Method and device for determining shrinkage data of injection-production string
A technology for injection and production of pipe strings and data, which is applied in the fields of electrical digital data processing, special data processing applications, earthwork drilling and mining, etc. and other problems to achieve accurate and effective data support and ensure the effect of normal operation
Pending Publication Date: 2022-02-22
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI +1
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Problems solved by technology
[0004] In the research process of the existing related technologies, the inventors found that the diameter of the "naked hole section" gradually decreases with the increase of the cumulative working time, and this will obviously affect the salt cavern gas storage If the gas injection and production efficiency is too high, it may seriously affect the normal operation of the salt cavern gas storage
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[0065] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.
[0066] The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprisin...
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The invention provides a method and a device for determining shrinkage data of an injection-production string. The method and the device are used for accurately analyzing the shrinkage data of an open hole section of the injection-production string of a salt-cavern gas storage. The method comprises the steps: acquiring the initial diameter of a target tubular column and creep deformation data of a salt layer where the target tubular column is located,the target tubular column being a tubular column part composed of a salt layer stratum structure in an injection-production tubular column of the salt cavern gas storage; inputting the initial diameter and the creep data as input data into a theoretical calculation model to enable the model to calculate first shrinkage data of the target tubular column; acquiring the salt rock stratum burial depth, the salt rock stratum thickness and rock mechanics data of the salt stratum where the target pipe column is located; inputting the initial diameter, the salt rock stratum burial depth, the salt rock stratum thickness and rock mechanics data as input data into a numerical simulation model, and enabling the model to calculate second shrinkage data of the target tubular column; and in combination with the first shrinkage data and the second shrinkage data, determining target shrinkage data of the target tubular column, and outputting the target shrinkage data.
Description
technical field [0001] The present application relates to the geological field, in particular to a method and device for determining shrinkage data of an injection-production string. Background technique [0002] During the operation of the salt-cavern gas storage, because the gas pressure in the cavity is lower than the in-situ stress of the formation, the salt rock layer will continue to creep and shrink under the deviatoric stress, and the top of the salt cavity will sink and produce tensile stress. [0003] During the operation of the salt cavern gas storage, it is necessary to realize the connection between the ground pipeline and the underground salt cavern through the injection and production string. A certain length of "open-hole section" needs to be reserved at the top, that is, a section of the injection-production string is a metal pipe string, and a section of the pipe string directly hollowed out from the salt formation is connected to the metal pipe string. Th...
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IPC IPC(8): G06F30/20E21B47/00G06F111/10G06F119/14
CPCG06F30/20E21B47/00G06F2111/10G06F2119/14
Inventor 赵凯李银平马洪岭侯秉仁于长富刘元玺李志强冯畅刘浩林施锡林李朋董志凯赵月悦杨春和
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI