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Rapid combustible ice supercooling nano liquefier and method for exploiting combustible ice with same

A mining method and liquefaction agent technology, applied in chemical instruments and methods, mining fluids, earth drilling and mining, etc., can solve problems such as stratum collapse and geological disasters, and achieve fast liquefaction speed, high flash point, and large permeability increase Effect

Pending Publication Date: 2019-12-03
CHENGDU NENGSHENGCAI SCI & TECH DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of combustible ice was mined, and the excessive shortage of the formation caused large-scale collapse and serious geological disasters

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 of the present invention discloses a combustible ice rapid supercooling nano-liquefaction agent SCD1, and the adopted technical scheme is as follows:

[0039] A combustible ice rapid supercooling nano liquefaction agent SCD1 is composed of the following components by weight percent: 10% ammonium bifluoride, 5% propionic acid, 5% penetrant fast T, 8% penetrant JF, 12% Butyl acetate, 5% diethyl phthalate, 5% diethyl oxalate, 5% diethyl propionate, 5% diethylene glycol butyl ether, 5% N-methylpyrrolidone, 5% propylene glycol methyl ether, 5% n-butanol, 5% propylene carbonate, 5% ethylene glycol ether acetate and 15% formaldehyde. The penetrant fast T is sodium di-sec-octyl maleate sulfonate; the penetrant JF is polyoxyethylene fatty alcohol ether JFC, and its chemical structure is C 17～19 h 21 o 6 (n=5).

[0040] Example 1 of the present invention is used for the liquefaction of combustible ice in sandstone mainly composed of quartz, and realizes rapid sup...

Embodiment 2

[0042] Embodiment 2 of the present invention discloses a combustible ice rapid supercooling nano-liquefaction agent SCD2, and the adopted technical scheme is as follows:

[0043] A combustible ice rapid supercooling nano liquefaction agent SCD2 is composed of the following components in terms of mass percentage: 22% penetrant fast T, 16% diethylene glycol acetate, 16% isoamyl acetate, 12% di Ethylene glycol dimethyl ether, 5% propylene carbonate, 8% diethylene glycol, 8% butyl acetate, 8% ethyl benzoate, 3% ethyl acetoacetate, and 2% diethyl phthalate. Penetrant Fast T is sodium di-sec-octyl maleate sulfonate.

[0044] Example 2 of the present invention is suitable for the liquefaction process of combustible ice in quartz sandstone with sodium bentonite as the filling and cement as the main material, and realizes rapid supercooled liquefaction with a freezing point of -60 to -10°C.

Embodiment 3

[0046] Embodiment 3 of the present invention discloses a combustible ice rapid supercooling nano-liquefaction agent SCD3, and the adopted technical scheme is as follows:

[0047] A combustible ice rapid supercooling nano-liquefaction agent SCD3 is composed of the following components by mass percentage: 5% ammonium chloride, 14% hydrochloric acid, 18% penetrant fast T, 18% penetrant JF, 24% diglycoside alcohol, 8% n-butanol, 8% ethyl acetoacetate and 5% cyclohexanone. The mass concentration of hydrochloric acid is 31%; The penetrating agent fast T is sodium di-second-octyl maleate sulfonate; The penetrating agent JF is polyoxyethylene fatty alcohol ether JFC, and its chemical structural formula is C 17～19 h 21 o 6 (n=5).

[0048] Example 3 of the present invention is suitable for the liquefaction process of combustible ice in quartz sandstone with kaolinite as the filling and cement as the main material, and realizes rapid supercooled liquefaction at a freezing point of -60...

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Abstract

The invention discloses a rapid combustible ice supercooling nano liquefier and a method for exploiting combustible ice with same, aims to achieve safe, environment-friendly, economic and effective combustible ice exploitation and has excellent development prospects. The rapid combustible ice supercooling nano liquefier comprises the following components in percentage by mass: 0-25% of ammonium salt, 0-25% of an acid, 10-80% of a penetrant, 0-25% of amide, 5-70% of an ester, 2-40% of an ether, 0-35% of an alcohol, 0-25% of ketone and 0-35% of aldehyde. According to rock ore components, the liquefier which has an ice point of minus 200 DEG C to minus 10 DEG C and is high in flash point, high in rock dissolution rate, large in permeability, low in injection pressure, rapid in injection pressure drop, long in effective supercooling liquid liquidation distance between single wells and group wells, large in volume, rapid in supercooling liquidation speed and safe and environment-friendly can be prepared, and low-cost large-scale long-term production of methane gas from combustible ice is rapidly achieved initially in the whole world.

Description

technical field [0001] The invention relates to the technical field of combustible ice energy development, in particular to a combustible ice rapid supercooling nano liquefaction agent and a method for mining combustible ice. Background technique [0002] At present, the world's conventional oil and natural gas resources are hugely consumed and are facing depletion, and there is an urgent need to develop new energy sources. Gas hydrate (Natural Gas Hydrate, referred to as Gas Hydrate) is combustible ice, which is distributed in deep sea sediments or permafrost in land areas, and is an ice-like crystalline substance formed by natural gas and water under high pressure and low temperature conditions. The distribution range is very wide. Scientists' evaluation results show that the distribution area of ​​combustible ice in the seabed area alone reaches 40 million square kilometers, accounting for 1 / 4 of the total area of ​​the earth's oceans. And under standard conditions, a u...

Claims

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Application Information

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IPC IPC(8): C09K8/00C09K8/58E21B43/01E21B43/16
CPCC09K8/00C09K8/58E21B43/01E21B43/16
Inventor 冯文光冯妍冯卓冯博
Owner CHENGDU NENGSHENGCAI SCI & TECH DEV CO LTD
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