CN213016296U

CN213016296U - Oil pumping pipe sleeve gas forced extraction device

Info

Publication number: CN213016296U
Application number: CN202021042865.1U
Authority: CN
Inventors: 金军涛; 勉佐国
Original assignee: Ningxia Changqing Petroleum Machinery Manufacturing Co ltd
Current assignee: Ningxia Changqing Petroleum Machinery Manufacturing Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-04-20
Anticipated expiration: 2030-06-09

Abstract

The utility model discloses a pipe covering gas forced extraction device of an oil pumping pipe, which comprises a preseparator, a high-pressure separator, a low-pressure separator, a precooler and a vortex separation pipe, wherein the gas inlet end, the top end and the bottom end of the preseparator are respectively communicated with a first gas inlet pipe, a first gas outlet pipe and a first liquid outlet pipe; the gas inlet end, the gas outlet end and the bottom end of the high-pressure separator are respectively communicated with a second gas inlet pipe, a second gas outlet pipe and a second liquid outlet pipe; the liquid inlet end, the bottom end and the gas outlet end of the low-pressure separator are respectively communicated with a first liquid inlet pipe, a third liquid outlet pipe and a third gas outlet pipe; and the input end, the bottom end and the output end of the vortex separation pipe are respectively communicated with the second air outlet pipe, the third air outlet pipe and the first separation pipe. The utility model discloses a preseparator, high pressure separator carry out preliminary gas-liquid separation and secondary gas-liquid separation to mist, carry out gas-liquid separation once more through vortex separator tube, constitute the return circuit through low pressure separator and precooler and above-mentioned structure, can ingenious realization circulation separation.

Description

Oil pumping pipe sleeve gas forced extraction device

Technical Field

The utility model relates to a gas collecting equipment field specifically is a device is adopted by force to oil pumping pipe box pipe gas.

Background

The oil well casing gas is the oil well separation gas led out to the ground through the casing. The oil well is divided into an oil pipe and a casing, wherein the oil pipe is a flow passage for lifting fluid to the ground after acting by a pump, and the casing is a flow passage outside the oil pipe and has the function of extending gas separated from a stratum to the ground. Because the oil field is being produced, gas associated with petroleum liquids, primarily methane, often contains significant quantities of ethane and heavy hydrocarbon components, is present between the reservoirs. Associated gas recovery processing refers to the separation of ethane, propane, butane and heavier components from the gas stream, which may be further processed for sale as pure components or as Natural Gas Liquids (NGL) or LPG.

The collection and separation of oil well casing gas is always a well-recognized problem in the industry, the collection and separation difficulty is high, but the direct discharge of the casing gas into the air not only wastes resources, but also pollutes the environment. In order to solve the problems, the oil pumping pipe casing gas forced extraction device is improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a device is adopted by force to oil pumping pipe box gas, include:

a pre-separator: the gas inlet end, the top end and the bottom end of the pre-separator are respectively communicated with a first gas inlet pipe, a first gas outlet pipe and a first liquid outlet pipe;

a high-pressure separator: the gas inlet end, the gas outlet end and the bottom end of the high-pressure separator are respectively communicated with a second gas inlet pipe, a second gas outlet pipe and a second liquid outlet pipe;

a low-pressure separator: the liquid inlet end, the bottom end and the gas outlet end of the low-pressure separator are respectively communicated with a first liquid inlet pipe, a third liquid outlet pipe and a third gas outlet pipe;

a precooler: a first air inlet, a first air outlet, a second air inlet and a second air outlet are respectively arranged at the left lower part, the right upper part and the left upper corner of the precooler, wherein the first air inlet is communicated with a first air outlet pipe, the first air outlet is communicated with a second air inlet pipe, and the second air inlet is communicated with a first separation pipe;

vortex separation tube: and the input end, the bottom end and the output end of the vortex separation pipe are respectively communicated with the second air outlet pipe, the third air outlet pipe and the first separation pipe.

As a preferred technical scheme of the utility model, first drain pipe, second drain pipe and third drain pipe communicate jointly and have total drain pipe, total drain pipe and outside stock solution device intercommunication.

As an optimized technical scheme of the utility model, the second gas outlet intercommunication of precooler has the second separation tube, the second separation tube communicates with outside gas storage device.

As an optimized technical scheme of the utility model, first feed liquor pipe and first separator tube intercommunication.

As a preferred technical scheme of the utility model, the equal fixedly connected with mounting bracket in bottom of preseparator, high pressure separator and low pressure separator to preseparator, high pressure separator and low pressure separator are all through mounting bracket and the base fixed connection of setting in its bottom in advance.

As a preferred technical scheme of the utility model, the vortex separation tube is formed by communicating a contraction section, a throat part, an expansion section and a separation section, wherein the contraction section and the expansion section are in a conical shape with opposite tops;

the throat part is a channel which has a meridian passage smaller than the inner diameter of the vortex separation pipe and is used for communicating the contraction section with the expansion section;

the separation section is arranged at one end of the expansion section far away from the throat part.

As an optimal technical scheme of the utility model, the inlet end and the bottom of vortex knockout tube contraction section communicate with second outlet duct and third outlet duct intercommunication respectively:

the separation section of the vortex separation tube is in communication with the first separation tube.

The utility model has the advantages that: this kind of oil pumping pipe sleeve pipe gas forced recovery device is provided with the preseparator of intercommunication each other, high pressure separator, low pressure separator, precooler and vortex separator tube, through preseparator, high pressure separator carries out preliminary gas-liquid separation and secondary gas-liquid separation to the mist, carry out gas-liquid separation once more through vortex separator tube, constitute the return circuit through low pressure separator and precooler and above-mentioned structure, can ingenious realization circulation separation, whole device simple process, take up an area of less, safe and reliable, green, can effectively realize the separation and the collection to oil field associated gas.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a casing gas forced extraction device of the present invention;

FIG. 2 is a schematic structural diagram of a precooler of the oil pumping pipe sheathed tube gas forced extraction device of the present invention;

FIG. 3 is a schematic view of the internal structure of a vortex separation tube of the oil well pipe sleeved gas forced extraction device of the present invention;

in the figure: 1. a pre-separator; 11. a first intake pipe; 12. a first air outlet pipe; 13. a first liquid outlet pipe; 2. a high pressure separator; 21. a second intake pipe; 22. a second air outlet pipe; 23. a second liquid outlet pipe; 3. a low pressure separator; 31. a first liquid inlet pipe; 32. a third liquid outlet pipe; 33. a third air outlet pipe; 4. a precooler; 41. A first air inlet; 42. a first air outlet; 43. a second air inlet; 44. a second air outlet; 5. a vortex separation tube; 51. a contraction section; 52. a throat; 53. an expansion section; 54. a separation section; 6. a main liquid outlet pipe; 7. A first separation tube; 8. a second separation tube; 9. a mounting frame; 10. a base.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1-3, a pipe-in-pipe gas forced recovery device for an oil pumping pipe comprises a preseparator 1, a high-pressure separator 2, a low-pressure separator 3, a precooler 4 and a vortex separation pipe 5, wherein a gas inlet end, a top end and a bottom end of the preseparator 1 are respectively communicated with a first gas inlet pipe 11, a first gas outlet pipe 12 and a first liquid outlet pipe 13.

The gas inlet end, the gas outlet end and the bottom end of the high-pressure separator 2 are respectively communicated with a second gas inlet pipe 21, a second gas outlet pipe 22 and a second liquid outlet pipe 23.

The liquid inlet end, the bottom end and the gas outlet end of the low-pressure separator 3 are respectively communicated with a first liquid inlet pipe 31, a third liquid outlet pipe 32 and a third gas outlet pipe 33, and the first liquid inlet pipe 31 is communicated with the first separation pipe 7.

A first air inlet 41, a first air outlet 42, a second air inlet 43 and a second air outlet 44 are respectively arranged at the left lower part, the right upper part and the left upper corner of the precooler 4, wherein the first air inlet 41 is communicated with the first air outlet pipe 12, the first air outlet 42 is communicated with the second air inlet pipe 21, and the second air inlet 43 is communicated with the first separation pipe 7. The second air outlet 44 of the precooler 4 is communicated with a second separation pipe 8, and the second separation pipe 8 is communicated with an external air storage device.

First drain pipe 13, second drain pipe 23 and third drain pipe 32 communicate jointly have total drain pipe 6, total drain pipe 6 communicates with outside stock solution device.

The equal fixedly connected with mounting bracket 9 in bottom of preseparator 1, high pressure separator 2 and low pressure separator 3 to preseparator 1, high pressure separator 2 and low pressure separator 3 all pass through mounting bracket 9 and set up the base 10 fixed connection in its bottom.

The input end, the bottom end and the output end of the vortex separation pipe 5 are respectively communicated with the second air outlet pipe 22, the third air outlet pipe 33 and the first separation pipe 7.

The vortex separation pipe 5 is formed by communicating a contraction section 51, a throat part 52, an expansion section 53 and a separation section 54, wherein the contraction section 51 and the expansion section 53 are in a conical shape with opposite tops; the throat part 52 is a passage which is smaller than the inner diameter of the vortex separation pipe 5 in a menstrual flow direction and is used for communicating the contraction section 51 with the expansion section 53; the separation section 54 is disposed at an end of the diverging section 53 remote from the throat 52. The air inlet end and the bottom end of the contraction section 51 of the vortex separation pipe 5 are communicated with the second air outlet pipe 22 and the third air outlet pipe 33 respectively: the separation section 54 of the cyclonic separation tube 5 is in communication with the first separation tube 7.

The working process is as follows:

(1) the mixed gas enters the preseparator 1 through the first gas inlet pipe 11, after the mixed gas is preliminarily separated in the preseparator 1, the liquid flows into the main liquid outlet pipe 6 through the first liquid outlet pipe 13, and the gas enters the precooler 4 through the first gas outlet pipe 12;

(2) after being precooled in the precooler 4, the gas enters the high-pressure separator 2 through a second gas inlet 21 pipe;

(3) after the gas is separated by the high-pressure separator 2, the separated liquid enters the main liquid outlet pipe 6 through the second liquid outlet pipe 23, and the separated gas enters the vortex separation pipe 5 through the second gas outlet pipe 22;

(4) after the gas is separated again in the vortex separation pipe 5, the separated liquid enters the low-pressure separator 3 through the first liquid inlet pipe 31, the separated gas returns to the vortex separation pipe 5 through the third gas outlet pipe 33 after the liquid is separated by the low-pressure separator 3, and the liquid separated in the low-pressure separator 3 enters the main liquid outlet pipe 6 through the third liquid outlet pipe 32;

(5) the gas is discharged from the vortex separation pipe 5 and enters the precooler 4 through the first separation pipe 7, after the gas is finally separated by the precooler 4, the gas flows out from the second separation pipe 8, and the liquid enters the high-pressure separator 2 through the second gas inlet pipe 21.

The working principle of the vortex separation pipe 5 is as follows: after the gas enters the vortex separation pipe 5, radial and tangential acceleration vortex flows are generated under the action of vortex gas, and in the process of reaching the throat 52, the meridian passage becomes small, the pressure becomes small, the temperature is reduced, the speed is increased, and the speed exceeds the sonic speed at the throat 52. Then the gas enters the expanding section 53 and the separating section 54, according to the characteristics of the Laval tube, the gas velocity continues to increase, the pressure and the temperature continue to decrease, and gas-liquid separation is formed at the section, specifically: the components with relatively high dew points in the gas are condensed into liquid drops, are thrown to the pipe wall by the centrifugal force of vortex flow and flow to the low-pressure separator 3 through the first liquid inlet pipe 31; the gas enters the pressurizing section through a pipeline, becomes dry gas after being subjected to speed reduction, pressurization and temperature rise and is output through the first separation pipe 7.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a device is adopted to oil pumping pipe sleeve pipe gas by force which characterized in that includes:

preseparator (1): the air inlet end, the top end and the bottom end of the preseparator (1) are respectively communicated with a first air inlet pipe (11), a first air outlet pipe (12) and a first liquid outlet pipe (13);

high pressure separator (2): the gas inlet end, the gas outlet end and the bottom end of the high-pressure separator (2) are respectively communicated with a second gas inlet pipe (21), a second gas outlet pipe (22) and a second liquid outlet pipe (23);

low pressure separator (3): the liquid inlet end, the bottom end and the gas outlet end of the low-pressure separator (3) are respectively communicated with a first liquid inlet pipe (31), a third liquid outlet pipe (32) and a third gas outlet pipe (33);

precooler (4): a first air inlet (41), a first air outlet (42), a second air inlet (43) and a second air outlet (44) are respectively arranged at the left lower part, the right upper part and the left upper corner of the precooler (4), wherein the first air inlet (41) is communicated with the first air outlet pipe (12), the first air outlet (42) is communicated with the second air inlet pipe (21), and the second air inlet (43) is communicated with the first separation pipe (7);

vortex separation tube (5): the input end, the bottom end and the output end of the vortex separation pipe (5) are respectively communicated with the second air outlet pipe (22), the third air outlet pipe (33) and the first separation pipe (7).

2. The oil well pipe sleeved gas forced extraction device of claim 1, characterized in that:

first drain pipe (13), second drain pipe (23) and third drain pipe (32) communicate jointly and have total drain pipe (6), total drain pipe (6) and outside stock solution device intercommunication.

3. The oil well pipe sleeved gas forced extraction device of claim 1, characterized in that:

and a second air outlet (44) of the precooler (4) is communicated with a second separation pipe (8), and the second separation pipe (8) is communicated with an external air storage device.

4. The oil well pipe sleeved gas forced extraction device of claim 1, characterized in that:

the first liquid inlet pipe (31) is communicated with the first separation pipe (7).

5. The oil well pipe sleeved gas forced extraction device of claim 1, characterized in that:

the equal fixedly connected with mounting bracket (9) in bottom of preseparator (1), high pressure separator (2) and low pressure separator (3) to preseparator (1), high pressure separator (2) and low pressure separator (3) all pass through mounting bracket (9) and set up base (10) fixed connection in its bottom.

6. The oil well pipe sleeved gas forced extraction device of claim 1, characterized in that:

the vortex separation pipe (5) is formed by communicating a contraction section (51), a throat part (52), an expansion section (53) and a separation section (54), wherein the contraction section (51) and the expansion section (53) are in a conical shape with opposite tops;

the throat part (52) is a channel which is smaller than the inner diameter of the vortex separation pipe (5) through a meridian and is used for communicating the contraction section (51) with the expansion section (53);

the separation section (54) is arranged at one end of the expansion section (53) far away from the throat part (52).

7. The oil well pipe sleeved gas forced extraction device of claim 6, wherein:

the air inlet end and the bottom end of the contraction section (51) of the vortex separation pipe (5) are communicated with the second air outlet pipe (22) and the third air outlet pipe (33) respectively:

the separation section (54) of the vortex separation pipe (5) is communicated with the first separation pipe (7).