According to the working principle and structural feature of compressive packer, mechanic analysis of rubber tubes was done with adopting Mooney-Rivlin model. The contact stress between rubber tube and the casing and axial compression distance were figured out at 83MPa of the differential pressure between inside and outside string. The results show that the middle tube has the function of beginning to set the paker and the lower tube seals and separate the layers. Upper tubing should be installed the equipment to prevent shoulder protruding.
Submersible electric pump units are connected by bolts. This paper uses finite element analysis method to simulate how the pump joint bolt behave when it transmit torque.In this paper, temperature method is adopted to simulate the bolt preload and axial deformation.It also used to analyse and calculate the limited value when submersible electric pump units transmit torque under different preload. All of this provide the designing of connecting bolt preload and construction with theoretical basis.
Analyzes that the ammonia plant of a fertilizer between rich liquid line and ammonia synthesis tower of pressure pipeline vibrates some reasons, through the establishment of the pipeline and tower body vibration finite element model, the calculation of the existing constraints stress, vibration frequency and vibration form. By adding a support level and put forward the reconstruction plan of vibration reduction. Through many calculation and analysis, the weld seams stress reduced by 23.6%, the maximum amplitude dropped 98.5% and obtain the better vibration reduction transformation effect.
The identification and classification of petroliferous unit is the key to the success in the exploration for oil-gas
fields with geophysical knowledge that are the main means and ways to reduce exploration risk and improve exploration
efficiency. In this paper, it analyzes geophysical response characteristics under conditions of gas, oil and water through
the establishment of horizontal layered medium model. Then it extracts and analyzes seismic abnormal characteristics of
the data structure combining the method of grey system theory based on the experiment, which are considered as an important
reference for further objectively identifying petroliferous unit and the exploration of oil-gas fields in the practical
application with comparison and analysis.
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