【作者】 祁万军；

【导师】 徐依吉；

【作者基本信息】 中国石油大学 ， 油气井工程， 2008， 硕士

【摘要】 分析国内外井下增压技术，我们发现目前大多数井下增压装置内部都具有复杂的液压转换机构以及复杂的流道。由于井下的空间小、工况条件恶劣，现有的装置不但寿命短、工作可靠性差，而且加工也比较困难，这些制约了超高压射流钻井技术的发展。要成功地实现超高压的射流技术，就必须研制出新的适应性强的井下增压系统。本文抛弃了原有增压装置的设计理念，利用现有的比较成熟的螺杆钻具技术，设计了一种新型的、以螺杆钻具为动力源的斜盘式增压装置，来满足不断发展的超高压射流钻井技术。该增压装置是利用螺杆钻具将钻井液的水力能转换为机械能，来带动增压装置，实现对井下部分钻井液的增压。本文在系统阐述了动力源—螺杆钻具的结构及其工作特性的基础上，分析了螺杆钻具的实际工作特性及对其部分结构进行改进的可行性。研究内容主要包括：斜盘式增压装置整体的结构设计，并完成此装置的零件及整体装配图纸的绘制；确定装置的关键参数；对该增压装置重要零件进行强度校核；用Pro/ENGINEER软件对增压装置零件及整体结构做出三维立体图形，在此基础上对实现了装置的结构分析和运动仿真。该斜盘式增压装置的设计，对今后超高压射流技术的发展具有重要的指导意义。更多还原

【Abstract】 Through the analysis of technology on downhole supercharging at home and abroad, wefind that complicated hydraulic conversion mechanisms and flow channels are included inmost of downhole supercharges. The development of ultra-high pressure jet drilling isrestricted in consideration of the problems of short life, poor reliability and difficultprocessing of the present down-hole supercharges that are worked under the limited workingspace and poor working conditions. For the successful application of ultra-high pressure jetdrilling technology, the new downhole supercharges with strong adaptabi lity must bedeveloped.A new swashplate type supercharge, to meet to the increasing development of ultra-highpressure jet drilling technology is designed in the paper. Screw drill is the dynamic source ofthe supercharge which is designed at the base of the existing relatively mature technology ofscrew drill. The supercharging installation is driven by mechanical energy converted fromwater energy through screw drill. So increasing of pressure of drill fluid is received.The structure and operating performance of screw drill, which is the source of power, aredetailedly expatiated in the paper. The real operating performance and feasibility of structureimprovement about screw drill are studied in the article. The research is about several parts:the structural design and completing the parts and assembly drawings of swashplate typesupercharge; determin the key parameters of the device; strength check on the important partsof swashplate type supercharge; 3D graphics of parts and overall structure are mad e by usingPro/ ENGINEER software. The structural analysis and motion emulation of the swashplatetype supercharge are achieved at the base.The design of swashplate type supercharge will have an important guiding significanceto the development of ultra-high pressure jet technology in the future .更多还原