CN113550748A

CN113550748A - Recovery device and recovery method

Info

Publication number: CN113550748A
Application number: CN202010340779.7A
Authority: CN
Inventors: 丁亮; 刘强; 郭巍
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2021-10-26
Anticipated expiration: 2040-04-26
Also published as: CN113550748B

Abstract

The invention provides a recovery device and a recovery method, wherein the recovery device is communicated with a main pipe, an auxiliary pipe and a sampling pipe, and comprises: the sampling tube is communicated with the sampling tube through a first inlet, and the auxiliary tube is communicated with the first barrel through a second connector; the cover body is connected with the first cylinder body, and the top of the cover body is provided with an air vent; the separation device is arranged in the first cylinder, the second joint is positioned below the separation device, and the separation device can separate the fluid entering the first cylinder from the first joint; the cover body is arranged in the cover body and is positioned between the air vent and the separating device, and the cover body is provided with an air vent; the spheroid sets up between the cover body gas release hole, and the spheroid can the shutoff or open the gas release hole. The technical scheme of the application has solved the viscous crude well production in the correlation technique effectively and has sampled the time, the easy high-speed blowout problem in the sample connection of crude oil.

Description

Recovery device and recovery method

Technical Field

The invention relates to the field of oilfield exploitation, in particular to a recovery device and a recovery method.

Background

When heavy oil is exploited, the most effective conventional method is to inject high-temperature and high-pressure steam into the oil reservoir, so as to reduce the viscosity of crude oil and reduce the flow resistance of the oil reservoir. During production of the well, water vapor separated from the wellbore and passing through the casing is vented and a sample is withdrawn for testing. However, when the heavy oil well is actually produced, separated high-temperature steam exists in a shaft, and problems exist in the processes that the steam needs to be discharged from a casing and the production and sampling are carried out:

1. the pressure in the sleeve is manually released or a constant pressure air release valve is installed during manual well patrol, and the following risks exist:

(1) the manual pressure release belongs to timed and periodic release, and because the pressure is possibly accumulated too high in the sleeve period, the water vapor in the sleeve expands rapidly when released suddenly, and forms high-speed steam flow to carry oil-water mixed liquid to be discharged together. On one hand, the environment pollution is easy to cause, and on the other hand, the water vapor in the sleeve contains a certain amount of crude oil light components, so that potential safety hazards exist.

(2) During the operation of the constant pressure air release valve, two uncontrollable risks of sudden pressure rise and incomplete low pressure release exist, and the specific conditions are as follows:

when the gas channeling occurs between the wells of the heavy oil well, the mixed liquid of stratum high-temperature water vapor carrying oil, water, sand and the like is easily sprayed out, and the pressure in the casing is suddenly increased. The constant-pressure air release valve cannot identify oil-water mixed liquid, the mixed liquid is not controlled and is directly released, and high-speed fluid in a pipeline forms friction and shearing action, so that the pipeline can be damaged in serious conditions, leakage is easy to occur, and the external environment is polluted; or into the oil collection system, with uncontrolled risk.

Secondly, when the pressure of the high-temperature water vapor in the heavy oil well is lower, if the pressure of the high-temperature water vapor in the high-temperature water vapor cannot reach the opening pressure of the air release valve, the high-temperature water vapor in the sleeve cannot be completely released, the working fluid level in the oil well is forced to fall, the pumping efficiency is reduced, the yield is reduced, and uncontrollable risks such as low production efficiency of the oil well exist.

2. When the production sample is taken, the sampling cup for containing the sample is manually held, the lower part of the wellhead sampler is arranged, and the switch of the sampler is twisted to take the sample. Because of the density difference of high-temperature steam and oil-water mixed liquid, the phenomenon that the high-temperature steam and the oil-water mixed liquid are separated always exists in a shaft and a pipeline, when a switch of the sampler is turned on, more than 90 percent of wells discharge the high-temperature steam firstly from a sampling port and then discharge the oil-water mixed liquid. Meanwhile, the crude oil is sprayed out from the sampling port at a high speed under the influence of pressure difference between the inside and the outside of the pipeline, so that the crude oil has high landing risk and is very easy to cause environmental pollution.

Disclosure of Invention

The invention mainly aims to provide a recovery device and a recovery method, which are used for solving the problem that crude oil is easy to eject from a sampling port at a high speed when a thick oil well in the related technology is produced and sampled.

In order to achieve the above object, according to one aspect of the present invention, there is provided a recovery apparatus communicating with a main pipe, a sub pipe and a sampling pipe, the recovery apparatus comprising: the sampling device comprises a first barrel, a second barrel and a sampling tube, wherein the first barrel is provided with a first joint and a second joint, the first joint comprises a first inlet and a second inlet, the first barrel is communicated with the main tube through the first inlet, the second inlet is communicated with the sampling tube, and the first barrel is communicated with an auxiliary tube through the second joint; the cover body is connected with the first cylinder body, and the top of the cover body is provided with an air vent; the separation device is arranged in the first cylinder, the second joint is positioned below the separation device, and the separation device can separate the fluid entering the first cylinder from the first joint; the cover body is arranged in the cover body and is positioned between the air vent and the separating device, and the cover body is provided with an air vent; the spheroid sets up between the cover body gas release hole, and the spheroid can the shutoff or open the gas release hole.

Further, separator includes first baffle and runs through the second barrel of first baffle, and first baffle is connected on the inner wall of first barrel, and first baffle divide into cavity and lower cavity with first barrel, and the hole and the last cavity of second barrel are linked together with lower cavity, and first joint is located between the bottom of first baffle and second barrel, has the interval between the bottom of second barrel and the first barrel bottom.

Furthermore, the first end of the second cylinder protrudes upwards from the first baffle, and a through hole communicated with the upper chamber is formed in the first end of the second cylinder.

Furthermore, a communication hole is formed at the communication position of the first joint and the first cylinder, the communication hole and the second cylinder are arranged in a staggered mode and do not overlap in projection in the horizontal plane), a second baffle is further arranged in the first cylinder, the communication hole and the second baffle are arranged oppositely, and the aperture of the communication hole is gradually reduced from the outside of the first cylinder to the inside of the first cylinder.

Further, recovery unit still includes that first filter and second filter, and first filter all sets up in first barrel with the second filter, and first filter is located between the separator and the cover body, and the second filter is located between the cover body and the first filter.

Further, recovery unit still includes the first body of being connected with the top of lid, and the hole and the gas release hole of first body are linked together.

Further, a net structure is arranged on the inner wall of the first pipe body, and the first pipe body is a bent pipe.

Further, the cover body is conical, the air release hole is formed in the top of the cover body, and under the condition that the ball body is acted by force, the inner wall of part of the cover body can block the ball body, so that the ball body can block the air release hole.

Furthermore, the second joint comprises a first outlet and a second outlet, the first outlet is communicated with the auxiliary pipe, the second outlet of the second joint is connected with a second pipe body, and a valve is arranged on the second pipe body; the recovery device also includes a bracket attached to the first barrel.

According to another aspect of the present invention, there is provided a recycling method including: the recovery device is used; the first inlet of the first joint of the recovery device is connected with the main pipe, the second inlet of the first joint is connected with the sampling pipe, and the second joint of the recovery device is connected with the auxiliary pipe.

By applying the technical scheme of the invention, the recovery device is communicated with the main pipe, the auxiliary pipe and the sampling pipe. The recovery device comprises: the device comprises a first cylinder, a cover body, a separating device, a cover body and a ball body. The first barrel is provided with a first joint and a second joint. The first connector includes a first inlet and a second inlet. The first cylinder is communicated with the main pipe through a first inlet. The second inlet is communicated with the sampling tube. The first cylinder is communicated with the auxiliary pipe through a second joint. The cover body is connected with the first cylinder body, and the top of the cover body is provided with an air release hole. The separating device is arranged in the first cylinder. The second joint is located below the separating device. The separation device is capable of separating fluid entering the first barrel from the first connector. The cover body is arranged in the cover body and is positioned between the air vent and the separating device. The cover body is provided with an exhaust hole. The spheroid sets up between the cover body gas release hole, and the spheroid can the shutoff or open the gas release hole. Firstly, releasing the pressure in the sleeve; after water vapor is collected in the sleeve, the water vapor flows into the first cylinder from the first inlet of the first joint through the main pipe, and the water vapor flows into the first cylinder from the second inlet of the first joint through the sampling pipe. Because the effect of the pressure in the sleeve pipe for steam that gets into in the first barrel produces the whirl, and steam is when separator, and separator can hinder steam, reduces steam's velocity of flow, can separate into high temperature steam and mixed liquid with steam, and the high temperature steam after the separation can be discharged from the exhaust hole from bottom to top. When high-temperature water vapor is discharged from the exhaust holes, the high-temperature water vapor impacts the ball body, overcomes the gravity of the ball body to do work, and consumes partial kinetic energy of the high-temperature water vapor, so that the flow rate of the high-temperature water vapor is reduced, the speed of the high-temperature water vapor discharged from the exhaust holes is effectively controlled, and the high-temperature water vapor is orderly discharged from the exhaust holes. The separated mixed liquid can be discharged from the second joint through the auxiliary pipe due to the gravity of the mixed liquid; when the water vapor pressure in the sleeve is large and the flow velocity is fast, the high-temperature water vapor separated by the separating device can overcome the gravity of the ball body, when the partial kinetic energy of the high-temperature water vapor is consumed, the ball body is jacked up by the high-temperature water vapor, the ball body is contacted with the top of the cover body, the ball body seals the vent hole, the automatic sealing is realized, and the high-temperature water vapor is prevented from overflowing. Along with the continuous production operation of single well, separator in the first barrel keeps separating steam to and high temperature steam continuously overcomes spheroidal gravity work, and high temperature steam's kinetic energy is consumed, and the ability of carrying mixed liquid continuously reduces, and the top separation of spheroid and lid opens the gas release hole. Like this first barrel inside can realize pressure balance, and the mixture after the filtration connects from the auxiliary pipe through the second and meets the sleeve pipe, and then can balance the intraductal pressure of cover, and then high temperature steam can resume from the normal emission of gas vent, avoids causing environmental pollution. After the pressure release in the cover pipe falls, do not have high temperature steam to flow in the sampling tube, at this moment, open the switch of the sampler on the sampling tube, mixed liquid can flow out from the sample connection steadily. Like this, solved on the one hand among the correlation technique density of high temperature vapor and oil water mixed liquid and had the difference for when opening the switch of sampler, the well of more than 90% discharges the problem of high temperature vapor earlier the oil extraction water mixed liquid from the sample connection. On the other hand, the problem that the crude oil is sprayed out from the sampling port at high speed due to the influence of pressure difference inside and outside the pipeline, so that the crude oil is high in landing risk and environment pollution is easily caused is solved. Therefore, the technical scheme of the application effectively solves the problem that crude oil is easy to be ejected from the sampling port at a high speed when the thick oil well in the related technology is produced and sampled.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, 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 shows a schematic view of a sampling tube of an embodiment of a recovery apparatus according to the present invention mounted on the recovery apparatus;

FIG. 2 shows a schematic front view of the recycling apparatus of FIG. 1;

FIG. 3 shows a schematic sectional view A-A of the recycling apparatus of FIG. 2;

FIG. 4 shows a schematic side view of the recycling apparatus of FIG. 2; and

fig. 5 shows a schematic top view of the recycling apparatus of fig. 2.

Wherein the figures include the following reference numerals:

1. a main pipe; 2. a secondary pipe; 3. a sampling tube; 4. a switch; 5. a sleeve; 10. a first cylinder; 101. a communicating hole; 11. a first joint; 111. a first inlet; 112. a second inlet; 12. a second joint; 121. a first outlet; 122. a second outlet; 13. a second baffle; 14. a second tube body; 15. a valve; 16. a first flange; 20. a cover body; 21. air bleeding holes; 22. a second flange; 30. a separation device; 31. a first baffle plate; 32. a second cylinder; 321. a through hole; 40. a cover body; 41. an exhaust hole; 50. a sphere; 60. a first filter member; 70. a second filter member; 80. a first pipe body; 81. a network structure; 90. a support; 91. supporting a lug; 92. and (7) supporting legs.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 3, the recovery apparatus of the present embodiment communicates with all of a main pipe 1, a sub pipe 2, and a sampling pipe 3. The recovery device comprises: the first cylinder 10, the cover 20, the separating device 30, the cover 40 and the sphere 50. The first cylinder 10 is provided with a first joint 11 and a second joint 12. The first joint 11 includes a first inlet 111 and a second inlet 112. The first cylinder 10 communicates with the main pipe 1 through the first inlet 111. The second inlet 112 communicates with the sampling tube 3. The first cylinder 10 communicates with the secondary pipe 2 through a second joint 12. The cover 20 is connected to the first cylinder 10, and the top of the cover 20 is provided with an air vent 21. The separating apparatus 30 is disposed within the first cartridge 10. The second connector 12 is located below the separating apparatus 30. The separation device 30 can separate the fluid introduced into the first cylinder 10 from the first joint 11. The cover 40 is disposed in the cover 20 between the air release hole 21 and the separating apparatus 30. The cover 40 is provided with an exhaust hole 41. The ball 50 is disposed between the air vents 21 of the cover 40, and the ball 50 can close or open the air vents 21.

By applying the technical scheme of the embodiment, the recovery device is communicated with the main pipe 1, the auxiliary pipe 2 and the sampling pipe 3. The recovery device comprises: the first cylinder 10, the cover 20, the separating device 30, the cover 40 and the sphere 50. The separating apparatus 30 is disposed within the first cartridge 10. The second connector 12 is located below the separating apparatus 30. The separation device 30 can separate the fluid introduced into the first cylinder 10 from the first joint 11. The cover 40 is disposed in the cover 20 between the air release hole 21 and the separating apparatus 30. The cover 40 is provided with an exhaust hole 41. The ball 50 is disposed between the air vents 21 of the cover 40, and the ball 50 can close or open the air vents 21. Firstly, the pressure in the sleeve 5 is released; after water vapor is collected in the sleeve 5, the water vapor flows from the first inlet 111 of the first joint 11 into the first cylinder 10 through the main pipe 1 in the direction shown by the left-side arrow of the main pipe 1 in fig. 1, and the water vapor flows from the second inlet 112 of the first joint 11 into the first cylinder 10 through the sampling pipe 3 in the direction shown by the left-side arrow of the sampling pipe 3 in fig. 1. Due to the effect of the pressure in the sleeve 5, the steam entering the first cylinder 10 generates a rotational flow, when the steam passes through the separation device 30, the separation device 30 can block the steam, the flow rate of the steam is reduced, the steam can be separated into high-temperature steam and mixed liquid, and the separated high-temperature steam can be discharged from the exhaust hole 41 from bottom to top. When the high-temperature water vapor is discharged from the exhaust holes 41, the high-temperature water vapor impacts the ball 50, overcomes the gravity of the ball 50 to do work, and consumes partial kinetic energy of the high-temperature water vapor, so that the flow rate of the high-temperature water vapor is reduced, the speed of the high-temperature water vapor discharged from the exhaust holes 21 is effectively controlled, and the high-temperature water vapor is orderly discharged from the exhaust holes 21. The separated mixed liquid can be discharged from the second joint 12 through the secondary pipe 2 due to the self gravity; when the steam pressure in the casing 5 is high and the flow rate is high, the high-temperature steam separated by the separation device 30 can overcome the gravity of the ball 50, and when part of the kinetic energy of the high-temperature steam is consumed, the ball 50 is jacked up by the high-temperature steam, the ball 50 is contacted with the top of the cover body 20, the ball 50 blocks the air release hole 21, automatic sealing is realized, and the high-temperature steam is prevented from overflowing. Along with the continuous production operation of single well, separator 30 in first barrel 10 keeps separating steam to and high temperature steam continuously overcomes the gravity work of spheroid 50, and the kinetic energy of high temperature steam is consumed, and the ability of carrying the mixed liquid continuously reduces, and spheroid 50 and the top of lid 20 separate, open gas release hole 21. Like this first barrel 10 is inside can realize pressure balance, and the mixture after the filtration passes through in the secondary pipe 2 flow meeting sleeve pipe 5 through the second joint 12 from the direction that the arrow in figure 1's secondary pipe 2 top right shows, and then can balance the pressure in the sleeve pipe 5, and then high temperature steam can resume and normally discharge from the gas release hole 21, avoids causing environmental pollution. After the pressure in the sleeve pipe 5 is released, no high-temperature water vapor flows out in the sampling tube 3, and at this time, the switch of the sampler on the sampling tube 3 is turned on, and the mixed liquid can stably flow out from the sampling port. Like this, solved on the one hand among the correlation technique density of high temperature vapor and oil water mixed liquid and had the difference for when opening the switch of sampler, the well of more than 90% discharges the problem of high temperature vapor earlier the oil extraction water mixed liquid from the sample connection. On the other hand, the problem that the crude oil is sprayed out from the sampling port at high speed due to the influence of pressure difference inside and outside the pipeline, so that the crude oil is high in landing risk and environment pollution is easily caused is solved. Therefore, the technical scheme of the embodiment effectively solves the problem that crude oil is easy to be ejected from the sampling port at a high speed when the thick oil well in the related art is produced and sampled. The fluid is preferably water vapor. In the present embodiment, the water vapor can also flow from the second joint 12 into the first cylinder 10 through the secondary pipe 2 from the direction shown by the left arrow above the secondary pipe 2 in fig. 1. The mixed liquid is a mixture containing oil, water and sand.

As shown in fig. 3, in the present embodiment, the separating device 30 includes a first baffle 31 and a second cylinder 32 penetrating the first baffle 31. The first barrier 31 is attached to the inner wall of the first cylinder 10, and the first barrier 31 divides the first cylinder 10 into an upper chamber and a lower chamber. The inner bore of the second cylinder 32 communicates with the upper and lower chambers. The first joint 11 is located between the first barrier 31 and the bottom end of the second cylinder 32. The bottom of the second cylinder 32 is spaced from the bottom of the first cylinder 10. The above-mentioned space facilitates the circulation of water vapor. Due to the action of the pressure in the sleeve 5, the steam entering the first cylinder 10 generates rotational flow, when the steam in the lower chamber passes through the second cylinder 32, the steam touches the lower surface of the first baffle 31, the inner wall surface of the first cylinder 10 and the outer wall surface of the second cylinder 32, friction can be generated, the mixed liquid can be separated from the steam, and the mixed liquid is adhered to the lower surface of the first baffle 31, the inner wall surface of the first cylinder 10 and the outer wall surface of the second cylinder 32 and easily falls to the bottom of the first cylinder 10. The separated high-temperature steam flows into the upper chamber from the inside of the second cylinder 32 from the bottom to the top, and the high-temperature steam and the mixed liquid can be effectively separated by the arrangement of the first baffle 31.

As shown in fig. 3, in the present embodiment, the first end of the second cylinder 32 protrudes upward from the first baffle 31. Thus, the joint of the second cylinder 32 and the first baffle 31 has better joint strength. To avoid more fluid accumulation in the upper chamber, the first end of the second cylinder 32 is provided with a through hole 321 communicating with the upper chamber. The fluid can flow from the through hole 321 to the bottom of the first cylinder 10 along the inner wall surface of the second cylinder 32.

As shown in fig. 3 and 5, in the present embodiment, a communication hole 101 is formed at a position where the first joint 11 communicates with the first cylinder 10, and the communication hole 101 is offset from the second cylinder 32. The offset arrangement means that the projections of the communication hole 101 and the second cylindrical body 32 in the vertical plane do not overlap. A second baffle 13 is further disposed in the first cylinder 10, and the communication hole 101 is disposed opposite to the second baffle 13. Thus, the water vapor with higher speed passing through the communication hole 101 can directly impact the second baffle 13, the shearing force generated when the water vapor directly impacts the second cylinder 32 and the friction force generated when the water vapor directly impacts the inner wall of the first cylinder 10 are effectively reduced, and the possibility that the water vapor with higher speed damages the recovery device is greatly reduced. The hole diameter of the communication hole 101 gradually decreases from the outside of the first cylinder 10 to the inside of the first cylinder 10. In this way, the relatively high-speed water vapor passing through the communication hole 101 can rapidly form a swirling flow in the circumferential direction along the inner wall of the first cylinder 10, facilitating the separation of the water vapor by the separation device 30.

As shown in fig. 3, in the present embodiment, the recycling device further includes a first filter member 60 and a second filter member 70, and both the first filter member 60 and the second filter member 70 are disposed in the first cartridge 10. The first filter member 60 is located between the separating apparatus 30 and the housing 40 and the second filter member 70 is located between the housing 40 and the first filter member 60. The high-temperature water vapor separated by the separation device 30 passes through the first filtering member 60 from bottom to top, and can be condensed and filtered once, and the condensed liquid flows back to the bottom of the first cylinder 10 through the separation device 30 and is discharged from the second joint 12. The high-temperature water vapor after passing through the first filter element 60 enters the second filter element 70 again, and is condensed and filtered again, so that the high-temperature water vapor after being filtered by the second filter element 70 reaches purer gas and is orderly discharged through the exhaust holes 41. The first filter member 60 of the present embodiment is preferably a corrugated hole plate packing. The second filter 70 is preferably a wire mesh demister.

As shown in fig. 3 and 4, in the present embodiment, the recycling apparatus further includes a first pipe 80 connected to the top of the cover 20. The inner hole of the first tube 80 is communicated with the air vent 21. When steam channeling occurs between the wells of the heavy oil well, the pressure in the casing is suddenly increased, the ball 50 is impacted by pressurized steam, the ball 50 is quickly contacted with the top of the cover body 20, the ball 50 blocks the air release hole 21 to prevent the steam channeling from further expanding, and after the pressure in the casing 5 is balanced, the extracted hydraulic pressure returns to the wells according to the liquid level pressure in the shaft, so that the mixed liquid is prevented from being directly discharged. In addition, after the steam channeling occurs, the temperature of the wellhead of the heavy oil well rises, and after the temperature of the wellhead of the heavy oil well rises during patrol or after a single-well monitoring system finds that the temperature of the wellhead of the heavy oil well rises, the pressure in the quick sleeve is quickly released through the quick connection of the first pipe body 80 and the kill car, so that the further diffusion of the generated steam channeling damage can be effectively reduced. Therefore, the problem that in the related technology, the bottom hole pressure of the heavy oil well is suddenly increased due to steam channeling in a normal state, a large amount of oil, steam, water and sand mixed liquid is sprayed out from the casing opening of the oil well, and large-area environmental pollution or production pipelines on the ground are caused can be solved.

As shown in fig. 3, in the present embodiment, a net structure 81 is disposed on the inner wall of the first tube 80. The mesh structure 81 can be located above the air vent 21, so as to prevent foreign matters from entering the cover 20 from the opening of the first tube 80, and avoid affecting the sealing effect of the ball 50 after contacting the cover 20. The first tube 80 is a bent tube. Thus, the opening of the first tube 80 faces downward, thereby effectively preventing foreign matters from entering the first tube 80 from the opening of the first tube 80.

In the embodiment shown in fig. 3, the cover 20 has a tapered shape, and the air release hole 21 is provided on the top of the cover 20. When the ball 50 is acted by force, the inner wall of the partial cover body 20 can block the ball 50, so that the ball 50 blocks the air release hole 21. The structure is simple, the connection is convenient, and the processing is easy. The conical cover 20 forms a necking at the air release hole 21, and effectively blocks the ball 50 from being separated from the cover 20. The inner wall surface of part of the cover body 20 and the surface of the sphere 50 are treated by surface oil-proof treatment, and the cover body 20 and the sphere 50 are made of wear-resistant metal or wear-resistant temperature-resistant pressure-resistant non-metal materials. The exhaust hole 41 of the present embodiment is plural. The plurality of exhaust holes 41 facilitate the passage of high-temperature water vapor through the cover 40. The ball 50 of this embodiment comprises a plurality of balls of different weights so that different weights can be selected for different pressure levels within the casing.

As shown in fig. 2 and 3, in the present embodiment, the recycling apparatus further includes a first flange 16 provided on the first cylinder 10 and a second flange 22 provided on the cover 20. The first flange 16 and the second flange 22 are connected. The provision of the first flange 16 and the second flange 22 facilitates the removable attachment of the first barrel 10 and the cover 20. When the structure in the first cylinder 10 or the lid 20 needs to be inspected, the first flange 16 and the second flange 22 may be detached and inspected.

As shown in fig. 1 to 3, the second joint 12 includes a first outlet 121 and a second outlet 122, and the first outlet 121 communicates with the sub-pipe 2. In this way, the mixed liquor at the bottom of the first cylinder 10 can flow from the first outlet 121 through the secondary pipe 2 to the sleeve 5. The second connector 12 has a second outlet 122 connected to the second tube 14. The second tube 14 is provided with a valve 15. When overhauing or clearance recovery unit, the remaining mixed liquid evacuation in the first barrel 10 needs, at this moment, opens valve 15, can connect a container in the below of second body 14 for remaining mixed liquid is gone into to this container from second body 14 department, and it is last to avoid remaining mixed liquid directly to arrange ground, polluted environment.

As shown in fig. 2 and 4, the recycling apparatus further includes a bracket 90 coupled to the first cylinder 10. The support 90 is capable of supporting the first cartridge 10 to facilitate placement of the retrieval device on the ground. As shown in fig. 2 and 4, the bracket 90 includes an ear 91 connected to the first cylinder 10 and a leg 92 connected to the ear 91. The upper part of the first cylinder 10 is connected with the support lug 91 by welding. The lug 91 and the leg 92 are connected by a bolt. Thus, depending on the placement position of the first cylinder 10, the first cylinder 10 may be supported by the lugs 91 or by the lugs 91 and the legs 92 together.

Therefore, the recovery device of the embodiment can improve the production efficiency of a single well and improve production equipment and facilities on the ground of an oil well. The recovery device of the embodiment is of a pure mechanical structure, is safe to use, can prevent environmental pollution, and accords with environment-friendly clean production. The single well production device is suitable for various types of thick oil machines to produce single wells, the prevention and control capacity of the single well production device is improved, the gas-liquid separation is realized, the yield of the single well is improved to the maximum extent, and the pollution risk to the environment in the water vapor release process in the casing is reduced. Meanwhile, the labor intensity and the operation risk caused by high-temperature steam operation of manually placing the sleeve are reduced, so that the method meets the national safety and environmental protection laws and regulations and new requirements, and has good social and economic benefits.

The present application further provides a recycling method, as shown in fig. 1 to 3, the recycling method of the present embodiment includes: the above-mentioned recovery apparatus was used. The recovery method of the embodiment can solve the problem that crude oil is easy to be ejected from a sampling port at a high speed when the thick oil well in the related art is produced and sampled.

The first inlet 111 of the first connection 11 of the recovery device is connected to the main pipe 1. The second inlet 112 of the first connector 11 is connected to the sampling tube 3. The second connection 12 of the recovery device is connected to the secondary pipe 2. Since the second inlet 112 of the first connector 11 is connected to the sampling tube 3, the water vapor in the sampling tube 3 can enter the first cylinder 10 of the recovery device from the second inlet 112, and is subjected to vapor-liquid separation by the separation device 30. When the sampling tube 3 is not filled with high-temperature water vapor and only the mixed liquid flows through the sampling tube 3, the sampling operation is performed, and the switch on the sampling tube 3 is turned on, so that the mixed liquid can be stably discharged from the sampling port.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. 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 recovery unit, with be responsible for (1), auxiliary pipe (2) and sampling tube (3) and all communicate, its characterized in that, recovery unit includes:

the sampling device comprises a first barrel (10), wherein a first joint (11) and a second joint (12) are arranged on the first barrel (10), the first joint (11) comprises a first inlet (111) and a second inlet (112), the first barrel (10) is communicated with a main pipe (1) through the first inlet (111), the second inlet (112) is communicated with a sampling pipe (3), and the first barrel (10) is communicated with an auxiliary pipe (2) through the second joint (12);

the cover body (20) is connected with the first cylinder body (10), and an air release hole (21) is formed in the top of the cover body (20);

-a separation device (30) arranged inside the first cylinder (10), the second joint (12) being located below the separation device (30), the separation device (30) being able to separate the fluid entering into the first cylinder (10) from the first joint (11);

the cover body (40) is arranged in the cover body (20) and is positioned between the air vent hole (21) and the separating device (30), and an exhaust hole (41) is formed in the cover body (40);

the ball body (50) is arranged between the air release holes (21) of the cover body (40), and the ball body (50) can block or open the air release holes (21).

2. The recycling apparatus according to claim 1, wherein the separating means (30) comprises a first baffle (31) and a second cylinder (32) penetrating the first baffle (31), the first baffle (31) is connected to the inner wall of the first cylinder (10), the first baffle (31) divides the first cylinder (10) into an upper chamber and a lower chamber, the inner hole of the second cylinder (32) is communicated with the upper chamber and the lower chamber, the first joint (11) is located between the first baffle (31) and the bottom end of the second cylinder (32), and a space is provided between the bottom of the second cylinder (32) and the bottom of the first cylinder (10).

3. A recovery device according to claim 2, characterized in that the first end of the second cylinder (32) protrudes upwards beyond the first baffle (31), and the first end of the second cylinder (32) is provided with a through hole (321) communicating with the upper chamber.

4. The recycling device according to claim 2, wherein a communication hole (101) is formed at a position where the first joint (11) is communicated with the first cylinder (10), the communication hole (101) is arranged in a staggered manner with respect to the second cylinder (32), a second baffle (13) is further arranged in the first cylinder (10), the communication hole (101) is arranged opposite to the second baffle (13), and the aperture of the communication hole (101) is gradually reduced from the outside of the first cylinder (10) to the inside of the first cylinder (10).

5. The recovery device according to claim 1, characterized in that it further comprises a first filter element (60) and a second filter element (70), said first filter element (60) and said second filter element (70) being each arranged inside said first cartridge (10), said first filter element (60) being located between said separation device (30) and said cover (40), said second filter element (70) being located between said cover (40) and said first filter element (60).

6. The recycling apparatus according to claim 1, further comprising a first tube (80) connected to the top of the cover (20), wherein the inner hole of the first tube (80) is communicated with the air vent (21).

7. A recycling apparatus according to claim 6, characterized in that the inner wall of said first tube (80) is provided with a net structure (81), said first tube (80) being an elbow.

8. The recycling apparatus according to claim 1, wherein the cover (20) is tapered, the air vent hole (21) is disposed on the top of the cover (20), and under the action of the ball (50), a part of the inner wall of the cover (20) can block the ball (50) so that the ball (50) blocks the air vent hole (21).

9. The recycling apparatus according to claim 1,

the second joint (12) comprises a first outlet (121) and a second outlet (122), the first outlet (121) is communicated with the auxiliary pipe (2), the second outlet (122) of the second joint (12) is connected with a second pipe body (14), and a valve (15) is arranged on the second pipe body (14);

the recovery device also comprises a bracket (90) connected to the first cylinder (10).

10. A recycling method, characterized in that the recycling method comprises:

using the recovery device of any one of claims 1 to 9;

the first inlet (111) of the first joint (11) of the recovery device is connected with the main pipe (1), the second inlet (112) of the first joint (11) is connected with the sampling pipe (3), and the second joint (12) of the recovery device is connected with the secondary pipe (2).