CN220955516U - Wellhead sand control device - Google Patents
Wellhead sand control device Download PDFInfo
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- CN220955516U CN220955516U CN202323187344.1U CN202323187344U CN220955516U CN 220955516 U CN220955516 U CN 220955516U CN 202323187344 U CN202323187344 U CN 202323187344U CN 220955516 U CN220955516 U CN 220955516U
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- sand
- gas
- control device
- jar
- wellhead
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- 239000004576 sand Substances 0.000 title claims abstract description 157
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 abstract description 68
- 238000004519 manufacturing process Methods 0.000 abstract description 21
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 abstract description 8
- 239000003345 natural gas Substances 0.000 abstract description 7
- 238000005406 washing Methods 0.000 description 21
- 239000010865 sewage Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000035744 Hura crepitans Species 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model relates to a wellhead sand control device, and belongs to the field of natural gas wellhead sand control. The device includes the degritting jar, the degritting jar includes the jar body, is provided with air inlet, gas outlet on the jar body, jar internal a plurality of filter screens of being provided with along the direction interval of admitting air, have the breach between each filter screen and the internal wall of jar that corresponds, the breach staggers in the direction of admitting air and arranges, and each breach forms the gas circulation passageway with air inlet, gas outlet intercommunication. According to the utility model, the plurality of filter screens are arranged in the tank body of the sand removal tank at intervals, and the gaps are arranged between each filter screen and the corresponding inner wall surface of the tank body in a staggered manner in the air inlet direction, so that sand grains can be well intercepted, the influence on the flow of gas is small, continuous and stable gas production can be realized, a good gas and sand separation effect is achieved, and the improvement of the productivity of natural gas is facilitated.
Description
Technical Field
The utility model relates to a wellhead sand control device, and belongs to the field of natural gas wellhead sand control.
Background
Sand fracturing measures are adopted for increasing production in sandstone gas field gas wells, and the fracturing sand forms an airflow channel through supporting stratum cracks. In the gas well exploitation process, stratum gravel and fracturing sand can reach the ground along with production oil gas, when reaching a certain amount, can influence production because of blockking up gathering pipeline, can damage the throttle valve when serious, cause the quick perforation damage of equipment and a large amount of leakage of natural gas, initiate the incident.
The sand prevention method for gas wells at home and abroad mainly comprises underground sand prevention and ground sand prevention. According to the sand control principle and process conditions, the downhole sand control technology is largely classified into mechanical sand control, chemical sand control and sand arch sand control, and the focus of sand control is sand control in the well bore of the gas well. However, the well is not completely fished, the yield of the gas well is too high, and the residual fracturing sand in the well can influence the production of the gas well. Therefore, there is a need for a surface sand control technique to ensure safe and high production of gas wells.
The Chinese patent of the utility model with the authorization number of CN207526452U discloses a sand-proof gas production wellhead device, which comprises a first gas inlet pipe, one end of the first gas inlet pipe is fixedly connected with one side of a filter tank, a first filter screen, a second filter screen and a third filter screen are sequentially and fixedly connected with the inside of the filter tank from left to right, a first funnel, a second funnel and a third funnel are sequentially and fixedly connected with the bottom of the filter tank from left to right, and the bottoms of the first funnel, the second funnel and the third funnel are all fixedly connected with the top of a sand box. The sand and stone that mingles in the petroleum gas is got rid of basically after the tertiary filtration through first filter screen, second filter screen and third filter screen to collect the grit in the grit case simultaneously, reach effective sand control's effect. However, after the sand control device operates for a period of time, sand and stone mixed in petroleum gas inevitably block meshes on a filter screen, so that the gas flow is continuously reduced, and continuous stable gas production is difficult to realize.
Disclosure of utility model
The utility model aims to provide a wellhead sand control device, which solves the problem that the sand control device in the prior art is difficult to realize continuous stable gas production.
In order to achieve the above object, the technical scheme of the present utility model is as follows:
The utility model provides a well head sand control device, includes the degritting jar, the degritting jar includes the jar body, is provided with air inlet, gas outlet on the jar body, be provided with a plurality of filter screens along the inlet direction interval in the jar body, have the breach between each filter screen and the internal wall of jar that corresponds, the breach staggers in the inlet direction and arranges, and each breach forms the gas circulation passageway with air inlet, gas outlet intercommunication.
According to the utility model, the plurality of filter screens are arranged in the tank body of the sand removal tank at intervals, more than two filter screens can intercept sand particles carried in gas, the impact force of the gas and the sand particles on the filter screens can be better dispersed, the resistance of the gas passing through the sand removal tank is reduced, the service life of the filter screens is prolonged, gaps are arranged between each filter screen and the corresponding inner wall surface of the tank body in a staggered manner in the air inlet direction, the gaps are convenient for the gas to pass through directly, even if the gas carries fine sand particles in the gaps, the gas can be intercepted by other filter screens which are arranged in a staggered manner, and the arrangement can intercept the sand particles well, has small influence on the gas flow, can realize continuous and stable gas production, and plays a good role in separating the gas from the sand.
The utility model can be used for the production of the sand-carrying natural gas with large flow and also can be used for the production of small flow.
The aperture of the filter screen can be set to be smaller, sand grains with all particle sizes can be intercepted as much as possible, and the aperture of the filter screen can be set to be the filter screen with the aperture sequentially reduced along the air inlet direction, so that sand grains with different particle sizes can be intercepted conveniently.
Preferably, one of the notches formed by the adjacent two filter screens and the inner wall surface of the tank body is positioned at the upper side, and the other filter screen is positioned at the lower side.
Preferably, the cross section of the tank body is circular, and the filter screen is semicircular with an area larger than one half of the circular area.
In order to further increase the processing flow rate, it is preferable that the number of the sand removal tanks is two or more, and two or more of the sand removal tanks are arranged in parallel. And set up two degritting jars, can regard one of them degritting jar as reserve degritting jar, when being convenient for overhaul, start reserve degritting jar, do not influence gas, sand separation treatment.
In order to improve the separation efficiency, preferably, the filter screen is detachably connected, and an operation port for replacing the filter screen is arranged on the tank body. The operation port can also be used for cleaning sand intercepted in the sand removal tank. After the filter screen is used for a period of time, if the filter screen is blocked by sand, the separation efficiency is reduced more, and the filter screen can be replaced in time.
In order to facilitate cleaning of sand intercepted in the sand removal tank and improve separation efficiency, preferably, a sand washing pipeline is connected to the sand removal tank.
In order to further improve the efficiency of gas and sand separation and improve the service life of the filter screen, preferably, the upstream of the sand removal tank is also connected with a coarse sand removal tank, the bottom in the coarse sand removal tank is provided with a baffle, and a space for gas to pass through is formed between the baffle and the inner wall surface of the top of the coarse sand removal tank.
In order to facilitate cleaning of the intercepted sand grains in the coarse sand removing tank and improve the separation efficiency, a sand washing pipeline is preferably arranged in the coarse sand removing tank.
Drawings
FIG. 1 is a diagram of a wellhead desanding apparatus of example 1 having a desanding tank;
Fig. 2 is a schematic view showing the internal structure of the sand removal tank in example 1;
FIG. 3 is a diagram of a wellhead desanding device of example 1 having two desanding tanks;
FIG. 4 is a view of a wellhead desanding device with one desanding tank of example 2;
FIG. 5 is a diagram of a wellhead desanding device of example 2 having two desanding tanks;
The device comprises a 1-sand removal tank, a 2-first valve, a 3-second valve, a 4-filter screen, a 5-operation port, a 6-first sand flushing pipeline, a 7-first sewage pipeline, an 8-first ball valve, a 9-first check valve, a 10-second check valve, an 11-second ball valve, a 12-coarse sand removal tank, a 13-third valve, a 14-baffle, a 15-second sand flushing pipeline, a 16-second sewage pipeline, a 17-third ball valve, a 18-third check valve, a 19-fourth check valve, a 20-fourth ball valve, a 21-gas collecting pipeline, a 22-gas inlet pipeline and a 23-gas outlet pipeline.
Detailed Description
According to the wellhead sand control device, the filter screens in the sand removal tank are arranged in a staggered manner, gaps are arranged between each filter screen and the inner wall surface of the corresponding tank body in a staggered manner in the air inlet direction, so that the influence on the gas flow is reduced while the sand control effect is improved, continuous and stable gas production is realized, a good gas and sand separation effect is achieved, and the improvement of the productivity of natural gas is facilitated.
The gaps are staggered in the air inlet direction, so that the formed gas circulation channel goes in a zigzag way in the air inlet direction, and sand carried by gas can necessarily enter the corresponding filter screen to be intercepted and deposited.
The technical scheme of the utility model is further described below with reference to the specific embodiments.
1. The specific embodiments of the wellhead sand control device of the present utility model are as follows:
Example 1
The wellhead sand control device of the embodiment, as shown in fig. 1, comprises a sand removal tank 1 connected between a gas production tree and a collection and transmission pipe network, wherein the sand removal tank 1 is used for removing sand carried in the collected gas, pure natural gas is obtained, the effect of separating gas from sand is achieved, the effect of continuously stabilizing gas production is achieved, the sand removal tank comprises a tank body, a gas inlet and a gas outlet are formed in the tank body, a first valve 2 is arranged at the upstream of the gas inlet, and a second valve 3 is arranged at the downstream of the gas outlet; the cross section of the tank body is circular, a plurality of filter screens 4 are arranged in the tank body at intervals along the air inlet direction, the filter screens 4 are semicircular with more than one half of the circular area, as shown in fig. 2, gaps are arranged between each filter screen 4 and the corresponding inner wall surface of the tank body, one of the two adjacent filter screens 4 and the gaps formed by the inner wall surface of the tank body is positioned at the upper side, the other filter screen is positioned at the lower side, and each gap is communicated with the air inlet and the air outlet to form a gas circulation channel; the filter screen 4 can be dismantled and connected, is provided with the operation mouth 5 that is used for the filter screen to change on the jar body, and this operation mouth 5 still can be used for the sand grain of clear up the interception in the degritting jar.
The sand removal tank 1 is connected with a sand washing pipeline, the sand washing pipeline is composed of a first sand washing pipeline 6 and a first sewage draining pipeline 7, the first sand washing pipeline 6 is connected to a sand washing opening at the bottom of the sand removal tank, the other end of the first sand washing pipeline is connected to a sand washing vehicle, the sand washing pipeline is further provided with a first ball valve 8 and a first check valve 9, the first sewage draining pipeline 7 is connected to a sewage draining opening at the bottom of the sand removal tank, the sewage draining pipeline is further provided with a second check valve 10 and a second ball valve 11, the sand washing opening is located at the upstream of a first filter screen in the air inlet direction, the sewage draining opening is located at the downstream of a last filter screen in the air inlet direction, the cleaning effect and efficiency of sand grains are improved conveniently, and high-pressure water on the sand washing vehicle is utilized to wash the sand grains intercepted in the sand removal tank 1 to drain opening for draining.
As shown in fig. 3, in other embodiments, two sand removal tanks 1 of the wellhead sand control device are provided, and the two sand removal tanks are arranged between the gas production tree and the gathering and transportation pipe network in parallel, wherein a gas production pipe 21 connected to the gas production tree is divided into two and is respectively connected to gas inlets of the two sand removal tanks, and the gas treated by the two sand removal tanks is collected on a gas inlet pipe 22, and the gas inlet pipe is connected to the gathering and transportation pipe network.
Example 2
The wellhead sand control device of this embodiment, as shown in fig. 4, includes a coarse sand removal tank 12 and a sand removal tank 1 connected between the gas production tree and the gathering and transportation pipe network, and the coarse sand removal tank 12 is connected in the upstream of the sand removal tank 1, and the coarse sand removal tank 12 is used for removing the sand grains with large grain size in the collected gas, plays the effect of better separating the sand grains with large grain size from the gas, and further improves the capability of continuously stabilizing the gas production.
The coarse sand removing tank 12 comprises a tank body, an air inlet and an air outlet are formed in the tank body, the air inlet is connected to an air collecting pipeline 21 of an air collecting tree, a third valve 13 is arranged on the air collecting pipeline 21, the sand removing tank 1 comprises a tank body, the tank body is provided with the air inlet and the air outlet, the air outlet of the coarse sand removing tank 12 is connected with the air inlet of the sand removing tank 1 through a connecting pipeline, a first valve 2 is arranged on the connecting pipeline, and a second valve 3 is arranged at the downstream of the air outlet of the sand removing tank.
The bottom in the coarse sand removal tank 12 is provided with a baffle plate 14, coarse sand carried in gas is conveniently intercepted, and a space for gas to pass through is formed between the baffle plate 14 and the inner wall surface of the top of the coarse sand removal tank 12. The shape of the baffle 14 is adapted to the cross-sectional shape of the grit removal tank 12, and the area of the baffle 14 is greater than one-half the cross-sectional area of the grit removal tank 12. The baffle plate can better intercept sand grains with large grain diameter and can also allow gas to pass through continuously. The sand has a certain matching effect with the filter screen 4 in the sand removal tank 1, so that the damage and blockage of the filter screen 4 in the sand removal tank 1 by sand with large grain size are reduced, the continuous and stable gas production time can be prolonged, and the service life of the filter screen 4 can be further prolonged.
The sand washing pipeline is arranged in the coarse sand removing tank 12 and consists of a second sand washing pipeline 15 and a second sewage draining pipeline 16, the second sand washing pipeline 15 is connected to a sand washing opening at the bottom of the coarse sand removing tank 12, the other end of the second sand washing pipeline is connected to a sand washing vehicle, a third ball valve 17 and a third check valve 18 are further arranged on the second sand washing pipeline 15, the second sewage draining pipeline 16 is connected to a sewage draining opening at the bottom of the coarse sand removing tank 12, a fourth check valve 19 and a fourth ball valve 20 are further arranged on the sewage draining pipeline, the sand washing opening is located on the upstream of the baffle 14, the sewage draining opening is located on the downstream of the baffle 14, the cleaning efficiency of coarse sand is convenient to improve, and coarse sand intercepted in the coarse sand removing tank 12 is washed to the sewage draining opening by high-pressure water on the sand washing vehicle to drain.
The concrete arrangement in the sand removal tank 1 is the same as that of embodiment 1.
As shown in fig. 5, in other embodiments, two sand removal tanks 1 of the wellhead sand control device are provided, and the two sand removal tanks are arranged between the coarse sand removal tank 12 and the gathering and transportation pipe network in parallel, wherein an air outlet pipeline 23 connected to the coarse sand removal tank 12 is divided into two and is respectively connected to air inlets of the two sand removal tanks, and the air treated by the two sand removal tanks is collected on one air inlet pipeline 22, and the air inlet pipeline is connected to the gathering and transportation pipe network.
Claims (8)
1. The utility model provides a well head sand control device, includes the degritting jar, the degritting jar includes the jar body, is provided with air inlet, gas outlet on the jar body, be provided with a plurality of filter screens along the inlet direction interval in the jar body, its characterized in that has the breach between each filter screen and the internal wall of jar that corresponds, the breach staggers in the inlet direction and arranges, and each breach forms the gas circulation passageway with air inlet, gas outlet intercommunication.
2. The wellhead sand control device of claim 1 wherein one of the notches formed by adjacent filter screens and the inner wall of the canister is located on an upper side and the other is located on a lower side.
3. The wellhead sand control device of claim 1 or 2 wherein the tank cross section is circular and the filter screen is semi-circular with an area greater than one half of a circle.
4. The wellhead sand control device of claim 1 wherein the number of sand removal tanks is two or more and two or more sand removal tanks are arranged side by side.
5. The wellhead sand control device of claim 1 or 2, wherein the filter screen is detachably connected, and an operation port for filter screen replacement is provided on the tank.
6. The wellhead sand control device of claim 1 or 4 wherein a sand wash line is connected to the sand removal tank.
7. The wellhead sand control device of claim 1, 2 or 4, wherein a grit removal tank is further connected upstream of the sand removal tank, a baffle is disposed at the bottom of the grit removal tank, and a space for gas to pass through is formed between the baffle and the inner wall surface of the top of the grit removal tank.
8. The wellhead sand control device of claim 7 wherein a sand wash line is disposed within the coarse sand removal tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323187344.1U CN220955516U (en) | 2023-11-24 | 2023-11-24 | Wellhead sand control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323187344.1U CN220955516U (en) | 2023-11-24 | 2023-11-24 | Wellhead sand control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220955516U true CN220955516U (en) | 2024-05-14 |
Family
ID=91008510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323187344.1U Active CN220955516U (en) | 2023-11-24 | 2023-11-24 | Wellhead sand control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220955516U (en) |
-
2023
- 2023-11-24 CN CN202323187344.1U patent/CN220955516U/en active Active
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