【摘 要】
：
The series connection of multistage pumping module is the common concept of deepwater riserless mud recovery drilling system. In this system, the influence of t
论文部分内容阅读
The series connection of multistage pumping module is the common concept of deepwater riserless mud recovery drilling system. In this system, the influence of the mass of pumping module on the vibration of mud recovery line cannot be ignored, and the lumped mass method has been utilized to discretize the mud recovery line. Based on the analysis of different boundary conditions, the paper establishes the axial forced vibration model of the mud recovery line considering the seawater damping, and the vibration model analysis provides the universal solution to the vibration model. An example of the two-stage pumping system has been used to analyze the dynamic response of mud recovery line under different excited frequencies. This paper has the important directive significance for the application of riserless mud recovery drilling technology in deepwater surface drilling.
其他文献
采用分离式霍普金森压杆(SHPB)对真空熔炼制备的Mg-Li合金进行了静、动态试验研究,试件的加载应变率范围为1.7×10-3～1026s-1,得到了材料在不同应变率下的应力-应变曲线。并根
通过高温应力松弛实验对BT20钛合金在700～850℃,不同初应力条件下短时应力松弛行为进行研究.结果表明:随着温度升高,BT20钛合金应力松弛速率加快,但长时间应力松弛后剩余应力
通过拉伸试验研究了GH690合金从298～623K的变形行为,用光学显微镜、扫描电镜和透射电镜观察了变形组织。结果表明,合金在298K拉伸时能够通过孪生协调变形,生成的形变孪晶阻碍
在不同温度的CO2气氛中对Pd膜进行了毒化,将毒化后的Pd膜与氢气反应并测试其氢同位素渗透性能.采用XPS、SEM等检测了CO2在不同温度下对Pd膜毒化后的表面成分与形貌,并对比分
采用真空感应熔炼炉制备NiTi合金,并对重熔后的合金进行不同制度热处理.研究NiTi形状记忆合金边角料重熔合金不同温度时效后的室温拉伸力学性能.结果表明,NiTi形状记忆合金边
采用热分解法制备Ti/Sb-SnO2电极和Ti/Sb-SnO2/Ce电极,采用扫描电子显微镜(SEM)、X射线衍射(XRD)仪和电化学实验技术对电极的表面形貌、物相组成和电化学性能进行表征.结果表
研究了稀土金属Gd的纯度对Gd52.5Co18.5Al29非晶合金的玻璃形成能力和磁热效应的影响.研究表明Gd的纯度从99.94%下降到99.2%,非晶合金的临界直径从4mm减小到3mm:磁热效应并未
采用等辊径、等辊速冷轧复合技术制备了AgNi10/Cu/Fe三层复合材料,对其界面结合机制进行了研究。复合前对三层材料分别进行再结晶退火,获得均匀的原始组织及相近的硬度,并用
用高精度非原位XRD结合Rietveld精修对正交Li1-xMnO2(简写为o-Li1-xMnO2,0≤x≤0.95)在首次充电(电化学脱锂)过程中物相及结构的演变进行了研究.结果表明,o-LiMnO2电极的电压
以甲醛为还原剂,采用银氨液滴入还原液的镀液加入方式进行化学镀银法制备导电滑石粉,对滑石粉化学镀银条件进行了研究.探讨了银氨液pH值、硝酸银浓度、甲醛浓度、粉体装载量