基于响应面法的新型控压钻井节流阀优化设计  

Optimization Design for a New Type Throttle Valve of Managed Pressure Drilling Based on Response Surface Methodology

作　　者：王国荣[1] 楚飞[1] 范红康[2] 陶思宇[1] 朱颢 蒋龙[1] 

机构地区：[1]西南石油大学机电工程学院,成都610500 [2]中国石化石油工程技术研究院,北京100101 [3]中石化石油工程机械有限公司,武汉430205

出　　处：《系统仿真学报》2015年第5期1133-1137,共5页Journal of System Simulation

基　　金：国家油气重大专项(2011ZX05048-04HZ)

摘　　要：运用CFX和ANSYS Design Exploration,采用中心组合法和响应面法计算了新型控压钻井节流阀阀盖长度、阀盖外径、阀腔内径单一参数和双参数关于阀芯平均质量损失的克里金响应面,结果表明这些尺寸对阀芯的平均质量损失影响显著。为增强阀芯耐冲蚀性,提高节流阀使用寿命,采用多目标遗传算法对上述尺寸进行了优化。优化后阀芯的平均质量损失减弱30.2%,阀芯对称面轮廓线上各点随x坐标冲蚀率的变化表明大部分点冲蚀率有明显减弱,阀芯背部冲蚀率减弱最显著。The Kriging response surface of single parameter and double parameters versus mass loss of valve spool about bonnet length, bonnet external radius and chamber inner radius of a new type throttle valve used in Managed Pressure Drilling was carried out by using CFX and ANSYS-Design Exploration. The results show that these dimensions have significant influence on erosion mass loss of valve spool. In order to improve the anti-erosion ability of the spool and enhance the service life of the whole valve, the multi-objective genetic algorithm was used for dimensional optimization design of the mentioned variables. After optimization design, the averaged erosion mass loss of plug was decreased 30.2% than that in original chamber dimensions. The detail analysis of spool contour in symmetry plane indicates the erosion rate of majority points on the contour are decreased obviously, and especially significant at the back side of the spool.

关 键 词：控压钻井节流阀 阀芯冲蚀 响应面法 优化设计 计算流体力学 

分 类 号：TE92[石油与天然气工程—石油机械设备]