CN212296328U

CN212296328U - Foam discharging agent structure for gas field

Info

Publication number: CN212296328U
Application number: CN201922419494.8U
Authority: CN
Inventors: 孙九立; 王宏娟; 王魁江; 沈喜兰; 马增超; 杨玉春; 王驰; 陈小寒
Original assignee: Xi'an Suny New Materials Co ltd
Current assignee: Xi'an Suny New Materials Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-01-05
Anticipated expiration: 2029-12-27

Abstract

The utility model belongs to the technical field of gas field foam removal, and relates to a foam removal agent structure for a gas field, which comprises a first shell and a second shell wrapped outside the first shell, wherein the first shell and the second shell are both spheroids with hollow interiors, and a cavity is arranged between the first shell and the second shell; liquid is arranged in the cavity; the connecting pipe is arranged between the second shell and the cavity, one end of the connecting pipe is connected with the inner edge of the second shell, and the other end of the connecting pipe is contacted with the outer edge of the first shell; the first shell is internally provided with a diaphragm and is divided into two chambers by the diaphragm, and the other end of the connecting pipe is in contact with the outer edge of the diaphragm. The utility model provides a defoaming agent is difficult to glue the wall, and can reach the shaft bottom through self gravity to can produce the air current and mix, arrange the bubble effectual.

Description

Foam discharging agent structure for gas field

Technical Field

The utility model belongs to the technical field of the bubble is arranged in the gas field, a row's of bubbles bubble agent structure for gas field is related to.

Background

The natural gas production well can be divided into a vertical well, a horizontal well, a branch well and the like according to the application, the natural gas well, particularly the natural gas well in the middle and later production periods, has reduced formation pressure, reduced gas yield and reduced carrying capacity, and part of formation water entering a shaft can be retained at the bottom of the well and generate accumulated liquid; the liquid column pressure of the accumulated liquid and the formation pressure may reach static balance, so that the production condition is deteriorated, the yield is reduced, even the production is stopped due to flooding, and therefore, the accumulated liquid must be discharged in time by adopting a water and gas drainage process technology.

The main drainage measures at the present stage of the gas field comprise foam drainage, plunger drainage, inter-well interconnected annular gas lift drainage technology, high-pressure nitrogen gas lift, small-diameter pipe foam drainage, foam drainage and other process combination and the like; the foam discharging process principle is that a large amount of low-density water-containing foam is generated in a shaft by utilizing the foam effect, the dispersion effect, the drag reduction effect and the washing effect of a foam discharging agent or a foam discharging rod and by means of stirring caused by other process reproduction processes, so that effusion is reduced.

However, the prior art has the following problems in bubble removal: for a vertical well, the foam discharging agent is thrown from a well bore opening and can reach a well bottom through self gravity, for some horizontal wells, the foam discharging agent is mostly in a rod-shaped structure, is easy to stick to a wall when thrown into the well, is light in weight, cannot reach the joint of the bottom of an inclined well section and a horizontal section through self gravity, and cannot meet foam drainage gas production of the horizontal well; secondly, the foaming capacity of the foam discharging agent is low under the condition that no airflow is stirred at the bottom of the well, and the gas production effect of the foam discharging agent is influenced.

SUMMERY OF THE UTILITY MODEL

To current defoaming agent structure be stained with the wall easily, can not dead weight to the shaft bottom or arrange the technical problem that the bubble ability is low, the utility model provides a defoaming agent is difficult to stick the wall, and can reach the shaft bottom through self gravity, can produce the air current and stir, arranges the bubble effectual.

In order to realize the purpose, the utility model discloses a technical scheme is:

a foam discharging agent structure for a gas field comprises a first shell, wherein the first shell is a spheroid or a spheroid-like body with a hollow inside.

Further, the foam discharging agent structure for the gas field further comprises a second shell wrapped outside the first shell, and the structure of the second shell is the same as that of the first shell; a cavity is arranged between the first shell and the second shell; and the cavity is filled with a liquid foam discharging agent.

Further, the foam discharging agent structure for the gas field further comprises a connecting pipe arranged between the second shell and the cavity; one end of the connecting pipe is connected with the inner edge of the second shell, and the other end of the connecting pipe is in contact with the outer edge of the first shell.

Further, a diaphragm is arranged inside the first shell, and the first shell is divided into two chambers through the diaphragm; the other end of the connecting pipe is in contact with the outer edge of the diaphragm.

Further, the number of the through holes is one or two.

Further, the membrane is a water-soluble membrane.

Further, the second shell is made of a slow-dissolving coating material.

Further, the thickness of the second shell is 1-4 mm.

The utility model has the advantages that:

1. the utility model discloses in, the exterior structure of second casing and first casing is spheroid or spheroid, when putting in like the shaft bottom, its contact with the shaft bottom is the point contact, and area of contact is little to can reduce the risk that the defoaming agent structure is stained with the wall, the defoaming agent can reach the shaft bottom along with the defoaming agent structure, and it is effectual to arrange the bubble.

2. The utility model discloses in, there is the cavity between second casing and the first casing, and is provided with liquid in the cavity, like this, the density of defoaming agent structure is greater than the density of water, and the back in the well is thrown to the defoaming agent structure, because the action of gravity, first casing and second casing can be hugged closely to liquid, produces rolling friction between first casing and the liquid for the continuous roll down of defoaming agent structure, until falling in the shaft bottom, satisfy the row's bubble and the gas production of horizontal well.

3. The utility model also comprises a connecting pipe arranged between the second shell and the cavity; one end of the connecting pipe is connected with the inner edge of the second shell, and the other end of the connecting pipe is contacted with the outer edge of the first shell; the second shell is made of a slow-soluble coating material; ferric chloride and potassium carbonate are respectively filled in the two cavities of the first shell; after the defoaming agent fell into the bottom of the well, the second casing was dissolved, and ponding entered through the connecting pipe and made its dissolve with the diaphragm contact, and iron chloride and potassium carbonate contact reaction in the first casing produced heat and bubble to the air current that produces is outwards spout from the connecting pipe and is makeed the defoaming agent to stir, and in the effect of stirring, first casing was dissolved, and produced the foam, improved the defoaming rate of utilization.

Drawings

Fig. 1 is a schematic structural view of the foam discharging agent provided by the present invention;

wherein:

1-second shell, 2-liquid defoaming agent, 3-first shell, 4-connecting pipe, 5-potassium carbonate, 6-ferric chloride, and 7-diaphragm.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings and examples.

Example 1

Referring to fig. 1, the foam discharging agent structure for gas field provided by the present invention comprises a first shell 3 and a second shell 1 wrapped outside the first shell 3, wherein the first shell 3 and the second shell 1 are both spheroids or spheroids with hollow interiors; and a cavity is arranged between the first shell 3 and the second shell 1.

Referring to fig. 1, in the present embodiment, the second casing 1 is made of a slow-soluble coating material; the thickness of the second shell 1 is 1-4 mm; the first shell 3 is a hollow spherical solid foam remover.

The defoaming agent structure for gas field that this embodiment provided, in-process by throwing into the well bottom, because its second casing 1 and first casing 3 are the spheroid, when falling, its contact with the wall of a well is the point contact, area of contact is little, cause and be stained with the probability of wall and can reduce greatly, it is low to be stained with the wall risk, the defoaming agent can reach the well bottom along with the defoaming agent structure together, at this moment, ponding contacts with the defoaming agent structure, second casing 1 dissolves, first casing 3 (solid defoaming agent) dissolve, the drainage rate of utilization is good, make the hydrops reduce, improve the gas production rate.

Example 2

Further, in the present embodiment, a liquid defoaming agent 2 is provided in the cavity between the first housing 3 and the second housing 1.

In this embodiment, when the foam discharging agent structure is put into the well bottom, because liquid foam discharging agent 2, make the bulk density of foam discharging agent structure be greater than the density of water, after foam discharging agent structure throws into water, because the action of gravity, second casing 1 and first casing 3 can be hugged closely to liquid foam discharging agent 2, can produce rolling friction between liquid foam discharging agent 2 and the second casing 1 simultaneously, make the foam discharging agent whole roll down until reaching the well bottom, foam discharging agent overall structure contacts with well bottom ponding, after second casing 1 dissolves, liquid foam discharging agent 2 plays the foam discharging effect with first casing 3 (solid foam discharging agent) together, improve the foam discharging effect, improve the gas production rate.

Example 3

Furthermore, in this embodiment, the center of the inside of the first housing 3 is separated by a diaphragm 7 into two chambers, one chamber is filled with ferric chloride 6, the other chamber is filled with potassium carbonate 5, the present invention further includes a connecting pipe 4 disposed between the second housing 1 and the cavity, the number of the connecting pipe 4 is one or two, and the second housing 1 is made of a slow-soluble coating material, so that the time of dissolution in water is long.

Specifically, referring to fig. 1, the two connecting pipes 4 are symmetrically arranged at two sides of the diaphragm 7, one end of each connecting pipe 4 is connected with the inner edge of the second shell 1, the other end of each connecting pipe 4 is in contact with the outer edge of the diaphragm 7, and the diaphragm 7 is a water-soluble diaphragm.

In this embodiment, when the defoaming agent structure was arranged in the well, the bubble was arranged the device because self gravity can sink to slope well section bottom and horizontal segment junction, second casing 1 slowly dissolves the back, the hydrops gets into and makes it constantly dissolve with water-soluble diaphragm 7 contact from connecting pipe 4, after water-soluble diaphragm 7 is dissolved,

iron chloride

6 and 5 reaction production heats of potassium carbonate and bubbles, the inside pressure of first casing 3 is big, make two strands of air currents from connecting pipe 4 constantly outwards blowout and take place stirring effect, under the effect of stirring, make first casing 3 (solid bubble row agent) dissolve, and produce the foam and act on the hydrops, the hydrops reduces, improve the gas production rate.

The defoaming agent structure that this embodiment provided, the risk of being stained with the wall is reduced to spherical structure, can roll to the shaft bottom by the gravity of self under the liquid defoaming agent effect simultaneously, satisfies the demand of different wells, and the structural connecting pipe of defoaming agent can produce stirring effect, improves and arranges the bubble effect to realize the improvement of gas production efficiency.

Claims

1. A foam remover structure for gas fields, characterized in that: the foam discharging agent structure for the gas field comprises a first shell (3), wherein the first shell (3) is a spheroid or a spheroid-like body with a hollow inside;

the foam discharging agent structure for the gas field further comprises a second shell (1) wrapped outside the first shell (3), and the structure of the second shell (1) is the same as that of the first shell (3); a cavity is arranged between the first shell (3) and the second shell (1); the cavity is filled with a liquid foam discharging agent (2); the second shell (1) is made of a slow-dissolving coating material.

2. The foam venting agent structure for gas fields according to claim 1, wherein: the foam discharging agent structure for the gas field further comprises a connecting pipe (4) arranged between the second shell (1) and the cavity; one end of the connecting pipe (4) is connected with the inner edge of the second shell (1), and the other end of the connecting pipe (4) is in contact with the outer edge of the first shell (3).

3. The foam venting agent structure for gas fields according to claim 2, wherein: a diaphragm (7) is arranged in the first shell (3), and the first shell (3) is divided into two chambers through the diaphragm (7); the other end of the connecting pipe (4) is contacted with the outer edge of the diaphragm (7).

4. The foam venting agent structure for gas fields according to claim 3, wherein: the number of the connecting pipes (4) is one or two.

5. The foam venting agent structure for gas fields according to claim 3, wherein: the diaphragm (7) is a water-soluble diaphragm.

6. The foam venting agent structure for gas fields according to claim 5, wherein: the thickness of the second shell (1) is 1-4 mm.