CN216273985U - Shale gas single well trial production integrated processing device - Google Patents
Shale gas single well trial production integrated processing device Download PDFInfo
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- CN216273985U CN216273985U CN202123242813.6U CN202123242813U CN216273985U CN 216273985 U CN216273985 U CN 216273985U CN 202123242813 U CN202123242813 U CN 202123242813U CN 216273985 U CN216273985 U CN 216273985U
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Abstract
The utility model discloses a shale gas single-well trial production integrated processing device, and relates to the field of shale gas mining equipment; the tank body is specifically comprised; the tank body is divided into a gas-water two-phase separation cavity and a water cavity by a partition plate, and the gas-water two-phase separation cavity and the water cavity are connected by a water communication pipeline; the gas-water two-phase separation cavity is internally provided with a corrugated plate; a cyclone separator and a mist catching and separating bag are respectively arranged above the gas-water two-phase separation cavities on the left side and the right side of the corrugated plate; an air inlet pipeline is arranged on the cyclone separator; the outside of the mist catching and gas distributing bag is connected with a tubular dryer; the water cavity is provided with a heater, a water outlet and an emptying vertical pipe. Compared with the prior art, the utility model has the beneficial effects that: the method integrates the functions of gas-water two-phase separation, water separation in gas, produced water heating, flash evaporation and hydrocarbon removal pretreatment, produced water loading, overpressure, manual emptying and the like.
Description
Technical Field
The utility model relates to the field of shale gas exploitation, in particular to a shale gas single-well trial exploitation integrated processing device.
Background
In recent years, with the requirement of environmental protection atmospheric environment construction, the national energy policy supports the development of unconventional gas fields, and the development of shale gas, coal bed gas and dense gas is rapid.
At present, exploration and development of unconventional oil and gas resources, particularly shale gas single wells are mostly located in positions with severe geographic environments, are far away from existing infrastructure, and have no existing resources which can be relied on. Therefore, when the treatment is carried out, the environment is polluted by the local open flow, and the corresponding cost burden is generated by the local improvement of the infrastructure.
Therefore, in order to adapt to the development mode of shale gas, a short-flow high-efficiency multifunctional integrated small-sized treatment device needs to be developed so as to realize the on-site separation of produced water, the on-site flash evaporation and emptying of a very small amount of light hydrocarbon and the on-site export sale of shale gas. The shale gas single well trial production is changed from 'in-situ open flow' into 'in-situ treatment and in-situ export sales', and the overall development benefit of the shale gas is improved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a shale gas single-well trial production integrated treatment device which is characterized in that the device integrates the functions of gas-water two-phase separation, gas-water separation, produced water heating, flash evaporation and dealkylation pretreatment, produced water loading, overpressure, manual emptying and the like.
In order to achieve the purpose, the utility model provides the following technical scheme: the shale gas single well trial production integrated processing device comprises a tank body; the tank body is divided into a gas-water two-phase separation cavity and a water cavity by a partition plate, and the gas-water two-phase separation cavity and the water cavity are connected by a water communication pipeline; the gas-water two-phase separation cavity is internally provided with a corrugated plate; a cyclone separator and a mist catching and separating bag are respectively arranged above the gas-water two-phase separation cavities on the left side and the right side of the corrugated plate; an air inlet pipeline is arranged on the cyclone separator; the outside of the mist catching and gas distributing bag is connected with a tubular dryer; the water cavity is provided with a heater, a water outlet and an emptying vertical pipe.
As optimization, the air inlet pipeline enters the cyclone separator along the tangential direction; the upper part of the cyclone separator is provided with an exhaust pipeline, and the bottom of the cyclone separator is provided with a liquid exhaust pipeline and extends into the gas-water two-phase separation cavity; the exhaust pipeline is communicated with a gas-water two-phase separation cavity on the left side of the corrugated plate.
Preferably, a water level regulator is arranged at the water outlet of the water communicating pipeline.
Preferably, the tubular dryer is arranged in a horizontal structure, and the cross section of the tubular dryer is in a continuous S-shaped structure.
As optimization, the corrugated plate is a stainless steel coalescence inclined plate.
As optimization, an emptying pipeline is arranged above the gas-water two-phase separation cavity on the right side of the corrugated plate; and a safety valve is arranged on the emptying pipeline.
As optimization, a condensing pipeline is connected to the emptying pipeline; the condensation pipeline is communicated with the water cavity; and the emptying pipeline and the condensing pipeline are respectively provided with a switch valve.
And preferably, an elevated frame is arranged below the tank body.
Compared with the prior art, the utility model has the following beneficial effects: according to the characteristics of high gas-water ratio and extremely small hydrocarbon content of shale gas single well trial production well fluid, gas-liquid two-phase separation, mist capturing and gas separation and gas drying are integrated into an integrated skid-mounted form, and electric heating flash evaporation is introduced to realize the produced water dealkylation pretreatment. The whole equipment utilizes the pressure of well exhaust gas to realize the in-situ water diversion, in-situ treatment and in-situ sale of the shale gas single well trial production, the gas field trial production is changed from large and full into small and fine, the long flow is changed into short flow, the discharge injection amount is greatly reduced, and the environmental pollution is reduced. The whole process flow of the equipment is simple, the efficiency is high, the cost is low, and the safety performance is high.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the construction of the pipe dryer of the present invention.
The device comprises a tank body 1, a partition plate 2, a gas-water two-phase separation cavity 3, a water cavity 4, a corrugated plate 5, a cyclone separator 6, an air inlet pipeline 7, an exhaust pipeline 8, a liquid discharge pipeline 9, a mist catching and gas distributing bag 10, a tubular dryer 11, an emptying pipeline 12, a condensation pipeline 13, a communicating water pipeline 14, a water level regulator 15, an emptying vertical pipe 16, a water outlet 17, a heater 18 and an overhead 19.
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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The shale gas single well test production integrated treatment device comprises a tank body 1; an elevated frame 19 is arranged below the tank body 1. The tank body 1 is divided into a gas-water two-phase separation cavity 3 and a water cavity 4 by a partition plate 2, and the gas-water two-phase separation cavity 3 is connected with the water cavity 4 through a communicating water pipeline 14; a water level regulator 15 is arranged at the water outlet of the communicating water pipeline 14. The gas-water two-phase separation cavity 3 is internally provided with a corrugated plate 5; the corrugated plate 5 is a coalescence inclined plate made of stainless steel. A cyclone separator 6 and a mist catching and distributing bag 10 are respectively arranged above the gas-water two-phase separation cavity 3 at the left side and the right side of the corrugated plate 5; an air inlet pipeline 7 is arranged on the cyclone separator 6; the outside of the mist catching and gas distributing bag 10 is connected with a tubular dryer 11; the tubular dryer 11 is arranged in a horizontal structure, and the cross section of the tubular dryer 11 is in a continuous S-shaped structure. The water cavity 4 is provided with a heater 18, a water outlet 17 and an emptying vertical pipe 16.
The air inlet pipeline 7 enters the cyclone separator 6 along the tangential direction; an exhaust pipeline 8 is arranged at the upper part of the cyclone separator 6, and an exhaust pipeline 9 is arranged at the bottom of the cyclone separator 6 and extends into the gas-water two-phase separation cavity 3; the exhaust pipeline 8 is communicated with the gas-water two-phase separation cavity 3 on the left side of the corrugated plate 5.
An air release pipeline 12 is arranged above the gas-water two-phase separation cavity 3 on the right side of the corrugated plate 5; and a safety valve is arranged on the emptying pipeline 12. The emptying pipeline 12 is connected with a condensing pipeline 13; the condensation pipeline 13 is communicated with the water cavity 4; and switch valves are arranged on the emptying pipeline 12 and the condensing pipeline 13.
The working principle is as follows:
the two-phase separation process of the shale gas is optimized, the coalescence inclined plate made of stainless steel is adopted for water separation, and the water separation effect of the shale gas is improved under the combined action of the cyclone separator 6; the external gas after oil removal of the mist catching and gas distributing bag 10 is dried and dehydrated by a horizontally arranged tubular dryer 11 and then is sold after reaching the standard.
The produced water with a very small amount of hydrocarbons can be contained in the water cavity 4, the produced water is electrically heated to a temperature above the atmospheric environment temperature through the principle of heating flash evaporation, and hydrocarbon gas is diffused through the vertical pipe with the vent pipe 16, so that the produced water is ensured not to overflow hydrocarbon steam during the hauling of a produced water truck; the water chamber 4 can also be used as a condensate tank before the emptying vertical pipe 16, and the gas-water two-phase separation chamber is led into the water chamber through a condensation pipeline 13 under the condition that the equipment is stopped or is emptied under overpressure, and then is directly emptied after condensate is separated out.
The gas-water ratio of the inlet well stream of the device is 2m3/1000m3The temperature is about 5-15 ℃, and the partial pressure is less than or equal to 6.3 MPa. The water content in the theoretical outlet gas reaches the sales index, wherein the oil-containing particle size is less than or equal to 20 mu m; the oil removal efficiency is more than 99 percent, the water quality of the effluent has the oil content less than or equal to 5mg/L, and the level of safe loading and hauling of the produced water at normal temperature is reached.
The specific process comprises the following steps:
shale gas well fluid with high gas-water ratio enters the cyclone separator 6 from the air inlet pipeline 7 along the tangential direction by means of well discharge pressure after a wellhead throttling device, and gas-liquid primary separation and liquid flow state reforming are carried out. Gas and liquid pass through the stainless steel corrugated plate 5, so that reasonable distribution of the gas and the liquid is realized, and slug flow is eliminated, thereby forming a stable fluid; secondly, the incoming liquid continuously impacts the corrugated plate 5, and the small-particle liquid drops are coalesced, collided and reformed into large particles, so that a stable water layer is formed.
The natural gas primarily separated by the cyclone separator 6 is kept in a stable pressure state in the upper space of the gas-water two-phase separation cavity 3, a stable gas-water interface is favorably formed, the gas stroke distance is increased through structural distribution, and finally the natural gas is dried and purified by the tubular dryer 11 after being deoiled by the mist catching and gas distributing bag 10 for output.
The produced water flows into the water cavity 4 through the communicating water pipeline 14, heating, flash evaporation and hydrocarbon removal are carried out under the heating action of the heater 18, a very small amount of hydrocarbon vapor is discharged through the emptying vertical pipe 16 and the pull rope, and the produced water after hydrocarbon removal is discharged through the water discharge port 17 and is loaded and pulled through the loading crane pipe.
When the gas-water two-phase separation cavity 3 is in an accident state, the emptying treatment can be directly carried out through the emptying pipeline 12.
When equipment is required to be moved and transported, and the gas-water two-phase separation cavity 3 is emptied, gas in the gas-water two-phase separation cavity 3 is introduced into the water cavity 4 through the condensation pipeline 13, the temperature of the water cavity 4 is low due to water storage, the water cavity 4 is used as a condensate tank in front of the emptying vertical pipe 16 at the moment, and after condensate is separated, the condensate can be emptied directly through the emptying vertical pipe 16 and the pull rope.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. Shale gas individual well trial production integration processing apparatus, its characterized in that: comprises a tank body (1); the tank body (1) is divided into a gas-water two-phase separation cavity (3) and a water cavity (4) through a partition plate (2), and the gas-water two-phase separation cavity (3) is connected with the water cavity (4) through a communicating water pipeline (14); a corrugated plate (5) is arranged in the gas-water two-phase separation cavity (3); a cyclone separator (6) and a mist catching and separating bag (10) are respectively arranged above the gas-water two-phase separation cavity (3) at the left side and the right side of the corrugated plate (5); an air inlet pipeline (7) is arranged on the cyclone separator (6); a tubular dryer (11) is connected outside the mist catching and distributing bag (10); the water cavity (4) is provided with a heater (18), a water outlet (17) and an emptying vertical pipe (16).
2. The shale gas single well trial production integrated processing device of claim 1, characterized in that: the air inlet pipeline (7) enters the cyclone separator (6) along the tangential direction; an exhaust pipeline (8) is arranged at the upper part of the cyclone separator (6), and an exhaust pipeline (9) is arranged at the bottom of the cyclone separator (6) and extends into the gas-water two-phase separation cavity (3); the exhaust pipeline (8) is communicated with the gas-water two-phase separation cavity (3) on the left side of the corrugated plate (5).
3. The shale gas single well trial production integrated processing device of claim 1, characterized in that: a water level regulator (15) is arranged at the water outlet of the water communicating pipeline (14).
4. The shale gas single well trial production integrated processing device of claim 1, characterized in that: the tubular dryer (11) is arranged in a horizontal structure, and the cross section of the tubular dryer (11) is of a continuous S-shaped structure.
5. The shale gas single well trial production integrated processing device of claim 1, characterized in that: the corrugated plate (5) is a coalescence inclined plate made of stainless steel.
6. The shale gas single well trial production integrated processing device of claim 1, characterized in that: an emptying pipeline (12) is arranged above the gas-water two-phase separation cavity (3) on the right side of the corrugated plate (5); and a safety valve is arranged on the emptying pipeline (12).
7. The shale gas single well trial production integrated processing device of claim 6, characterized in that: the emptying pipeline (12) is connected with a condensing pipeline (13); the condensation pipeline (13) is communicated with the water cavity (4); and switch valves are arranged on the emptying pipeline (12) and the condensing pipeline (13).
8. The shale gas single well trial production integrated processing device of claim 1, characterized in that: an elevated frame (19) is arranged below the tank body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123242813.6U CN216273985U (en) | 2021-12-22 | 2021-12-22 | Shale gas single well trial production integrated processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123242813.6U CN216273985U (en) | 2021-12-22 | 2021-12-22 | Shale gas single well trial production integrated processing device |
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| Publication Number | Publication Date |
|---|---|
| CN216273985U true CN216273985U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123242813.6U Active CN216273985U (en) | 2021-12-22 | 2021-12-22 | Shale gas single well trial production integrated processing device |
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| CN (1) | CN216273985U (en) |
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2021
- 2021-12-22 CN CN202123242813.6U patent/CN216273985U/en active Active
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