RU149819U1 - TELESCOPIC DRILLING PILL - Google Patents

Abstract

Telescopic drill string, including the outer and inner rods made with the possibility of displacement relative to each other with connecting elements for fastening, respectively, with the movable rotator of the machine tool and rock cutting tool, a locking joint for transmitting torque and axial force between the outer and inner rods, made in the form located on the inner rod of at least two curly grooves and fixed with the outer rod stop with an inner protrusion, characterized in the emphasis is placed on the upper end of the outer rod, the connecting element for fixing with the rock cutting tool - at its lower end, and a connecting member for fastening the telescopic rod rotator machine formed in the upper portion of the inner rod.

Description

Known telescopic drill string, including made with the possibility of displacement relative to each other, the outer and inner rods with connecting elements for mounting, respectively, with the rotator of the machine and rock cutting tool [1, 2].

With this design, the outer and inner rods are fixed relative to each other with pins. This is inconvenient in drilling conditions and requires a lot of time to align holes when placing pins in them.

Also known is a telescopic drill string, including external and internal rods made with the possibility of displacement relative to each other with connecting elements for fastening with a movable machine rotator and rock cutting tool, respectively, a locking joint for transmitting torque and axial force between the outer and inner rods, made in the form located on the inner rod, at least two, figured grooves and fastened with the outer rod stops with internal protrusions [ 3]

However, the known device has the following disadvantages.

The stops are made on the inner surface of the outer rod, which complicates its manufacture.

The outer rod is fixed in the movable rotator of the drilling rig, which leads to an increase in its dimensions and its weight, which, in turn, creates additional loads on the rig itself and leads to its weight. The extension of the step with the application of this design is produced by an additional winch, which complicates the production of work.

The result, which this technical solution is aimed at, is to simplify the manufacture of the structure while simplifying the production of auxiliary works.

This result is achieved due to the fact that in the telescopic drill string, including the outer and inner rods made with the possibility of displacement relative to each other, with connecting elements for fastening with the movable rotator of the machine and the rock cutting tool respectively, a locking joint for transmitting torque and axial force between the outer and the inner rods, made in the form located on the inner rod, at least two, curly grooves and fastened to the outer headquarters goy abutment with an inner projection. The emphasis is placed on the upper end, the connecting element for mounting with a rock cutting tool on the lower end of the outer rod, and the connecting element for mounting the telescopic rod with the machine rotator is made in the upper part of the inner rod.

An example embodiment of the device is illustrated by drawings, where in FIG. 1 shows a machine with a movable rotator and a telescopic drill string; in FIG. 2 - telescopic drill string, in FIG. 3 - place A, in FIG. 4 - section DD, in FIG. 5 is a step in a perspective view, in FIG. 6 - inner rod; FIG. 7 - overlay of the figured groove of the castle connection; FIG. 8, 9 are sections G-G and BB, respectively, in FIG. 10-12 the position of the locking joint of the telescopic drill string, respectively, when drilling, in the open state and lifting the tool.

The telescopic drill string 1 includes external 2 and internal 3 rods with the possibility of longitudinal displacement relative to each other with connecting elements 4, 5 for fastening, respectively, with the movable rotator 6 of the machine 7 and the rock cutting (screw) tool 8, the locking connection 9 for transmitting torque moment and axial force between the outer 2 and inner 3 rods, made in the form located on the inner 3 rod, at least two, curly grooves 10 and fixed with the outer rod 2 emphasis and 11 with an internal protrusion 12. Figured groove on the inner rod can be performed using the lining 13

The emphasis 11 is placed in the upper part of the outer rod 3 and fastened to the last bolts. The connecting element 5 is located in the lower part of the outer rod. The connecting element 4 for mounting a telescopic rod with a movable rotator of the machine is made in the upper part of the inner rod 3.

The castle connection of the telescopic drill string has three positions:

- The lock connection is closed. The inner protrusion 11 of the stop 12 interacts with the bottom wall 14 of the figured groove 10. In this case, rotary drilling is possible with the creation of axial force through the movable rotator by the feed mechanism of the drilling rig;

- The lock connection is open. The inner protrusion 11 of the stop 12 is outside the figured groove 10. It is possible to extend and fold the telescopic drill string and rotate drilling under the own weight of the telescopic drill string and screw tool;

- The lock connection is closed. The inner protrusion 11 of the stop 12 interacts with the upper wall 15 of the figured groove Yu. It is possible to raise the tool.

Drilling is as follows.

The machine is leveled by means of, for example, jacks 16. The mast 17 is mounted in a vertical position. Drilling a well to a depth equal to the length of the screw tool with transportation of cuttings.

In this case, the locking connection is in the closed position. The inner protrusion 11 of the stop 12 interacts with the bottom wall 14 of the figured groove 10. In this case, the axial force and torque are transmitted to the outer rod and the screw tool. The length of the screw tool is used for a shorter design depth of the well. This allows you to reduce the length of the mast of the machine.

After drilling is completed to a depth equal to the length of the screw tool, the castle connection is opened, the inner rod is pulled up using a movable rotator and equal to the difference between the design depth of the well and the screw tool, and the castle connection is closed using the corresponding figured groove on the inner rod. Drilling a well to the design depth.

Next, open the castle connection and slide the inner rod into the outer column and close the castle connection. Then the auger tool is lifted together with the cuttings and the cuttings are unloaded.

Thus, these technical solutions will allow:

- To simplify the manufacture of a telescopic column, since with such a design solution it is not necessary to perform protrusions on the inner surface of the pipe;

- To facilitate the extension and folding of the telescopic drill string without the use of an additional winch, which will reduce the complexity of the auxiliary operations

Information sources

1. Patent US 3517760, NKI 175/321, 1970

2. Certificate for utility model of the Russian Federation No. 30155, MKI E21B 17/07, 2002

3. RF patent No. 2260666, MKI E21B 17/07, 2005

Claims (1)

Telescopic drill string, including the outer and inner rods made with the possibility of displacement relative to each other with connecting elements for fastening, respectively, with the movable rotator of the machine tool and rock cutting tool, a locking joint for transmitting torque and axial force between the outer and inner rods, made in the form located on the inner rod of at least two curly grooves and fixed with the outer rod of the stop with an inner protrusion, characterized in the emphasis is placed on the upper end of the outer rod, the connecting element for fixing with the rock cutting tool - at its lower end, and a connecting member for fastening the telescopic rod rotator machine formed in the upper portion of the inner rod.

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