CN212508220U - Novel environmental protection is filtered and is subsided circulation well-flushing device - Google Patents
Novel environmental protection is filtered and is subsided circulation well-flushing device Download PDFInfo
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- CN212508220U CN212508220U CN202021358852.5U CN202021358852U CN212508220U CN 212508220 U CN212508220 U CN 212508220U CN 202021358852 U CN202021358852 U CN 202021358852U CN 212508220 U CN212508220 U CN 212508220U
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Abstract
The utility model discloses a novel environment-friendly filtering, settling and circulating well washing device, which comprises a well washing pool, an auger conveyor and a plunger pump; a primary filter cavity, a secondary filter cavity, a tertiary filter cavity and a quaternary filter cavity which are sequentially connected in series through overflow are arranged in the well washing tank, a water inlet is formed in the primary filter cavity, a U-shaped flow passage is formed in the quaternary filter cavity, a water outlet is formed in one end of the U-shaped flow passage, and the water outlet is communicated with an inlet of the plunger pump through a pipeline; the packing auger conveyor is positioned below the primary filter cavity and is fixedly arranged on the well washing tank, and the inlet of the packing auger conveyor is communicated with the bottom of the primary filter cavity. The utility model discloses can form the runner of continuous cycle well-flushing with the well to can carry out multistage sedimentation to sewage at circulating water well-flushing in-process and filter, in addition the utility model discloses only use as the supply water supply between well-flushing in-process water distribution, consequently the water consumption is very little, thereby has reduced the cost of well-flushing operation.
Description
Technical Field
The utility model relates to a technical field is equipped to the oil, concretely relates to novel environmental protection is filtered and is subsided circulation well-flushing device.
Background
At present, an oil field is in the later stage of development with extremely high water content, low-cost and high-efficiency water injection is still the basis of water flooding development, well washing of a water injection well is taken as a daily production management measure and plays an important role in maintenance and management of the water injection well, the development effect of the water flooding oil field is directly influenced by the quality of the water injection effect, and the quality of the well washing is the key for ensuring the water injection of the water injection well.
The traditional well washing technology presses water from a water distribution station as power into a well for well washing, sewage overflowing from a well mouth is continuously conveyed to a water unloading point by 3 tank cars, the average water consumption for well washing is about 80 square, more sewage is produced by well washing, and all water sources used by the whole well washing all depend on the water from the water distribution station, so that other water facilities communicated with a main pipe network of the water distribution station are influenced to a certain extent.
The sewage after well washing is continuously transported and unloaded to and from the well washing area and the water discharging point by the tank cars, because the quantity of the tank cars is limited, the distance from the tank cars to the water discharging point is long, the round trip time is long, and continuous well washing cannot be ensured, suspended impurities in a shaft can subside again, the well washing is not thorough, in addition, the trunk line pressure of a water distribution station is about 13.0MPa, and the well cannot be washed through when sand is produced or polymer is produced and the well is seriously blocked.
Disclosure of Invention
The utility model aims at providing a defect to prior art exists provides a novel environmental protection is filtered and is subsided circulation well-flushing device, and its is rational in infrastructure, can form the runner of continuous circulation well-flushing in the well to can carry out multistage subside filtration to sewage at circulating water well-flushing in-process, in addition the utility model discloses only use as the supply water supply between well-flushing in-process water distribution room, consequently the water consumption is very little to the cost of well-flushing operation has been reduced.
The technical scheme of the utility model is that:
novel environmental protection is filtered and is subsided circulation well-flushing device, its characterized in that: comprises a well washing pool, an auger conveyor and a plunger pump;
a first-stage filter cavity is arranged on one side in the well washing tank, a water inlet is formed in the first-stage filter cavity, the other side in the well washing tank is divided into an upper layer and a lower layer, a second-stage filter cavity and a third-stage filter cavity are arranged on the upper layer, a fourth-stage filter cavity is arranged on the lower layer, a longitudinal partition plate is arranged in the fourth-stage filter cavity, and a water passing hole enabling a U-shaped flow channel to be formed in the fourth-stage filter cavity is formed in one end of;
a first group of communicated overflow holes are formed between the primary filter cavity and the secondary filter cavity, a second group of communicated overflow holes are formed between the secondary filter cavity and the tertiary filter cavity, an overflow pipe for guiding flow to one end of the U-shaped flow channel is arranged on the tertiary filter cavity, a water outlet is formed in the other end of the U-shaped flow channel, and the water outlet is communicated with an inlet of the plunger pump through a pipeline;
the packing auger conveyor is positioned below the primary filter cavity and fixedly arranged on the well washing pool, and an inlet of the packing auger conveyor is communicated with the bottom of the primary filter cavity.
Preferably, the bottom of the primary filter cavity is provided with a conical surface, and an inlet of the auger conveyor is communicated with the bottom of the conical surface.
Preferably, the water passing hole is positioned at the top of one end of the partition plate.
Preferably, a liquid level meter for detecting the liquid level in the four-stage filtering cavity is fixedly installed on the outer side of the well washing pool.
Preferably, the water inlet and the water outlet are respectively provided with a flowmeter.
Preferably, sand removing openings are respectively formed in the two sides of the four-stage filter cavity on the well washing tank, and a blind plate can be detachably connected to each sand removing opening.
Preferably, a first speed-increasing overflow hole used for communicating the primary filter cavity and the secondary filter cavity is arranged below the first group of overflow holes, and an electromagnetic valve is arranged on the first speed-increasing overflow hole.
Preferably, a second speed-increasing overflow hole used for communicating the secondary filter cavity with the tertiary filter cavity is arranged below the second group of overflow holes, and an electromagnetic valve is arranged on the second speed-increasing overflow hole.
Compared with the prior art, the utility model, have following advantage:
(1) the utility model discloses a water yield in the well-flushing pond circulates the washing to the stratum, until reaching the well-flushing effect, only with a small amount of supply circulating water between the water distribution in the well-flushing to the realization is responsible for the mesh net to influence low, the purpose that the use water yield is few to the water distribution.
(2) The utility model discloses a plunger pump can provide the pressure more than 35.0MPa, can effectively break away the jam in the tubular column through this pressure to carry the plug to carry out the filtering in the well-flushing pond, after the well-flushing is ended in addition, can also pour into the stratum into again through the water after the plunger pump will filter.
(3) By observing the parameter change of the inlet and outlet flowmeters, the conditions of leakage of a pipe column in the well, leakage or overflow of a stratum and the like can be judged, and the conditions of stratum leakage or overflow are controlled by adjusting and controlling the water quantity of the inlet and outlet, so that the capability of circulating water carrying stratum impurities is achieved.
(4) The whole well washing construction is uninterrupted, the well washing effect is good, mechanical sand removal is realized through the auger conveyor, and the problem of manual cleaning is solved.
Drawings
FIG. 1 is a schematic structural diagram (I) of a well-flushing tank;
FIG. 2 is a schematic structural diagram (II) of the well-flushing tank;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
in the figure: 1. the device comprises a primary filter cavity, a secondary filter cavity, a tertiary filter cavity, a quaternary filter cavity, a blind plate, a solenoid valve, a packing auger conveyor 7, a packing auger conveyor 8, a water inlet 9, a water outlet 10, a conical surface 11, a first group of overflow holes, a second group of overflow holes 12, a second group of overflow holes 13, overflow pipes 14, a first speed-increasing overflow hole, a second speed-increasing overflow hole 15, a liquid level meter 16, a liquid level meter 17, a water passing port 18 and a partition plate.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1
Referring to fig. 1 to 3, the novel environment-friendly filtering, settling and circulating well washing device comprises a well washing pool, an auger conveyor 7 and a plunger pump.
One side in the well-flushing pond is equipped with one-level filtering chamber 1, is equipped with water inlet 8 on one-level filtering chamber 1, and the opposite side in the well-flushing pond is two-layer from top to bottom, and the upper strata is equipped with second grade filtering chamber 2 and tertiary filter chamber 3, and the lower floor is level four filter chamber 4.
A longitudinal partition plate 18 is arranged in the quaternary filtration cavity 4, one end of the partition plate 18 is provided with a water passing hole 17 which enables a U-shaped flow passage to be formed in the quaternary filtration cavity 4, wherein the water passing hole 17 can be positioned at the top of the partition plate 18, so that the effect of interval overflow can be achieved.
A first group of overflow holes 11 which are communicated are arranged between the primary filter cavity 1 and the secondary filter cavity 2;
a second group of overflow holes 12 communicated with each other are arranged between the secondary filtering cavity 2 and the tertiary filtering cavity 3; an overflow pipe 13 which guides the flow to one end of the U-shaped flow channel is arranged on the third-stage filter cavity 3;
the other end of the U-shaped flow passage is provided with a water outlet 9, and the water outlet 9 is communicated with an inlet of the plunger pump through a pipeline.
The packing auger conveyor 7 is positioned below the primary filter cavity 1 and is fixedly arranged on the well washing pool, and the inlet of the packing auger conveyor 7 is communicated with the bottom of the primary filter cavity 1.
Wherein the bottom of one-level filter chamber 1 can be designed into conical surface 10 to the import of auger conveyer 7 and the bottom intercommunication of conical surface 10 are convenient for impurity such as grit through conical bottom and fall into auger conveyer 7 more.
The working process is as follows:
the water inlet 8 of the device is butted with the outlet of a high-pressure water injection well through a high-pressure pipeline and a joint;
a valve of the water injection well is opened, sewage in the water injection well is flushed out by the pressure of the water well, a water inlet line is flushed at the same time, and then the sewage flows into the primary filter chamber 1 through the water inlet 8 to be subjected to sedimentation filtration;
when the sewage liquid level rose to first group overflow hole 11 department after filtering, sewage flowed into in the second grade filter chamber 2 and subsides the filtration, then filters sewage through tertiary filter chamber 3, level four filter chamber 4 in proper order.
When the sewage level in the four-stage filter chamber 4 reaches a designated position, the water outlet 9 of the device is opened, and the sewage is connected with a high-pressure pipeline through a vehicle-mounted HTB350A type plunger pump and is reinjected into the water injection well.
The reinjected water is delivered to an oil layer through the annular space of the sleeve, the blockage in the near-wellbore area is carried into the well washing pool, and after three-stage sedimentation and filtration, the filtrate is subjected to circulating well washing again through the plunger pump until the outlet well washing liquid is clean, and in the circulating well washing process, water in a water distribution room can be used for appropriate replenishment.
After the well washing is finished, the starting pressure of water injection of the oil layer can be reduced through trial extrusion (the pumping pressure and the discharge capacity of the vehicle-mounted plunger pump are improved, and the well washing liquid in the circulating well washing device is injected into a water well), so that the water injection capacity is further recovered.
After the whole well washing and trial extrusion process is completed, 90% of solid impurities such as silt and the like are filtered and settled to the bottom of the primary filter cavity 1, at the moment, the outlet of the auger conveyor 7 can be opened, and filter residues are discharged and treated through the auger conveyor 7.
The utility model discloses a water yield in the well-flushing pond circulates the washing to the stratum, until reaching the well-flushing effect, only with a small amount of supply circulating water between the water distribution in the well-flushing to the realization is responsible for the mesh net to influence low, the purpose that the use water yield is few to the water distribution.
The utility model discloses a plunger pump can provide the pressure more than 35.0MPa, can effectively break away the jam in the tubular column through this pressure to carry the plug and carry out the filtering in to well-flushing pond, only rely on the problem that the jam in the tubular column can't be broken away to the well-flushing of water distribution room 13MPa pressure before the solution, after well-flushing ends in addition, can also pour into the stratum into again through the water after the plunger pump will filter.
Example 2
The embodiment is optimized on the basis of embodiment 1, and specifically comprises the following steps:
and a liquid level meter 16 for detecting the liquid level in the four-stage filter chamber 4 is fixedly arranged on the outer side of the first well washing tank.
And (II) sand cleaning ports are respectively arranged on two sides of the four-stage filter cavity 4 on the well washing tank, a blind plate 5 can be detachably connected to each sand cleaning port, and the blind plates 5 can be periodically opened to clean the four-stage filter cavity 4 through the sand cleaning ports.
Thirdly, flowmeters are respectively arranged on the water inlet 8 and the water outlet 9, and the leakage condition of the oil layer of the inner pipe column of the water well and the well washing effect are judged by calculating the flow difference value of the water inlet 8 and the water outlet 9, so that the well washing efficiency and the well washing effect are greatly improved;
the device carries out 17 well-flushing tests in four oil recovery management areas, and specifically comprises the following steps:
1. the 8 water injection wells are integrated, the average injection allocation after well washing is increased by 20 cubic meters compared with the average injection allocation before well washing, the average injection is increased by 31.1 cubic meters, the water injection pressure is reduced by 0.6MPa, and the apparent water absorption index is increased by 3.3m 3/(d.MPa);
2. the injection well has 9 ports, the average injection allocation after well flushing is increased by 15.6m3 compared with the average injection allocation before well flushing, the average actual injection is increased by 19.6m3, the water injection pressure is reduced by 0.2MPa, and the apparent water absorption index is increased by 2.1m 3/(d.MPa);
from the construction effect, the apparent water absorption index of the water injection well is obviously improved after the device is applied to well flushing, the effect is better, the daily maintenance requirement of the water injection well in the lone east oil field can be met, and the popularization and the application can be good.
The utility model discloses an it changes to observe exit flowmeter parameter, can judge whether there is the leakage in the well tubular column, whether there is the circumstances such as leakage or overflow in the stratum, imports and exports the water yield through the regulation control, reaches the control stratum leakage or the overflow circumstances to reach the ability that the circulating water carried stratum impurity.
Example 3
The embodiment is further optimized on the basis of embodiment 1 or embodiment 2, and specifically includes:
a first speed-increasing overflow hole 14 for communicating the primary filter cavity 1 and the secondary filter cavity 2 is arranged below the first group of overflow holes 11, and an electromagnetic valve 6 is arranged on the first speed-increasing overflow hole 14;
a second speed-increasing overflow hole 15 used for communicating the secondary filter cavity 2 and the tertiary filter cavity 3 is arranged below the second group of overflow holes 12, and an electromagnetic valve 6 is arranged on the second speed-increasing overflow hole 15.
When the operating mode sewage contains solid impurity such as grit in the well less, just can carry out the filtering with it through one-level filter chamber 1, can open solenoid valve 6 on first acceleration rate overflow, the second acceleration rate overflow hole 15 according to operating condition and accelerate the overflow, thereby make the utility model discloses it is more nimble under the operating mode to the efficiency of well-flushing has been improved.
The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge range of those skilled in the art without departing from the spirit of the present invention, and the changed contents still belong to the protection scope of the present invention.
Claims (8)
1. Novel environmental protection is filtered and is subsided circulation well-flushing device, its characterized in that: comprises a well washing pool, an auger conveyor and a plunger pump;
a first-stage filter cavity is arranged on one side in the well washing tank, a water inlet is formed in the first-stage filter cavity, the other side in the well washing tank is divided into an upper layer and a lower layer, a second-stage filter cavity and a third-stage filter cavity are arranged on the upper layer, a fourth-stage filter cavity is arranged on the lower layer, a longitudinal partition plate is arranged in the fourth-stage filter cavity, and a water passing hole enabling a U-shaped flow channel to be formed in the fourth-stage filter cavity is formed in one end of;
a first group of communicated overflow holes are formed between the primary filter cavity and the secondary filter cavity, a second group of communicated overflow holes are formed between the secondary filter cavity and the tertiary filter cavity, an overflow pipe for guiding flow to one end of the U-shaped flow channel is arranged on the tertiary filter cavity, a water outlet is formed in the other end of the U-shaped flow channel, and the water outlet is communicated with an inlet of the plunger pump through a pipeline;
the packing auger conveyor is positioned below the primary filter cavity and fixedly arranged on the well washing pool, and an inlet of the packing auger conveyor is communicated with the bottom of the primary filter cavity.
2. The novel environment-friendly filtering and settling circulating well washing device as claimed in claim 1, wherein: the bottom of the primary filter cavity is provided with a conical surface, and an inlet of the auger conveyor is communicated with the bottom of the conical surface.
3. The novel environment-friendly filtering and settling circulating well washing device as claimed in claim 1, wherein: the water passing port is positioned at the top of one end of the partition plate.
4. The novel environment-friendly filtering and settling circulating well washing device as claimed in claim 1, wherein: and a liquid level meter for detecting the liquid level in the four-stage filter cavity is fixedly arranged on the outer side of the well washing pool.
5. The novel environment-friendly filtering and settling circulating well washing device as claimed in claim 1, wherein: and flowmeters are respectively arranged on the water inlet and the water outlet.
6. The novel environment-friendly filtering and settling circulating well washing device as claimed in claim 1, wherein: and sand cleaning ports are respectively arranged on two sides of the four-stage filter cavity on the well washing tank, and a blind plate can be detachably connected to each sand cleaning port.
7. The novel environment-friendly filtering and settling circulating well washing device as claimed in claim 1, wherein: and a first speed-increasing overflow hole for communicating the primary filter cavity and the secondary filter cavity is arranged below the first group of overflow holes, and an electromagnetic valve is arranged on the first speed-increasing overflow hole.
8. The novel environment-friendly filtering and settling circulating well washing device as claimed in claim 7, wherein: and a second speed-increasing overflow hole for communicating the secondary filter cavity and the tertiary filter cavity is arranged below the second group of overflow holes, and an electromagnetic valve is arranged on the second speed-increasing overflow hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021358852.5U CN212508220U (en) | 2020-07-13 | 2020-07-13 | Novel environmental protection is filtered and is subsided circulation well-flushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021358852.5U CN212508220U (en) | 2020-07-13 | 2020-07-13 | Novel environmental protection is filtered and is subsided circulation well-flushing device |
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| Publication Number | Publication Date |
|---|---|
| CN212508220U true CN212508220U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021358852.5U Active CN212508220U (en) | 2020-07-13 | 2020-07-13 | Novel environmental protection is filtered and is subsided circulation well-flushing device |
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| CN (1) | CN212508220U (en) |
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- 2020-07-13 CN CN202021358852.5U patent/CN212508220U/en active Active
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