SU1530779A1 - Method and apparatus for forming wells - Google Patents

Abstract

The invention relates to mining and is intended for the construction of large diameter wells. The goal is to reduce labor costs. To do this, the wellhead is sealed and, during the dimple process, a flexible shell is fastened with the end turned out. At the same time, an adhesive is fed into the annular cavity of the shell simultaneously with the well bore. After the end of the dimple, the shell is compressed in the direction from the bottom to the mouth and from the center to the walls of the well with the pressure of the cleaning agent. Armature is introduced into the annular cavity of the shell simultaneously with the adhesive. In order to implement this method, a sealed chamber 1 with a drum mounted on the hollow shaft is fixed to the wellhead at the wellhead. With the cavity of the inverted end of the flexible shell 4 lining mechanism 12 of the supply of adhesive. One end of the shell 4 is connected to the chamber 1 to form a hole for the passage of the shell, the other end together with the communications is fixed on the drum 3. Under the action of pressure, the shell 4 is inflated and compressed in the direction from the mouth to the center and from the walls to the borehole walls. In this case, the adhesive in the shell 4 is pressed against the walls of the well and as a result of this, permanent support for the well is formed from the adhesive and reinforcement. 2 sec. and 4 hp f-ly, 4 ill.

Description

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give adhesive. After the end of the recess, the casing is compressed in the direction from the bottom to the mouth and from the center to the borehole walls by the pressure of the cleaning agent. The reinforcement is introduced into the annular cavity of the shell at the same time with the adhesive. In order to implement this method, a sealed well 1 with a drum mounted inside it on a hollow shaft is fixed at the wellhead. With the cavity of the inverted end of the flexible shell 4 lining mechanism 12 of the supply of adhesive. One end

shell 4 is connected to chamber 1 to form an opening for the shell; the other end, along with communications, is fixed on drum 3. Under the action of pressure, shell 4 is inflated and compressed in the direction from the inlet to the mouth and from the center to the borehole walls. In this case, the adhesive in the shell 4 is pressed against the walls of the well and as a result of this, permanent support for the well is formed from the adhesive and reinforcement. 2 s. And 4 z. P. f-ly, 4 ill.

The invention relates to mining, namely the erection of large diameter wells.

The aim of the invention is to reduce labor costs.

Figure 1 shows a device for the formation of wells, a general view; figure 2 - the same, with reinforcement of metal tapes; fig.Z - the same, with a roll coil; Fig. 4 is the same with a roll coil and a rotation mechanism.

The device consists of a sealed chamber 1, in which a drum 3 with a wound is mounted on the hollow shaft 2. On it a flexible shell 4, one end of which is turned outwards and fixed in a sealed chamber 1 with the formation of an opening for the passage of shell 4. In front of the shell 4 there is an operating member 5, which by means of communications in the form of hoses 6 and 7 and electrical communication 8 passing through the inner the rim cavity 4 is connected respectively to the cleaning agent supply system 9, the pulp barrel system 10 and the energy source 11. The hermetic chamber 1 with the cavity of the inverted end of the shell 4 is in communication with the adhesive supply mechanism 12. In the hermetic chamber 1, in the cavity of the inverted end of the shell 4, there is also installed an armature delivery mechanism in the form of coils 13 with cables or tapes 14, which are connected to the ring 15, which acts as a load. The coil 13 can be made in the form of a roll, the second is installed coaxially with the sheath A. The inner cavity of the sheath 4 is connected to the main, through which the circulator 0 is made.

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qi cleansing agent. The valve feed mechanism is rotatably mounted about a vertical axis.

The method of forming wells is carried out as follows.

Before the beginning of the dimple of the well working body 5, the camera 1 is installed at the wellhead and sealed. Then, by means of power communications 8, energy is supplied (electricity, energy of compressed gas, liquid) to the working body 5, which is dredged. At the same time, from the delivery system 9, through the hose 6, a cleaning agent enters the face under increased pressure, under the action of which the soil being developed along the hose 7 is removed from the well. Simultaneously with the deepening of the well, an adhesive, for example, grouting cement, is fed into the hermetic chamber 1 and the annular cavity of the shell 4 formed by its end turned outward. Under the action of the weight of the adhesive, the flexible sheath 4 is lowered through the hole in its inverted end into the well, thus playing the role of temporary support. Together with the shell 4, as it is unwound from the drum 3, hoses 6 and 7 and power communications 8, as well as cables or tapes 14, together with the ring 15, unwound from the reels 13 of the valve feeding mechanism, are lowered into the well. At the end of the dredging of the well, the working body 5 is stopped and the system 9 of the supply of the cleaning agent entirely inside the shell 4 of the shell 4 increases the pressure of the cleaning agent. Under the action of this pressure, the shell 4 is inflated and compressed in the direction from the bottom to

from the center to the walls of the well. At the same time, the adhesive placed in the annular cavity of the inverted end of the shell 4 is pressed against the walls of the well, as a result of which a permanent support for the well is formed from the adhesive and reinforcement 14. In addition, it is possible, after the working member is stopped, to start rotating the mechanism for feeding the reinforcement 13, twisting the strips 14, which form spiral rings with overlapping one relative to the other.

Claims (6)

1. A method of forming wells, which includes a hole dimple using a cleaning agent and parallel with hole deepening of the borehole walls, characterized in that, in order to reduce labor costs, the wellhead is sealed, and the dredging process is produced by a flexible shell with an inverted outward At the same time, an end is supplied to the annular cavity of the shell simultaneously with the well deepening, and after the end of the hollow the sheath is compressed in the direction from the inlet to the mouth and from the center to the walls of the well by the pressure of the cleaning agent. 2. Method POP.1, characterized in that reinforcement is introduced into the annular cavity of the shell simultaneously with the adhesive. 0779 ten 15 -20 25 thirty 35 3. A device for the formation of wells, including lining and a working body installed under the end of the lining and connected with internal lining communications with an energy source, supply systems of cleaning agent and pulp removal, characterized in that it is equipped with a sealed chamber fixed to the wellhead with a drum mounted inside it on the hollow shaft and an adhesive supply mechanism, and the support is made in the form of a flexible shell, one end of which is connected with a sealed chamber to form a hole for the passage of the shell, and the other end together with the communications is attached to the drum, with the adhesive supply mechanism communicating with the cavity of the inverted end. shell. 4. A pop-up device, characterized in that it is provided with an armature feeding mechanism, which is installed in the cavity of the inverted end of the casing and is made in the form of cords, carcasses with cables or tapes with a ring connected to them. 5. A device according to claim 4, characterized in that the ribbon roll is executed in the form of a roll and is mounted coaxially with the shell. 6. Device popp. 4 and 5, characterized in that the reinforcement feed mechanism is mounted rotatably around a vertical axis. hy / ///// U // 7 / U Fu8.t Compiled by L.Cherepenkenna Editor I.Shulla Tehred M.DidykKorrektorE.Lonchakova Order 7875/34 Circulation 449 VNSHSHI of the State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035 Iroizvsshsgnenno-ichdltelskiy combitgate Patent, Uzhgorod, st. Gagarin, 101 Subscription