SU1559093A1 - Arrangement for protecting drilling tool from drilling fines - Google Patents

Abstract

The invention relates to the mining industry and can be used for drilling wells. The goal is to increase the efficiency of the device by reducing energy consumption and simplifying the design. For this, the exhaust valve 6 is made in the form of an annular disk and is located in the storage tank 4. The device has a check valve 3, made in the form of a disk, blocking the outlet openings of the tank 4, and having rods fixed at one end on it, and the other on valve 6 at the working position of the valve 3. The valve 6 is spring-loaded with two groups of springs. The first of the spring groups is longer than the second one, and the possibility of opening the convex orifice with valve 6 under the action of the first spring group and valve 3 under the action of the second spring group in its inoperative position. The device has a tapered moisture separator 7, made with vertical through slots 11, which are located under duct 2. Fluid from tank 4 flows along the periphery of valve 3 and initially fills the lubrication channels and bit bearings, then it is the lower part of the drilling tool and the well. The fluid flows until the pressure on the valve 3 becomes less than the mass difference of the valves 3 and 6 with the rods 8 in the air and the liquid. At this moment, the springs move the valve 3 to the upper position, press it to the ring sickle, block the paths of fluid movement upwards, forming a hydraulic lock. 1 hp f-ly, 3 ill.

Description

The invention relates to the mining industry and can be used in the drilling of wells.

The aim of the invention is to increase the efficiency of the device by reducing energy costs and simplifying the design

Figure 1 shows the device of the drilling tool of the drilling tool} in figure 2 - the same, longitudinal section; on fig.Z - the same, cross section;

The device comprises a housing 1, a duct 2 with a check valve 3 centrally located in the housing 1, and a storage tank 4 with outlets 5 that are blocked by an inlet valve 6. In the case 1 a conical moisture separator 7 is located above the storage tank 4 the valve 6 is made in the form of an annular disk and is located in the storage tank 4. The check valve 3 is made in the form of a disk and blocks the outlet openings 5t. The check valve 3 is equipped with rods 8, one ends of which are fixed in the check valve 3 and others the exhaust valve 6, the exhaust valve 6 is spring-loaded with two groups of springs, the first 9 of which are longer than the second 10. The conical dehumidifier 7 is made with vertical through slots 1t, which are located above the air duct 2.

The device works as follows.

In the process of drilling a well, the purge agent, due to the velocity head, pushes the check valve 3 into the lower position, overcoming the force of the springs 9 and 10 of the compression 5 and the rods 8

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presses the exhaust ring valve 6 to the annular flanges of the discharge valve 5 $, which is generated by the discharge tank 5 (figure 2 and 3). Bypassing the conical moisture separator 7, the blowing agent releases part of the liquid, which flows down the inner walls of the housing 1 into the storage tank 49 where it accumulates. Another part of the fluid is supplied to the bottom of the well for dust suppression.

When the supply of purge agent to the housing 1 (boom buildup, electrical shutdown is rotten) stops, springs 9 and 10 close the check valve 3 and the rods 8 lift the annular outlet valve 6 upward, overcoming the static pressure of the liquid in the storage tank 4 by valve 6, open the outlet holes 5 in the base of the storage tank 4 (Fig.2 and 3). This clean fluid from the storage tank 4 through the outlet 5 flows to the check valve 3 and due to the velocity head compresses the spring 9, lowering the check valve 3 and the exhaust ring valve 6 to the spring 10, ensuring free flow of fluid (figure 2).

The liquid from the storage tank 4 flows along the periphery of the check valve 3 and initially fills the blow-lubrication channels and bearings of the roller bit, and then fills the lower part of the drilling tool and the well. At the same time, the raised drill cuttings from the bottom of the well cannot get into the blowing-lubrication channels and roller bit bearings filled with clean fluid. Having filled the drilling tool and the well, the fluid continues to flow from the storage tank 4 into the drilling tool and the well until the valve 3 of the liquid column in the device, equal in height to the difference in the levels of the liquid inside the device and the well, will not be less than the difference in weight of valves 3 and 6 with the rods 8 in the air and liquid. At this moment, the springs 9 move the check valve 3 to the upper position, press it to the ring seat, block the paths of fluid movement upward through the housing 19 to form a hydraulic lock, thereby preventing the drilling plan from getting into the bearings of the roller bit.

Claims (1)

1. The device of sludge logging tools for drilling tools, comprising a housing, a duct with a check valve centrally located in the housing, an accumulation tank in the housing with outlet openings and an outlet valve blocking them and a cone VLRGOOOT- divider s located above the battery 0 five 0 L capacity with capacity that, in order to increase the efficiency of the device by reducing energy consumption and simplify the design, the exhaust valve is made in the form of an annular disk and is located in a storage tank, the check valve is made in the form of a disk with the possibility of blocking the outlets the storage tank and is equipped with rods fixed at one end on the check valve, and at the end of the valve with the possibility of closing the outlet holes at the position of the exhaust valve brother valve, and the exhaust valve is spring-loaded with two groups of springs, the first of which: has a long length, hem second, with the possibility of opening the exhaust ports by the exhaust valve under the action of the first group of springs and non-return valve under the action of the second group of prz / kick when it is not working provisions 2, the device according to claim 1, characterized in that the conical moisture separator is made with vertical through slots, so-called above the duct Fi.Z