RU90487U1 - MANIFOLD BLOCK FOR WASHING A SAND BLOCK AND DEVELOPING A GAS WELL IN THE CONDITIONS OF AN ANOMALOUS LOW VAST PRESSURE - Google Patents

Abstract

Manifold block for washing a sand plug and developing a gas well under conditions of abnormally low reservoir pressure, containing an ejector made in the form of a tee with two input and one discharge branches connected to it, two bypass connections connecting each input branch pipe to the output branch pipe, bypassing the ejector, while the flow outlet is equipped with two branches.

Description

The utility model relates to the oil and gas industry, namely, devices for washing sand plugs and developing gas wells under conditions of abnormally low reservoir pressures, in particular, for regulating the flow directions of gas, gas-liquid, and liquid flows into the well.

From the experience of washing sand plugs in gas wells and their subsequent development, it is known that in the process of carrying out these works it is repeatedly necessary to re-bind the mouth in order to supply technological solutions periodically to the pipe and then annular spaces of the wells being repaired. This entails inconvenience in work, an increase in non-productive time costs and an increase in the cost of repairs [Pat.2235868 of the Russian Federation. Publ. 09/10/04, Bull. No. 25].

Known manifold block containing an ejector made in the form of a tee, with two input and one output bends connected to it [Pat. Publ. 09/10/04, Bull. No. 25].

The disadvantage of this manifold block is the inability to control the direction of movement of gas and liquid in the process of washing a sand plug and subsequent development of a gas well without re-linking the mouth of the well being repaired.

The challenge in creating a utility model is to develop a reliable device that facilitates flushing sand plugs and subsequent development of a gas well.

The achieved technical result, which is obtained as a result of creating a utility model, consists in the possibility of regulating the direction of movement of gas and liquid in the process of washing a sand plug and subsequent development of a gas well.

The task and technical result are achieved by the fact that the inventive manifold block for washing sand plugs and developing a gas well under conditions of abnormally low reservoir pressure contains an ejector made in the form of a tee, with two input and one discharge branches connected to it, two bypass connections, connecting each individually input branch with a discharge branch, bypassing the ejector, while the discharge branch is equipped with two branches.

The claimed implementation of the ejector, the presence of bypass connections, providing a separate connection of input taps with a flow, having branches, allows to carry out technological processes without re-dressing the mouth, ensures reliable operation, circulating the flow of technological processes and reducing the duration of repair work at the well.

In FIG. The inventive manifold block is shown.

The manifold block consists of an ejector 1, two input 2, 3 and one flush 4 taps, two bypass connections 5, 6 and two branches 7, 8.

The ejector 1 is a tee, to the taps of which are connected two input 2, 3 and one flap 4 taps, equipped with shut-off valves 9, each connecting separately the input taps 2 and 3 with the flap 4, bypassing the ejector 1.

Input taps 2, 3 by means of bypass connections 5, 6 are connected to the discharge tap 4, bypassing the ejector 1. Bypass connections 5, 6 are equipped with similar shut-off valves 9.

The flap branch 4 is equipped with two branches 7, 8 with similar shut-off valves 9 placed on them.

The device operates as follows.

In the process of washing the sand plug and the subsequent development of a gas well, high pressure gas - gas VD is fed through the inlet 2 to the ejector 1. At the same time, a foaming liquid is supplied to the ejector 1 through the inlet 3 - POZH. As a result of the mixing of the gas VD and POG, an aerated foam-forming liquid is formed - APOZ. Obtained on the ejector 1 APOZH is sent through the flow outlet 4 and branch 7 into the pipe space of the well being repaired to remove the sand plug.

If there is a cemented sand plug in the well being repaired, to destroy it, direct through the bypass connection 6 and branch 7 into the pipe space of the well being repaired a clean, non-aerated, RLP, bypassing the ejector 1.

To facilitate the call of inflow from the reservoir with the aim of displacing the APOZ well into the pipe space from the well being repaired, bypass connection 5 and branch 7 direct HP gas bypassing the ejector 1.

To remove the killing fluid from the annular space of the well being repaired and to facilitate the call of the inflow from the reservoir, the APOZ from the ejector 1 is sent to the annular space through branch 8.

An example of the implementation of the claimed device at well No. 114 of the Vyngapurovsky field. Initially, a cemented sand plug was destroyed in a well plugged by a killing fluid by supplying a coolant through bypass connection 6, a flow outlet 4 and branch 7. After that, a sand plug was washed through a flow outlet 4 and branch 7 into the pipe space of a repaired APOZ well obtained by mixing on an ejector 1 gas VD and POG, which were supplied respectively through the input taps 2 and 3.

After washing the sand plug and removing its remnants, the inflow was called by reducing the back pressure on the reservoir by displacing the killing fluid located in the well being repaired, APOF supplied to the pipe space of the repaired well through branch 7.

To facilitate the call of the inflow from the reservoir, the injected into the pipe space of the repaired well АОЖ was displaced by the VD gas supplied through the bypass connection 5, the discharge branch 4 and the branch 7, bypassing the ejector 1, with the simultaneous supply of high pressure gas to the annular space of the repaired well supplied through bypass connection 5, flip branch 4 and branch 8, bypassing the ejector 1.

The inventive device is indispensable for washing sand plugs and well development. It allows you to adjust the direction of movement of gas, POG and APOZ without stopping technological operations for re-lining the mouth of the well being repaired, without interrupting the production lines and pipelines with their mandatory crimping.

Claims (1)

Manifold block for washing a sand plug and developing a gas well under conditions of abnormally low reservoir pressure, containing an ejector made in the form of a tee with two input and one discharge branches connected to it, two bypass connections connecting each input branch pipe to the output branch pipe, bypassing the ejector, while the flow outlet is equipped with two branches.