旋转导向钻井系统电路仓结构设计及优化

发布时间：2018-02-27 16:04

本文关键词： 旋转导向钻井井下偏置机构电路仓有限元优化设计　出处：《重庆大学》2015年硕士论文　论文类型：学位论文

【摘要】：旋转导向钻井技术实现了钻采过程中的轨迹定向控制,已成为油气开发钻井过程中定向钻井的主要和先进技术,代表着定向钻井技术发展的主流方向。由于井下空间狭窄,并且充满高温、高压的泥浆,为了充分利用空间,现用旋转导向钻井系统井下偏置机构的电路仓主要采用分体式结构。该结构电缆布置、连接复杂,加工、装配工艺繁琐,降低了系统密封的可靠性。本文提出了一种用于井下偏置器的整体式电路仓结构。首先采用传统设计方法,从设计输入出发,通过电路仓区域相关零件旋转芯轴的设计,过渡到整体式电路仓的结构设计。之后采用CAE(Computer Aided Engineering)方法,对整体式电路仓结构展开了优化设计。在概念阶段,采用拓扑优化方法,计算出优化的整体式电路仓初始模型。并在此基础上展开详细设计,采用了形状优化方法,将整体式电路仓的各单安装腔体向其局部中心逼近,得到了整体式电路仓在设计空间内满足应力条件下所能达到的最大安装腔体。随后再次对整体式电路仓的细节尺寸进行比对优选,并采用实际接触模型进行优选,设计出满足本次安装要求,同时结构强度最优的整体式电路仓主体结构。最后,将优化设计后的整体式电路仓主体结构与原设计进行对比验证,并从实际使用出发,对整体式电路仓抗压筒、基座之间的接触强度进行了详细分析,验证了整体式电路仓的结构强度。本文应用现代设计方法设计出了强度可靠的整体式电路仓,解决了旋转导向钻井系统的研制的关键技术问题。同时,本文方法也可作为石油钻井装备类似结构设计优化的参考。
[Abstract]:The rotary steering drilling technology has realized the directional trajectory control in drilling and production process, which has become the main and advanced technology of directional drilling in the process of oil and gas development and drilling, which represents the mainstream direction of directional drilling technology. And filled with high temperature and high pressure mud, in order to make full use of the space, the circuit bin of the downhole bias mechanism used in rotary steering drilling system mainly adopts the split structure. The cable arrangement of this structure is complicated, the connection is complicated, the processing and assembly technology is cumbersome, The reliability of the system seal is reduced. In this paper, an integral circuit bin structure for downhole bias device is proposed. Firstly, the traditional design method is used to design the rotating core shaft of the relevant parts in the area of the circuit bin, starting from the design input. After the structural design of the integrated circuit bin is carried out by using CAE(Computer Aided engineering method, the structural optimization of the integrated circuit bin is carried out. In the conceptual stage, the topology optimization method is adopted. The initial model of the optimized integrated circuit bunker is calculated. Based on this, the detailed design is carried out, and the shape optimization method is adopted to approach the local center of the single-mounted cavity of the integrated circuit bin. The maximum installation chamber can be achieved in the design space under the condition of satisfying the stress. Then, the detail size of the integrated circuit bin is compared and optimized again, and the actual contact model is used to optimize the selection. The main structure of the integrated circuit warehouse is designed to meet the requirements of this installation and the structural strength is optimal. Finally, the main structure of the integrated circuit bin after the optimization design is compared with the original design, and from the practical use, the main structure of the integrated circuit bin is compared with that of the original design. The contact strength between the anti-pressure cylinder and the base of the integral circuit bin is analyzed in detail, and the structural strength of the integral circuit bin is verified. In this paper, the integrated circuit bin with reliable strength is designed by using the modern design method. The key technical problems in the development of rotary steering drilling system are solved. At the same time, this method can also be used as a reference for similar structural design optimization of petroleum drilling equipment.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE92

【相似文献】