Functional insert for well stream plant

FIELD: oil and gas extractive industry.

SUBSTANCE: device has body placed in body of stream pump and has locking valve and axial channel for logging cable with fixed logging device. Device also has discharge valve. Device body has ports in middle portion, which connect middle hollow portion of device to displacement chamber for stream pump. In upper and lower portions of body of device upper and lower compactors are placed, limited by support elements on each side of the latter, respectively. Locking valve is mounted in lower portion of device and mated with inner space of tubing string and logging device. Axial channels of valves are eccentric and parallel to first channel of device, while discharge valve is provided with rod with its end prominent relatively to body of device.

EFFECT: broader functional capabilities, higher reliability.

4 dwg

 

The invention relates to an inkjet technique, namely the functional inserts into the pump well installation for the study of productive layers of the bottomhole zone, and is used in the oil and gas industry.

Known functional inserting a downhole jet unit for test and development wells completed with the possibility of installing it logging device, mounted on wireline, see Russian Federation patent No. 2190779 in class. F 04 F 5/02, 5/44, publ. 2002

To remove this plug from the pump device is required, this complicates the installation of this insert.

Known functional insert, for example, for account recovery curves of reservoir pressure, downhole jet unit for test and development wells having an axial channel, combined with the axial channel of the jet pump, see Russian Federation patent No. 2190781 in class. F 04 F 5/02, 5/44, publ. 2002

The functionality of this plug is limited.

Known functional insert pump and injection well installation with shut-off valve, see Russian Federation patent No. 2107842 in class. F 04 F 5/54, publ. 1998

In this setting, is not ensured rapid transition from one mode of study to another.

Known functional inserting a downhole jet unit, steriade the packer, the jet pump body, active and passive nozzle, the mixing chamber and mounted coaxially on the column tubing consisting of a body placed in the pump housing, bearing, bearing seals, equipped with a shut-off valve and an axial channel for logging cable with fixed logging device, see the patent of Russian Federation №2129672 in class. F 04 F 5/02, publ. 1999

This solution is taken as the prototype of the present invention.

However, it has drawbacks.

In the installation of the prototype separation podvecerni and nadakarni cavities provides shutoff valve insert, and with the repetition of technological processes and the transition from one process to another process for pressure equalization takes time until the reservoir will equalize the pressure necessary or failure of the packer with depressurization of the annulus, the absence of controlled mechanism of the vacuum in the cavities of the pump and in podvecerni zone allows quick impact on the reservoir, continue removing measurements or to repeat a process, also, remove the insert is difficult hydrostatic liquid column above the insert, it worsens the plant and reduces its functionality.

The present invention is based on a solution that allows you to extend the capabilities of the installation, to enhance the reliability of insertion, to facilitate removing it from the pump.

According to the invention this problem is solved due to the fact that the functional insert downhole jet unit contains packer, the jet pump having a housing, active and passive nozzle, the mixing chamber and mounted coaxially on the tubing pipe, consists of a body placed in the pump housing, bearing, bearing seals, equipped with a shut-off valve and an axial channel for logging cable with fixed logging instrument; insert contains additional discharge valve, and the housing has a window in the middle part, which reported average hollow portion of the insert with the mixing chamber, the upper and lower parts of the body is placed upper and lower seals, limited support elements on each side of the latter, respectively, with the shutoff valve is installed at the bottom of the insert and connected with the mixing chamber and sealing the cavity, and the discharge valve passes through the upper, middle and lower parts of the insert and connected with the inner space of the column tubing and wireline device, furthermore, the axial channels valves eccentric and parallel to the axial channel of the insert, and the discharge valve provided with a stem projecting end relative to the housing insert.

The applicant is Yavlena sources, contains information about technical solutions, identical to the present invention, which allows to make a conclusion about its compliance with the criterion of “novelty”.

Due to the implementation of the distinguishing features of the invention (in conjunction with the features indicated in the restrictive part of the formula) achieved an important new properties object.

The setup box of the discharge valve extends the functionality of the device.

Running in the middle part of the casing window and message her with the mixing chamber of the pump ensures reliable operation of the shutoff valve insert.

Placement in the upper and lower parts of the body insert seal and limit their support elements improves the reliability of the insert.

Install shutoff valve at the bottom of the insert and its interaction with the mixing chamber of the pump and packer cavity and install the discharge valve in the upper, middle and lower parts of the insert and its interaction with the internal space of the column tubing and packer cavity extends the functionality of the installation.

The eccentric location of the axial channels of the valves when the parallelism of their axes channel insert provides the necessary functionality to insert and increases the reliability of its work with the alternation of processes studies of the formation.

The nalitch the e bit in the valve stem, having a protruding end, and the last interaction with the logging device performs a quick vacuum in the device and permits free removal of the insert from the pump.

The applicant is not aware of any publication that would contain information about the impact of the distinctive features of invention technical result achieved. In this regard, according to the applicant, it is possible to draw a conclusion on the conformity of the proposed technical solution the criterion of “inventive step”.

The invention is illustrated by drawings, which shows:

figure 1 is a downhole jet set /cut/,

figure 2 - functional insert /cut/,

figure 3 - section a-a in figure 1,

figure 4 - a view B figure 2.

The functional insert is installed in the pump casing downhole jet unit.

Downhole jet unit contains the column tubing 1, the packer 2, the jet pump 3, case 4 (pump 3), the active nozzle 5 (pump 3), passive nozzle 6 (pump 3), the mixing chamber 7 (pump 3).

Functional insert includes a housing 8, the upper part 9 (case 8), the lower part 10 (case 8), the middle part 11 (case 8), box 12 (in the middle part 11), the upper seal 13, the upper supporting elements 14, the bottom seal 15, the lower supporting elements 16, the check valve 17, the shutter 18 (valve 17), the axial channel 19 of the valve 17), the discharge valve 20, the shutter 21 (valve 20), the axial channel 22 (valve 20), the stem 23 and the valve 20), the axial channel 24, the logging cable 25, the logging device 26.

Functional insert has a body 8 with a window 12 in the middle part 11. In the top 9 and bottom 10 of the casing 8 posted by seals the top 13 and bottom 15, respectively. The seals 13 and 14 are limited to upper and lower sides (each) anchor elements 14 and 16, respectively.

The insert provided with a stop 17 and bit 20 valves, each of which imeye valves 18 and 21 and the axial channels 19 and 22, respectively. The discharge valve 14 further comprises a rod 23.

Insert, for example, for recording curves of reservoir pressure has an axial channel 24 for logging cable 25, which is fixed to the logging device 26, such as the active gauge.

Axial channels 19 and 22 of the eccentric and parallel to the axial channel 24 is inserted.

Downhole jet system includes a packer 2, the jet pump 3, which is mounted coaxially on the column tubing 1.

The jet pump 3 has a housing 4, 5 active and passive 6 nozzle, the mixing chamber 7. The insert is placed in the case 4 of the pump 3.

Shut-off valve 17 of the insert communicates with the mixing chamber 7 of the pump 3 and packer cavity of the packer 2. The discharge valve 20 communicates with the inner space of the columns of a pump and the compressor is the main pipe 1 and the sealing cavity of the packer 2, and the speaker end (relative to the body 8 of the insert) stem 23 of the valve 20 is associated with a logging device 26.

The operation of insertion is carried out as follows.

The insert down into the pump 3 to the cable 25. After the supply of operating fluid under pressure through the pipe 1 in the area of the nozzles 5 and 6 discharge occurs, the shutter 18 shut-off valve 17 is lifted, and the fluid in the axial channel 19 is pumped from the packer 2. Upon termination of the fluid gate 18 closes the penetration hole and below the packer 2 is a discharge which flow from the reservoir is removed. The logging device 26 transmits the measured parameters, such as pressure gauge writes curves restore pressure.

If necessary, create additional depression in the reservoir, depending on the indications of active logging device 26. Equalization of pressure in nadakarni and podvecerni cavities is carried out using the discharge valve 20. The opening of the valve 20 is carried out by the tension of the cable 25, while the logging device 26 presses the protruding end of the rod 23, which raises the shutter 21 and the axial channel 22 compares the pressure above the packer 2 and below. Paste using the hoist cable 25 is easily removed from the pump 3.

When reading from active logging device 26 when the research provides opportunities is to influence the process of creating depressions on the layer in the right amount.

The proposed functional insert can be manufactured, which is confirmed by tests of an experimental batch, and this causes, according to the applicant, in accordance with the criterion of “industrial applicability”.

The proposed functional inserting a downhole jet unit allows you to:

- to extend the functionality of the insert due to the installation of the discharge valve and placing it in the upper, middle and lower parts of the insert with the possibility of communication with the internal space of the column tubing and packer cavity and through the installation of a shutoff valve at the bottom of the insert with the possibility of its interaction with the mixing chamber of the pump and packer cavity;

- to provide the necessary functionality to insert and to improve the reliability of its work with the alternation of processes studies of the reservoir due to the eccentric location of the axial channels of the valves when the parallelism of their axes to channel inserts;

to increase the reliability of the insert due to run in the middle part of the casing of the window and messages average hollow part with the mixing chamber of the pump and by placing in the upper and lower parts of the body insert seal and limiting their support elements;

to facilitate removal of the insert from the pump due to the presence bit in the valve stem,the interaction of its protruding end with a logging device and a fast rarefaction pressure in the device.

Functional inserting a downhole jet unit containing the packer, the jet pump having a housing, active and passive nozzle, the mixing chamber and mounted coaxially on the column tubing consisting of a body placed in the pump housing, bearing, bearing seals, equipped with a shut-off valve and an axial channel for logging cable with fixed logging device, characterized in that the insert contains an additional bit valve, and the housing has a window in the middle part, which reported average hollow portion of the insert with the mixing chamber, the upper and lower housing parts are placed top and bottom seals, limited support elements on each side of the latter, respectively, with the shutoff valve is installed at the bottom of the insert and connected with the mixing chamber and sealing the cavity, and the discharge valve passes through the upper, middle and lower parts of the insert and connected with the inner space of the column tubing and wireline device, furthermore, the axial channels valves eccentric and parallel to the axial channel of the insert, and the discharge valve provided with a stem projecting end relative to the housing insert.



 

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