JPH0626293A - Method for extinguishing oil well fire - Google Patents

Abstract

PURPOSE:To ensure a fire fighting activity to be undertaken properly against an oil well fire by surrounding the vertical state of a fire at the well with a bank or the like, and applying a means for changing the vertical state of the fire to horizontal state. CONSTITUTION:A bank 4 formed with a steel sheet pile 2 and a fill 3 is built around an oil well 1 where a fire broke out, and cylindrical space 7 is thereby formed. In addition, the bank 4 is fitted with valves 5 and 6, and coal tar of high viscosity, crude oil or the like is supplied to the space 7 via the valves 5 and 6, thereby reducing the blow pressure of the well 1. Then, when the fire changes from vertical state to horizontal state, the space 7 is covered with a float 15 via a wire 16, and, then, chemical fire extinguishing agents are spread for extinguishing the fire.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique necessary for extinguishing an oil fire.

FIG. 3 is a schematic diagram for explaining a conventional structure for extinguishing an oil fire. In the figure, 1 is an oil well causing an oil fire, 8 is the ground, 17 is a crane, and 16 is a wire. A rope or the like 18 is an explosive material such as dynamite.

Conventionally, an explosive such as dynamite 18 is exploded immediately above the oil well 1 in which an oil fire is occurring, and the periphery of the oil well 1 in which an oil fire is caused is instantaneously made oxygen-free. , Extinguishing an oil fire.

[0004]

However, in the conventional method shown in FIG. 3, the larger the oil fire is, the more accurate the fire of the oil well 1 that extinguishes the oil fire is by using only the explosive material 18. There is a drawback that you cannot do.

The present invention is directed to extinguishing an oil well causing an oil fire.

[0006]

FIG. 1 is a diagram for explaining the principle of the present invention, in which 1 is an oil well causing an oil fire, 2 is a steel sheet pile, 3 is embankment, and 4 is Embankments made of steel sheet pile and embankment, etc., 5 and 6 are valves, 7 is a cylindrical space formed inside the embankment, and 8 is the ground.

[0007]

[Function] A circular dike or the like 4 is formed around the oil well 1 in which an oil fire is caused by using steel sheet piles 2 and the embankment 3 in a circular shape, and a cylindrical shape formed inside the dike 4 or the like. Space 7
In addition, high-viscosity coal tar, crude oil, or the like is injected using the valve 5 or the like to change the state of the eruption fire from the state in which the eruption fire in the vertical state is caused to the state of the horizontal plane fire.

When a certain amount of coal tar or crude oil is injected into the space 7 having a cylindrical shape and reaches a certain depth, and when the coal tar or crude oil forms a horizontal surface, the cylindrical shape or the like is formed. The amount of crude oil and the like inside the space 7 is set to a certain level.

In order to keep the depth of the crude oil or the like inside the cylindrical space 7 constant, the crude oil or the like ejected from the oil well is used from the inside of the cylindrical space 7 by using the valve 5 or the like. Etc.

The crude oil or the like drawn from the valve 5 or the like from the inside of the space 7 having a cylindrical shape does not cause a fire, though the temperature of the crude oil or the like is higher than room temperature. , Will not cause a fire.
If the temperature of crude oil has risen to a temperature that causes a fire, it is advisable to cool the dike or crude oil.

When the crude oil reaches a certain depth inside the space 7 having a cylindrical shape and the crude oil forms a horizontal surface, the fire that is causing a fire on the horizontal surface is extinguished. In order to do so, extinguish the fire using a chemical extinguishing agent or the like through the valve 6 or the like.

[0012]

EXAMPLE An example of the present invention will be described below with reference to FIG. FIG. 2 is a schematic explanatory view of a hand-step structure for extinguishing an oil fire according to the embodiment of the present invention, FIGS. 2 (A), (B) and (C) are longitudinal sectional views, and FIG. 2 (D) is a plan view. Then, in the figure, 9, 10,
Reference numerals 11, 12, 13, and 14 are flames that are causing a fire of spouting crude oil, and 15 is a steel float or the like.
6 is a wire rope or the like, and X is the depth.

Around the oil well 1 in which an oil fire is occurring, a levee 4 is formed by using a steel sheet pile 2 and an embankment 3 in a circular shape, and a cylindrical space 7 formed inside the levee 4 is formed. A valve 5 or the like is used to inject highly viscous coal tar, crude oil, or the like to reduce the ejection pressure of the oil well 1 in which an oil fire is occurring.

Inside the space 7 having a cylindrical shape, a valve 5 or the like is provided.
Before injecting high-viscosity coal tar or crude oil, etc., the injection pressure shown in Fig. 2 (A) is shown in Fig. 2 (B) and the depth of coal tar or crude oil is shown in Fig. 2 (B). As shown in FIG. 2, when the depth reaches the depth of X, the jet fire shown in FIG.
From the vertical flames of 12, 13 and 14, FIG.
9 and 1, which have caused a gushing fire.
It changes to a horizontal plane flame of 0, 11, 12, 13, and 14.

In the space 7 having a cylindrical shape, a valve 5 is provided.
Is used to inject crude oil or the like, and the crude oil or the like is injected so that the depth of the crude oil or the like becomes a state of depth X and the ejection pressure of the crude oil or the like is as shown in FIG. 2 (B). At the stairs where the eruption fire was reduced and the eruption fire changed from a vertical state to a state close to the horizontal plane, a steel float etc. 15,
When the wire rope 16 or the like is used to fix the flame immediately above the flame state of 9, 10, 11, 12, 13, and 14 causing the jet fire, as shown in FIG. 9,10,11,12,1 causing eruption fire
The fire conditions of 3 and 14 become horizontal.

Using a steel float 15 or the like, FIG.
As shown in (C), when the state of the flame causing the jet fire is changed to the horizontal flame state, the chemical extinguishing agent or the like is sprayed on the horizontal plane of crude oil using the valve 6 or the like. And extinguish the fire.

[0017]

As described above, according to the present invention,
To extinguish an oil well that is causing an oil fire, use coal tar or crude oil to lower the ejection pressure and change the eruption state of crude oil, etc. ejected from the well from a vertical state to a state close to a horizontal plane. It is effective to use a chemical extinguishing agent to extinguish the fire, so it is possible to extinguish the fire without using any water.

According to the present invention, in order to extinguish an oil well causing an oil fire, coal tar, crude oil or the like is used to reduce the jet pressure, and the crude oil or the like jetted from the oil well is burned in a vertical flame. Since it changes to a flame that is close to the horizontal plane, the crude oil, etc. ejected from the oil well causes a fire.Since only the part in contact with air on the horizontal plane causes a fire, the inside of the cylindrical container No fire will occur even if the crude oil is extracted from the valve.

According to the present invention, after extinguishing an oil fire as in the conventional case, mud water mixed with clay components to increase specific gravity is injected into the inside of the oil well to stop the jetted crude oil, and then the jet is ejected. There is no need to reduce the jet pressure of crude oil or the like to stop.

According to the present invention, after extinguishing an oil well causing an oil fire, it is not necessary to carry out a full-scale restoration work.
Crude oil, etc. ejected from the oil well can be collected.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is a schematic structural explanatory view showing a means for extinguishing an oil fire according to an embodiment of the present invention, FIGS. 2 (A), (B) and (C) are longitudinal sectional views, and FIG. It is a figure.

FIG. 3 is a schematic structural explanatory view showing a conventional means for extinguishing an oil fire.

[Explanation of symbols]

1 Oil well causing an oil fire 2 Steel sheet pile, etc. 3 Embankment, etc. 4 Levees, etc. 5 and 6 Valves, etc. 7 Cylindrical space, etc. 8 Ground 9, 10, 11, 12, 13, and 14 Flame causing eruption fire State 15 Steel float 16 Wire rope 17 Crane 18 Explosive X Depth

Claims (3)

[Claims] 1. An embankment (4) having a circular shape is formed around an oil well (1) having an oil fire, and the embankment (4) is formed.
Extinguish an oil fire characterized by injecting and digesting highly viscous coal tar or crude oil into the inside of a cylindrical space (7) created inside the container using a valve (5) how to. 2. The oil fire according to claim 1, wherein the fire causing the jet flame in a vertical state is extinguished by using a steel float or the like (15) to bring it into a horizontal plane fire state. how to. 3. A method for extinguishing an oil fire according to claim 1, wherein a bank (3) and a steel sheet pile (2) are used to form the embankment (4).