RU106845U1 - WATER RESET WELL - Google Patents

Abstract

 1. A water discharge well containing a well plugged by a packer, a pipe insert and an inner column are located in the well, the lower end of the internal column is located at or deeper than the lower end of the pipe insert, the water-oil emulsion inlet pipe is connected to the wellhead or pipe insert, the outlet pipe water is connected to the inner column, the oil drain pipe is connected to the pipe insert or well, characterized in that the water drain pipe is connected bypass to the oil drain pipe, bypass and pat BKE after dewatering compound with bypass valves are made, and the drainage pipe before connection with bypass is equipped with autosampler. ! 2. The well for water discharge according to claim 1, characterized in that the control valves are located on the water discharge pipe to the bypass and on the oil discharge pipe. ! 3. The well for water discharge according to claim 1, characterized in that the nodes located on the surface are made fully or partially thermally insulated. ! 4. The well for water discharge according to claim 1, characterized in that the nodes located on the surface are made with the possibility of full or partial heating.

Description

The inventive utility model relates to the field of equipment for the oil industry, and in particular to devices for the early discharge of water from well products directly on the well clusters (groups) of wells in pressurized collection systems.

The closest technical solution, selected as a prototype, is a downhole water discharge installation containing a well plugged by a packer, in which the pipe insert is located and in it the inner column, the lower end of the inner column is located at or deeper than the lower end of the pipe insert, the supply pipe well production is connected to the wellhead or pipe insert, the water drain pipe is connected to the inner string, the oil drain pipe is connected to the pipe insert or to the well / Well bore water discharge tanning for well clusters / V.F.Shayakberov // Equipment and technologies for oil and gas complex. M .: VNIIOENG OJSC. 2009. No3. S.15-16 /.

The disadvantage of this device is the lack of efficiency in the quality of discharged water. Water discharged by the prototype device cannot be used directly in the reservoir pressure maintenance system (RPM) due to the high content of oil products and suspended solids. To bring the installation to the regime of the quality of the discharged water, it is necessary to direct the liquid exiting through the water outlet pipe, for example, into a special container for subsequent cleaning and / or disposal.

The problem to be solved and the expected technical result is to increase the efficiency of the device by improving the quality of the discharged water through its control and, if necessary, eliminating the ingress of inadequate water into the PPD system. Organization of regulation of the quality of discharged water is possible, for its subsequent use in the RPM system.

This problem is solved in that the water discharge well containing the well plugged by the packer has a pipe insert and an inner column in the well, the lower end of the inner column is located at or deeper than the lower end of the pipe insert, the water-oil emulsion inlet pipe is connected to the wellhead or pipe the insert, the drain pipe is connected to the inner column, the drain pipe is connected to the pipe insert or well, characterized in that the drain pipe is connected bypass to the pipe from ode oil bypass pipe and on removal of water after connecting to the bypass valves are made, and the drainage pipe before connection with bypass is equipped with autosampler. Control valves are located on the water outlet pipe to the bypass and on the oil branch pipe. The nodes located on the surface are made fully or partially thermally insulated. The nodes located on the surface are made with the possibility of full or partial heating.

Figure 1-2 schematically presents variants of the inventive device. Here:

1 - well

2 - packer

3 - pipe insert

4 - inner column

5 - pipe for supplying oil-water emulsion

6 - pipe branch oil

7 - pipe drainage

8 - valve located on the pipe for water drainage 7

9 - bypass

10 - valve located on the bypass 9

11 - sampler

12 - control valve located on the pipe for water drain 7

13 - control valve located on the pipe for oil drain 6.

The connection of the drain pipe 7 bypass 9 with the drain pipe 6 allows to discharge the discharged water with its insufficient quality, controlled by the sampler 11, into the drain pipe 6, thereby preventing it from entering the reservoir pressure maintenance system. The execution of the valves 10 and 8 on the bypass 9 and on the water discharge pipe 7 after connecting to the bypass 9 allows to discharge the discharged water through the water discharge pipe 7 to the RPM system or to the oil discharge pipe 6. Accordingly, the quality of the device is improved in quality discharged water.

The implementation in the well for the discharge of water of a number of nodes, namely: the part of the well located on the surface, the supply pipe for the oil-water emulsion, the part of the pipe insert protruding from the well on the surface, the part of the inner string protruding from the well on the surface, the oil drain pipe and the drain pipe water located on the surface, fully or partially insulated, reduces the likelihood of freezing, which improves the efficiency of the device.

The implementation in the well for water discharge of a number of nodes located on the surface, with the possibility of full or partial heating, eliminates the likelihood of their freezing, which improves the efficiency of the device.

One embodiment of a well for discharging water is shown in FIG.

The well for water discharge contains a well 1 plugged by a packer 2. In the well 1 there is a pipe insert 3 and an inner column 4 in it. A pipe for supplying an oil-water emulsion 5 is connected to a pipe insert 3. An oil drain pipe 6 is connected to the well 1. Water discharge pipe 7 with a valve 8 is connected to the inner column 4. A bypass 9 with a valve 10 connects the water drain pipe 7 to the oil drain pipe 6. On the water drain pipe 7, a sampler 11 and, possibly, a control valve are located before connecting to the bypass 9 (Fig. 1 not showing on). On the branch pipe of the oil drain 6 can also be located regulating valve (not shown in figure 1).

The well for water discharge in figure 1 works as follows. The valve 8 closes and the valve 10 opens. A water-oil emulsion enters the pipe insert 3 through the pipe for supplying the oil-water emulsion 5. After exiting the tube insert 3, the oil-water emulsion is divided into oil and water under the influence of gravitational force. Oil floats up in the annular cavity formed by the outer surface of the tube insert 3 and the inner surface of the well 1, from where it is discharged by the oil discharge pipe 6. Water flows down the borehole 1 and is discharged through the inner column 4, from where it enters the water discharge pipe 7, then into bypass 9, from where it flows into the oil discharge pipe 6. A water sample is taken in the water discharge pipe 7 before connecting to the bypass 9 from the sampler 11. The sampler 11 is located before connecting to the bypass 9 so that the water sample is taken from the LfTetanus portion discharged water flow, but not from the stagnation region. In the selected water sample, the content of oil products and suspended solids is measured. If the quality of the discharged water does not meet the geological conditions of the formation, then, for example, the emulsion separation rate in the well 1 is controlled using control valves located on the oil discharge pipes 6 and water 7. The regulation is performed until the quality of the discharged water taken by the sampler 11, will not reach the desired performance. Then the valve 10 closes and the valve 8 opens.

A second embodiment of a water discharge well is shown in FIG.

The well for water discharge contains a well 1 plugged by the packer 2. In the well 1 there is a pipe insert 3 and an inner column 4 in it. A pipe for supplying oil-water emulsion 5 is connected to the well 1. An oil drain pipe 6 is connected to the pipe insert 1. A water drain pipe 7 with a valve 8 is connected to the inner column 4. A bypass 9 with a valve 10 connects the water outlet 7 to the oil outlet 6. On the water outlet 7 before the connection to the bypass 9, a sampler 11 and, possibly, a regulating valve 12 are located ode oil 6 may regulating valve 13 is positioned.

The well for the discharge of water in figure 2 works as follows. The valve 8 closes and the valve 10 opens. A water-oil emulsion enters the well 1 through the pipe for supplying the oil-water emulsion 5 to the well 1. The oil-water emulsion entering the well 1 flows down the annular cavity formed by the inner surface of the well 1 and the outer surface of the tube insert 3. The oil-water emulsion is divided into oil and water under the influence of gravitational force. Oil floats up the inner cavity of the pipe insert 3, from where it is discharged by the oil discharge pipe 6. Water flows down the wellbore 1 and is discharged along the inner column 4, from where it enters the water discharge pipe 7, then into the bypass 9, from where it flows into the oil discharge pipe 6. Measured water quality indicators. A water sample is taken by the sampler 11 in the water outlet 7 installed prior to being connected to the bypass 9 so that a water sample is taken from the flow part of the discharge water stream, and not from the stagnant zone. In the selected water sample, the content of oil products and suspended solids is measured. If the quality of the discharged water does not satisfy the geological conditions of the formation, then, for example, the rate of separation of the emulsion in the well 1 is controlled using the control valves 12 and 13 located on the branch pipes of the water outlet 7 and oil 6. Regulation is carried out until the quality of the discharged water sampled by the sampler 11 will not reach the desired performance. Then the valve 10 closes and the valve 8 opens.

Thus, the problem of increasing the efficiency of the device by improving the quality of the discharged water by means of its control and, if necessary, eliminating the ingress of inadequate water into the PPD system, is solved. Organization of regulation of the quality of discharged water is possible, for its subsequent use in the RPM system.

Claims (4)

1. A water discharge well containing a well plugged by a packer, a pipe insert and an inner column are located in the well, the lower end of the internal column is located at or deeper than the lower end of the pipe insert, the water-oil emulsion inlet pipe is connected to the wellhead or pipe insert, the outlet pipe water is connected to the inner column, the oil drain pipe is connected to the pipe insert or well, characterized in that the water drain pipe is connected bypass to the oil drain pipe, bypass and pat BKE after dewatering compound with bypass valves are made, and the drainage pipe before connection with bypass is equipped with autosampler. 2. The well for water discharge according to claim 1, characterized in that the control valves are located on the water discharge pipe to the bypass and on the oil discharge pipe. 3. The well for water discharge according to claim 1, characterized in that the nodes located on the surface are made fully or partially thermally insulated. 4. The well for water discharge according to claim 1, characterized in that the nodes located on the surface are made with the possibility of full or partial heating.