Mechanical Analysis Of Liner Hanger

With the continued exploitation and use of oil and natural gas, liner cementing technics has become one of the most commonly used methods to improve the cementing quality of the deep and special wells. Liner cementing is increasingly widely adopted with better economic and social value. Liner hanger is the critical device in the progress of implementing liner cementing technology. Liner hanger is designed and developed on the theoretical basis of its mechanical analysis in order to make it better meet the requirements of the scene.Basis of this background, in this paper, at the beginning, the development process of liner hanger technology both at home and abroad is reviewed, firstly, the technical development of the conventional liner hanger is described, and then current research status quo of the liner hanger with special functions introduces is introduced. Then the confronted challenges of the development of the liner hanger technology and key problems to be solved are pointed out, and a brief discussion on the development trend is made.Based on a full grasp of the classification, structure, principle and the performance requirements of the liner hanger by the scene, mechanical analysis and strength check of slip are made by useing mathematical tools for suspension parts of the casing hanger, hanger body, and a simplified mathematical model is established. Then the correctness of the mathematical model is verified by means of the alculation results of the scene examples. Calculates the size of the slip and estimate whether it is reasonable to achieve the purpose that theory guides practice. At the same time, an important theoretical guidance for the development, improvement and innovation of the liner hanger is provided.At last, the numerical calculation and analysis are made on liner hanger by the finite element methods: first, draw via UG software and build physical models; then, make a analysis by ANSYS software to get a series of important results of slip, suspension parts of the casing hanger and hanger body three under the external force. The reasonable size of the slip is obtained through the finite element analysis of value under different parameters, and it provides important calculated values for verifying the correctness of the mathematical model.