CN114251081A - Natural gas dehydration divides gas package and oil well gas collection pipe network - Google Patents

Abstract

The invention provides a natural gas dehydration gas-distributing bag and an oil well gas-collecting pipe network, wherein the natural gas dehydration gas-distributing bag comprises: a frame body; the tank body is provided with a liquid outlet, a gas inlet and a gas outlet, the tank body is rotatably arranged on the frame body, and the tank body can rotate on the frame body to a first angle or a second angle; with the tank at the first angle, the liquid outlet is located above the tank and the gas outlet is located above the gas inlet; in the case where the tank is at the second angle, the liquid outlet is located below the tank. According to the invention, the technical problems that the gas distribution bag in the prior art is easily frozen during production in winter, so that the gas distribution bag needs to be thawed during liquid drainage, and the labor intensity of workers and potential safety hazards are increased are solved.

Description

Natural gas dehydration divides gas package and oil well gas collection pipe network

Technical Field

The invention relates to the field of petroleum engineering, in particular to a natural gas dehydration gas-distributing bag and an oil well gas-collecting pipe network.

Background

During the production of oil wells, crude oil in the formation is pumped to the tubing by a deep well pump, and during this process, part of the natural gas contained in the crude oil is separated from the crude oil and enters the annular space between the tubing and the casing, called casing gas. In oil field development, recovered well casing gas is an important source of natural gas used in oil production stations.

Because the casing gas contains water vapor components, when the temperature is reduced below the dew point of water in the process of conveying the ground gas collecting pipe network, saturated water vapor in natural gas can be condensed into liquid phase water to be separated out, so that accumulated liquid is generated in pipelines and equipment, and the gas pipeline can be frozen to block the pipeline during production in winter.

In order to solve the problem of freezing pipe blockage, a gas distribution bag is arranged at the starting point of a conveying pipe network, most of water in natural gas is removed through the gas distribution bag, and the gas collection pipe network is ensured to avoid paralysis accidents caused by freezing pipe blockage. When the air distribution bag gathers more water, the water needs to be discharged, a drain valve for discharging the water is arranged on the air distribution bag, and the drain valve is opened during liquid discharge and is kept closed most of the time. During production in winter, the drain valve is easy to freeze, causes to need unfreeze when flowing back, has increased staff intensity of labour and potential safety hazard.

Disclosure of Invention

The invention aims to provide a natural gas dehydration gas-distributing bag and an oil well gas-collecting pipe network, which are used for relieving the technical problems that in the prior art, the gas-distributing bag is easily frozen during production in winter, so that the gas-distributing bag needs to be thawed during liquid drainage, and the labor intensity of workers and potential safety hazards are increased.

The above object of the present invention can be achieved by the following technical solutions:

the invention provides a natural gas dehydration and gas distribution bag, which comprises:

a frame body;

the tank body is provided with a liquid outlet, a gas inlet and a gas outlet, the tank body is rotatably arranged on the frame body, and the tank body can rotate on the frame body to a first angle or a second angle;

with the tank at the first angle, the liquid outlet is located above the tank and the gas outlet is located above the gas inlet; the liquid outlet is located below the tank when the tank is at the second angle.

In a preferred embodiment, the natural gas dehydration and gas distribution bag comprises a liquid discharge valve, a valve pipe body and a valve ball, wherein the valve pipe body is connected to the liquid outlet and is fixedly connected with the tank body; the valve pipe body is provided with a valve ball sealing port, and the drain valve is connected with the valve ball sealing port; the valve ball is arranged in the valve pipe body and can move in the valve pipe body; under the condition that the tank body is positioned at the second angle, the valve ball can move downwards under the action of self gravity to close the valve ball sealing port, and can move upwards to deviate from the valve ball sealing port under the action of buoyancy of water removed by natural gas.

In a preferred embodiment, the valve tube body is provided with a cylindrical tube cavity, and the axis of the cylindrical tube cavity is perpendicular to the axis of the tank body rotating on the frame body; the valve ball is arranged in the cylindrical pipe cavity and provided with a valve ball cylindrical part, and the outer diameter of the valve ball cylindrical part is smaller than the inner diameter of the cylindrical pipe cavity.

In a preferred embodiment, the gas outlet and the liquid outlet are the same outlet provided at an end of the tank.

In a preferred embodiment, the natural gas dehydration and gas distribution bag comprises a balance pipe body and a connecting pipe, the balance pipe body is fixedly connected to the tank body and communicated with the tank body, the balance pipe body is rotatably mounted on the frame body, and the tank body can rotate on the frame body around the axis of the balance pipe body; the connecting pipe is used for communicating the gas outlet with the balance pipe body.

In a preferred embodiment, the air inlet end of the balance pipe body is arranged in the tank body, the air inlet end of the balance pipe body is provided with a first inclined end surface, and the first inclined end surface is arranged in a manner of inclining downwards along the direction of the balance pipe body pointing into the tank body under the condition that the tank body is positioned at the first angle; the first inclined end face is rotatably connected with a turning plate, and the turning plate can be turned to be attached to the first inclined end face under the action of self gravity under the condition that the tank body is positioned at the first angle so as to seal the air inlet end of the balance pipe body; under the condition that the tank body is positioned at the first angle, the turning plate can turn over to be far away from the first inclined end surface under the action of self gravity.

In a preferred embodiment, the natural gas dehydration and gas distribution bag comprises an inlet pipe body coaxially arranged with the balance pipe body, the inlet pipe body is connected to the gas inlet and fixedly connected with the tank body, and the inlet pipe body is rotatably installed on the frame body.

In a preferred embodiment, the gas outlet end of the inlet pipe is disposed in the tank body, the gas outlet end of the inlet pipe has a second inclined end surface, and the second inclined end surface is arranged to be inclined upward along a direction in which the inlet pipe points into the tank body when the tank body is located at the first angle.

In a preferred embodiment, in a case where the tank body is located at the first angle, a side wall of a lower portion of the tank body is provided with an insulating layer.

The invention provides an oil well gas collection pipe network, comprising:

a gas pipeline connected with an annular space between the oil pipe and the casing;

according to the natural gas dehydration and gas distribution bag, the natural gas dehydration and gas distribution bag is installed on the gas transmission pipeline, and natural gas in the gas transmission pipeline flows through the natural gas dehydration and gas distribution bag.

The invention has the characteristics and advantages that:

in the initial state, the tank body is at a first angle, the natural gas flows into the tank body through the gas inlet, flows to the gas outlet in the tank body, flows from bottom to top, and saturated water vapor in the natural gas is condensed into liquid-phase water to be separated out and falls into the tank body. After more water is accumulated in the tank body, the tank body is rotated to a second angle, so that the liquid outlet is positioned below the tank body, and the water in the tank body can be discharged outwards through the liquid outlet.

When first angle, the liquid outlet is located the top of the jar body, can reduce with jar internal water contact of accumulating, avoid being frozen when production in winter, need the technical problem that unfreezes when having solved the flowing back, reduced staff intensity of labour and potential safety hazard.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a natural gas dehydration gas-distribution bag provided by the present invention;

FIG. 2 is a schematic illustration of the natural gas dehydration gas-separation drum of FIG. 1 in a first position;

FIG. 3 is a schematic view of the natural gas dehydration gas-separation drum of FIG. 1 in a second position at the beginning of the drainage phase;

FIG. 4 is a schematic view of the end stage of the water removal of the natural gas dehydration gas-separation drum shown in FIG. 1 in a second position;

FIG. 5 is an enlarged view of a portion of FIG. 1 at A;

fig. 6 is a partial enlarged view of fig. 1 at B;

FIG. 7 is an enlarged view of a portion of FIG. 1 at C;

fig. 8 is a schematic structural view of a valve tube in the natural gas dehydration gas-distribution bag shown in fig. 1;

FIG. 9 is a bottom view of FIG. 8;

FIG. 10 is a right side view of the balance pipe body in the natural gas dehydration gas-distribution bag shown in FIG. 1;

FIG. 11 is a schematic structural diagram of a turning plate in the natural gas dehydration gas-distributing bag shown in FIG. 1;

fig. 12 is a partial enlarged view of fig. 3 at D.

The reference numbers illustrate:

10. a frame body; 11. a support; 12. a foundation; 13. fixing the bolt;

20. a tank body; 21. a heat-insulating layer; 221. a lower moving handle; 222. an upper carrying handle;

31. a gas inlet; 311. an inlet gate; 312. an incoming gas line;

32. a gas outlet; 321. an outlet gate; 322. an air return line; 33. a connecting pipe;

34. a liquid outlet; 35. a drain valve;

41. a valve body; 411. a cylindrical lumen; 42. a valve ball seal port; 43. a valve ball; 431. a valve ball cylindrical portion;

44. an outer valve tube; 45. a valve ball seat; 451. a flow restriction port;

50. a balance pipe body; 51. a first angled end face; 500. the balance pipe body points to the direction in the tank body;

60. an inlet tube body; 61. a second angled end face; 600. the inlet pipe body points to the direction in the tank body;

701. a first rotating mechanism; 702. a second rotating mechanism; 71. a ball bearing; 721. a jacket; 722. an inner sleeve; 731. the slips are put on; 732. a slip is put down; 74. the ball slides and buckles; 75. plugging the hole; 76. a ball mounting hole; 771. a seal ring; 772. a dustproof sealing ring;

781. an upper lock plate; 782. a lower lock plate; 791. a lock receptacle; 792. locking and inserting;

81. turning over a plate; 811. a plate overturning seat; 82. a shaft lever; 83. a limiting table; 84. sealing the protrusion;

90. and (6) a liquid barrel.

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. 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.

Example one

The invention provides a natural gas dehydration and gas distribution bag, as shown in figure 1, comprising: a frame body 10 and a tank body 20; the tank 20 is provided with a liquid outlet 34, a gas inlet 31 and a gas outlet 32, the tank 20 is rotatably mounted on the frame 10, and the tank 20 can rotate on the frame 10 to a first angle or a second angle; with the canister 20 at the first angle, the liquid outlet 34 is located above the canister 20, and the gas outlet 32 is located above the gas inlet 31; with the tank 20 at the second angle, the liquid outlet 34 is located below the tank 20.

In the initial state, the tank 20 is at a first angle, as shown in fig. 1 and 2, the natural gas flows into the tank 20 through the gas inlet 31 and flows into the gas outlet 32 in the tank 20, the saturated water vapor in the natural gas is condensed into liquid phase water and separated out, and the liquid phase water falls into the tank 20. After a large amount of water is accumulated in the tank 20, the tank 20 is rotated to a second angle such that the liquid outlet 34 is located below the tank 20, and the water in the tank 20 can be discharged to the outside through the liquid outlet 34.

At the first angle, as shown in fig. 1 and 2, the liquid outlet 34 is located above the tank 20, so that contact with water accumulated in the tank 20 can be reduced, freezing during winter production is avoided, the technical problem that thawing is needed during liquid drainage is solved, and labor intensity and potential safety hazards of workers are reduced.

Preferably, the axis of rotation of the can 20 on the frame 10 is arranged in a horizontal direction. The gas outlet 32 is located above the gas inlet 31 at the first angle, and specifically, the gas outlet 32 may be located at the middle of the tank 20 and the gas inlet 31 may be located at the lower part of the tank 20 at the first angle; the gas outlet 32 may be provided at the upper portion of the can 20, and the gas inlet 31 may be provided at the middle portion of the can 20.

As shown in fig. 1, the frame body 10 may include a base 12 and a bracket 11, and the bracket 11 may be fixed to the base 12 by a fixing bolt 13; foundation 12 may be a concrete pile. The gas inlet 31 is connected to the gas supply line 312 via an inlet shutter 311, and the gas outlet 32 is connected to the gas return line 322 via an outlet shutter 321. The can body 20 may be cylindrical, and hemispherical portions are respectively provided at both ends of the can body 20; the difference between the first angle and the second angle is 180 degrees, and when the first angle and the second angle are formed, the axes of the cylindrical tank body 20 are arranged along the vertical direction.

In one embodiment of the present invention, the gas outlet 32 and the liquid outlet 34 are the same outlet provided at the end of the tank 20. As shown in fig. 1 and 2, in the first angle, the gas outlet 32 and the liquid outlet 34 are both disposed at the upper portion of the tank 20, the gas inlet 31 is disposed at the middle portion of the tank 20, water accumulates at the lower portion of the tank 20, and natural gas enters from the gas inlet 31, flows upward, is discharged from the gas outlet 32, and returns to the gas collection line. At the second angle, as shown in fig. 3, the water temporarily prevents the gas in the tank 20 from being discharged outward through the gas outlet 32 due to the water accumulated in the tank 20, and simultaneously, the water is discharged outward through the liquid outlet 34. Preferably, a liquid bucket 90 for receiving water drained from the inside of the tank 20 is disposed below the tank 20.

In an embodiment of the present invention, the natural gas dehydration gas-distributing bag includes a balance pipe 50 and a connecting pipe 33, as shown in fig. 1, the balance pipe 50 is fixedly connected to the tank 20 and is communicated with the tank 20, the balance pipe 50 is rotatably mounted on the frame 10, and the tank 20 can rotate on the frame 10 around an axis of the balance pipe 50; the connection pipe 33 communicates the gas outlet 32 with the balance pipe body 50. As shown in fig. 3, at the second angle, the accumulated water in the tank 20 may prevent the gas in the tank 20 from being discharged outwards through the gas outlet 32, and the pressure in the tank 20 may tend to increase because the gas inlet 31 still continuously conveys the natural gas into the tank 20, and by providing the balance pipe 50, the natural gas may be continuously discharged outwards through the balance pipe, which is beneficial to keeping the gas pressure in the tank 20 balanced and stable. The balance pipe body 50 is used as a rotating shaft of the tank body 20, and the structure of the natural gas dehydration and gas distribution bag is simplified.

Further, the air inlet end of the balance pipe 50 is arranged in the tank 20, and the air inlet end of the balance pipe 50 has a first inclined end surface 51, as shown in fig. 1 and 6, when the tank 20 is located at a first angle, the first inclined end surface 51 is arranged in a downward inclination along a direction 500 of the balance pipe pointing into the tank; the first inclined end face 51 is rotatably connected with a turning plate 81, and under the condition that the tank body 20 is positioned at a first angle, the turning plate 81 can be turned over to be attached to the first inclined end face 51 under the action of self gravity so as to seal the air inlet end of the balance pipe body 50; with the can body 20 at the second angle, the flap 81 can be flipped away from the first inclined end face 51 under its own weight. With the structure, when the tank is at the second angle, as shown in fig. 3 and 12, the accumulated water is discharged outwards through the liquid outlet 34, the gas outlet 32 is sealed by the accumulated water, the turning plate 81 automatically deviates from the balance pipe 50 under the action of the gravity of the turning plate, and the gas in the tank 20 can be discharged outwards through the balance pipe 50, so that the gas pressure in the tank 20 is kept stable; when the tank body 20 is at the first angle, the turning plate 81 automatically seals the balance pipe body 50 under the action of self gravity, so that the natural gas is discharged through the gas outlet 32, and the natural gas in the tank body 20 moves from bottom to top, thereby being beneficial to the condensation and separation of water vapor in the natural gas.

As shown in fig. 12, the air inlet end of the balance tank 20 is provided with a flap seat 811, the flap 81 is mounted on the flap seat 811 through a shaft rod 82, and the flap 81 can rotate on the flap seat 811 around the shaft rod 82. Preferably, at the first angle, the shaft 82 is disposed along the horizontal direction, and the shaft 82 is located on the upper side of the first inclined end surface 51; at the second angle, the shaft 82 is disposed in the horizontal direction, and the shaft 82 is located at the lower side of the first inclined section. In order to limit the angle of the flap 81 that is turned downward when the flap is at the second angle, as shown in fig. 10 and 12, a limit stop 83 is provided below the first inclined end surface 51, and the lower end of the flap 81 can abut against the limit stop 83.

Further, the plate surface of the flap 81 is provided with a sealing protrusion 84, as shown in fig. 12, the sealing protrusion 84 can be adapted to the opening of the air inlet end of the balance pipe 50. Preferably, as shown in fig. 11 and 12, the sealing projection 84 has an ellipsoidal shape.

In an embodiment of the present invention, the natural gas dehydration gas-distribution package includes an inlet pipe 60 coaxially disposed with the balance pipe 50, the inlet pipe 60 is connected to the gas inlet 31 and fixedly connected to the tank 20, the inlet pipe 60 is rotatably installed on the frame 10, and the inlet pipe 60 serves as a rotation shaft of the tank 20, thereby simplifying the structure of the natural gas dehydration gas-distribution package. As shown in fig. 1, the balance pipe 50 supports the can 20 together with the inlet pipe 60, improving the structural stability of the can 20.

Further, the end of giving vent to anger of entry body 60 is located in jar body 20, the end of giving vent to anger of entry body 60 has second inclined end face 61, under jar body 20 was located the condition of first angle, second inclined end face 61 along the directional jar internal direction 600 tilt up setting of body of entry body, like this, the natural gas enters into jar body 20 from the end of giving vent to anger of entry body 60, the natural gas can slope downflow, then turn to upflow, be favorable to the natural gas to expand and scatter in jar body 20, and be favorable to the steam condensation in the natural gas to separate out.

Specifically, the balance pipe 50 is mounted on the frame 10 through the first rotating mechanism 701, as shown in fig. 1 and 6, the first rotating mechanism 701 is connected between the outlet gate 321 and the balance pipe 50, specifically, the first rotating mechanism 701 includes a ball 71, an outer sleeve 721 and an inner sleeve 722, the outer sleeve 721 is fixed on the frame 10, the outlet gate 321 is fixedly connected to the left end of the outer sleeve 721 shown in fig. 6, the right end of the inner sleeve 722 shown in fig. 6 is fixedly connected to the balance pipe 50, the outer sleeve 721 is sleeved outside the inner sleeve 722, and a plurality of balls 71 are disposed between the inner sleeve 722 and the outer sleeve 721, and the inner sleeve 722 can rotate in the outer sleeve 721. The outer sleeve 721 may be fixed to the frame 10 by the lower slips 732 and the upper slips 731; the balls 71 can be installed between the inner sleeve 722 and the outer sleeve 721 through the ball sliders 74, the hole plugs 75 and the ball installation holes 76; preferably, a sealing ring 771 is disposed between the left end of the inner sleeve 722 shown in fig. 6 and the outer sleeve 721, and a dust sealing ring 772 is disposed between the right end of the outer sleeve 721 shown in fig. 6 and the inner sleeve 722.

The inlet tube body 60 is mounted to the housing 10 by the second rotating mechanism 702. As shown in fig. 1 and 7, the second rotating mechanism 702 is connected between the inlet gate 311 and the inlet pipe 60, specifically, the second rotating mechanism 702 includes a ball 71, an outer sleeve 721 and an inner sleeve 722, the outer sleeve 721 is fixed on the frame 10, the inlet gate 311 is fixedly connected to the right end of the outer sleeve 721 shown in fig. 7, the left end of the inner sleeve 722 shown in fig. 7 is fixedly connected to the inlet pipe 60, the outer sleeve 721 is sleeved outside the inner sleeve 722, and a plurality of balls 71 are disposed between the inner sleeve 722 and the outer sleeve 721, and the inner sleeve 722 can rotate inside the outer sleeve 721. The outer sleeve 721 may be fixed to the frame 10 by the lower slips 732 and the upper slips 731; the balls 71 can be installed between the inner sleeve 722 and the outer sleeve 721 through the ball sliders 74, the hole plugs 75 and the ball installation holes 76; preferably, a sealing ring 771 is disposed between the right end of the inner sleeve 722 shown in fig. 7 and the outer sleeve 721, and a dust sealing ring 772 is disposed between the left end of the outer sleeve 721 shown in fig. 7 and the inner sleeve 722.

The existing gas distribution bag has frequent water drainage, natural gas is discharged while water is drained, and the casing gas contains highly toxic hydrogen sulfide. Therefore, there are the following problems: (a) the new environmental protection law and the enterprise safety regulation forbid the atmospheric emission of hydrogen sulfide gas, so the existing gas distribution bag loses the function; (b) because the existing gas distribution bag is forbidden to discharge and lose the effect, the gas collection pipe network loses dehydration maintenance during production in winter, and the normal gas collection production cannot be realized due to the freezing pipe blockage; (c) because the gas collecting pipe network is mostly in the paralyzed state of the freezing blocked pipe in winter, the gas shortage of the oil production station needs to buy a large amount of natural gas to maintain production, and the cost is increased.

Through analysis, the inventor finds that the reason for discharging the water and the natural gas is that: at the beginning of the drainage, the water in the tank 20 will prevent the natural gas from flowing out through the liquid outlet, and the natural gas in the tank 20 is less discharged out through the liquid outlet; as the water is drained, the water in the tank 20 is gradually reduced, the water pressure at the liquid outlet is reduced, and more natural gas flows out through the liquid outlet together with the water.

Therefore, the inventor further improves the natural gas dehydration gas-separation bag: the natural gas dehydration and gas distribution bag comprises a liquid discharge valve 35, a valve pipe body 41 and a valve ball 43, as shown in fig. 1 and 5, the valve pipe body 41 is connected to the liquid outlet 34 and is fixedly connected with the tank body 20; the valve pipe body 41 is provided with a valve ball sealing port 42, and the drain valve 35 is connected with the valve ball sealing port 42; the valve ball 43 is arranged in the valve tube body 41 and can move in the valve tube body 41; with the tank 20 at the second angle, the valve ball 43 can move downward under its own weight to close the valve ball seal port 42, and the valve ball 43 can move upward under the buoyancy of the water that has been shed from the natural gas to deviate from the valve ball seal port 42.

At the second angle, the drain valve 35 is opened, and at the beginning of the draining process, as shown in fig. 3, the water in the tank 20 enters into the valve tube 41, the valve ball 43 is subjected to the buoyancy of the tank 20, which overcomes the gravity of the ball to move the valve ball 43 upward and away from the valve ball sealing port 42, and the water in the tank 20 can be drained outward through the valve ball sealing port 42 and the drain valve 35. As the water is drained, the water in the tank 20 gradually decreases, and when the water cannot pass through the valve ball 43 and the buoyancy force applied to the valve ball 43 is not enough to overcome the gravity force applied by the valve ball 43, as shown in fig. 4, the valve ball 43 moves downward to abut against the valve ball sealing port 42, so as to close the valve ball sealing port 42, and prevent the natural gas from being discharged through the liquid discharge port and the drain valve 35.

Further, the valve tube 41 has a cylindrical tube cavity 411, and the axis of the cylindrical tube cavity 411 is perpendicular to the axis of the tank 20 rotating on the frame 10; a valve ball 43 is disposed within cylindrical lumen 411, valve ball 43 having a valve ball cylindrical portion 431, the outer diameter of valve ball cylindrical portion 431 being smaller than the inner diameter of cylindrical lumen 411. The valve ball cylindrical part 431 is arranged, so that the valve ball 43 can move smoothly in the cylindrical cavity 411; the outer diameter of the valve ball cylindrical portion 431 is smaller than the inner diameter of the cylindrical tube cavity 411 so that the water in the tank 20 can flow toward the valve ball sealing port 42 through the annular space between the inner wall of the cylindrical tube cavity 411 and the outer wall of the valve ball cylindrical portion 431.

In order to facilitate the water in the valve body to flow into the valve body 41, as shown in fig. 8 and 9, the side wall of the valve body 41 is provided with a plurality of through grooves, and the plurality of through grooves are distributed along the circumference; the diapire of valve body 41 is equipped with a plurality of through-holes, and the diapire of valve body 41 is equipped with 4 through-holes.

Further, the natural gas dehydration and gas distribution bag comprises a valve outer pipe 44, the valve outer pipe 44 is arranged at the liquid outlet 34 and is fixedly connected with the tank body 20, the valve pipe body 41 is fixedly arranged in the valve outer pipe 44, and fluid in the tank body 20 can flow into the valve outer pipe 44 through the liquid outlet 34 and then flow into the valve pipe body 41. The valve body 41 is provided with an outer tube outlet to which the connecting tube 33 is connected. Furthermore, the gas dehydration and distribution package of natural gas comprises a valve ball seat 45, the valve ball seat 45 is fixedly connected to the valve tube body 41, the valve ball sealing port 42 is arranged on the valve ball seat 45, the valve ball seat 45 is provided with a flow restriction port 451, and the drain valve 35 is fixedly connected to the valve ball seat 45 and is communicated with the valve ball sealing port 42 through the flow restriction port 451.

In one embodiment of the present invention, the sidewall of the lower portion of the can body 20 is provided with an insulating layer 21 in a case where the can body 20 is positioned at a first angle, so as to reduce freezing of water in the can body 20 during winter production. Specifically, the insulation layer 21 includes an asbestos sheet and a glass cloth, and the asbestos sheet is wound around the can body 20 with the glass cloth.

As shown in fig. 1, the natural gas dehydration gas-distributing bag is provided with a locking mechanism, the locking mechanism comprises an upper locking plate 781, a lower locking plate 782, a locking socket 791 and a locking plug 792, the upper locking plate 781 and the lower locking plate 782 are both fixed on the inlet pipe 60 and are distributed on two opposite sides of the inlet pipe 60, the locking plug 792 is mounted on the frame 10 through the locking socket 791, the upper locking plate 781 and the lower locking plate 782 are respectively provided with a locking hole matched with the locking plug 792, when the tank body 20 is positioned at a first angle, as shown in fig. 2, the locking plug 792 is inserted into the locking socket 791 and the upper locking plate 781 to prevent the tank body 20 from rotating on the frame 10 and lock the position of the tank body 20; when the can 20 is at the second angle, as shown in fig. 3 and 4, the locking socket 792 is inserted through the locking socket 791 and the lower lock plate 782 to prevent the can 20 from rotating on the frame 10 and lock the position of the can 20. Preferably, the can body 20 is provided with a lower handle 221 and an upper handle 222, and both the lower handle 221 and the upper handle 222 are fixed to the can body 20 and distributed on opposite sides of the inlet tube 60.

In order to make the structure of the natural gas dehydration gas-distributing bag clearer and facilitate the implementation of the natural gas dehydration gas-distributing bag by a person skilled in the art, the following specific description is made on the connection mode of the natural gas dehydration gas-distributing bag: in the natural gas dehydration and gas distribution bag shown in fig. 1, a base 12 and a bracket 11 are fixed by fixing bolts 13. The outer sleeve 721 is in threaded connection with the outlet gate 321, and the outer sleeve 721 is in threaded connection with the inlet gate 311; the outlet gate 321 is threaded with the return air line 322 and the incoming air line 312 is threaded with the inlet gate 311. The outer sleeve 721 is inserted into the inner sleeve 722, the outer sleeve 721 is inserted into the ball slider 74, the outer sleeve 721 is inserted into the sealing ring 771, the dust-proof sealing ring 772 is inserted into the outer sleeve 721, the dust-proof sealing ring 772 is inserted into the inner sleeve 722, and the balls 71 are inserted into the outer sleeve 721 and the inner sleeve 722. The support 11 is welded with the lower slip 732, the outer sleeve 721 is connected with the lower slip 732 through bolts, the outer sleeve 721 is connected with the upper slip 731 through bolts, and the outer sleeve 721 is connected with the plug 75 through threads. The inlet tube 60 and the inner sleeve 722, the inlet tube 60 and the upper locking plate 781, the inlet tube 60 and the tank 20, and the inlet tube 60 and the lower locking plate 782 are welded to each other. The tank 20 and the lower handle 221, the tank 20 and the upper handle 222, and the tank 20 and the valve outer tube 44 are welded, the upper slip 731 is welded to the lock socket 791, and the connection tube 33 is welded to the valve outer tube 44.

The valve tube body 41 is inserted and connected with the valve ball 43; the valve tube body 41 and the valve outer tube 44, and the valve tube body 41 and the valve ball seat 45 are respectively connected by screw threads. The drain valve 35 is connected with the valve ball seat 45 through screw threads; the balance tube 50 and the inner sleeve 722, the balance tube and the body turning plate seat 811, the balance tube 50 and the tank body 20, and the balance tube 50 and the connecting tube 33 are respectively welded. Shaft lever 82 and flap seat 811, and shaft lever 82 and flap 81 are inserted and connected respectively, and lock 792 and upper lock plate 781, lock 792 and lower lock plate 782, and lock 792 and lock socket 791 are inserted and connected respectively.

Example two

The invention provides an oil well gas collection pipe network, which comprises: the gas pipeline is connected with an annular space between the oil pipe and the sleeve, the natural gas dehydration gas distribution bag is arranged on the gas pipeline, natural gas in the gas pipeline flows through the natural gas dehydration gas distribution bag, so that water vapor in the natural gas is condensed and separated out, accumulated liquid is prevented from being caused in the pipeline and equipment, and freezing and pipe blockage of the gas pipeline during production in winter is reduced.

The above description is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims (10)

1. A natural gas dehydration divides gas package, its characterized in that includes:

a frame body;

the tank body is provided with a liquid outlet, a gas inlet and a gas outlet, the tank body is rotatably arranged on the frame body, and the tank body can rotate on the frame body to a first angle or a second angle;

with the tank at the first angle, the liquid outlet is located above the tank and the gas outlet is located above the gas inlet;

the liquid outlet is located below the tank when the tank is at the second angle.

2. The natural gas dehydration and gas distribution package according to claim 1, wherein the natural gas dehydration and gas distribution package comprises a drain valve, a valve tube body and a valve ball, the valve tube body is connected to the liquid outlet and is fixedly connected with the tank body;

the valve pipe body is provided with a valve ball sealing port, and the drain valve is connected with the valve ball sealing port; the valve ball is arranged in the valve pipe body and can move in the valve pipe body;

under the condition that the tank body is positioned at the second angle, the valve ball can move downwards under the action of self gravity to close the valve ball sealing port, and can move upwards to deviate from the valve ball sealing port under the action of buoyancy of water removed by natural gas.

3. The natural gas dehydration and gas distribution bag according to claim 2, wherein the valve tube body is provided with a cylindrical tube cavity, and the axis of the cylindrical tube cavity is perpendicular to the axis of the tank body rotating on the frame body;

the valve ball is arranged in the cylindrical pipe cavity and provided with a valve ball cylindrical part, and the outer diameter of the valve ball cylindrical part is smaller than the inner diameter of the cylindrical pipe cavity.

4. The natural gas dehydration gas-distribution bag according to claim 1, wherein the gas outlet and the liquid outlet are the same outlet provided at the end of the tank.

5. The natural gas dehydration and gas distribution package according to claim 4, comprising a balance pipe body and a connecting pipe, wherein the balance pipe body is fixedly connected to the tank body and communicated with the tank body, and is rotatably mounted on the frame body, and the tank body can rotate on the frame body around the axis of the balance pipe body;

the connecting pipe is used for communicating the gas outlet with the balance pipe body.

6. The natural gas dehydration gas-distributing bag according to claim 5, wherein the gas inlet end of the balancing pipe body is arranged in the tank body, the gas inlet end of the balancing pipe body is provided with a first inclined end surface, and the first inclined end surface is arranged in a downward inclination manner along the direction of the balancing pipe body pointing into the tank body under the condition that the tank body is positioned at the first angle;

the first inclined end face is rotatably connected with a turning plate, and the turning plate can be turned to be attached to the first inclined end face under the action of self gravity under the condition that the tank body is positioned at the first angle so as to seal the air inlet end of the balance pipe body;

under the condition that the tank body is positioned at the first angle, the turning plate can turn over to be far away from the first inclined end surface under the action of self gravity.

7. The natural gas dehydration and gas distribution package according to claim 5, comprising an inlet tube coaxially disposed with the balance tube, wherein the inlet tube is connected to the gas inlet and fixedly connected to the tank body, and the inlet tube is rotatably mounted on the frame body.

8. The natural gas dehydration and gas distribution bag according to claim 7, wherein the gas outlet end of the inlet pipe body is arranged in the tank body, the gas outlet end of the inlet pipe body has a second inclined end surface, and the second inclined end surface is arranged in an upward inclined manner along a direction of the inlet pipe body pointing into the tank body under the condition that the tank body is positioned at the first angle.

9. The natural gas dehydration and gas distribution package according to claim 1, wherein the side wall of the lower portion of the tank body is provided with an insulating layer in the case where the tank body is located at the first angle.

10. An oil well gas collection pipe network, comprising:

a gas pipeline connected with an annular space between the oil pipe and the casing;

the natural gas dehydration and gas distribution package of any one of claims 1 to 9, which is mounted to the gas transmission pipeline, wherein natural gas in the gas transmission pipeline flows through the natural gas dehydration and gas distribution package.

Images