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Salt cavern hydrogen storage well annulus protection liquid and preparation method thereof

An annulus protection fluid and hydrogen storage technology, applied in chemical instruments and methods, earthwork drilling, boreholes/well components, etc., can solve problems such as casings and packers being easily corroded, to avoid thermal deformation, Good thermal stability, anti-aging effect

Inactive Publication Date: 2021-11-02
CHINASALT JINTAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the technical problem that the casing and packer are easily corroded in the process of hydrogen storage in salt caverns in the prior art, the present invention provides a kind of annular protection fluid for hydrogen storage wells in salt caverns and Its preparation method is that the annular space protection fluid is filled in the fluid between the injection-production casing and the production casing to reduce the pressure of the gas reservoir on the casing head or the packer, reduce the pressure difference between the tubing and the annular space, and suppress the casing pressure. Tube corrosion and bacterial growth can absorb / release part of the heat during injection and production, thereby increasing the service life of production casings and packers

Method used

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  • Salt cavern hydrogen storage well annulus protection liquid and preparation method thereof
  • Salt cavern hydrogen storage well annulus protection liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Combining figure 1 , each raw material is weighed by the following percentage by weight: sodium acetate 15%, sodium carbonate 2.3%, kanamycin 1.0%, WO 3 And palladium acetate 0.1%, zinc dihydrogen phosphate and disodium silicate nonahydrate 0.5%, dimethyl ketoxime 0.5%, WO 3 The mass ratio with palladium acetate is 60:1;

[0028] S2, add a certain amount of deionized water in the reactor;

[0029] S3, feed nitrogen into the deionized water, bubbling, get rid of the oxygen dissolved in the water;

[0030] S4, sequentially add sodium acetate, sodium carbonate, kanamycin, WO to the solution obtained in step S3 3 and palladium acetate, zinc dihydrogen phosphate, disodium silicate nonahydrate, and dimethyl ketone oxime, and stir evenly until all the solids are dissolved to obtain an annulus protection solution suitable for salt cavern hydrogen storage wells with a density of 1.01 g / cm 3 ring protection fluid.

[0031] Using N80 and P110 steel to test the pro...

Embodiment 2

[0032] Example 2: Combining figure 1 , take each raw material according to the following percentage by weight: sodium acetate 40%, sodium carbonate 8.0%, kanamycin 4.0%, WO 3 And palladium acetate 1.0%, zinc dihydrogen phosphate and disodium silicate nonahydrate 2.0%, dimethyl ketoxime 6.0%, WO 3 The mass ratio with palladium acetate is 60:1;

[0033] S2, add a certain amount of deionized water in the reactor;

[0034] S3, feed nitrogen into the deionized water, bubbling, get rid of the oxygen dissolved in the water;

[0035] S4, sequentially add sodium acetate, sodium carbonate, kanamycin, WO to the solution obtained in step S3 3 And palladium acetate, zinc dihydrogen phosphate, disodium silicate nonahydrate and dimethyl ketoxime, stir well until the solids are all dissolved, and the obtained density is 1.07g / cm 3 ring protection fluid.

[0036] Using N80 and P110 steel to test the properties of the prepared annular protection solution, the properties of the annular prot...

Embodiment 3

[0037] Example 3: Binding figure 1 , the environmental control protection solution is prepared through the following steps:

[0038] S1, each raw material is weighed according to the following percentage by weight: sodium acetate 32%, sodium carbonate 3.3%, kanamycin 1.0%, WO 3 And palladium acetate 0.5%, zinc dihydrogen phosphate and disodium silicate nonahydrate 1%, dimethyl ketoxime 0.5%, WO 3 The mass ratio with palladium acetate is 60:1;

[0039] S2, add a certain amount of deionized water in the reactor;

[0040] S3, feed nitrogen into the deionized water, bubbling, get rid of the oxygen dissolved in the water;

[0041] S4, sequentially add sodium acetate, sodium carbonate, kanamycin WO to the solution obtained in step S3 3And palladium acetate, zinc dihydrogen phosphate, disodium silicate nonahydrate and dimethyl ketoxime, stir well until the solids are all dissolved, and the obtained density is 1.03g / cm 3 ring protection fluid.

[0042] Using N80 and P110 steel t...

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Abstract

The invention relates to the technical field of hydrogen energy utilization, in particular to a salt cavern hydrogen storage well annulus protection liquid which comprises the following components in percentage by mass: 15-40% of organic salt, 2.3-8.0% of a pH regulator, 1.0-4.0% of a bactericide, 0.1-1% of a hydrogen indicator, 0.5-2% of a gas well corrosion inhibitor, 0.5-6.0% of a deoxidant and the balance of water. The gas reservoir pressure borne by a casing head or a packer can be reduced, the pressure difference between an oil pipe and an annulus is reduced, corrosion of a casing and growth of bacteria are inhibited, part of heat in the injection and production process can be absorbed / released, and therefore the service life of the production casing and the service life of the packer are prolonged. And when a trace amount of hydrogen leaks from the salt cavern, the color of the protection liquid becomes blue, so that preventive measures can be taken in advance, and the safety of hydrogen storage is ensured.

Description

technical field [0001] The invention relates to the technical field of hydrogen energy utilization, in particular to a salt cavern hydrogen storage well annulus protection fluid and a preparation method thereof. Background technique [0002] The underground storage of hydrogen has been continuously explored and researched by various countries. In the early stage, artificial gas was mixed with methane at a ratio of 50-60% and injected into underground storage. In the later stage, pure hydrogen (95% hydrogen plus 3%-4 % of carbon dioxide), among them, France, Germany, the United Kingdom, the United States and other European and American countries have more research and practice on hydrogen underground storage, while my country has relatively little research in this area. At present, in order to cope with the energy crisis, countries are actively implementing the energy strategic reserve strategy. The underground salt cavern reserve is the most important part of the energy strat...

Claims

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Application Information

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IPC IPC(8): C09K8/40C09K8/54
CPCC09K8/40C09K8/54C09K2208/32
Inventor 徐俊辉陈留平刘娟赵云松徐孜俊王卫东
Owner CHINASALT JINTAN
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