RU2264525C2 - Device to prevent extraction of charges or blocks of industrial explosives from well - Google Patents

Abstract

FIELD: explosive works, particularly apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells.

SUBSTANCE: device has body with closed bottom and springing locking members made as two thrust plates with stiffening ribs. Body bottom is made as thrust disc with stiffening ribs and sharp side surface. Disc has orifices for receiving communication cable, which establishes communication with explosive. Formed inside the body are two rests to provide device rotation inside the well. Body surface has two fixing orifices with slots adapted to install the device inside the well. Device has shoulder to wedge the device during cooperation thereof with sharp side surface of thrust disc.

EFFECT: increased reliability of device fixation in well and increased safety of extended explosive charge storage at optimal depth.

4 dwg

Description

The device that prevents the extraction (UPI) from the well of charges, blocks of industrial explosive materials (VM), relates to the field of blasting in seismic operations near settlements.

Known locking device for charging wells with VM charges (AS No. 1118845), comprising a housing with a conical head, in which spring-loaded locking elements are installed that interact with the walls of the wells, and to increase the reliability of fixing the locking device in the well by increasing the contact area of the corresponding elements devices with borehole walls, the casing is made split in the form of a movable and fixed wedges with working surfaces. The device is designed to mechanize the loading of wells VM.

The disadvantages of the known locking device include the insufficient contact area of the locking elements with the walls of the wells, as a result of which a reliable spacing is provided mainly in strong stable rocks where there is no “sliding” of the locking device.

In addition, during drilling, the cross section of the well is usually not maintained, and the stop elements in such places do not come into contact with the walls of the wells.

The purpose of the invention is the conduct of seismic surveys near settlements, ensuring the safety of charges, VM blocks in the wells for a long time and at the optimum depth, increasing the reliability of fixation of UPI in the well by applying double locking on the wall of the well.

This goal is achieved by the fact that this device, which prevents the extraction of VMs (charges, blocks), contains a housing with holes and stops inside, a shoulder on the end, grooves (retainer), a blank bottom that goes into a thrust disc with holes and an acute angle on the side surfaces, ribs, on spring retaining elements there are plates and ribs.

UPI is used for dry and flooded wells at temperatures from -50 ° C to + 50 ° C. Well jammed wells with various types of geological sections.

UPI can be used in wells of any diameter, selecting an execution interval of up to 50 mm, since elastic material is accepted for the manufacture of UPI.

The figure 1 shows a device that prevents extraction (UPI), side view; in figure 2 - UPI, top view; figure 3 is a diagram of the installation of UPI; figure 4 is a diagram of the operation of the device in the process (attempt) of extracting the VM from the well.

The device that prevents the extraction of the VM consists of a housing 1 (in the form of a glass), spring retaining elements 2, a thrust disk 3.

The housing, the spring locking elements and the thrust disk are reinforced with stiffeners 6, 8, 9, 10, 13, the housing 1 is provided with holes 4, 14, grooves 5, a shoulder at the end 7, internal stops 12. The spring locking elements 2 consist of thrust plates and stiffeners on both sides. The thrust disk 3 contains 2 holes 11 and the side surface 20 at an acute angle, stiffeners 10,13 in the bottom part (figure 1, 2).

Installation UPI in the well is as follows.

In the hole 11 from the side of the end face of the thrust disk 3, wires 17 of the electric detonator are passed. The pole 19 with the adapter 15 is inserted into the housing 1 until it stops, is fixed through the hole 4 with a finger 16.

UPI through a pole is fed into the well. After the UPI reaches the desired depth, remove the pole (figure 3). UPI, hovering on the locking elements, upon reaching the necessary wedge locking force (40 kg. C) is undocked due to the deformation of the grooves with 5 fingers 16.

The internal stops 12 in the housing serve to rotate the UPI around its axis, the holes 14 - for depressurization when waterlogged wells.

To check the reliability of locking before installing the UPI into the well, a wire 18 is fastened through the free hole 11, 14. After removing the pole, they pull the wire 18, the UPI bends, a second wedging is created in the well by the sharp lateral surface of the thrust disc and the shoulder of the body end. Wires 18 are stretched until the breakage (wire GUSP-232 - breaking force of 40 kgf). (Figure 4).

The advantage of the proposed device for industrial blasting is as follows:

1. Ensures the integrity (indistinguishability) of the structure and rotation around its axis.

2. Double wedging applied.

3. There are stiffeners on the body, retaining elements, thrust disc, ensuring the safety of the device during transportation, storage and ease of use.

4. Used for wells of any diameter and depth.

5. Fails to jam wells with various types of geological sections and does not allow unauthorized persons to extract VMs from the well.

Claims (1)

A device that prevents the extraction of charges, blocks of industrial explosive materials from the well, comprising a housing with a blind bottom and spring locking elements, characterized in that the spring locking elements are made in the form of thrust plates with stiffeners, and the bottom of the body - in the form of a thrust disc with stiffeners and a sharp lateral surface, while in the disk there are holes for wires for communication with explosive material, two stops inside the body to allow rotation in the well, and on the surface of the body mustache - two fixing holes with grooves for installing the device in the well, and a collar for wedging the device in the well in cooperation with the sharp side surface of the thrust disk.

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