SU763583A1 - Device for installation of pressure accumulator for wells - Google Patents

Description

one

The invention relates to the field of oil and gas production and is intended to install a pressure accumulator for wells, against the perforated part of the column, when conducting a thermogas and chemical action on the filter zone of the formation regardless of its location from the bottom of the well.

The devices used for this purpose are known, known as explosive packers of type VP 1.

The above-mentioned device designs used to set the charge pressure accumulator in the well require a special voyage to the perforation of the column.

The equipping of these packers is carried out in strict compliance with the rules for explosion-proof operations.

It is also known to install a pressure accumulator in a well, which includes a unit for accommodating a pressure accumulator, a cable, a clamping element mounted on the rod, and rams 2.

The drawback of the device used for the installation of a pressure accumulator is the complexity of drilling. When drilling overlapping elements

it is possible to free the well from it, which leads to the loss of the trunk located below the installation location of the packer. The device is difficult and time-consuming to manufacture. This will NOT allow the use of the treatment of the J formation zone of the reservoir by the charge of the pressure accumulator.

The aim of the invention is to simplify

design, improving its reliability

work by fixing the battery

anywhere in the production string

10 regardless of the size of the sump.

The goal is achieved by the fact that the device is provided with a flange, a lid and a spring-loaded unit for accommodating a pressure accumulator with a washer, the lid being made with a groove to accommodate the slats that are rigidly connected with the overlapping element and hingedly with the flange and the overlapping element is designed as an aperture.

FIG. 1 shows a device, a type of super 20; in fig. 2 shows section A-A in FIG. one.

The device consists of the following main parts: assembly 1 for setting a charge of a pressure accumulator, having two opposite grooves and a through hole through which the cable 2 passes, assembly 1 is connected to a shaped flange 3, tube 4, which for this purpose has sides of the thread. The shaped flange 3 has three grooves arranged at an angle of 120 ° for attaching the legs 5, dies swinging freely on the axes 6, and there are cutting the dies 7 at the ends of the legs. A soft diaphragm 8 is attached to the legs 5, which is set to the diameter of the column. In the center, the diaphragm has an opening through which the rod-pusher 9 passes. In the transport position, the tabs 5 and the diaphragm 8 are folded and fitted with a safety cover 10, which has a notch 11 for stirring the tabs 5 and a central opening for passing the rod-roller 9 The cover 10 has shaped slots 12 for fastening the additional cable 13. The additional cable 13 serves to hold the safety cover 10 in the transport position. The rod cap 9 passes through the safety cover 10, the shaped flange 3 and the tube 4. At one end there is a thread for the nut 14, and at the other end there is a hole for the locking pin 15, which serves to bring the device into working condition. The push rod 9 in its middle part has an opening for the stud 16, which is inserted into the hole through the grooves 17 diametrically cut through the tube 4, and serves to transfer the force of the spring 18 to the rod stock 9. The washer 19 is spring-loaded relative to the node I for placing the charge pressure accumulator.

The device operates as follows: In the transport position, the device is assembled in the workshop. The spring 18 is compressed. To lock the spring 18, a pin 15 is inserted in the upper part of the push rod 9. The tabs 5 and the diaphragm 8 are folded and the safety cover 10 is put on them. The safety cover 10 is fixed by a nut 14.

In this state, the device is transported to the well, suspended from cable 2, installed on the device one charge of the pressure accumulator, and additional cable 13 is fixed on the safety cover 10 by inserting its ends into the figured cutouts. The locking pin 15 is pulled out of the push rod 9, the nut 14 is turned away, the entire charge of the pressure accumulator is collected and left into the well to a predetermined depth

At the moment of ignition of the charge, the main and auxiliary cables burn out. The push rod 9 under the action of the spring 18

resets the safety cover 1. 10, thereby releasing the tabs 5 and the diaphragm 8. The washer 19 under the action of the spring 18 strikes the shoulders of the tabs 5, thereby contributing to their expansion. Opened aperture 8, overlapping annular space

under the action of a counter flow of fluid, presses the engaging dies 7 to the pipes. The plates 7, under the action of a pair of forces from the weight of the ADF charge, directed from top to bottom, and against the force of the pressure of the oncoming liquid flow, bottom-up, are pressed against the pipe string. In this state, the device is before the battery charge battery is completely burned.

The device is made of a low melting material, whereby the connecting nodes of the device are melted. In case of non-burning parts of the device, it can be destroyed by unloading the column n / a pipe by 0.3-0.5 tons. Destroyed small parts will fall to the bottom of the well.

Claims (2)

1. Device for installing a pressure accumulator for wells, including a unit to accommodate the pressure accumulator, a cable mounted on the brush overlapping element and dies, characterized in that, in order to simplify the design and increase its reliability, the device is equipped with a flange, a lid and spring-loaded relative to the assembly for accommodating the pressure accumulator with a washer, with a groove to accommodate the raincoats, which are rigidly connected with the overlapping element and pivotally with the flange and installed with the possibility of interaction with the washer. 2. A device according to claim 1, characterized in that the overlapping element is designed as a diaphragm. Sources of information taken into account in the examination 1. Technical description and operating instructions of VP-88-OOOTO. Krasnodar, 1973. 2. US patent number 3630284, cl. 166-299, pub. 1971.