Snubbing Swimming Kava Design Analysis

Most of the Oil fields in China has entered into the late exploitation, increasing the number of producing wells,but the Oil equivalent remains stagnant.The crude Oil import dependency will present more than 50% in our county.However, China is also rich in oil and gas resources,there the old Oil and Gas is still under the potential development,the traditional snubbing oil and gas resources is not conducive to sustainable development,which need to use a new underground work practices to deal with them,try to maintain the reservoir pressure,to protect the underground oil and gas resources,to increase exploitation of production yield.It comes into being that the snubbing technology which can meet the requirements well.Swimming Slip is the key components of the snubbing rise and down system,its quality is direct impact not only on snubbing technology, reducing accidents,but also greatly improving its efficiency and reducing costs.The technology and equipment of snubbing in foreign are relatively mature,the utilization rate is more than 80% in the United States and Canada. Snubbing technology starts late in our county, because of the poorly equipment and reliability, the technology is less used in our country oil fields.In view of this, the author carried out to design on the snubbing of key parts of equipment,to design and calculation on swimming slips,and to optimize and analysis. The details are as follows:(1) To make a detailed description on snubbing technology, and to show the working principle and applications of snubbing, to make a brief introduction on equipment and device type, and to predict the future development of snubbing.(2)Based on the research at home and abroad, with the slips on the field of structural analysis, for the specific circumstances of the hydraulic oil swimming slip structural to design and analysis.(3)To analysis the technical process of snubbing, to design and calculate the column which work in under the static,to analysis the column in stress and column position of equilibrium,so,it is convenient to design evaluation and control the process of operation in several risk conduct possibly(4)To make a detailed calculation to the key parts of the swimming slips, the author has determined the geometric and the mechanical model, and made a detailed design and calculations on the body slips, slip seat, slip tooth shape and the tooth spacing, finally determined the best value range.(5)Geometrical model was established,by using the ANSYS to analysis the geometrical model structural,and I have got the optimal swimming teeth slip parameters,eventually the author have got the optimal design of Slips teeth by optimizing the parameters of the slip teeth.The forms of failure in traveling slips is the teeth wear and fracture, the slip teeth wear and damage accounted for the vast majority, so it is a great significance to optimize the slip teeth to the technique snubbing, which to pave a way to promote the use of snubbing as soon as can be done, it is also to provide a theoretical basis for the improvement and upgrading of the snubbing technology...