidated sandstone discrete element theory high pressuresqueeze pack numerical simulation |
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