RU2566355C1 - Method of delivery of explosive devices using horizontally directed drilling unit - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: invention relates to anti-terror measures and can be used for selective blasting of buildings, reinforced structures and communications in urban conditions at maximum level of security of explosive team personnel. The explosive assembly is delivered under the blown-up object by the horizontally directed drilling (HDD) unit through the drilled well. The method of delivery of explosive assemblies by means of the horizontally directed drilling unit includes the erection of horizontally directed well under the object to be exploded and carrying out of drilling operations from the safe shelter. Delivery of the explosive assembly is performed by the drilling string consisting of drilling pipes, the string disconnector and the drilling tool, while the explosive assembly includes the special capsule placed with the drilling string, and explosive. The method can be used for initiating of explosions of low and average power.

EFFECT: invention allows to improve efficiency of explosive works and their safety.

1 dwg

Description

 The invention relates to the field of combating terrorism and can be used to selectively undermine buildings, fortified structures and communications in an urban environment with maximum protection for the personnel of the explosive team. In this case, the explosive device is delivered under the exploded object by the installation of horizontal directional drilling (HDD) through a drilled well.

Known methods for the delivery of explosives (explosive devices) into a drilled hole for perforation - an operation carried out in a well using special firing apparatus (perforators) to create holes in the casing for communication between the well and the reservoir. For these purposes, bullet and cumulative perforators are used, delivered to the perforation site using a logging cable [1] (http://www.allbest.ru/. Kazan (Volga Region) Federal University, Department of Geology, Department of Oil and Gas Geology. Types of well perforation . 2011).

A common disadvantage of the above methods for the delivery of explosives (explosive devices) into the well is the inability to use them for the purposes stated in this invention.

The aim of the present invention is to provide a method for the delivery of explosives using the installation of HDD, providing:

- safe conduct of drilling and demolition of buildings, fortified structures and communications in urban conditions with maximum protection of the personnel of the explosive team;

- high accuracy of delivery of explosive devices under the building, fortified structure or communications.

The essence of the present invention lies in the fact that the inventive method for delivering explosive devices using a horizontal directional drilling rig, which includes the construction of a horizontal directional well under an explosive object, according to the invention additionally offers drilling operations due to safe shelter, and the delivery of an explosive device under the blasting object offers to produce using a drill string, consisting of drill pipes, a disconnector string and drill tool, with that the explosive consists of a special capsule placed in a part of the drill string, and the explosive.

The drawing shows a diagram of a method for the delivery of explosives using the installation of HDD, where:

1 - safe shelter;

2 - an explosive object;

3 - installation of horizontal drilling;

4 - drilling tool;

5 - drill string;

6 - column disconnector;

7 - a special capsule;

8 - horizontal directional well;

9 - explosive.

The method of delivery of explosive devices using HDD installation is as follows. Due to the safe shelter 1 for the object to be exploded 2, a horizontal drilling unit 3 using a drill tool 4 of the drill string 5, consisting of drill pipes connected through the disconnector of the drill string 6 with a special capsule 7 installed immediately behind the drill tool 4, is drilled horizontally wells 8. An explosive device consists of an explosive substance 9 placed in a special capsule 7 having connecting threads and a bore for supplying drilling mud, similar to pipes am of the drill string 5. A special capsule 7 transmits torque to the drill tool 4 and has a cavity for containing explosive material 9. The distance from the horizontal drilling unit 3 to the blasting object 2 can be determined with an accuracy of 1 m, it is determined by the length of the components elements in the drill string 5. The direction of the horizontal directional borehole 8 and the depth of its passage are determined only in the safe shelter zone 1 using the traditional HDD drilling method onnogo equipment. Before blasting, the components of the drill string 5 are removed from the well and the special capsule 7 with the explosive substance 9 is set aside at the desired point. This is done using the drill string disconnector 6, reversing the rotation of the drill string 5. The blasting agent 9 can be blasted in any known manner both wired and wireless.

The proposed method can be used when conducting explosions of small and medium power, it helps to increase the efficiency of blasting and increase their safety, since they are carried out due to safe shelter.

Information sources

1. http://www.allbest.ru/. Kazan (Volga) Federal University, Faculty of Geology, Department of Oil and Gas Geology. Types of perforation wells. 2011 year

Claims (1)

A method of delivering explosive devices using a horizontal directional drilling rig, including the construction of a horizontal directional well under an explosive object, characterized in that drilling operations are carried out due to safe shelter, and the delivery of an explosive device under an explosive object is carried out using a drill string, consisting of drill pipes, a string disconnector and a drill tool, wherein the explosive device consists of a special capsule housed in the drill string, and an explosive substance.

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