CN209354104U - Sand prevention production string - Google Patents
Sand prevention production string Download PDFInfo
- Publication number
- CN209354104U CN209354104U CN201821427299.9U CN201821427299U CN209354104U CN 209354104 U CN209354104 U CN 209354104U CN 201821427299 U CN201821427299 U CN 201821427299U CN 209354104 U CN209354104 U CN 209354104U
- Authority
- CN
- China
- Prior art keywords
- pipe
- oil
- sand control
- sand
- control screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004576 sand Substances 0.000 title claims abstract description 224
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 230000002265 prevention Effects 0.000 title 1
- 239000003129 oil well Substances 0.000 claims abstract description 52
- 238000011010 flushing procedure Methods 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 230000037361 pathway Effects 0.000 claims description 61
- 239000013049 sediment Substances 0.000 claims description 57
- 239000012530 fluid Substances 0.000 claims description 51
- 239000000725 suspension Substances 0.000 claims description 14
- 238000005086 pumping Methods 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 126
- 239000012535 impurity Substances 0.000 description 9
- 239000002689 soil Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a sand control production tubular column belongs to the oil development field. This sand control production string includes: the device comprises a casing, a first oil pipe, a second oil pipe, an oil well pump, a packer, a sand control screen pipe, a sand setting pipe, a flushing pipe and a valve body. The lower end of the first oil pipe is connected with the upper end of the oil well pump, the lower end of the oil well pump is connected with the upper end of the second oil pipe, and the lower end of the second oil pipe is connected with the upper end of the flushing pipe; and a first liquid inlet hole is formed in the pipe wall of the second oil pipe, the flushing pipe is positioned inside the sand control screen pipe, and the sand control screen pipe is positioned inside the sand setting pipe. The pipe wall of the upper end of the sand setting pipe is provided with a second liquid inlet hole, the packer is positioned in the oil sleeve annulus, and the valve body is suspended and seated in the sleeve. The sand control production pipe column realizes the blockage removal of the sand control screen pipe, the oil well pump and the oil pipe under the condition that the sand control production pipe column is not lifted when the sand control screen pipe, the oil well pump and the oil pipe are blocked, has simple construction process, low blockage removal operation cost, small production influence and small construction risk.
Description
Technical field
The utility model relates to field of petroleum exploitation.In particular to a kind of sand control flow string.
Background technique
Pumping production is oil well main oil production method at present, and when pumping production can take stratum output object out of, and ground
There are the impurity such as soil, sand grains in layer output object.If not taking the sand control of the impurity in effective removal stratum output object
Measure be easy to cause the stratum sand that collapses to bury, and the accidents such as oil well pump blocking, holddown, abrasion influence the normal production of oil well, can lead
The oil well underproduction is caused even to stop production.Therefore, it is necessary to implement sand control measure by sand control flow string.
Current sand control flow string includes casing, oil pipe, oil well pump, packer, sand control screen and sand sediment pipe, wherein oil
Pipe, oil well pump, packer, sand control screen and sand sediment pipe are respectively positioned in casing, the upper end of the lower end connection oil well pump of oil pipe, oil pumping
The lower end of pump connects sand control screen, and packer is used to seal the space between oil pipe and casing, also known as oil jacket annulus.Sand sediment pipe position
In the outside of sand control screen, and sand sediment pipe is equipped with inlet opening.When pumping production, the production fluid in stratum is flowed up, and is led to
The inlet opening crossed on sand sediment pipe enters in sand control screen, and enters oil well pump by sand control screen, hence into oil pipe, further
Pass through the production fluid for the transport pipeline transport extraction that the valve of oil pipe upper end connects.But when pumping production, in the output object of stratum
Impurity also can up be flowed with production fluid, the sand grains of bulky grain enters sand sediment pipe in impurity, to realize sand control measure.
Due to only having the bulky grain sand grains of impurity just to can enter sand sediment pipe, and short grained soil and fine silt etc. are with output
Liquid enters in sand control screen, slowly blocks sand control screen.And short grained soil and fine silt etc. are as production fluid is to upstream
It, can further plugging oil pump and oil pipe in dynamic process.Therefore, the sand control screen in above-mentioned sand control flow string, oil well pump
When with oil pipe blocking, sand control flow string out is needed, de-plugging operation is carried out.The de-plugging operating cost is high, and long construction period is led
Cause oil well production low efficiency.
Utility model content
The utility model provides a kind of sand control flow string, when can solve sand control screen, oil well pump and oil pipe blocking,
In the case where not playing out sand control flow string, can be to sand control screen, oil well pump and oil pipe de-plugging the problem of.Technical solution is such as
Under:
A kind of sand control flow string, the sand control flow string include:
Casing, the first oil pipe, the second oil pipe, oil well pump, packer, sand control screen, sand sediment pipe, flushing pipe and valve body；
First oil pipe, second oil pipe, the oil well pump, the packer, the sand control screen, the sand setting
Pipe, the flushing pipe and the valve body are respectively positioned in described sleeve pipe；
The lower end of first oil pipe connects the upper end of the oil well pump, the lower end connection of the oil well pump second oil
The lower end of the upper end of pipe, second oil pipe connects the upper end of the flushing pipe；
The tube wall of second oil pipe is equipped with the first inlet opening, and first inlet opening is used for will be from described sleeve pipe and institute
The blockages relieving fluid injected in the oil jacket annulus of the second oil pipe is stated to be flowed into the flushing pipe；
The flushing pipe is located at the inside of the sand control screen, and the sand control screen is located at the inside of the sand sediment pipe, institute
The upper end for stating sand sediment pipe is connected with the tube wall of the sand control screen；
The tube wall of the upper end of the sand sediment pipe is equipped with the second inlet opening, and second inlet opening is used for the production in stratum
Liquid is flowed into the sand control screen out；
The packer is located in the oil jacket annulus, for sealing the oil jacket annulus；The valve body hanging setting exists
In described sleeve pipe, and it is located at the lower section of the sand sediment pipe.
In one possible implementation, the inner wall of the side outer wall connection described sleeve pipe of the packer, the other side
Outer wall connects the outer wall of the upper end of the sand sediment pipe, and the packer is located at the top of second inlet opening.
In one possible implementation, the first feed pathway, first inlet opening are equipped in second oil pipe
It is set to the junction of the tube wall of first feed pathway and second oil pipe；
One end of first feed pathway connects first inlet opening, the other end connection of first feed pathway
The flushing pipe.
In one possible implementation, the quantity of first inlet opening can be one or more；
It is logical that at least one first feed liquor is set when the quantity of first inlet opening is multiple, in second oil pipe
Road；
At least one first inlet opening, institute is arranged in the junction of the tube wall of one the first feed pathway and second oil pipe
The one end for stating first feed pathway connects at least one described first inlet opening, one first feed pathway it is another
End connects the flushing pipe.
In one possible implementation, the second feed liquor for exporting the production fluid is equipped in second oil pipe
Channel, one end of second feed pathway connect the oil well pump, and the other end connection of second feed pathway is described anti-
Sand sieve pipe.
In one possible implementation, second feed pathway is that first feed liquor is removed in second oil pipe
Oil pipe channel other than channel.
In one possible implementation, the internal diameter of the sand sediment pipe is greater than the outer diameter of the sand control screen, and described
The length of sand sediment pipe is greater than the length of the sand control screen.
In one possible implementation, the sand control screen is cutting seam sieve tube, and sand block partial size is 0.3~0.8mm.
In one possible implementation, the upper end of the oil jacket annulus is equipped with liquid feed valve, and the liquid feed valve is for infusing
Enter the blockages relieving fluid；
The upper end of first oil pipe is equipped with liquid valve, and the liquid valve takes tamper out of for the blockages relieving fluid.
In one possible implementation, the valve body is suspension ball-and-seat；
The suspension ball-and-seat when being used for pumping production, opens the valve of the suspension ball-and-seat；To the sand screen
When pipe, the oil well pump and the oil pipe carry out de-plugging, the valve of the suspension ball-and-seat is closed.
Technical solution provided by the embodiment of the utility model has the benefit that
Sand control flow string provided by the embodiment of the utility model is closed when sand control screen, oil well pump and oil pipe blocking
Valve body injects a large amount of blockages relieving fluids from oil jacket annulus, which enters flushing pipe by the first inlet opening, from the lower end of flushing pipe
After flowing into sand control screen, a part of blockages relieving fluid is flowed out from sand control screen lower end, and another part blockages relieving fluid is upward by sand control screen
Flowing.At this point, the tamper of sand control screen outer wall attachment washing away under dissolution in a part of blockages relieving fluid, it is de- to there is dispersion
It falls, which falls into sand sediment pipe, to realize the de-plugging to sand control screen.The small particle of sand control screen inner wall attachment is with another
A part of blockages relieving fluid flows up, and during flowing up, flows through oil well pump and oil pipe, blockages relieving fluid will also be attached to oil pumping
Tamper on pump and oil pipe is taken out of to ground, to realize the de-plugging to oil well pump and oil pipe.The sand control flow string is realized
When sand control screen, oil well pump and oil pipe are blocked, in the case where not playing out sand control flow string, to sand control screen, take out
Oil pump and oil pipe carry out de-plugging, and construction technology is simple, and de-plugging operating cost is low, little impact on production, and construction risk is small.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of sand control flow string provided by the embodiment of the utility model；
Fig. 2 is the schematic diagram that blockages relieving fluid flows in another sand control flow string provided by the embodiment of the utility model；
Fig. 3 is the sectional view that flushing pipe provided by the embodiment of the utility model is connected to the second oil pipe；
The schematic diagram that Fig. 4 is production fluid to be flowed in a kind of sand control flow string provided by the embodiment of the utility model.
Appended drawing reference respectively indicates:
1- casing, the first oil pipe of 2-, the second oil pipe of 3-, 4- oil well pump, 5- packer, 6- sand control screen,
7- sand sediment pipe, 8- flushing pipe, 9- valve body, the first inlet opening of 10-, the second inlet opening of 11-,
The first feed pathway of 12-, the second feed pathway of 13-, 14- liquid feed valve, 15- liquid valve, 16- oil reservoir.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
The utility model embodiment provides a kind of sand control flow string, as shown in Figure 1, the sand control flow string includes:
Casing, the first oil pipe, the second oil pipe, oil well pump, packer, sand control screen, sand sediment pipe, flushing pipe and valve body.
First oil pipe, the second oil pipe, oil well pump, packer, sand control screen, sand sediment pipe, flushing pipe and valve body are respectively positioned on set
In pipe.
The upper end of the lower end connection oil well pump of first oil pipe, the lower end of oil well pump connect the upper end of the second oil pipe, the second oil
The upper end of the lower end connection flushing pipe of pipe.
The tube wall of second oil pipe is equipped with the first inlet opening, and the first inlet opening is used for will be from the oil jacket of casing and the second oil pipe
The blockages relieving fluid injected in annular space is flowed into flushing pipe.
Flushing pipe is located at the inside of sand control screen, and sand control screen is located at the inside of sand sediment pipe, the upper end of sand sediment pipe and sand control
The tube wall of screen casing connects.
The tube wall of the upper end of sand sediment pipe is equipped with the second inlet opening, and the second inlet opening is used to flow into the production fluid in stratum
Into sand control screen.
Packer is located in oil jacket annulus, for sealing oil jacket annulus；Valve body hanging setting is located at sand setting in casing
The lower section of pipe.The valve body is used for when carrying out de-plugging, by casing and zonal isolation.
In one possible implementation, the first oil pipe and the second oil pipe can be same or different.It is practical new at this
In type embodiment, this is not especially limited.When the first oil pipe and identical the second oil pipe, oil well pump be located at the first oil pipe and/
Or second in oil pipe.
In one possible implementation, flushing pipe is used to blockages relieving fluid flowing into sand control screen, and the lower end of flushing pipe
It does not close, after blockages relieving fluid flows into flushing pipe, flows into sand control screen from the lower end of flushing pipe, de-plugging is carried out to sand control screen.
Sand control flow string provided by the embodiment of the utility model is closed when sand control screen, oil well pump and oil pipe blocking
Valve body injects a large amount of blockages relieving fluids from oil jacket annulus, which enters flushing pipe by the first inlet opening, from the lower end of flushing pipe
After flowing into sand control screen, a part of blockages relieving fluid is flowed out from sand control screen lower end, and another part blockages relieving fluid is upward by sand control screen
Flowing.At this point, the tamper of sand control screen outer wall attachment washing away under dissolution in a part of blockages relieving fluid, it is de- to there is dispersion
It falls, which falls into sand sediment pipe, to realize the de-plugging to sand control screen.The small particle of sand control screen inner wall attachment is with another
A part of blockages relieving fluid flows up, and during flowing up, flows through oil well pump and oil pipe, blockages relieving fluid will also be attached to oil pumping
Tamper on pump and oil pipe is taken out of to ground, to realize the de-plugging to oil well pump and oil pipe.The sand control flow string is realized
When sand control screen, oil well pump and oil pipe are blocked, in the case where not playing out sand control flow string, to sand control screen, take out
Oil pump and oil pipe carry out de-plugging, and construction technology is simple, and de-plugging operating cost is low, little impact on production, and construction risk is small.
In one possible implementation, as shown in Fig. 2, being equipped with the first feed pathway, the first feed liquor in the second oil pipe
Hole is set to the junction of the tube wall of the first feed pathway and the second oil pipe.One end of first feed pathway connects the first feed liquor
The other end in hole, the first feed pathway connects flushing pipe.
First quantity of the first inlet opening can be one or more；When the first quantity of the first inlet opening is multiple
When, at least one first feed pathway is set in the second oil pipe；The connection of the tube wall of one the first feed pathway and the second oil pipe
At least one first inlet opening is arranged in place, and one end of first feed pathway connects at least one first inlet opening, and one the
The other end of one feed pathway connects flushing pipe.
In one possible implementation, when the first quantity of the first inlet opening is multiple, the of the first inlet opening
One quantity, which can according to need, to be configured and changes.In the utility model embodiment, to the first quantity of the first inlet opening
It is not especially limited.For example, the first quantity of the first inlet opening can be 2,3 or 4.Preferably, the first of the first inlet opening
Quantity is 4.Also, when the first quantity of the first inlet opening is multiple, multiple first inlet openings can be uniformly or uneven
It is set on the tube wall of the second oil pipe.For example, the first quantity of the first inlet opening is 4, and 4 the first inlet openings are uniformly set
It is placed on the tube wall of the second oil pipe.
In one possible implementation, when the first feed pathway is multiple, each first feed pathway and second
One or more first inlet openings can be set in the junction of the tube wall of oil pipe.In the utility model embodiment, to the connection
First quantity of the first inlet opening of place's setting is not especially limited.For example, the first quantity of the first inlet opening is arranged in the junction
It is 1,2 or 3.Preferably, it is 1 which, which is arranged the first quantity of the first inlet opening,.Also, each first feed pathway with
First quantity of the first inlet opening of the junction setting of the tube wall of the second oil pipe can be identical, can not also be identical.For example, one
The junction of the tube wall of a first feed pathway and the second oil pipe is arranged 1 the first inlet opening, another first feed pathway with
2 the first inlet openings are arranged in the junction of the tube wall of second oil pipe.
Multiple first feed pathways can be the independent multiple tube channels being arranged in the second oil pipe, or the second oil
The multiple channels being separated out in pipe.For example, can be arranged in the second oil pipe when the second quantity of the first feed pathway is 2
One baffle, so that the second oil pipe is divided into 2 parts, a part is a feed pathway, and another part is logical for another feed liquor
Road.
In one possible implementation, the second feed pathway for exporting production fluid is equipped in the second oil pipe, the
One end of two feed pathways connects oil well pump, and the other end of the second feed pathway connects sand control screen.
The third quantity of second feed pathway can be one or more.Also, the second feed pathway can be second
The independent tube channel being arranged in oil pipe, or the channel being separated out in the second oil pipe.When the second feed pathway is the second oil
The channel being separated out in pipe, and when the first feed pathway is also the channel being separated out in the second oil pipe, it can be according to the first feed pathway
The second quantity and the second feed pathway third quantity, at least one baffle is set in the second oil pipe, thus by second oil
Pipe is divided into the first feed pathway of the second quantity and third the second feed pathway of quantity.For example, the second of the first feed pathway
Quantity is 4, and the third quantity of the second feed pathway is 4, then 8 baffles are arranged in the second oil pipe, thus by the second oil pipe every
At 4 the first feed pathways and 4 the second feed pathways.Wherein, the size of each first feed pathway can be equal or not
It is equal.In addition, the size of each second feed pathway can also be equal or unequal.Also, the first feed liquor of the second quantity
Second feed pathway of channel and third quantity can be uniformly distributed in the second oil pipe or uneven distribution.For example, with reference to
Fig. 3, can uniformly in the second oil pipe with 4 the first feed pathways and 4 the second feed pathways in Fig. 3 and cross-distribution is
Example is illustrated.
In one possible implementation, when the second feed pathway be the second oil pipe in be separated out channel when, second into
Liquid channel is the oil pipe channel in the second oil pipe in addition to the first feed pathway.
In one possible implementation, packer can individually for hanging setting in oil jacket annulus, packer can also
To connect with sand sediment pipe, and hanging setting is in oil jacket annulus.When packer is connect with sand sediment pipe, and hanging setting is in oil jacket ring
When aerial, the inner wall of the side outer wall connecting sleeve of packer, other side outer wall connects the outer wall of the upper end of sand sediment pipe, and insulates
Device is located at the top of the second inlet opening.
It should be noted is that packer is used to seal oil jacket annulus, and oil pipe is located in casing, and the surrounding of oil pipe is equal
For oil jacket annulus, it is both needed to packer sealing, therefore, the 4th quantity of packer is multiple；For example, the 4th quantity of packer is
2, any position of oil jacket annulus is arranged in a packer, another packer is arranged in oil jacket annulus and any position
Symmetrical position.
In one possible implementation, since sand control screen is in the inside of sand sediment pipe.Therefore, the internal diameter of sand sediment pipe can
To be greater than the outer diameter of sand control screen, and the length of sand sediment pipe can be greater than the length of sand control screen.Also, the outer diameter of sand control screen
Size can according to need and be configured and change, in the utility model embodiment, to the size of the outer diameter of sand control screen
It is not especially limited.For example, the outer diameter of sand control screen is 170mm-190mm.Preferably, the outer diameter of sand control screen be 170mm,
175mm or 177mm.
The internal diameter of sand sediment pipe is greater than the outer diameter of sand control screen, and the size of the internal diameter of sand sediment pipe can according to need and be set
It sets and changes, in the utility model embodiment, the size of the internal diameter of sand sediment pipe is not especially limited.For example, working as sand screen
When the outer diameter of pipe is 160mm-190mm, the internal diameter of sand sediment pipe is any value greater than 190mm.Preferably, the internal diameter of sand sediment pipe is
195mm, 197mm or 200mm.
The length of sand control screen, which can according to need, to be configured and changes, in the utility model embodiment, to sand control
The length of screen casing is not especially limited.For example, the length of sand control screen is 1m-2m.Preferably, the length of sand control screen is
1.2m, 1.4m or 1.6m.
The length of sand sediment pipe is greater than the length of sand control screen, and the length of sand sediment pipe can according to need and be configured and more
Change, in the utility model embodiment, the length of sand sediment pipe is not especially limited.When the length of sand control screen is 1m-2m,
The length of sand sediment pipe is any value greater than 2m.Preferably, the length of sand sediment pipe is 3m, 3.5m or 4m.
In one possible implementation, since production fluid will be exported by sand sediment pipe to sand control screen.Therefore, it sinks
The tube wall of the upper end of sandpipe is equipped with the second inlet opening, which is used to the production fluid in stratum being flowed into sand screen
In pipe.
Second inlet opening can be set on the two sides tube wall of sand sediment pipe upper end, also can be set the one of sand sediment pipe upper end
On side pipe wall.In the utility model embodiment, the position on sand sediment pipe is arranged in the second inlet opening and is not especially limited.It is excellent
Selection of land, the second inlet opening are arranged on the two sides tube wall of sand sediment pipe upper end.
When the second inlet opening is arranged on the two sides tube wall of sand sediment pipe upper end, the second inlet opening on every side pipe wall
Five quantity can be same or different.In the utility model embodiment, to fiveth number of second inlet opening on every side pipe wall
Amount is not especially limited.Preferably, fiveth quantity of second inlet opening on every side pipe wall is identical.
Also, when fiveth quantity of second inlet opening on every side pipe wall is identical, the second inlet opening is on every side pipe wall
The 5th quantity can according to need and be configured and change.In the utility model embodiment, to the second inlet opening in every side
The 5th quantity on tube wall is not especially limited.For example, fiveth quantity of second inlet opening on every side pipe wall can be 10,20
Or 30.Preferably, fiveth quantity of second inlet opening on every side pipe wall is 20.
When pumping production, the second inlet opening on the tube wall of two sides that production fluid in stratum passes through sand sediment pipe upper end into
Enter sand control screen.Referring to fig. 4, when pumping production, the impurity in production fluid and stratum output object flows through suspension ball-and-seat, and leads to
It crosses the second inlet opening to enter in sand control screen, the bulky grain sand grains in impurity is blocked in outside sand control screen, and bulky grain sand grains is fallen
Enter to enter sand sediment pipe, and short grained soil and fine silt in impurity etc. enters sand control screen with production fluid, leads to sand screen
Blockage.Also, short grained soil and fine silt in impurity etc. can also be flowed up with production fluid, logical by the second feed liquor
Road enters in oil well pump and oil pipe, leads to oil well pump and oil pipe blocking.
In one possible implementation, sand control screen is cutting seam sieve tube, and sand block partial size is 0.3~0.8mm.
The type of sand control screen, which can according to need, to be configured and changes, in the utility model embodiment, to sand control
The type of screen casing is not especially limited.For example, sand control screen can be cutting seam sieve tube, punching screen casing, wire-wrapped screen or spiral screen
Pipe etc..Preferably, sand control screen is cutting seam sieve tube.
The size of the sand block partial size of sand control screen, which can according to need, to be configured and changes, in the utility model embodiment
In, the size of the sand block partial size of sand control screen is not especially limited.Preferably, the sand block partial size of sand control screen be 0.3~
0.8mm。
In one possible implementation, the upper end of oil jacket annulus is equipped with liquid feed valve, and liquid feed valve is for injecting blockages relieving fluid；
The upper end of first oil pipe is equipped with liquid valve, and liquid valve takes small particle out of for blockages relieving fluid.
In one possible implementation, the type of blockages relieving fluid, which can according to need, is selected and is changed.In this reality
With in new embodiment, the type of blockages relieving fluid is not especially limited.For example, blockages relieving fluid can be crude oil, clear water, acid solution
At least one of with surfactant solution.
In one possible implementation, valve body can be suspension ball-and-seat.When pumping production, the single stream of suspension is opened
The valve of valve；When carrying out de-plugging to sand control screen, oil well pump and oil pipe, the valve of suspension ball-and-seat is closed, prevents blockages relieving fluid logical
Cross the oil reservoir that suspension ball-and-seat enters in stratum, polluted reservoir.
Sand control flow string provided by the embodiment of the utility model is closed when sand control screen, oil well pump and oil pipe are blocked
The valve for closing suspension ball-and-seat injects a large amount of blockages relieving fluids from liquid feed valve, and the blockages relieving fluid is logical through the first feed liquor by the first inlet opening
Road enters flushing pipe, and after entering sand control screen from the lower end of flushing pipe, a part of blockages relieving fluid is flowed out from sand control screen lower end, another
Part blockages relieving fluid is flowed up by sand control screen.At this point, the tamper of sand control screen outer wall attachment is in a part of blockages relieving fluid
It washes away and under dissolution, occurs dispersing to fall off, which falls into sand sediment pipe, to realize the de-plugging to sand control screen.It is anti-
The small particle of sand sieve inside pipe wall attachment is flowed up with another part blockages relieving fluid, during flowing up, flows through oil pumping
Pump and oil pipe, blockages relieving fluid is also taken the tamper being attached on oil well pump and oil pipe to ground out of by liquid valve, to realize
De-plugging to oil well pump and oil pipe.The sand control flow string is realized when sand control screen, oil well pump and oil pipe are blocked, not
In the case where acting sand control flow string, de-plugging is carried out to sand control screen, oil well pump and oil pipe, construction technology is simple, and de-plugging is made
Industry is at low cost, little impact on production, and construction risk is small.
The above is merely for convenience of it will be understood by those skilled in the art that the technical solution of the utility model, not to
Limit the utility model.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of sand control flow string, which is characterized in that the sand control flow string includes:
Casing (1), the first oil pipe (2), the second oil pipe (3), oil well pump (4), packer (5), sand control screen (6), sand sediment pipe
(7), flushing pipe (8) and valve body (9)；
First oil pipe (2), second oil pipe (3), the oil well pump (4), the packer (5), the sand control screen
(6), the sand sediment pipe (7), the flushing pipe (8) and the valve body (9) are respectively positioned in described sleeve pipe (1)；
The lower end of first oil pipe (2) connects the upper end of the oil well pump (4), described in the lower end connection of the oil well pump (4)
The upper end of second oil pipe (3), the lower end of second oil pipe (3) connect the upper end of the flushing pipe (8)；
The tube wall of second oil pipe (3) is equipped with the first inlet opening (10), and first inlet opening (10) is for will be from described
The blockages relieving fluid injected in the oil jacket annulus of casing (1) and second oil pipe (3) is flowed into the flushing pipe (8)；
The flushing pipe (8) is located at the inside of the sand control screen (6), and the sand control screen (6) is located at the sand sediment pipe (7)
The upper end of inside, the sand sediment pipe (7) is connected with the tube wall of the sand control screen (6)；
The tube wall of the upper end of the sand sediment pipe (7) is equipped with the second inlet opening (11), and second inlet opening (11) is used for ground
Production fluid in layer is flowed into the sand control screen (6)；
The packer (5) is located in the oil jacket annulus, for sealing the oil jacket annulus；Valve body (9) hanging setting
In described sleeve pipe (1), and it is located at the lower section of the sand sediment pipe (7).
2. sand control flow string according to claim 1, which is characterized in that the side outer wall of the packer (5) connects
The inner wall of described sleeve pipe (1), other side outer wall connects the outer wall of the upper end of the sand sediment pipe (7), and the packer (5) is located at
The top of second inlet opening (11).
3. sand control flow string according to claim 1, which is characterized in that in second oil pipe (3) be equipped with first into
Liquid channel (12), first inlet opening (10) are set to the pipe of first feed pathway (12) Yu second oil pipe (3)
The junction of wall；
One end of first feed pathway (12) connects first inlet opening (10), first feed pathway (12) it is another
One end connects the flushing pipe (8).
4. sand control flow string according to claim 3, which is characterized in that the quantity of first inlet opening (10) can be with
For one or more；
When the quantity of first inlet opening (10) is multiple, at least one first feed liquor is set in second oil pipe (3)
Channel (12)；
At least one first inlet opening is arranged in the junction of the tube wall of one the first feed pathway (12) and second oil pipe (3)
(10), one end of one first feed pathway (12) connects at least one described first inlet opening (10), and one the
The other end of one feed pathway (12) connects the flushing pipe (8).
5. sand control flow string according to claim 3, which is characterized in that be equipped in second oil pipe (3) for defeated
One end of the second feed pathway (13) of the production fluid out, second feed pathway (13) connects the oil well pump (4), institute
The other end for stating the second feed pathway (13) connects the sand control screen (6).
6. sand control flow string according to claim 5, which is characterized in that second feed pathway (13) is described the
Oil pipe channel in two oil pipes (3) in addition to first feed pathway (12).
7. sand control flow string according to claim 1, which is characterized in that the internal diameter of the sand sediment pipe (7) is greater than described
The outer diameter of sand control screen (6), and the length of the sand sediment pipe (7) is greater than the length of the sand control screen (6).
8. sand control flow string according to claim 1, which is characterized in that the sand control screen (6) is cutting seam sieve tube, gear
Sand grains diameter is 0.3~0.8mm.
9. sand control flow string according to claim 1, which is characterized in that the upper end of the oil jacket annulus is equipped with liquid feed valve
(14), the liquid feed valve (14) is for injecting the blockages relieving fluid；
The upper end of first oil pipe (2) is equipped with liquid valve (15), and the liquid valve (15) takes blocking out of for the blockages relieving fluid
Object.
10. sand control flow string according to claim 1, which is characterized in that the valve body (9) is suspension ball-and-seat；
The suspension ball-and-seat when being used for pumping production, opens the valve of the suspension ball-and-seat；To the sand control screen
(6), it when the oil well pump (4), first oil pipe (2) and second oil pipe (3) carry out de-plugging, closes the suspension and singly flows
The valve of valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821427299.9U CN209354104U (en) | 2018-08-31 | 2018-08-31 | Sand prevention production string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821427299.9U CN209354104U (en) | 2018-08-31 | 2018-08-31 | Sand prevention production string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209354104U true CN209354104U (en) | 2019-09-06 |
Family
ID=67779589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821427299.9U Active CN209354104U (en) | 2018-08-31 | 2018-08-31 | Sand prevention production string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209354104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117948262A (en) * | 2024-03-27 | 2024-04-30 | 中海油能源发展股份有限公司采油服务分公司 | Injection and production pump for coal-bed gas well |
-
2018
- 2018-08-31 CN CN201821427299.9U patent/CN209354104U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117948262A (en) * | 2024-03-27 | 2024-04-30 | 中海油能源发展股份有限公司采油服务分公司 | Injection and production pump for coal-bed gas well |
| CN117948262B (en) * | 2024-03-27 | 2024-05-28 | 中海油能源发展股份有限公司采油服务分公司 | Injection and production pump for coal-bed gas well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203081411U (en) | Anti-corrosion anti-scale and gas lift integrated well completion pipe string | |
| CN209354104U (en) | Sand prevention production string | |
| CN207063950U (en) | A kind of gravel particle insulates pit shaft henchnmrk test device | |
| CN106801588A (en) | The semiclosed mud pressure keeping circulation technology of artesian water earth-boring construction | |
| CN206458408U (en) | Backwash valve capable of backwashing, blocking removal and sand prevention | |
| CN109184658A (en) | A kind of biasing symmetric parallel formula sea-bottom shallow gas hydrates in-situ separating device | |
| CN206816187U (en) | A kind of adjustable flow string of fluid viscosity | |
| CN218862590U (en) | Oil gas collection system | |
| CN208950557U (en) | A kind of oil well reverse-filling tubing string | |
| CN110424923A (en) | Accumulation packing particle is realized from the method for water blockoff, from water plugging string and completion structure | |
| CN206267816U (en) | Continuous negative pressure sand flushing device and its system | |
| CN106677727A (en) | Continuous negative pressure sand washing device and system thereof | |
| CN206522126U (en) | A kind of sand filter of oil production well | |
| CN106468155A (en) | One kind no throttles one way entrapped water valve | |
| CN1306226C (en) | Well head system for geothermal tertiary system sandstone recharge | |
| CN116950607A (en) | Water-mixing blowout-preventing check valve for hollow pole of thickened oil well | |
| CN111997878B (en) | Sand-discharging oil-well pump | |
| CN207500816U (en) | Multichannel and multistage throttling test manifold | |
| CN203603870U (en) | 140MPa cyclone sand remover | |
| CN106761499A (en) | Equipment for separating liquid from solid under artesian water earth-boring construction slurry dwell condition | |
| CN206101149U (en) | Water -saving irrigation device | |
| CN204252884U (en) | A kind of novel low density Solid Free microvesicle negative pressure well-flushing sand flushing device | |
| CN206190247U (en) | Cleanout valve | |
| CN202731828U (en) | Oil layer leakage-proof device | |
| CN203626798U (en) | double-channel gas-liquid separator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |