Method for predicting erosion deformation and service life of thickened oil thermal recovery wellhead device

• Main Authors: YAN HONGJUAN, LI BOLUN, DONG FANG, ZHOU JIANPING, WANG TIANRONG, PENG HUI, QIU FUSHOU, WANG HONG, FU DENGWEI, WANG HAITAO, LIU CENFAN, GONG ZHAOBO
• Format: Patent
• Language: Chinese; English
• Published: 07.03.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ELECTRIC DIGITAL DATA PROCESSING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PHYSICS

The invention relates to the technical field of safety evaluation of heavy oil thermal recovery wells, in particular to a method for predicting erosion deformation and service life of a heavy oil thermal recovery wellhead device. The prediction method comprises the following steps: (1) collecting simulated scouring experiment data; (2) drawing an erosion change curve between the erosion rate and the dependent variable of the erosion mass loss, and determining the erosion damage critical speed; (3) determining an erosion rate formula; (4) a fluid mechanics simulation experiment is calculated, and erosion reduction distribution under different oil extraction conditions is obtained; (5) carrying capacity judgment; and (6) obtaining final erosion deformation and predicted service life. The method has the advantages of rapidness and accuracy. 本发明涉及稠油热采井安全评价技术领域，具体涉及一种稠油热采井口装置的冲蚀变形与使用寿命预测方法。所述预测方法包括以下步骤：(1)采集模拟冲刷实验数据；(2)绘制冲蚀速率与冲蚀质量损失的因变量之间的冲蚀变化曲线，确定冲蚀破坏临界速度；(3)确定冲蚀速率公式；(4)计算流体力学仿真实验，获取不同采油条件下的冲蚀减薄量分布；(5)承载能力判断；(6)获