CN114737945A - Efficient sand removal separation metering integrated sledge adaptive to variable working conditions - Google Patents
Efficient sand removal separation metering integrated sledge adaptive to variable working conditions Download PDFInfo
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- CN114737945A CN114737945A CN202210472809.9A CN202210472809A CN114737945A CN 114737945 A CN114737945 A CN 114737945A CN 202210472809 A CN202210472809 A CN 202210472809A CN 114737945 A CN114737945 A CN 114737945A
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- sand
- flow transmitter
- liquid
- discharge port
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- 239000004576 sand Substances 0.000 title claims abstract description 134
- 238000000926 separation method Methods 0.000 title claims abstract description 30
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 102
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 239000000203 mixture Substances 0.000 claims abstract description 33
- 238000004140 cleaning Methods 0.000 claims abstract description 22
- 238000011001 backwashing Methods 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims description 38
- 238000007790 scraping Methods 0.000 claims description 28
- 230000007246 mechanism Effects 0.000 claims description 19
- 238000012856 packing Methods 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 239000003595 mist Substances 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 15
- 239000007789 gas Substances 0.000 description 98
- 239000012071 phase Substances 0.000 description 37
- 230000009286 beneficial effect Effects 0.000 description 12
- 239000007791 liquid phase Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000007599 discharging Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/35—Arrangements for separating materials produced by the well specially adapted for separating solids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The invention discloses a high-efficiency desanding, separating and metering integrated sledge adaptive to variable working conditions, which comprises a gas-liquid separator, a plurality of cyclone desanders, a lower cylinder and an input pipe for inputting a solid-liquid-gas three-phase mixture; the cyclone desander is provided with a first water inlet used for communicating with the input pipe, an overflow port used for communicating with the gas-liquid separator and a sand discharge port used for communicating with one end of the lower barrel, and the sand discharge port is provided with a cleaning device. The invention integrates the functions of high-efficiency cyclone desanding, gas-liquid separation and metering, sand discharge, back washing and the like; the plurality of cyclone desanders can efficiently desand under different gas well working conditions, can ensure continuous desanding and does not influence the gas well productivity; the first flow transmitter and the second flow transmitter have different measuring ranges and respectively measure the gas with different flow sizes, so that the measuring precision is improved on the basis of ensuring the measurement.
Description
Technical Field
The invention relates to the technical field of natural gas desanding, in particular to a high-efficiency desanding, separating and metering integrated sledge adaptive to variable working conditions.
Background
The compact gas reservoir (shale gas) is usually put into production after large sand fracturing, and fractured sand is discharged in a discharge and production period and a normal production process due to incomplete fracturing flow-back and rapid production, so that the normal production of a gas well, the yield of the gas well and the safety of ground equipment and pipelines are seriously influenced.
In the prior art, the desander and the separation metering device are usually arranged separately, and the desander and the separation metering device are narrow in adaptive working condition range and cannot meet the requirements of efficient phase separation and accurate metering when the working condition of the gas well changes, so that the production safety of the gas well and the accuracy and the productivity of dynamic analysis are influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the efficient sand removal, separation and metering integrated sledge which is large in adaptive working condition range and adaptive to variable working conditions.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the high-efficiency desanding, separating and metering integrated sledge adaptive to variable working conditions comprises a gas-liquid separator, a plurality of cyclone desanders, a lower cylinder and an input pipe for inputting a solid-liquid-gas three-phase mixture;
the cyclone desander is provided with a first water inlet for communicating with the input pipe, an overflow port for communicating with the gas-liquid separator and a sand discharge port for communicating with one end of the lower barrel, and the sand discharge port is provided with a cleaning device;
the gas-liquid separator is provided with a first gas transmission port, a second water inlet used for communicating the input pipe with the overflow port and a liquid outlet used for communicating the other end of the lower cylinder, the first gas transmission port is respectively communicated with a first flow transmitter and a second flow transmitter, the first flow transmitter and the second flow transmitter are both communicated with the output pipe, and the measuring ranges of the first flow transmitter and the second flow transmitter are different;
a first valve, a second valve, a third valve and a fourth valve are respectively arranged between the input pipe and the first water inlet, between the input pipe and the second water inlet, between the overflow port and the second water inlet and between the sand discharge port and the lower cylinder body;
a first back flush water pipe and a second back flush water pipe are respectively arranged in the gas-liquid separator and the lower cylinder body.
The beneficial effects of adopting the above technical scheme are: the cyclone desander is used for separating sand from a solid-liquid-gas three-phase mixture, wherein the solid-liquid-gas three-phase mixture enters the cyclone desander from the first water inlet and separates the sand from the solid-liquid-gas three-phase mixture, the separated sand is discharged from the sand discharge port, and the residual liquid-gas two-phase mixture is discharged from the overflow port; the gas-liquid separator is used for separating the liquid-gas two-phase mixture into a liquid phase and a gas phase, wherein the liquid-gas two-phase mixture enters the gas-liquid separator from the second water inlet and separates the gas phase from the liquid-gas two-phase mixture, the separated liquid phase is discharged from the liquid discharge port, and the gas phase is discharged from the first gas transmission port; the lower barrel is used for collecting sand discharged from the sand discharge port and a liquid phase discharged from the liquid discharge port;
the rotational flow desanders are arranged in plurality, so that the sand can be efficiently removed under different gas well working conditions; when the gas well is less in output, a small amount of cyclone desanders can be opened; when the gas well produces more sand, more cyclone desanders can be opened;
in addition, a plurality of cyclone desanders are arranged, so that continuous desanding can be ensured, and the productivity of a gas well is not influenced; when a sand discharge port of the working cyclone desander accumulates more sand, the cyclone desander can be closed and the other cyclone desander can be opened to remove the sand;
the input pipe is communicated with the second water inlet, when the gas well does not produce sand, the liquid-gas two-phase mixture can be directly input into the gas-liquid separator through the input pipe for gas-liquid separation, so that the treatment procedures are reduced, and the productivity and the production efficiency are improved;
the first flow transmitter and the second flow transmitter have different measuring ranges and respectively measure the gas with different flow rates; when the gas flow is large, a flow transmitter with a large measurement range is used for measurement; when the gas flow is small, a flow transmitter with a small measurement range is used for measurement; therefore, on the basis of ensuring the measurement, the precision of the measurement is improved.
The cleaning device is arranged on the sand discharge port and used for cleaning the sand discharge port to prevent sand from blocking the sand discharge port; the first back-flushing water pipe and the second back-flushing water pipe respectively flush the gas-liquid separator and the lower cylinder body, and the gas-liquid separator and the lower cylinder body are cleaned conveniently.
Furthermore, a plurality of convex hemispheroids are uniformly arranged on the inner wall of the cyclone desander, a filter screen is arranged at the lower end of the overflow port in a sliding manner, and a floater is arranged on the filter screen.
The beneficial effects of adopting the above technical scheme are: the inner wall of the cyclone desander is provided with the convex hemispheroids, so that the contact area between the inner wall and the solid-liquid-gas three-phase mixture is increased, when the solid-liquid-gas three-phase mixture rotates along the inner wall, a part of sand can be attached to the convex hemispheroids, and the sand separation efficiency is improved;
the filter screen is used for filtering fine sand and preventing the fine sand from entering the overflow port; but because fine sand possibly blocks the filter screen, the filter screen is arranged on the overflow port in a sliding way, and the filter screen is provided with a floater; when sand is not attached to the filter screen, the filter screen slightly floats upwards under the influence of the floater, and when sand is attached to the filter screen, the filter screen sinks downwards under the influence of gravity, so that the sand on the filter screen partially falls off, and the filter screen begins to float upwards; the up-and-down reciprocating motion of the filter screen forms vibration, so that the sand attached to the filter screen falls off, the filter screen is prevented from being plugged by fine sand, and the normal operation of the cyclone sand remover is ensured.
Furthermore, the cleaning device comprises a plurality of linear driving mechanisms which are uniformly arranged along the circumferential direction of the sand discharge port, the output ends of the linear driving mechanisms are fixedly connected with sliding blocks, the moving direction of the sliding blocks is the same as the height direction of the sand discharge port, and a plurality of groups of push-pull assemblies are uniformly arranged on the sliding blocks along the moving direction;
every group push-and-pull subassembly is provided with the scraping bar including articulating two sets of gyro wheels on the slider between two sets of gyro wheels, and the middle part of scraping the bar articulates on the sand discharge opening, and scrapes the one end that the gyro wheel was kept away from to the bar and extends to in the sand discharge opening.
The beneficial effects of adopting the above technical scheme are: the linear driving mechanism drives the sliding block to move, so that the roller on the sliding block pushes or pulls the scraping rod to rotate around a hinge point on the sand discharge port; after the rotational flow sand remover separates sand, sand accumulated at the sand discharge port is easy to block the sand discharge port due to hardening, and the plurality of linear driving mechanisms are driven simultaneously, so that the plurality of scraping rods scrape the sand close to the side wall of the sand discharge port simultaneously, the hardening state of the sand is broken, and the sand falls naturally under the influence of gravity; in addition, a plurality of groups of push-pull assemblies are uniformly arranged on the sliding block along the movement direction, so that the scraping rods with different heights scrape sand with different heights, and the anti-blocking effect is ensured.
Furthermore, the middle part of the scraping rod is a round block, a first rotating groove matched with the round block is arranged on the sand discharging port, second rotating grooves used for providing a rotating space are arranged at two ends of the first rotating groove, travel switches are arranged on two side walls of the second rotating groove, and the travel switches and the linear driving mechanism are electrically connected with a first controller.
The beneficial effects of adopting the above technical scheme are: the middle part of the scraping rod is a circular block, a first rotating groove matched with the circular block is arranged on the sand discharge port, and second rotating grooves used for providing rotating space are arranged at two ends of the first rotating groove, so that the scraping rod can rotate smoothly, and a gap is not generated between the middle part of the scraping rod and the sand discharge port during rotation, so that liquid in the cyclone desander is prevented from flowing out of the sand discharge port;
travel switches are arranged on two side walls of the second rotating groove, so that the automation degree is improved, and manual control is reduced; when the scraping rod contacts the travel switch, the linear driving mechanism runs in the reverse direction, so that the output end of the linear driving mechanism moves up and down in a reciprocating manner, and the scraping rod scrapes up and down in a reciprocating manner.
Further, a third water inlet is arranged in the tangential direction of the cyclone desander and is arranged above the first water inlet.
The beneficial effects of adopting the above technical scheme are: a third water inlet is arranged in the tangential direction of the cyclone desander and is used for cleaning the cyclone desander; when the cyclone desander needs to be cleaned, water with pressure is injected from the third water inlet, so that water flow rotates along the inner wall of the cyclone desander, and sand attached to the inner wall of the cyclone desander is washed away; and the third water inlet is arranged above the first water inlet, so that the third water inlet is prevented from influencing the rotational flow movement of the solid-liquid-gas three-phase mixture.
Furthermore, a plurality of filler plates are vertically arranged in the middle of the inner cavity of the gas-liquid separator, and a plurality of through holes facing the filler plates are formed in one end of the second water inlet; the first gas transmission port is provided with a mist catcher.
The beneficial effects of adopting the above technical scheme are: the middle part of the inner cavity of the gas-liquid separator is vertically provided with a plurality of packing plates, and the first gas transmission port is provided with a mist catcher, so that the gas-liquid separation efficiency is improved; one end of the second water inlet is provided with a plurality of through holes facing the packing plate, so that the liquid-gas two-phase mixture coming out of the second water inlet moves or flows towards the packing plate, the liquid-gas two-phase mixture is filled and separated as soon as possible, and the gas-liquid separation efficiency is improved.
Further, the inclination angles of the through holes are sequentially increased from bottom to top.
The beneficial effects of adopting the above technical scheme are: the inclination from the bottom up of a plurality of through-holes increases in proper order, makes the two-phase mixture of liquid gas that the second water inlet came out move towards the different positions of filled plate, makes the different positions simultaneous workings of filled plate, improves gas-liquid separation efficiency.
Furthermore, one end of the gas-liquid separator is provided with a liquid level transmitter, one end of the gas-liquid separator, which is far away from the second water inlet, is provided with a second gas transmission port, the second gas transmission port is communicated with a third flow transmitter through a first electromagnetic valve, the third flow transmitter is communicated with an output pipe, and the first electromagnetic valve and the liquid level transmitter are both electrically connected with a second controller; a second electromagnetic valve is arranged between the third flow transmitter and the output pipe, and a fifth valve is arranged between the third flow transmitter and the second gas transmission port; the outlets of the first backwashing water pipes are respectively arranged at two ends of the gas-liquid separator, and one end of the gas-liquid separator close to the second gas transmission port is provided with a weir plate.
The beneficial effects of adopting the above technical scheme are: the liquid level transmitter senses the liquid level of the gas-liquid separator, when the liquid level is lower than the weir plate, the controller opens the first electromagnetic valve, and the separated gas is output from the second gas transmission port and is metered by the third flow transmitter; when the liquid level is higher than the weir plate, the first electromagnetic valve is immediately closed; the outlets of the first backwashing water pipes are respectively arranged at two ends of the gas-liquid separator, so that backwashing water flows to two ends of the gas-liquid separator, the backwashing water drives the separated liquid phase to flow to the liquid outlet, the gas-liquid separator is cleaned, and the weir plate prevents the liquid phase or the backwashing water from entering the second gas transmission port.
Furthermore, the lower cylinder body is provided with a first inner cavity used for communicating the sand discharge port and a second inner cavity used for communicating the liquid discharge port, and a separation valve is arranged between the first inner cavity and the second inner cavity; the end of the first inner cavity far away from the separation valve is provided with a cleaning port, and the outlet of the second backwashing water pipe is arranged at the end of the second inner cavity far away from the separation valve.
The beneficial effects of adopting the above technical scheme are: the first inner cavity collects sand falling from the sand discharge port, and the second inner cavity collects separated liquid phase; when the gas-liquid separator performs gas-liquid separation, the separating valve is closed, and sand is prevented from entering the gas-liquid separator from the second inner cavity; and when and only when cleaning, opening the separation valve, discharging back washing water through the second back washing water pipe, and driving the liquid in the second inner cavity and the sand in the first inner cavity by the back washing water and discharging the liquid and the sand from the cleaning opening.
Furthermore, a third electromagnetic valve and a fourth electromagnetic valve are respectively arranged between the first flow transmitter and the output pipe and between the second flow transmitter and the output pipe; and a sixth valve and a seventh valve are respectively arranged between the first flow transmitter and the first gas transmission port and between the second flow transmitter and the first gas transmission port.
The beneficial effects of adopting the above technical scheme are: a third electromagnetic valve and a fourth electromagnetic valve are respectively arranged between the first flow transmitter and the output pipe and between the second flow transmitter and the output pipe; and a sixth valve and a seventh valve are respectively arranged between the first flow transmitter and the first gas transmission port and between the second flow transmitter and the first gas transmission port, so that the switching of the gas output pipeline and the flow transmitter is facilitated.
The invention has the beneficial effects that:
1. the device integrates the functions of efficient cyclone desanding, gas-liquid separation metering, sand discharging, back flushing and the like;
2. the plurality of cyclone desanders can effectively desalt under different gas well working conditions, can ensure continuous desanding and does not influence the gas well productivity;
3. the first flow transmitter and the second flow transmitter have different measurement ranges and respectively measure the gas with different flow rates, so that the measurement precision is improved on the basis of ensuring the measurement;
4. when the sand is not produced in the gas well, the liquid-gas two-phase mixture can be directly input into the gas-liquid separator through the input pipe for gas-liquid separation, so that the treatment procedures are reduced, and the productivity and the production efficiency are improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a cyclone desander in an embodiment of the invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a partial enlarged view of FIG. 2 at B;
FIG. 5 is a schematic view showing the structure of a gas-liquid separator in the embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at C;
FIG. 7 is a schematic structural view of a cyclone sand remover according to another embodiment of the present invention;
FIG. 8 is a schematic view showing the installation of a cyclone sand remover in accordance with another embodiment of the present invention;
wherein, 1, an input pipe, 2, a first valve, 3, a third valve, 4, a cyclone desander, 401, a first water inlet, 402, a hemisphere, 403, an overflow port, 404, a third water inlet, 405, a filter screen, 406, a linear driving mechanism, 407, a sand discharge port, 408, a floater, 409, a roller, 410, a slide block, 411, a scraping rod, 412, a second rotating groove, 413, a round block, 414, a stroke switch, 415, a round steel pin, 416, a pressing piece, 417, an outer shell, 5, a second valve, 6, a gas-liquid separator, 601, a second water inlet, 602, a filling plate, 603, a first gas transmission port, 604, a second gas transmission port, 605, a weir plate, 606, a liquid discharge port, 607, a through hole, 7, a mist catcher, 8, a sixth valve, 9, a second flow transmitter, 10, a first flow transmitter, 11, a third electromagnetic valve, 12, a fourth electromagnetic valve, 13, an output pipe, 14, a second electromagnetic valve, 15. the device comprises a third flow transmitter 16, a first electromagnetic valve 17, a liquid level transmitter 18, a seventh valve 19, a lower cylinder 20, a first backwashing water pipe 21, a second backwashing water pipe 22, a second inner cavity 23, a partition valve 24, a fourth valve 25, a first inner cavity 26 and a cleaning port.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in figure 1, the high-efficiency desanding, separating and metering integrated sledge adaptive to variable working conditions comprises a gas-liquid separator 6, a plurality of cyclone desanders 4, a lower cylinder 19 and an input pipe 1 for inputting a solid-liquid-gas three-phase mixture;
the cyclone desander 4 is provided with a first water inlet 401 for communicating the input pipe 1, an overflow port 403 for communicating the gas-liquid separator 6 and a sand discharge port 407 for communicating one end of the lower barrel 19, and the sand discharge port 407 is provided with a cleaning device;
the gas-liquid separator 6 is provided with a first gas transmission port 603, a second water inlet 601 for communicating the input pipe 1 with the overflow port 403 and a liquid discharge port 606 for communicating the other end of the lower barrel 19, the first gas transmission port 603 is respectively communicated with a first flow transmitter 10 and a second flow transmitter 9, the first flow transmitter 10 and the second flow transmitter 9 are both communicated with the output pipe 13, the measuring ranges of the first flow transmitter 10 and the second flow transmitter 9 are different, and the measuring ranges of the first flow transmitter 10 and the second flow transmitter 9 are one larger or one smaller;
a first valve 2, a second valve 5, a third valve 3 and a fourth valve 24 are respectively arranged between the input pipe 1 and the first water inlet 401, between the input pipe 1 and the second water inlet 601, between the overflow port 403 and the second water inlet 601, and between the sand discharge port 407 and the lower barrel 19;
the gas-liquid separator 6 and the lower cylinder 19 are respectively provided with a first backwashing water pipe 20 and a second backwashing water pipe 21.
The cyclone desander 4 is used for separating sand from a solid-liquid-gas three-phase mixture, wherein the solid-liquid-gas three-phase mixture enters the cyclone desander 4 from the first water inlet 401 and separates the sand from the solid-liquid-gas three-phase mixture, the separated sand is discharged from the sand discharge port 407, and the remaining liquid-gas two-phase mixture is discharged from the overflow port 403; the gas-liquid separator 6 is used for separating the liquid-gas two-phase mixture into a liquid phase and a gas phase, wherein the liquid-gas two-phase mixture enters the gas-liquid separator 6 from the second water inlet 601 and separates the gas phase from the liquid-gas two-phase mixture, the separated liquid phase is discharged from the liquid outlet 606, and the gas phase is discharged from the first gas transmission port 603; the lower cylinder 19 is used for collecting sand discharged from the sand discharge port 407 and a liquid phase discharged from the liquid discharge port 606;
the rotational flow desanders 4 are arranged in plurality and can efficiently desalt under different gas well working conditions; when the gas well is less in output, a small amount of cyclone desanders 4 can be opened; when the gas well produces more, more cyclone desanders 4 can be opened;
in addition, a plurality of cyclone desanders 4 are arranged, so that continuous desanding can be ensured, and the productivity of a gas well is not influenced; when the sand discharge port 407 of the working cyclone desander 4 accumulates more sand, the cyclone desander 4 can be closed and the other cyclone desander 4 can be opened for desanding;
the input pipe 1 is communicated with the second water inlet 601, when sand does not appear in the gas well, a liquid-gas two-phase mixture can be directly input into the gas-liquid separator 6 through the input pipe 1 for gas-liquid separation, so that the treatment procedures are reduced, and the productivity and the production efficiency are improved; at this time, the first valve 2 and the third valve 3 are closed, and the second valve 5 and the fourth valve 24 are opened; when the cyclone sand remover 4 works, the first valve 2 and the third valve 3 are opened, and the second valve 5 and the fourth valve 24 are closed;
the measurement ranges of the first flow transmitter 10 and the second flow transmitter 9 are different, and the gas with different flow rates is measured respectively; when the gas flow is large, a flow transmitter with a large measurement range is used for measurement; when the gas flow is small, measuring by using a flow transmitter with a small measuring range; therefore, on the basis of ensuring the measurement, the precision of the measurement is improved.
A cleaning device is arranged on the sand discharge port 407 and used for cleaning the sand discharge port 407 to prevent sand from blocking the sand discharge port 407; the first backwashing water pipe 20 and the second backwashing water pipe 21 respectively wash the gas-liquid separator 6 and the lower cylinder 19, so that the gas-liquid separator 6 and the lower cylinder 19 can be cleaned conveniently;
in addition, valves may be disposed between the first gas transfer port 603 and the output pipe 13, and between the second gas transfer port 604 and the output pipe 13.
As an optional embodiment, as shown in fig. 2, a plurality of convex hemispheroids 402 are uniformly arranged on the inner wall of the cyclone desander 4, so that the contact area between the inner wall and the solid-liquid-gas three-phase mixture is increased, when the solid-liquid-gas three-phase mixture rotates along the inner wall, a part of sand can be attached to the convex hemispheroids 402, and the sand separation efficiency is improved;
as shown in fig. 3, a filter screen 405 is slidably disposed at the lower end of the overflow port 403, and a float 408 is disposed on the filter screen 405; the filter screen 405 is used for filtering fine sand to prevent the fine sand from entering the overflow port 403; however, since fine sand may block the screen 405, the screen 405 is slidably disposed on the overflow port 403, and the float 408 is disposed on the screen 405; when sand is not attached to the filter screen 405, the filter screen 405 slightly floats upwards under the influence of the floater 408, and when sand is attached to the filter screen 405, the filter screen 405 sinks downwards under the influence of gravity, so that the sand on the filter screen 405 falls off, and the filter screen 405 starts to float upwards again; the up-and-down reciprocating motion of the filter screen 405 forms vibration, so that the sand attached to the filter screen 405 falls off, the filter screen 405 is prevented from being blocked by fine sand, and the normal operation of the cyclone sand remover 4 is ensured.
As an alternative embodiment, as shown in fig. 4, the cleaning device includes a plurality of linear driving mechanisms 406 uniformly arranged along the circumferential direction of the sand discharge port 407, the linear driving mechanisms 406 may be hydraulic cylinders, the output end of the linear driving mechanism 406 is fixedly connected with a sliding block 410, the moving direction of the sliding block 410 is the same as the height direction of the sand discharge port 407, and the sliding block 410 is uniformly provided with a plurality of sets of push-pull assemblies along the moving direction;
each group of push-pull assemblies comprises two groups of idler wheels 409 which are hinged on the sliding block 410, a scraping rod 411 is arranged between the two groups of idler wheels 409, the middle part of the scraping rod 411 is hinged on the sand discharge port 407, and one end, far away from the idler wheels 409, of the scraping rod 411 extends into the sand discharge port 407.
The linear driving mechanism 406 drives the sliding block 410 to move, so that the roller 409 on the sliding block 410 pushes or pulls the scraping rod 411 to rotate around a hinge point on the sand discharge port 407; after the cyclone desander 4 separates the sand, the sand accumulated at the sand discharge port 407 is easy to block the sand discharge port 407 due to hardening, and the plurality of linear driving mechanisms 406 are driven simultaneously, so that the plurality of scraping rods 411 scrape the sand close to the side wall of the sand discharge port 407 simultaneously, the hardened state of the sand is broken, and the sand falls naturally under the influence of gravity; in addition, a plurality of groups of push-pull assemblies are uniformly arranged on the sliding block 410 along the moving direction, so that the scraping rods 411 with different heights scrape sand with different heights, and the anti-blocking effect is ensured.
As an alternative embodiment, the middle part of the scraping rod 411 is a circular block 413, the sand outlet 407 is provided with a first rotating groove matched with the circular block 413, and both ends of the first rotating groove are provided with second rotating grooves 412 for providing rotating space, so that the scraping rod 411 can rotate smoothly, and a gap is not generated between the middle part of the scraping rod 411 and the sand outlet 407 during rotation, thereby preventing the liquid in the cyclone desander 4 from flowing out therefrom; in order to ensure the sealing performance between the middle part of the scraping rod 411 and the sand outlet 407, a sealing ring may be disposed between the circular block 413 and the first rotating groove.
Both side walls of the second rotating groove 412 are provided with a travel switch 414, and the travel switch 414 and the linear driving mechanism 406 are both electrically connected with the first controller, so that the automation degree is improved, and the manual control is reduced; the first controller can be a PCB board loaded with a C51 singlechip; when the scraping bar 411 contacts the stroke switch 414, the linear driving mechanism 406 is operated in reverse, so that the output end of the linear driving mechanism 406 reciprocates up and down, and the scraping bar 411 reciprocates up and down to scrape.
As an optional embodiment, a third water inlet 404 is arranged in the tangential direction of the cyclone desander 4 and is used for cleaning the cyclone desander 4; when the cyclone desander 4 needs to be cleaned, water with pressure is injected from the third water inlet 404, so that water flow rotates along the inner wall of the cyclone desander 4, and sand attached to the inner wall of the cyclone desander 4 is washed away; the third water inlet 404 is arranged above the first water inlet 401, so that the third water inlet 404 is prevented from influencing the rotational flow of the solid-liquid-gas three-phase mixture.
As an alternative embodiment, as shown in fig. 5 and 6, a plurality of packing plates 602 are vertically arranged in the middle of the inner cavity of the gas-liquid separator 6, and the mist catcher 7 is arranged on the first gas transmission port 603, which is beneficial to improving the gas-liquid separation efficiency; one end of the second water inlet 601 is provided with a plurality of through holes 607 facing the packing plate 602, so that the liquid-gas two-phase mixture coming out of the second water inlet 601 moves or flows towards the packing plate 602, the liquid-gas two-phase mixture is filled and separated as soon as possible, and the gas-liquid separation efficiency is improved.
As an optional implementation manner, the inclination angles of the plurality of through holes 607 are sequentially increased from bottom to top, so that the liquid-gas two-phase mixture from the second water inlet 601 moves toward different parts of the packing plate 602, so that the different parts of the packing plate 602 work simultaneously, and the gas-liquid separation efficiency is improved.
As an optional implementation manner, one end of the gas-liquid separator 6 is provided with a liquid level transmitter 17, one end of the gas-liquid separator 6, which is away from the second water inlet 601, is provided with a second gas transmission port 604, the second gas transmission port 604 is communicated with a third flow transmitter 15 through a first electromagnetic valve 16, the third flow transmitter 15 is communicated with the output pipe 13, the first electromagnetic valve 16 and the liquid level transmitter 17 are both electrically connected with a second controller, and the second controller can be a PCB board loaded with a C51 single chip microcomputer; a second electromagnetic valve 14 is arranged between the third flow transmitter 15 and the output pipe 13, and a fifth valve is arranged between the third flow transmitter 15 and the second gas transmission port 604; the outlets of the first backwash water pipe 20 are respectively arranged at two ends of the gas-liquid separator 6, and one end of the gas-liquid separator 6 close to the second gas transmission port 604 is provided with a weir plate 605.
The liquid level transmitter 17 senses the liquid level of the gas-liquid separator 6, when the liquid level is lower than the weir plate 605, the controller opens the first electromagnetic valve 16, and the separated gas is output from the second gas transmission port 604 and is metered by the third flow transmitter 15; when the liquid level is higher than the weir plate 605, the first electromagnetic valve 16 is immediately closed; outlets of the first backwash water pipe 20 are respectively disposed at both ends of the gas-liquid separator 6, so that backwash water flows to both ends of the gas-liquid separator 6, the separated liquid phase is driven by the backwash water to flow to the liquid outlet 606, thereby cleaning the gas-liquid separator 6, and the weir plate 605 prevents the liquid phase or the backwash water from entering the second gas transmission port 604.
As an alternative embodiment, the lower cylinder 19 is provided with a first inner cavity 25 for communicating with the sand discharge port 407 and a second inner cavity 22 for communicating with the liquid discharge port 606, and a separation valve 23 is arranged between the first inner cavity 25 and the second inner cavity 22; the end of the first inner cavity 25 far away from the separating valve 23 is provided with a cleaning port 26, and the outlet of the second backwashing water pipe 21 is arranged at the end of the second inner cavity 22 far away from the separating valve 23.
The first inner cavity 25 collects the sand falling from the sand discharge port 407, and the second inner cavity 22 collects the separated liquid phase; when the gas-liquid separator 6 performs gas-liquid separation, the partition valve 23 is closed to prevent sand from entering the gas-liquid separator 6 from the second inner cavity 22; if and only if cleaning is to be carried out, the partition valve 23 is opened and backwash water is discharged through the second backwash water pipe 21, which drives the liquid in the second inner chamber 22 and the sand in the first inner chamber 25 and is discharged from the cleaning port 26.
As an alternative embodiment, a third electromagnetic valve 11 and a fourth electromagnetic valve 12 are respectively arranged between the first flow transmitter 10 and the output pipe 13 and between the second flow transmitter 9 and the output pipe 13; and a sixth valve 8 and a seventh valve 18 are respectively arranged between the first flow transmitter 10 and the first gas transmission port 603 and between the second flow transmitter 9 and the first gas transmission port 603, so that the switching of a gas output pipeline and the flow transmitter is facilitated.
As shown in fig. 7 and 8, in the cyclone desander 4 of the present invention, there is another embodiment, an overflow port 403 is fixed at the upper end of the cyclone desander 4 through a round steel pin 415, a sand discharge port 407 is arranged at the lower end of the cyclone desander 4, and a first water inlet 401 is arranged in the tangential direction of the cyclone desander 4; the cyclone desander 4 is arranged in the outer shell 417, and the cyclone desander 4 is fixed in the outer shell 417 through the pressing piece 416; in addition, passages communicated with the first water inlet 401 and the overflow port 403 are respectively arranged in the outer shell 417 and the pressing piece 416, and the two passages and the sand discharge port 407 are communicated with an external pipeline through non-standard flanges.
Claims (10)
1. An efficient desanding, separating and metering integrated sledge adaptive to variable working conditions is characterized by comprising a gas-liquid separator (6), a plurality of cyclone desanders (4), a lower cylinder body (19) and an input pipe (1) for inputting a solid-liquid-gas three-phase mixture;
the cyclone desander (4) is provided with a first water inlet (401) for communicating with the input pipe (1), an overflow port (403) for communicating with the gas-liquid separator (6) and a sand discharge port (407) for communicating with one end of the lower barrel (19), and the sand discharge port (407) is provided with a cleaning device;
the gas-liquid separator (6) is provided with a first gas transmission port (603), a second water inlet (601) used for communicating the input pipe (1) with the overflow port (403), and a liquid discharge port (606) used for communicating the other end of the lower barrel (19), the first gas transmission port (603) is respectively communicated with a first flow transmitter (10) and a second flow transmitter (9), the first flow transmitter (10) and the second flow transmitter (9) are both communicated with an output pipe (13), and the measuring ranges of the first flow transmitter (10) and the second flow transmitter (9) are different;
a first valve (2), a second valve (5), a third valve (3) and a fourth valve (24) are respectively arranged between the input pipe (1) and the first water inlet (401), between the input pipe (1) and the second water inlet (601), between the overflow port (403) and the second water inlet (601), and between the sand discharge port (407) and the lower barrel (19);
the gas-liquid separator (6) and the lower cylinder body (19) are respectively provided with a first backwashing water pipe (20) and a second backwashing water pipe (21).
2. The variable-working-condition-adaptive efficient desanding, separating and metering integrated skid as claimed in claim 1, wherein a plurality of convex hemispheres (402) are uniformly arranged on the inner wall of the cyclone desander (4), a filter screen (405) is slidably arranged at the lower end of the overflow port (403), and a floater (408) is arranged on the filter screen (405).
3. The efficient sand removal, separation and metering integrated sledge adaptive to variable working conditions according to claim 1, wherein the cleaning device comprises a plurality of linear driving mechanisms (406) uniformly arranged along the circumferential direction of a sand discharge port (407), the output ends of the linear driving mechanisms (406) are fixedly connected with sliding blocks (410), the moving direction of the sliding blocks (410) is the same as the height direction of the sand discharge port (407), and the sliding blocks (410) are uniformly provided with a plurality of groups of push-pull assemblies along the moving direction;
the push-and-pull assembly comprises two groups of idler wheels (409) hinged to a sliding block (410), a scraping rod (411) is arranged between the two groups of idler wheels (409), the middle part of the scraping rod (411) is hinged to a sand discharge port (407), and one end, far away from the idler wheels (409), of the scraping rod (411) extends into the sand discharge port (407).
4. The efficient sand removal, separation and metering integrated sledge adaptive to variable working conditions according to claim 3, wherein the middle of the scraping rod (411) is a circular block (413), a first rotating groove matched with the circular block (413) is formed in the sand discharge port (407), second rotating grooves (412) used for providing a rotating space are formed in two ends of the first rotating groove, travel switches (414) are arranged on two side walls of each second rotating groove (412), and the travel switches (414) and the linear driving mechanism (406) are electrically connected with a first controller.
5. The efficient sand removal, separation and metering integrated skid adapting to the variable working conditions as recited in claim 1, wherein a third water inlet (404) is arranged in the tangential direction of the cyclone sand remover (4), and the third water inlet (404) is arranged above the first water inlet (401).
6. The variable-working-condition-adaptive efficient sand-removing, separating and metering integrated sledge according to claim 1, wherein a plurality of packing plates (602) are vertically arranged in the middle of an inner cavity of the gas-liquid separator (6), and a plurality of through holes (607) facing the packing plates (602) are arranged at one end of the second water inlet (601); a mist catcher (7) is arranged on the first gas transmission port (603).
7. The efficient sand-removing, separating and metering integrated sledge adaptive to variable working conditions according to claim 6, wherein the inclination angles of the through holes (607) are sequentially increased from bottom to top.
8. The variable-working-condition-adaptive efficient sand-removing, separating and metering integrated sledge according to claim 1, wherein a liquid level transmitter (17) is arranged at one end of the gas-liquid separator (6), a second gas transmission port (604) is arranged at one end, far away from the second water inlet (601), of the gas-liquid separator (6), the second gas transmission port (604) is communicated with a third flow transmitter (15) through a first electromagnetic valve (16), the third flow transmitter (15) is communicated with an output pipe (13), and the first electromagnetic valve (16) and the liquid level transmitter (17) are both electrically connected with a second controller; a second electromagnetic valve (14) is arranged between the third flow transmitter (15) and the output pipe (13), and a fifth valve is arranged between the third flow transmitter (15) and the second gas transmission port (604); the outlets of the first backwashing water pipes (20) are respectively arranged at two ends of the gas-liquid separator (6), and one end of the gas-liquid separator (6) close to the second gas transmission port (604) is provided with a weir plate (605).
9. The efficient sand-removing, separating and metering integrated skid adapting to the variable working conditions as recited in claim 1, wherein the lower cylinder (19) is provided with a first inner cavity (25) for communicating with a sand discharge port (407) and a second inner cavity (22) for communicating with a liquid discharge port (606), and a separation valve (23) is arranged between the first inner cavity (25) and the second inner cavity (22); a cleaning port (26) is arranged at one end of the first inner cavity (25) far away from the separation valve (23), and an outlet of the second backwashing water pipe (21) is arranged at one end of the second inner cavity (22) far away from the separation valve (23).
10. The variable-working-condition-adaptive efficient sand-removing, separating and metering integrated sledge according to claim 1, wherein a third electromagnetic valve (11) and a fourth electromagnetic valve (12) are respectively arranged between the first flow transmitter (10) and the output pipe (13) and between the second flow transmitter (9) and the output pipe (13); and a sixth valve (8) and a seventh valve (18) are respectively arranged between the first flow transmitter (10) and the first gas transmission port (603) and between the second flow transmitter (9) and the first gas transmission port (603).
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| CN202210472809.9A CN114737945B (en) | 2022-04-29 | 2022-04-29 | High-efficient degritting separation measurement integration sledge of adaptation variable operating mode |
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| CN202210472809.9A CN114737945B (en) | 2022-04-29 | 2022-04-29 | High-efficient degritting separation measurement integration sledge of adaptation variable operating mode |
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| CN116658147A (en) * | 2023-07-28 | 2023-08-29 | 四川凌耘建科技有限公司 | Built-in inclined plate sand removal and separation integrated device and sand removal and separation method |
| CN116988775A (en) * | 2023-09-26 | 2023-11-03 | 中海油能源发展股份有限公司采油服务分公司 | Solid, liquid and gas three-phase metering skid-mounted device and metering method for well site of gas well |
| CN117643744A (en) * | 2024-01-30 | 2024-03-05 | 四川凌耘建科技有限公司 | Efficient dehydration method and related device for natural gas triethylene glycol |
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