RU184369U1 - Device for directing fluid flow - Google Patents

Abstract

The utility model relates to the oil and gas industry and can be used to regulate the flow of liquid or gas during injection into the well and production of the reservoir from the well. A device for directing fluid flow, comprising a supply pipe with radial holes, enclosed by a housing with channels communicating holes with a well space, characterized in that the radial holes are located on three levels with the same number located one above the other and evenly around the perimeter of the pipe, the channels in the housing made in the form of longitudinal through channels with the ability to communicate with the corresponding three holes, and the channels above and below are equipped with sockets, allowing it deviation in the injection fluid in the well fluid flow from the housing by not more than 30 ° to the pipe wall. The proposed design of the device for directing the flow of fluid is simple and reliable, it allows you to work in any wells, including those with low production rates and with low reservoir pressure, and flush the well. 2 Il.

Description

The utility model relates to the oil and gas industry and can be used to regulate the flow of liquid or gas during injection into the well and production of the reservoir from the well.

Known "Tool for controlling the flow of fluid" (patent RU No. 2529316, Е21В 43/12, Е21В 21/08, publ .: 09/27/2014 Byul. No. 27), including a tubular diode bushing having a diode hole; a tubular intra-channel sleeve mounted concentrically within the diode sleeve, the intra-channel sleeve having an internal channel in fluid communication with the diode bore; and a tubular outer channel sleeve, inside of which a diode sleeve is concentrically mounted, the outer channel sleeve having an outer channel in fluid communication with the diode hole; moreover, the shape of the diode hole, the position of the internal channel relative to the diode hole, and the position of the external channel relative to the diode hole determine resistance to the flow of fluid moving into the internal channel from the outer channel, and other resistance to the flow of fluid moving to the external channel from the inner channel.

The disadvantage of the tool is the complexity of manufacturing due to the presence of a large number of complex, precisely mated parts that easily fail when exposed to external influences.

The well-known filter is known (RU patent No. 2119731, Е03В 3/18, Е21В 43/08, publ .: 10.10.2002 Bull. No. 28), containing a perforated pipe and nozzles with holes, made in the form of trapezoidal grooves - slots or truncated cones fixed to the outer surface of the pipe and aligned with its holes, while the holes of the pipe and nozzles are located along a helical line, and the communication channels — the holes are made tangentially relative to the outer surface of the pipe circumferentially.

The disadvantages of the filter are narrow scope due to work only on production and the inability to work in low-production wells due to high hydraulic resistance, and the ability to work only in one interval due to the need to overlap the central channel below the inlets.

The closest in technical essence and the achieved result is the "Device for controlling the flow of fluid" (patent for PM RU №92905, Е21В 43/00, publ .: 10.04.2010 Bull. №10), coming into the production or injection well column, with In this case, it contains a housing with means for introducing and outputting a fluid flow connected to a network of channels for the flow of a liquid, while the network of channels is designed so that a large flow resistance is possible.

A disadvantage of this device is the narrow scope due to the impossibility of working in marginal wells with low reservoir pressure (below 0.8 MPa) and washing the well due to high hydraulic resistance.

The technical task of the proposed utility model is to create a simple, reliable design of the device for directing the flow of fluid, which allows working in any wells, including low-yield wells with low reservoir pressure, and also allowing flushing of the well.

The technical problem is solved by a device for directing the flow of fluid, including the inlet pipe with radial holes, enclosed by the housing with channels that connect the holes with the well space.

New is the fact that the radial holes are located on three levels with the same number of pipes located one above the other and evenly around the perimeter, the channels in the housing are made in the form of longitudinal through channels with the ability to communicate with the corresponding three holes, and the channels above and below are equipped with sockets allowing to ensure the deviation during the injection of fluid into the well flow of fluid from the body not more than 30 ° from the pipe wall.

FIG. 1 shows a device in longitudinal section.

FIG. 2 shows a section A-A; see FIG. one

A device for directing fluid flow includes a supply pipe 1 (Fig. 1) with radial holes 2, enclosed by housing 3 with channels 4, which communicate holes 2 with a well space (not shown). Radial holes 2 are located on three levels with the same number located one above the other and evenly around the perimeter of the pipe 1 (Fig. 2). Channels 4 (Fig. 1) in the housing 3 are made in the form of longitudinal through channels with the possibility of communication with the corresponding three holes 2 (one from each level). The channels 4 at the top and bottom are equipped with corresponding sockets 5 and 6, which allow to ensure the deviation of fluid flow from the housing 3 when the fluid is pumped into the well no more than 30 ° from the pipe wall 1. The number of holes 2 (Fig. 2) is on the same level and their diameter is selected taking into account the strength characteristics of the pipe 1 performance when injecting fluid into the well, in order to exclude large flow resistances.

The device works as follows.

This device for the extraction of well fluid and / or injection of fluid can be installed in the well at the pump inlet, above or below the packer (not shown), independently on a pipe string (not shown) or shank (not shown). The composition of the descent into the well of equipment to the string of pipes, the supply pipe 1 threads 7 and 8 is lowered into the well in the required interval.

For pumping a liquid fluid (water, mineral water, reagents, chemical solutions and emulsions, etc.) is pumped through a pipe string by a pump (not shown) from the wellhead, which is directed from the supply pipe through the openings 2 and channels 4 of the housing 3 to well. The nozzles 5 and 6 regulate the direction of fluid flow: no more than 30 ° from the wall of the supply pipe 1.

When selecting a well fluid through the channels 4 (Fig. 1 and 2) of the housing 3 and the openings 2 of the pipe 1, they enter the inside of the pipe string and then, with a pump or swab, rise to the surface without exerting great hydraulic resistance.

Three levels of holes 2 (Fig. 1) provide good performance when pumping fluid, minimize the possibility of clogging when selecting well fluid (determined experimentally). Through channels 4 in the housing 3 exclude accumulation in them during the selection of sludge, sand, etc. The nozzles 5 and 6 provide the direction of flow of the injected liquid fluid into the well not more than 30 ° from the pipe wall 1 (selected in a practical way), excluding the opening or violation of the integrity of the casing string in the well (not shown). At the same time, this design of channels 4 and holes 2 has a low hydraulic resistance to the flow of well fluid, which allows working in low-yield wells with low reservoir pressure (below 0.8 MPa).

The proposed design of the device for directing the flow of fluid is simple and reliable, it allows you to work in any wells, including those with low production rates and with low reservoir pressure, and flush the well.

Claims (1)

A device for directing fluid flow, comprising a supply pipe with radial holes, enclosed by a housing with channels communicating holes with a well space, characterized in that the radial holes are located on three levels with the same number located one above the other and evenly around the perimeter of the pipe, the channels in the housing made in the form of longitudinal through channels with the ability to communicate with the corresponding three holes, and the channels above and below are equipped with sockets, allowing it deviation in the injection fluid in the well fluid flow from the housing by not more than 30 ° to the pipe wall.