超深井石油鉆機井架起升過程動態(tài)特性分析

1、華中科技大學碩士學位論文超深井石油鉆機井架起升過程動態(tài)特性分析姓名：朱襟成申請學位級別：碩士專業(yè)：機械電子工程指導教師：陳學東20080529II 華 中 科 技 大 學 碩 士 學 位 論 文華 中 科 技 大 學 碩 士 學 位 論 文Abstract Ultra-deep drilling rig is a new kind of drilling rig, which is developed for drilling oil

2、and gas in deep stratum. It is becoming increasingly important in the oil production industry. Derrick is the main supporting parts of ultra-deep drilling rig. It bears much static and dynamic load under different condit

3、ions. So there are high requirements for design and performance of derrick. The raising process is one of the most dangerous conditions for derrick. In order to ensure safety of installation, the dynamic characteristics

4、of derrick raising mechanism must be analyzed, and raising method must be also evaluated. This work is great significant for developing ultra-deep drilling rig After analyzing the components and working principle of rai

5、sing mechanism, a mathematical relationship between pulling of fast line and raising angle is deduced based on the geometric relation and balance principle of moment. This relationship is established when ignoring the ef

6、fect of dynamic load. According to the two-dimensional curve of that relation, the change trend of raising force that firstly increase and then descend with the increasing of raising angle is shown. A geometrical model a

7、nd dynamic ones of derrick raising mechanism are established using Pro/E and ADAMS respectively. Three-dimensional entity model of derrick raising mechanism without cable is built by Pro/E, and then the geometrical model

8、 is created using ADAMS. Considering the main characteristics of cable and feasibility of solving model, a improved simplification method is proposed and a dynamic model of the cable-pulley system is established by this

9、method. Then, a virtual prototype of derrick raising mechanism is created. After simulating the raising process based on the virtual prototype, the dynamic characteristics of raising process could be obtained from the re

10、sults. Firstly, the impact of different hoisting rotate speed on raising process is shown by comparison of derrick’s raising velocity and acceleration under different hoisting inputs. Severe vibration happens when hoisti

11、ng stop abruptly. Secondly, position of maximum stress on derrick is got by analyzing forces on fast line, hoisting cable, hook, and critical position on derrick. Finally, normal mode analysis of raising mechanism is acc