SU933942A1

SU933942A1 - Device for setting bridge in well

Info

Publication number: SU933942A1
Application number: SU802985088A
Authority: SU
Inventors: Григорий Алексеевич Фисенко; Иван Павлович Пустовойтенко
Original assignee: Полтавское отделение Украинского научно-исследовательского геологоразведочного института
Priority date: 1980-09-16
Filing date: 1980-09-16
Publication date: 1982-06-07

Description

(54) УСТРОЙСТВО ДЛЯ УСТАНОВКИ МОСТА В СКВАЖИНЕ(54) DEVICE FOR INSTALLATION OF A BRIDGE IN A WELL

1one

Изобретение относитс к бурению скважин , в частности к устройствам дл установки в них разобщающих мостов.The invention relates to the drilling of wells, in particular, to devices for installing uncoupling bridges.

Известно устройство дл установки моста в скважине, включающее контейнер, взрывпатрон и оболочку в виде сложенного зонта, помещенного в бащмаке контейнера 1.A device for installing a borehole in a well is known, comprising a container, a blasting device and a shell in the form of a folded umbrella placed in the container of the container 1.

Недостатком устройства вл етс невозможность установки моста в открытом стволе с больщой каверзностью.The disadvantage of the device is the impossibility of installing a bridge in an open trunk with a great toughness.

Наиболее близким к изобретению вл етс устройство дл установки моста в скважине , содержащее корпус, контейнер, полую эластичную оболочку, заполненную цементным раствором и помещенную в нижнюю часть контейнера, обратный клапан и источник давлени 2.Closest to the invention is a device for installing a bridge in a well, comprising a housing, a container, a hollow elastic sheath filled with cement mortar and placed in the lower part of the container, a check valve and a pressure source 2.

Однако устройство имеет невысокую надежность установки моста из-за трудности выдавливани из контейнера эластичной оболочки , а также невысокие усили распора обвлочки о стенки скважины.However, the device has a low reliability of installation of the bridge due to the difficulty of squeezing the elastic sheath out of the container, as well as the low efforts of spreading the wrapping around the borehole walls.

-Цель изобретени - повыщение надежности установки моста.- The purpose of the invention is to increase the reliability of the bridge installation.

Поставленна цель достигаетс тем, что устройство снабжено полым патрубкбм сThe goal is achieved by the fact that the device is equipped with a hollow pipe with

радиальными отверсти ми, в зоне которых установлен обратный клапан, и механизмом фиксации патрубка к контейнеру, причем полый патрубок установлен по оси эластичной оболочки так, что он сообщает полость 5 контейнера, с полостью эластичной оболочки в рабочем положении устройства.radial openings, in the zone of which a check valve is installed, and a mechanism for fixing the nozzle to the container, the hollow nozzle being installed along the axis of the elastic sheath so that it communicates the cavity 5 of the container, with the elastic sheath in the working position of the device.

При этом источник давлени выполнен в виде порщн , помещенного под эластичной оболочкой, причем надпорщнева часть 10 порщн выполнена с возможностью ее сообщени с полостью скважины а подпорщнева часть сообщена с полостью патрубка.At the same time, the pressure source is made in the form of a pressure plate placed under the elastic shell, the above-porshne part 10 of the pressure body is made with the possibility of its communication with the cavity of the well, and the subsharrow part is communicated with the cavity of the nozzle.

Причем механизм фиксации патрубка к контейнеру выполнен в виде подпружиненных поворотных защелок, установленных на Moreover, the mechanism of fixing the nozzle to the container is made in the form of spring-loaded swivel latches installed on

15 контейнере, и плавающего порщн , взаимодействующего с поворотными защелками.15 container, and a floating box, interacting with swivel latches.

На фиг. 1 изображено устройство дл установки моста в скважине; на фиг. 2 - сечение А-А на фиг. 1; на фиг. 3 - 20 сечение Б-Б ни фиг. 1.FIG. 1 shows a device for installing a bridge in a well; in fig. 2 is a section A-A in FIG. one; in fig. 3 - 20 section BB, neither FIG. one.

Claims

The cement bridge device comprises an instrument body 1, inside of which an electromagnet 2 with a pole 3 and a valve 4 with a spring 5 are placed. The valve body 6 containing channels 7 is hermetically fastened at the top with the device body 1, and at the bottom with a variable-section cylinder 8 a piston 9 with a spring 10 rigidly connected to the body of the yolon 11, containing a piston 13, swivel latches 14 with a spring 15, placed in the slots 16 on the axis x 17 of the sub 18. The latches 14 hold the hollow nozzle 19 of variable cross section, which is hermetically sealed ITS floor elastic envelope 20 with a dispensing orifice 21 and check valve 22 with spring 23 and cap 24. The check valve closes the radial openings 19. The nozzle device 25 operates as follows. Pour cement mortar through the filling opening 21 into the elastic shell 20 until it is completely filled. The shell 20 is connected to the mechanical part of the device. Through the filling windows 12, the cement mortar is poured into the shell 11 until it is completely filled. Connect the device to the logging cable and lower the device to the place of installation of the cement bridge using the trip unit. Include a source of direct current. In this case, the electromagnet 2 pulls the spool 4 by the pole 3 and opens the holes through which the well fluid enters the above-crush part of the variable cylinder 8 and shifts the piston 9 downwards, which creates an overpressure in the shell 11, under the action of which the cement mortar from the shelf 11 through the hollow port 19 and the check valve 22 enters the interior of the elastic shell 20 through the openings 25. Under the action of an additional portion of cement mortar, the elastic shell 20 changes its shape in accordance with the contours of the borehole wall It remains in a compressed state until complete solidification of cement slurry. At the same time, the cement mortar in the container presses against the floating piston 13, which, when the stiffness of the spring 15 exceeds the excess pressure, deploys the latches 14 and releases the pipe 19 from engagement. The device is removed to the surface and after cleaning and washing it is ready to work again. The effectiveness of the use of the device lies in the reliability of the installation of the elastic element in the well and the increase of its strength spreading against the walls of the well. Claim 1. A device for installing a bridge in a well, comprising a housing, a container, a hollow elastic shell filled with cement mortar and placed in the lower part of the container, a check valve and a pressure source, characterized in that it is equipped with a hollow pipe with radial holes, in the zone of which a check valve is installed, and a mechanism for fixing the pipe to the container, the hollow pipe being installed along the axis of the elastic shell so that it communicates the cavity to the container ra with a cavity elastic in the working position of the device. 2. A device according to claim 1, characterized in that the pressure source is made in the form of a piston placed under an elastic casing, wherein the piston part is adapted to communicate with the wellbore, and the piston part communicates with the nozzle cavity. 3. The device according to claim 1, characterized in that the mechanism for fixing the nozzle to the container is made in the form of spring-loaded surface latches mounted on the container, h of the floating surface that interacts with the rotary latches. Sources of information taken into account in the examination 1. Relay and blasting in wells. M., “Nedra, 1972, p. 137-139.

2. USSR author's certificate for application number 2905394/03, cl. Е 21 В 33/12, 02.04.80.