高温复合射孔实验釜体热-冲击耦合试验数值模拟

Numerical Simulation of Thermal Shock Coupling Tests for High-temperature Composite Perforating Experimental Equipment

用数值模拟技术分析高温条件下内置式复合射孔器单元在试验釜体上形成的载荷。在石油工业油气田射孔器材质量监督检验中心室内测试的复合射孔器单元试验釜体基础上加载了190℃高温条件,并进行爆炸冲击的流固耦合数值模拟计算。高温条件会增加结构的内应力,降低釜体结构承载能力。设计制造了能够提供高温条件下复合射孔器单元试验釜体,对某型超高温复合射孔器产品进行了室温条件下、高温条件下(180℃、150h)对比试验,峰值压力降低11.1%,大于等于30 MPa的待续时间下降9.8%,为现场使用的高温复合射孔器的检验和评价奠定了基础。

In this paper loads on experimental equipment,which were formed by built-in composite perforating units under the condition of high temperature,were analyzed by numerical simulation technology.The specific process is as follows:Firstly,the composite perforating unit experimental equipment used for lab experiments was heated up to 190℃in Perforators Inspection Center of PetroChina,and then the fluid-solid coupling numerical simulation calculation of blasting shock was carried out.The results showed that the internal stress of the structure increased and the structure loading capacity of the equipment decreased under the condition of high temperature.On the basis of the results,the composite perforating unit experimental equipment that can be used under the condition of high temperature was designed and manufactured.With the help of this new equipment,the contrast tests of a certain type of high temperature composite perforating unit were carried out under the room temperature and high temperature(180℃and 150 h).It is found that the peak pressure decreased 11.1%and the duration time decreased 9.8%under the condition of pressure no less than 30 MPa,which lay the foundation for inspection and evaluation of high temperature composite perforators used in oil field.