CN215565870U

CN215565870U - Gas well underground vortex drainage gas production tool

Info

Publication number: CN215565870U
Application number: CN202122226609.9U
Authority: CN
Inventors: 唐军; 王茜
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-01-18
Anticipated expiration: 2031-09-15

Abstract

The utility model discloses a gas well underground vortex drainage gas production tool which comprises a seat seal, a guide cylinder, a vortex device and a fishing head which are sequentially arranged from bottom to top, wherein the lower end of the seat seal is provided with a positioning head, the centers of the positioning head, the seat seal and the guide cylinder are all provided with guide pipes, the top end of the interior of each guide pipe is provided with a guide piece at a position right opposite to the bottom of the vortex device, the lower end ring side of the vortex device is provided with a reversing piece with an upward opening, and an annular pressurizing opening is formed between the upper end of the reversing piece and the outer wall of the vortex device. According to the utility model, the diversion piece is in contact with the gas-liquid mixed fluid in the use process and the first diversion groove is arranged in the first diversion groove, so that the gas production efficiency can be effectively ensured, the diversion piece is suitable for long-term use and is not easy to wear, and the energy attenuation of the fluid in the transmission process can be reduced because the resistance to the fluid is small in the use process.

Description

Gas well underground vortex drainage gas production tool

Technical Field

The utility model belongs to the technical field of oil and gas exploitation, and particularly relates to an underground gas well eddy current drainage gas production tool.

Background

The gas field has no boundary water and bottom water, the gas well produced water mainly comes from movable water and condensate water in the stratum, and the stratum energy is mainly used for exploitation at present. With the continuous development of gas fields, the formation pressure is lower and lower, the liquid carrying capacity of gas wells is weakened, and bottom hole liquid accumulation is formed gradually. If effective drainage measures are not taken, the yield of the gas well is reduced, the stable production time is shortened, and the recovery ratio of the gas reservoir is reduced. The vortex drainage gas production technology is a technology for converting turbulent flow fluid into ordered vortex fluid by utilizing the fluid mechanics principle so as to separate gas phase from liquid phase, and the structure of a vortex tool enables the rotation of the fluid to reach an ideal state, so that the effects of improving the liquid discharge capacity of a gas well, reducing the pressure loss of the shaft, reducing the wax deposition, scaling and corrosion of the shaft are achieved, and the stability and yield increase of natural gas exploitation are realized.

The publication number CN205078247U discloses an oil gas well eddy current drainage gas production instrument in pit, including salvage head, swirler, draft tube, seat seal, the locator that from the top down connects gradually, the lower extreme of seat seal is equipped with the feed liquor locating head, the center department of feed liquor locating head, seat seal, draft tube has all corresponded and has seted up central runner, the outside of swirler is equipped with helical blade, the gas outlet has been seted up on the lateral wall of draft tube, the top of draft tube is equipped with centrifugal baffle, the bottom of draft tube is equipped with the flange seat, the guide ring of giving vent to anger is installed in the outside of draft tube. In the implementation process of the scheme, the raised guide strips are arranged on the side surfaces of the centrifugal guide bodies, so that the guide strips are easily abraded when the centrifugal guide bodies are impacted by gas-liquid mixed fluid in the long-term use process, and the gas production efficiency is influenced.

Therefore, a gas well downhole vortex drainage gas production tool is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model provides the gas well underground vortex drainage gas production tool which is suitable for long-term use, is not easy to wear and can effectively guarantee the gas production efficiency.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a gas well is vortex drainage gas production instrument in pit, includes seat ware, draft tube, swirler and the fishing head that from the bottom up set gradually, the lower extreme of seat ware is provided with the positioning head, the honeycomb duct has all been seted up to the center department of positioning head, seat ware and draft tube, the inside top of honeycomb duct is just being provided with the water conservancy diversion piece to the position of swirler bottom, the lower extreme ring side of swirler is provided with the ascending switching-over piece of opening, be provided with annular pressurization mouth between the upper end of switching-over piece and the outer wall of swirler.

In the gas well downhole eddy current drainage gas production tool, the reversing piece comprises a guide rod, the lower end of the guide rod is hemispherical, a first guide groove is formed in the annular side of the guide rod, and the first guide groove is of a spiral structure.

In the gas well underground vortex drainage gas production tool, the upper end of the guide rod is fixedly connected with the rotating shaft, and the upper end of the rotating shaft is rotatably connected with the rotating plate.

In the gas well underground vortex drainage gas production tool, the lower end of the swirler is fixedly connected with the conical table, and the rotating plate is fixedly connected to the bottom of the conical table

In the gas well underground vortex drainage gas production tool, the reversing piece is of a bowl-shaped structure with an upward opening, a cavity is arranged in the reversing piece, and the lower part of the cavity is of a conical structure.

In the gas well underground vortex drainage gas production tool, a second diversion trench is formed in the outer ring side of the swirler and is of a spiral structure.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the diversion piece and the first diversion groove are arranged, in the use process, the diversion piece is contacted with the gas-liquid mixed fluid, and the first diversion groove is arranged in the inner part, so that the abrasion is less, the gas production device is suitable for long-term use and is not easy to abrade, and the gas production efficiency can be effectively ensured;

2. according to the utility model, through the spiral first diversion trench and the spiral second diversion trench, when the gas-liquid mixed fluid contacts with the gas-liquid mixed fluid, the fluid is shunted along a spiral path, a turbulent flow state is changed into a vortex flow state, the gas-liquid is divided into two-phase spiral flows, the liquid is thrown to the wall of the shaft, the gas flows upwards along the center of the shaft in a spiral high speed, and meanwhile, the liquid on the wall of the shaft is taken out;

3. the utility model has the advantages that by arranging the guide rod and the conical table, in the using process, the resistance to the fluid is smaller, the energy attenuation of the fluid during transmission can be reduced, and further by arranging the annular pressurizing port, the kinetic energy of the mixed fluid during air outlet can be effectively improved.

Drawings

FIG. 1 is a schematic structural diagram of a gas well downhole vortex drainage gas production tool according to the present invention;

FIG. 2 is a schematic diagram of the internal structure of a gas well downhole vortex drainage gas production tool provided by the utility model;

FIG. 3 is a schematic structural diagram of a flow guide part of a gas well downhole eddy current drainage gas production tool provided by the utility model;

fig. 4 is an enlarged schematic view of a portion a of fig. 2.

In the figure: 1. a setting device; 2. a draft tube; 3. a swirler; 4. fishing the head; 5. positioning the head; 6. a flow guide pipe; 7. a flow guide member; 8. a reversing member; 9. an annular pressurization port; 10. a guide rod; 11. a first diversion trench; 12. a rotating shaft; 13. a rotating plate; 14. a conical table; 15. a cavity; 16. and a second diversion trench.

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.

Referring to fig. 1-4, a gas well downhole eddy current drainage gas production tool comprises a seat seal 1, a guide cylinder 2, an eddy current device 3 and a fishing head 4 which are sequentially arranged from bottom to top and are coaxially connected with each other, a positioning head 5 for positioning is arranged at the lower end of the seat seal 1, guide pipes 6 for guiding fluid to flow are respectively arranged at the centers of the positioning head 5, the seat seal 1 and the guide cylinder 2, a guide piece 7 for changing the conduction direction of the fluid is arranged at a position, right opposite to the bottom of the eddy current device 3, of the top end of the guide pipe 6, a reversing piece 8 with an upward opening and used for reversing the fluid is arranged on the upper ring side of the guide cylinder 2, and an annular pressurizing port 9 for pressurizing is arranged between the upper end of the reversing piece 8 and the outer wall of the eddy current device 3.

The reversing piece 8 comprises a guide rod 10, the lower end of the guide rod 10 is hemispherical, a first guide groove 11 is formed in the ring side of the guide rod 10, and the first guide groove 11 is of a spiral structure, so that the fluid can be conveniently guided to flow, and meanwhile, the abrasion is reduced.

The upper end of the guide rod 10 is fixedly connected with a rotating shaft 12, the upper end of the rotating shaft 12 is rotatably connected with a rotating plate 13, and the guide rod 10 can rotate relative to the rotating plate 13 through the guide rod 10 and the rotating shaft 12.

The lower end of the swirler 3 is fixedly connected with a conical table 14, and the rotating plate 13 is fixedly connected to the bottom of the conical table 14, so that the barrier to fluid is reduced.

The reversing piece 8 is of a bowl-shaped structure with an upward opening, a cavity 15 is arranged in the reversing piece 8, and the lower part of the cavity 15 is of a conical structure.

The outer ring side of the swirler 3 is provided with a second guide groove 16, and the second guide groove 16 is of a spiral structure and is used for guiding the flow of fluid.

The operating principle of the present invention will now be described as follows:

in the use process, when the flow guide piece 7 is contacted with the gas-liquid mixed fluid, the first flow guide groove 11 is arranged inside the flow guide rod 10, so that the generated abrasion is small, the gas production device is suitable for long-term use and is not easy to abrade, and the gas production efficiency can be effectively ensured; when the first diversion trench 11 and the second diversion trench 16 are contacted with the gas-liquid mixed fluid, the fluid can be diverted along a spiral path, the turbulent flow state is changed into a vortex flow state, the gas and the liquid are divided into two-phase spiral flows, the liquid is thrown to the wall of the shaft, the gas flows upwards along the center of the shaft in a spiral high speed, and the liquid on the wall of the shaft is taken out; in the using process, because the resistance of the guide rod 10 and the conical table 14 in the guide part 7 to the fluid is small, the energy attenuation of the fluid during transmission can be reduced, and further, the kinetic energy of the mixed fluid during air outlet can be effectively improved by arranging the annular pressurizing port 9.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a gas well is vortex drainage gas production instrument in pit, includes seat ware (1), draft tube (2), swirler (3) and salvage head (4) that from the bottom up set gradually, the lower extreme of seat ware (1) is provided with positioning head (5), honeycomb duct (6) have all been seted up to positioning head (5), seat ware (1) and the center department of draft tube (2), its characterized in that, the inside top of honeycomb duct (6) is just provided with water conservancy diversion spare (7) to the position of swirler (3) bottom, the lower extreme ring side of swirler (3) is provided with ascending switching-over piece of opening (8), be provided with annular pressure port (9) between the upper end of switching-over piece (8) and the outer wall of swirler (3).

2. The gas well downhole vortex drainage gas production tool as claimed in claim 1, wherein the reversing member (8) comprises a diversion rod (10), the lower end of the diversion rod (10) is hemispherical, a first diversion trench (11) is formed in the annular side of the diversion rod (10), and the first diversion trench (11) is of a spiral structure.

3. The gas well downhole vortex drainage gas production tool as set forth in claim 2, characterized in that a rotating shaft (12) is fixedly connected to the upper end of the diversion rod (10), and a rotating plate (13) is rotatably connected to the upper end of the rotating shaft (12).

4. A gas well downhole swirl drainage gas production tool as claimed in claim 3, characterized in that the lower end of the swirler (3) is fixedly connected with a conical table (14), and the rotating plate (13) is fixedly connected to the bottom of the conical table (14).

5. A gas well downhole swirl drainage gas production tool as claimed in claim 1, characterized in that the reversing element (8) is a bowl-shaped structure with an upward opening, a cavity (15) is arranged in the reversing element (8), and the lower part of the cavity (15) is a conical structure.

6. A gas well downhole vortex drainage gas production tool as claimed in claim 1, characterized in that the outer annular side of the swirler (3) is provided with a second flow guiding groove (16), and the second flow guiding groove (16) is of a spiral structure.