A method for forming an irregular salt cavern gas storage
An irregular, gas storage technology, applied in the direction of earth drilling, mining equipment, mining equipment, etc., can solve the problems of waste of underground space, insufficient stability, and difficulty in using natural gas reserves
Active Publication Date: 2021-11-12
湖北寰安康华安全科技发展有限责任公司 +1
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Problems solved by technology
For salt caverns with irregular shapes, it is difficult to use them for natural gas storage due to their insufficient stability.
However, the mining of salt mines in my country has produced a large number of irregular salt caverns with large volumes. If they cannot be utilized, the underground space will be wasted.
Method used
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Embodiment
[0083] A method for forming an irregular salt cavern gas storage, comprising the following steps:
[0084] S1. Use "Key Technology 1", put in vertical support rod I 4, vertical support rod II 5, vertical support rod III 6, vertical support rod IV 7 and horizontal support rod I 8, The order can be arbitrary, such as Figure 8 shown;
[0085] S2. Pouring foam concrete to one-third of the salt cavern volume, after pouring into shape, continue to put in the vertical support bar V 9 and the horizontal support bar II 10, such as Figure 9 shown;
[0086] S3. Continue pouring concrete to two-thirds of the volume of the salt cavern, place horizontal and vertical support rods III11 and horizontal and vertical support rods IV 12 after pouring is formed, such as Figure 10 shown;
[0087] S4. Continue pouring to the top of the cavity, such as Figure 11 shown.
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The invention belongs to the field of petroleum and natural gas reserves, and in particular relates to a method for forming an irregular salt cavern gas storage, comprising the following steps: placing support rods in irregular salt caverns; filling foam concrete in the salt caverns; filling the salt caverns with Inject gas into the hole. The basic principle of the present invention is to put several support rods into the irregular salt caverns, and fill the salt caverns with materials full of voids inside, so as to restrain the volume shrinkage of the salt cavern gas storage. Compared with the prior art, the present invention has no backing gas; it is suitable for (abandoned) salt caverns of any shape, especially some salt caverns with irregular shapes that are difficult to be used as salt cavern gas storage directly and the situation of several salt caverns being connected ; The salt cavern gas storage formed by the method is very stable.
Description
technical field [0001] The invention belongs to the field of petroleum and natural gas storage, and in particular relates to a method for forming an irregular salt cavern gas storage. Background technique [0002] Due to the low permeability, creep and damage self-recovery characteristics of salt rock, the use of salt caverns to carry out underground natural gas storage is one of the main methods of natural gas storage in the world. Since the beginning of the 21st century, my country has gradually selected places such as Jintan in Jiangsu, Qianjiang in Hubei, and Pingdingshan in Henan to carry out the construction of salt cavern gas storage. Generally speaking, salt caverns with relatively regular shapes are selected for natural gas storage. For salt caverns with irregular shapes, it is difficult to use them for natural gas storage due to their insufficient stability. However, the mining of salt mines in my country has produced a large number of irregular salt caverns with ...
Claims
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IPC IPC(8): E21F17/16
CPCE21F17/16
Inventor 张明马洪岭
Owner 湖北寰安康华安全科技发展有限责任公司