A shock-absorbing treatment method and device for an intubation packer
A processing method and packer technology, applied in special data processing applications, geometric CAD, design optimization/simulation, etc., can solve problems such as unsuitable intubation packer shock absorption, etc., to achieve a wide range of applications, increase Shock-absorbing effect and safety-enhancing effect
Active Publication Date: 2020-06-19
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology
In the prior art, the research on shock absorption in perforating operations is mainly aimed at fixed packers, and is not suitable for shock absorption of intubated packers
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[0054] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0055] figure 1 It is a structural schematic diagram of the wellbore when no shock absorber is installed in one embodiment of the present application, figure 2 It is a schematic diagram of the structure of the wellbore after the shock absorber is set in one embodiment of the present application, such as figure 1 , figure 2 As shown, ...
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The application provides a shock-absorption processing method and shock-absorption processing devices used for a plug-tube-type packer. The method includes: acquiring perforation parameters and bottomhole peak-pressure corresponding to a perforation moment; utilizing the perforation parameters and the bottom hole peak-pressure to calculate a first upward-movement distance of a plug tube of the plug-tube-type packer in perforation; according to the first upward-movement distance, the perforation parameters and the bottom hole peak-pressure, judging whether the plug-tube-type packer is in a safe state in perforation, and if not, arranging shock absorbers at an oil tube of a perforation section, and calculating a second upward-movement distance; and re-judging whether the plug-tube-type packer is in the safe state in perforation, and if not, adjusting positions and / or the number of the shock absorbers and recalculating the second upward-movement distance until it is judged that the plug-tube-type packer is in the safe state in perforation. By utilizing all the embodiment in the application, a shock-absorption design of the plug-tube-type packer is realized, and safety of the plug-tube-type packer in perforation operating is improved.
Description
technical field [0001] The application belongs to the technical field of oil and gas well engineering, and in particular relates to a shock-absorbing treatment method and device for an intubation packer. Background technique [0002] In the prior art, in the process of oil and gas exploitation, the perforation technology can usually be used to fracturing the reservoir, so as to facilitate the seepage of oil and gas in the reservoir and realize the oil and gas exploitation. [0003] During the perforating operation, the perforating gun shoots through the formation, and at the same time, generates a large amount of energy in a very small space, which is transmitted to the perforating string above the shock absorber through the shock absorber, and Extreme shock loads are generated at the packer, resulting in deformation and axial vibration of the perforating string. The dynamic force generated by this kind of vibration may cause the instrument above the packer to be vibrated, ...
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IPC IPC(8): G06F30/20G06F30/17
CPCG06F30/17G06F30/20
Inventor 张辉李军董健邓桥
Owner CHINA UNIV OF PETROLEUM (BEIJING)