Water spraying system capable of inhibiting flash explosion fire on drill floor

Abstract

The invention relates to a water spraying system capable of inhibiting flash explosion fire on a drill floor, which belongs to the technical field of fire extinguishing systems of drilling platforms and comprises a water tank, a submersible pump, a steel pipeline and a directional spray head, a plurality of steel pipelines with directional sprayers are arranged upwards from a derrick of a drilling machine to a crown block, the directional sprayers are of tubular structures, the two ends of each directional sprayer are in screwed connection with the steel pipelines, the steel pipelines are connected through bent connectors, and the steel pipelines are in threaded connection with the bent connectors. The water spraying system is easy to install and convenient to control, manual / automatic control can be directly conducted by a specially-assigned person, water mist is fully distributed in the space from the drill floor face to the top of the crown block, and flash explosion and fire accidents caused by the fact that the concentration of flammable and explosive hazardous gas reaches the explosion limit are prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of fire fighting systems on drilling platforms, and in particular relates to a water spray system capable of suppressing flash fires on drilling platforms. Background Art

[0002] As the country's emphasis on safety and environmental protection has also reached a new level, in this context, some actions or events that violate environmental protection requirements in past drilling engineering operations will have less and less room for survival. However, even if the requirements are stricter, uncontrollable events in drilling engineering will often cause irreversible damage to the environment. As oil exploration and development advances deeper into the stratum, some unknown factors also restrict our level of understanding, resulting in inevitable oil and gas spills during oil exploration and development. If handled properly, it will be fine. Once handled improperly, such as a small-scale well control incident, the impact on the surrounding environment and the people is imaginable. If an uncontrollable well control accident occurs, such as a blowout, the impact on the environment is immeasurable. Similarly, the adverse social impact caused is even more devastating. Although our level of understanding may be limited, we still have a deeper understanding of the possible events or accident scenes that may occur in the well during oil exploration and development. It is nothing more than the escape of toxic and harmful gases, and then the fire caused by flammable and explosive gases. As for the escape of toxic and harmful gases, the current technology is relatively mature and highly sensitive, which allows the on-site drilling staff to discover them in time and use mature technology to deal with them. Toxic and harmful gases can often be eliminated in the bud. Even if they escape, they will be small-scale and will not leave the well site, and will not cause any impact on the surrounding environment and people. However, as for fire accidents caused by flammable and explosive gases, there are currently no measures and means to kill them in the cradle. As you can see, there are often large numbers of firefighters holding fire hoses and spraying water to extinguish the fire at the fire scene. Therefore, there is no effective control method for fires caused by flammable and explosive gases sprayed out of the wellbore on the drilling platform at the drilling site, which is also a loophole in safety management. Summary of the invention

[0003] In order to solve the above-mentioned problems, the present invention proposes: a water spray system for suppressing flash fire on a drilling platform, comprising a water tank, a submersible pump, a steel pipeline, a directional nozzle, and the submersible pump is arranged in the water tank, and the submersible pump is connected to the directional nozzle through a steel pipeline.

[0004] Furthermore, a plurality of steel pipelines with directional nozzles are arranged upward along the drilling rig derrick to the overhead crane.

[0005] Furthermore, the directional nozzle is a tubular structure, and both ends of the directional nozzle are threadedly connected to the steel pipeline.

[0006] Furthermore, the steel pipelines are connected via elbow joints.

[0007] Furthermore, the steel pipeline is threadedly connected to the elbow.

[0008] Furthermore, the water tank has a capacity of 100m 3 ;

[0009] Furthermore, the number of the submersible pumps is four.

[0010] Furthermore, the power of the submersible pump is greater than 7.5KW, and the lift of the submersible pump is greater than 60m.

[0011] The beneficial effects of the present invention are as follows: the water spray system of the present invention is easy to install and control, and can be directly controlled manually or automatically by a dedicated person to achieve the space from the drilling table to the top of the overhead crane is filled with water mist, preventing the concentration of flammable and explosive dangerous gases from reaching the explosion limit, thereby causing flash explosions and fires. Just like conventional fire extinguishers, controlling the initial fire can avoid major accidents, that is, controlling the explosion and fire in the embryonic stage, thereby ensuring that the interests of the enterprise are not damaged and the personal safety of personnel is guaranteed.

[0012] Once a well control hazard occurs, the water pump can be started immediately, and the water in the water tank enters the steel pipeline through the water pump, and water mist can be sprayed out from the pipeline nozzle. The water mist sprayed by the four pipelines forms a seamless water mist space on the four sides and the center of the drilling platform, reducing fire accidents caused by sparks. The effect is like using a hand-held fire extinguisher or a cart-type fire extinguisher to extinguish a fire in the early stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the water pump of the present invention;

[0014] Figure 2 It is a schematic diagram of a steel pipeline;

[0015] Figure 3 It is a schematic diagram of the elbow joint;

[0016] Figure 4 This is a schematic diagram of a steel pipeline with a water mist nozzle. DETAILED DESCRIPTION

[0017] In order to make the technical means and objectives adopted by the present invention easy to understand, the present invention is further explained below in combination with specific implementation methods. A water spray system for suppressing flash fire on a drilling platform includes a water tank, a submersible pump, a steel pipeline, a directional nozzle, and the submersible pump is arranged in the water tank. The submersible pump is connected to the directional nozzle through a steel pipeline.

[0018] Among them, multiple steel pipelines with directional nozzles are arranged upward along the drilling rig derrick to the overhead crane.

[0019] Wherein, the directional nozzle is a tubular structure, and both ends of the directional nozzle are threadedly connected to the steel pipeline.

[0020] Wherein, the steel pipelines are connected via elbow joints.

[0021] Wherein, the steel pipeline is threadedly connected to the elbow.

[0022] Among them, the tank capacity of the water tank is 100m 3 ;

[0023] Among them, the number of the submersible pumps is four.

[0024] Wherein, the power of the submersible pump is greater than 7.5KW, and the head of the submersible pump is greater than 60m.

[0025] The invention arranges a plurality of steel pipelines (with directional nozzles) along the drilling rig derrick upwards to the crown block, the lower end of the pipeline is connected to the steel pipeline, and the steel pipeline is connected to a submersible pump in a special water tank.

[0026] Elbow joints can connect two steel pipelines of different specifications.

[0027] The water spray system with manual control function on the drilling platform is composed of a water tank, a submersible pump, a steel pipeline (without directional nozzles), elbows, and a steel pipeline (with directional nozzles). It can be prepared and assembled by professionals, as long as the sealing of the pipeline and the sealing of the welding and threaded connections are guaranteed.

[0028] Production conditions:

[0029] like Figure 1 As shown, the submersible pump is the power source, as long as it meets the specification requirements;

[0030] like Figure 2 As shown in the figure, it is a steel pipeline without directional nozzles. Figure 4 The steel pipeline with directional nozzles is shown in the figure. The model and specifications of the pipes are consistent. Figure 4 The nozzle on the pipe body is preferably connected to the pipe body by threaded connection rather than welding;

[0031] like Figure 3 As shown, the elbow assembly should be Figure 2 and Figure 4 The model and specifications of the pipes remain consistent;

[0032] Directions:

[0033] The control device should be beside the driller and within reach. Once a dangerous situation occurs on the drilling platform, the driller will start the system while blowing the whistle for 15 seconds, and then carry out normal well shut-in operations.

[0034] After the system is started, the submersible pump starts, and the water in the water tank flows through the submersible pump to Figure 2 The steel pipeline shown is Figure 3 The elbow joint enters Figure 4 In the steel pipeline, Figure 4 The water mist is sprayed out from the water mist nozzle of the pipe body, and then the water mist fills the space formed by the drilling platform and the derrick, preventing the escape of flammable and explosive gases, which may cause fires and induce accidents.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A water spray system for suppressing flash fire on a drilling platform, characterized in that: The invention comprises a water tank, a submersible pump, a steel pipeline and a directional nozzle. The submersible pump is arranged in the water tank, and the submersible pump is connected with the directional nozzle through the steel pipeline.

2. The water spray system for suppressing flash fire on the drilling platform according to claim 1, characterized in that: Multiple steel pipelines with directional nozzles are arranged upward along the drilling rig mast to the crown block.

3. The water spray system for suppressing flash fire on the drilling platform according to claim 1, characterized in that: The directional nozzle is a tubular structure, and both ends of the directional nozzle are threadedly connected to the steel pipeline.

4. The water spray system for suppressing flash fire on the drilling platform according to claim 1, characterized in that: The steel pipelines are connected via elbow joints.

5. The water spray system for suppressing flash fire on the drilling platform according to claim 4, characterized in that: The steel pipeline is threadedly connected to the elbow joint.

6. The water spray system for suppressing flash fire on the drilling platform according to claim 1, characterized in that: The water tank has a capacity of 100m 3 .

7. The water spray system for suppressing flash fire on the drilling platform according to claim 1, characterized in that: The number of the submersible pumps is four.

8. The water spray system for suppressing flash fire on the drilling platform according to claim 1, characterized in that: The power of the submersible pump is greater than 7.5KW, and the head of the submersible pump is greater than 60m.

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