CN208950552U - A kind of slicing and filling sand control pipe - Google Patents
A kind of slicing and filling sand control pipe Download PDFInfo
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- CN208950552U CN208950552U CN201821652253.7U CN201821652253U CN208950552U CN 208950552 U CN208950552 U CN 208950552U CN 201821652253 U CN201821652253 U CN 201821652253U CN 208950552 U CN208950552 U CN 208950552U
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Abstract
The utility model discloses a kind of slicing and filling sand control pipes, the slicing and filling sand control pipe includes hanging packer, insulate the outer tubing string of sand control, it further include filling tubing string in isolation bridge-type, washing pipe, the washing pipe setting fills inside tubing string in isolation bridge-type, the setting of filling tubing string is outside packing sand control inside tubing string in the isolation bridge-type, the outer tubing string of the packing sand control, it is isolated in bridge-type and fills tubing string, the upper end of washing pipe three is connect with hanging packer lower end three-layer pipe respectively, filling tubing string includes sequentially connected isolated tube from top to bottom in the isolation bridge-type, packing tool in bridge-type, fill crossover tool, sealing drum is arranged in compartment on the isolated tube.The invention solves one-trip string slicing and filling sand control technique during filling construction and anti-flushing well, causes slicing and filling cannot normal, safety and reliable the problem of implementing since reservoir heterogeneity forms channelling.
Description
Technical field
The utility model relates to oil exploitation slicing and filling sand control pipe and technique, especially a kind of slicing and filling sand-proof pipe
Column.
Background technique
Loose sand oil accumulation non-homogeneous multi-layer well is since the number of plies is more, interlayer is long, physical difference is big, currently used sand control work
Skill is mainly slicing and filling, including layering squeezes recycling gravel after (pressure break) gravel fills and be layered extruding and fills two classes, such as
" the one of " single multilayer gravel pack methods and the tool " of application number 201110038345.2, application number 201210534469.4
Secondary multiple gravel pack method ", " ball-throwing type selective sand control process pipe string and its method " of application number 201710177398.x,
The layering gravel filling that can be realized non-homogeneous multi-layer well is disclosed, realizes differentiation sand control, but such according to reservoir properties
Technology only carries out the stratum squeeze pack outside completion casing, and screen jacket annular space only leans on back-up sand reflux and the filling of remaining sand, filling
Density is poor, influences sand control production effect and sand control life.The skill of recycling gravel filling after it can be realized layering and squeeze
In art, embodiment there are first stratified formations to squeeze after again the pipe column type twice of general flow pack and one-trip string stratum squeeze and
Two kinds of flow pack, stratum squeeze pack and annular circulation fill tubing string twice and complete, and long construction period is costly, plays down tube
Column excitation back-up sand, which is returned, spits, general flow pack, and annular pack layer density is poor.Compared with the implementation of pipe column type twice, one
Time tubing string complete to have can effectively shorten short construction period, save operating cost, it is wide to improve advantages, the prospects such as filling density
It is wealthy.As " layered pipe column for squeeze packing sand control process " of application number 200410036213.6, application number 201310656621.0 it is " horizontal
High-pressure packing sand-control tubing string is segmented in well casing ", application number 201510134953.1 " thermal production well separate-layer fracturing sand control string and its
Anti-sand method " can be realized one-trip string stratum and squeeze and the integrated construction of flow pack, construction efficiency height, operation week
Phase is short, and sand control production effect is good.But due to the heterogeneity of reservoir, there are differences such as permeability and strata pressures, cause with
The presence of lower several respects problem: (1) there are when hypertonic or low-pressure stratum, the liquid of flow pack can be flowed into preferentially on top, be caused
Pack gravel is accumulated quickly, influences the compaction rate of filling；(2) it when upper formation pressure is higher than bottom oil layer, is filled in circulation
It fills out and easily excitation top oil reservoir returns and spits reservoir sand when anti-flushing well, leading to upper layer filling, difficulty of construction is big.(3) upper formation pressure is low
When bottom oil layer, the circulation easy channelling of anti-flushing well liquid causes sand-flushing difficult, is easy sand card tubing string, except being unable to normal construction
Outside, or even overhaul is caused.
Utility model content
The purpose of the utility model is to provide a kind of slicing and filling sand control pipes, solve one-trip string slicing and filling sand control skill
Art makes to fill that compaction rate is impacted, oil reservoir due to reservoir heterogeneity in filling construction and anti-flushing well process medium fluid channelling
It returns and spits the problem of reservoir sand and sand card tubing string etc. cause slicing and filling that cannot be normal, safe and reliably implement.
The purpose of this utility model can be achieved by the following technical measures:
The slicing and filling sand control pipe includes hanging packer, the outer tubing string of packing sand control, which is characterized in that further includes isolation
Tubing string, washing pipe are filled in bridge-type, the washing pipe setting fills inside tubing string in isolation bridge-type, filling pipe in the isolation bridge-type
Column setting outside packing sand control inside tubing string, filling tubing string in the outer tubing string of the packing sand control, isolation bridge-type, washing pipe three it is upper
End is connect with hanging packer lower end three-layer pipe respectively, and filling tubing string includes sequentially connected from top to bottom in the isolation bridge-type
Packing tool, filling crossover tool in isolated tube, bridge-type.
The purpose of this utility model can be also achieved by the following technical measures:
A kind of slicing and filling sand control pipe, which is characterized in that the outer tubing string upper end of the packing sand control by screw thread with
The outer tube of hanging packer connects, and filling tubing string upper end passes through the middle tube of screw thread and hanging packer in the isolation bridge-type
Connection, the inner tube of the washing pipe upper end insertion hanging packer, which is formed, to be tightly connected, hanging packer upper end connected pipes.
A kind of slicing and filling sand control pipe, which is characterized in that the outer tubing string of the packing sand control includes that at least two groups are anti-
Sandpipe, at least two outer packing tools, at least one isolation packer, blind pipe, the sand-proof pipe and outer packing tool oil pipe
Connection, isolation packer are connected between the sand-proof pipe on upper layer and the outer packing tool of lower layer, and it is anti-that the blind pipe is connected to packing
The outer tubing string bottom of sand.
A kind of slicing and filling sand control pipe, which is characterized in that the outer packing tool is equipped with the back-up sand radially penetrated through
Two, mouth；Sand-proof pipe opens up the gap radially penetrated through or mesh.
A kind of slicing and filling sand control pipe, which is characterized in that be symmetrically arranged with circulation in the bridge-type in packing tool
Mouth and filling each two, mouth, circulation port is located at packing tool lower end in bridge-type, connects up stower in bridge-type by circulation port
Has the axial passage opened up, it is empty that the top of axial passage leads to the isolated tube of filling tubing string and the annular of washing pipe in isolation bridge-type
Between, filling mouth be located at packing tool middle and upper part in bridge-type, by filling mouth be downwardly and outwardly connected to packing tool in bridge-type open up it is oblique
To channel；Packing tool is additionally provided with the ball seat of upper, middle and lower three in bridge-type, and upper ball base is located above filling mouth, and upper ball base passes through logical
Road shear pin is connected to packing tool central passage inner wall in bridge-type, and middle ball seat is located between circulation port and filling mouth, lower ball base position
Below circulation port.
A kind of slicing and filling sand control pipe, which is characterized in that the filling crossover tool is equipped with inlet opening, tubing string
Feed liquor bore closure when arriving squeeze pack after tripping in, when needing to carry out flow pack, movable tubing string exposes inlet opening, can establish
Circulation canal.
A kind of slicing and filling sand control pipe, it is characterised in that the upper end of isolated tube is equipped at least two uniformly distributed radial directions
Liquid mouth is returned in perforation.Isolated tube is equipped between at least two sealing drums, sealing drum and isolation packer and outer packing tool
The interior sealing of position is sealed.
A kind of slicing and filling sand control pipe, it is characterised in that washing pipe upper end be inserted into hanging packer bottom internal layer pipe into
Row is tightly connected, and packing tool top in bridge-type is inserted into lower end.
The utility model has the advantages that compared with prior art
Since the returning fluid of flow pack and the flushing fluid of anti-flushing well are all by filling tubing string and washing pipe in isolation bridge-type
Between annular space, avoid the sand control pipeline section of the target zone on the outer tubing string of packing sand control, it is not direct with other than target zone
Oil reservoir contact, liquid will not channelling to top is hypertonic or low-pressure stratum, establish circulation and the anti-flushing well channel of smoothness, it is ensured that annular space
Fill density；Backwash in situ completely avoids sand card tubing string, it is ensured that construction is smooth.Meanwhile top high pressure formation will not be by
Reservoir sand caused by liquid flowing motivates, which returns, to be spat, and the security reliability of construction is improved.The invention solves one-trip string layering
Filling anti-sand technology causes slicing and filling cannot during filling construction and anti-flushing well, since reservoir heterogeneity forms channelling
Normally, safety and reliable the problem of implementing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is lower layer stratum squeeze pack status diagram；
Fig. 3 is lower layer's annular pack status diagram,
Fig. 4 is lower layer's sand washing backwash schematic diagram；
Fig. 5 is intermediate target zone stratum squeeze pack status diagram；
Fig. 6 is intermediate target zone sand washing backwash schematic diagram；
Fig. 7 is intermediate target zone annular pack status diagram；
Fig. 8 is intermediate target zone sand washing backwash schematic diagram.
In figure: filling tubing string 102 and washing pipe 103 in the outer tubing string 101 of packing sand control, isolation bridge-type；
Hanging packer 1, outer tube 2, the first outer packing tool 3, the first sand-proof pipe 4, the first isolation packer 5, second
The outer packing tool 9 of outer packing tool 6, the second sand-proof pipe 7, the second isolation packer 8, third, third sand-proof pipe 10, blind pipe 11,
Oil pipe 12, inner tube 14, middle tube 15, returns liquid mouth 16, isolated tube 17, sealing drum 18, back-up sand mouth 19, fills in bridge-type casing 13
Fill out tool 20, channel shear pin 21, upper ball base 22, axial passage 23, filling mouth 24, slanted channel 25, circulation port 26, middle ball seat
27, lower ball base 28, filling crossover tool 29, inlet opening 30.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1 to Fig. 8, the utility model provides a kind of technical solution: a kind of slicing and filling sand control pipe is (with three layers
For), it is shown in Figure 1, including insulate tubing string 101 outside sand control, fill tubing string 102 and 103 three-layer pipe of washing pipe in isolation bridge-type
Column.Tubing string is topmost hanging packer 1, and the lower part of hanging packer is equipped with outer tube 2, middle tube 15 and 14 3 layers of inner tube
Pipe, outer tube 2 are threadedly coupled the first outer packing tool 3 on the outer tubing string 101 of packing sand control, are then sequentially connected with the first sand-proof pipe
4, the outer packing tool of the first isolation packer 5, the second outer packing tool 6, the second sand-proof pipe 7, the second isolation packer 8, third
9, third sand-proof pipe 10 and blind pipe 11；Middle tube 15 is threadedly coupled the isolated tube 17 of filling tubing string 102 in isolation bridge-type, isolated tube
17 lower parts connect packing tool 20 in bridge-type, bottom connection filling crossover tool 29；Inner tube 14 is a seal pipe, washing pipe
103 tops are inserted into inner tube 14 and form sealed connection, in 103 bottom of washing pipe insertion isolation bridge-type in the bridge-type of filling tubing string 102
20 top of packing tool.1 upper end of hanging packer is integrated, and inside is equipped with left-hand thread (left hand thread), and rotating forward tubing string can will seal
It is disengaged every tubing string 101 outside sand control with the interior combined string for filling tubing string 102 and the formation of washing pipe 103 is isolated in bridge-type.
It is equipped with back-up sand mouth 19 on the outer packing tool 9 of first outer packing tool 3, the second outer packing tool 6, third, to take
Sand flow body provides channel；
First sand-proof pipe 4, the second sand-proof pipe 7, third sand-proof pipe 10 are the pipe with certain gap or mesh, also
It is sand control screen, can produces oil stream for construction and later period and channel is provided.
The upper end of isolated tube 17, which is equipped with, returns liquid mouth 16, is equipped with several sealing drums 18 also according to hierarchy number on isolated tube 17, close
Position between sealed tube 18 and the isolation packer and outer packing tool of each layer on the outer tubing string 101 of packing sand control carries out interior close
Envelope blocks the annular space for insulating the outer tubing string 101 of sand control and being isolated between the interior filling tubing string 102 of bridge-type.
Circulation port 26 and filling 24 each two, mouth are symmetrically arranged in bridge-type in packing tool 20, circulation port 26 is located under tool
End is equipped with axial passage 23 by circulation port 26 upwards, and the top of axial passage 23 leads to filling tubing string 102 in isolation bridge-type
The annular space of isolated tube 17 and washing pipe 103, filling mouth 24 are located at middle and upper part, are in downwardly and outwardly with axial direction at one by filling mouth 24
Determine angle setting slanted channel 25.Packing tool 20 is additionally provided with the ball seat of upper, middle and lower three in bridge-type, and upper ball base 22 is located at filling
24 top of mouth which is provided with channel shear pin 21, and middle ball seat 27 is located between circulation port 26 and filling mouth 24, and lower ball base 28, which is located at, to follow
26 lower section of collar extension.Preset corresponding steel ball plays the role of ball-and-seat on each ball seat.
Fill crossover tool 29 be equipped with inlet opening 30, after tubing string tripping in arrive squeeze pack when feed liquor bore closure, need into
When row flow pack, movable tubing string exposes inlet opening 30, can establish circulation canal.
Between each tool of the outer tubing string 101 of packing sand control in the case where ensuring sand-proof pipe covering production oil reservoir well section position,
Connect by conventional oil pipe or casing connection, or directly.The length of isolated tube 17 on filling tubing string 102 in bridge-type is isolated according to the
The contraposition of packing tool 20 determines in three outer 9 positions of packing tool and bridge-type.
Isolation packer, outer packing tool, filling crossover tool are technology well known in the art, sand-proof pipe, sealing drum
For this field routine techniques, directly application connection use.
A kind of anti-sand method of slicing and filling sand control pipe of the utility model, referring to fig. 2~Fig. 8 the steps include:
(1) a kind of slicing and filling sand control pipe is passed through into oil pipe 12 down toward design position from ground；
(2) it is beaten from oil pipe 12 hydraulic, hanging packer is made to set 1；Rotation pipeline 12 make to insulate the outer tubing string 101 of sand control with every
It is disengaged from the interior combined string that tubing string 102 and washing pipe 102 are formed is filled in bridge-type；It lifts and is filled in the isolation bridge-type that oil pipe 12 carries
The interior combined string that tubing string 102 and washing pipe 102 are formed is filled out, beats hydraulic in oil pipe 12, sets the second isolation packer from bottom to top
8, the first isolation packer 5 realizes each layer annular space packing, state shown in Fig. 1；
(3) combined string in transferring makes 25 collar extension of slanted channel and the outer tubing string of packing sand control of packing tool 20 in bridge-type
The back-up sand mouth 19 of the outer packing tool 9 of third on 101 is aligned, and is beaten hydraulic 18-20MPa and is interrupted channel shear pin 21, upper ball base 22
It falls, filling channel is opened；
(4) filling mortar is pumped into oil pipe 12 on ground, take sand flow body from washing pipe 103 packing tool 20 in bridge type
Slanted channel 25 and the outer packing tool 9 of third back-up sand mouth 19, pass through the outer stratum of oil reservoir perforation position sleeve pipe 13, progress
The squeeze pack on stratum, state shown in Fig. 2；
(5) tubing string is rotated, the inlet 30 of open fill crossover tool 29 is taken sand flow body and still passed through downwards from washing pipe 103
The back-up sand mouth 19 of the slanted channel 25 of packing tool 20 and the outer packing tool 9 of third in bridge-type, fluid is by sand-proof pipe 10 through overcharging
The inlet 30 for filling out crossover tool 29 flows into inside tubing string, the ball on lower ball base 28 is washed open, out of bridge-type on packing tool 20
Circulation port 26 is upwardly into the annular space in isolation bridge-type between filling tubing string 102 and washing pipe 103, stream through shaft orientation flowing channel 23
Liquid mouth 16 is returned out by the annular space of oil pipe 12 and casing 13 to ground, forms direct circulation channel, liquid constantly returns out, and pack gravel is not
Disconnected filter is stayed in screen jacket annular space, and the flow pack of casing 13 and 10 annular space of screen casing, state shown in Fig. 3 are completed；
(6) flushing fluid is injected from ground from oil pipe 12 and 13 annular space of casing, is returned and is filled in the entrance isolation bridge-type of liquid mouth 16
Annular space between tubing string 102 and washing pipe 103, by the shaft orientation flowing channel 23 in bridge-type on packing tool 20, from circulation port 26
In inflow bridge-type inside packing tool 20, washes the ball on intermediate ball seat 27 open, returned to through upper ball base 22 from washing pipe 103 to oil pipe 12
Ground flushes out sand more than the filling in washing pipe 103, lifts tubing string, state shown in Fig. 4 convenient for subsequent construction；
(7) interior combined string is above mentioned, 25 collar extension of slanted channel and the outer tubing string of packing sand control of packing tool 20 in bridge-type are made
The back-up sand mouth 19 of second outer packing tool 6 communicates on 101；
(8) as needed, when target zone needs to carry out flow pack after the squeeze pack of stratum when top, repeat step
(4), (5), (6), referring to fig. 2, Fig. 3, Fig. 4；When target zone only needs to carry out stratum squeeze pack, repeat (4), (6),
Referring to Fig. 5, Fig. 6；When target zone only needs to carry out annular circulation filling, repeat step (5), (6), referring to Fig. 7, Fig. 8.
After each interval of interest whole filling anti-sand, the interior filling tubing string of isolation bridge-type and washing pipe shape that oil pipe carries are proposed
At interior combined string.
In the description of the present invention, it should be understood that temporald eixis or positional relationship are based on the figure
Orientation or positional relationship is merely for convenience of description the utility model, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (8)
1. a kind of slicing and filling sand control pipe, including tubing string outside hanging packer, packing sand control, which is characterized in that further include every
From tubing string, washing pipe is filled in bridge-type, the washing pipe setting fills inside tubing string in isolation bridge-type, filling in the isolation bridge-type
Tubing string setting is outside packing sand control inside tubing string, filling tubing string in the outer tubing string of the packing sand control, isolation bridge-type, washing pipe three
Upper end is connect with hanging packer lower end three-layer pipe respectively, and filling tubing string includes being sequentially connected from top to bottom in the isolation bridge-type
Isolated tube, packing tool, filling crossover tool in bridge-type.
2. a kind of slicing and filling sand control pipe according to claim 1, which is characterized in that on the outer tubing string of the packing sand control
End is connected by the outer tube of screw thread and hanging packer, and filling tubing string upper end is sealed by screw thread and suspension in the isolation bridge-type
It is connected every the middle tube of device, the inner tube of the washing pipe upper end insertion hanging packer, which is formed, to be tightly connected, on hanging packer
Hold connected pipes.
3. a kind of slicing and filling sand control pipe according to claim 1 or 2, which is characterized in that the packing sand control outer tube
Column includes at least two groups sand-proof pipe, at least two outer packing tools, at least one isolation packer, blind pipe, the sand-proof pipe and
Outer packing tool is connected with oil pipe section, and isolation packer is connected between the sand-proof pipe on upper layer and the outer packing tool of lower layer, institute
It states blind pipe and is connected to the outer tubing string bottom of packing sand control.
4. a kind of slicing and filling sand control pipe according to claim 3, which is characterized in that the outer packing tool is equipped with diameter
To two, back-up sand mouth of perforation；Sand-proof pipe opens up the gap radially penetrated through or mesh.
5. a kind of slicing and filling sand control pipe according to claim 1 or 2, which is characterized in that stower in the bridge-type
Circulation port and filling each two, mouth are symmetrically arranged in tool, circulation port is located at packing tool lower end in bridge-type, upward by circulation port
The axial passage that packing tool opens up in connection bridge-type, the top of axial passage lead to the isolated tube of filling tubing string in isolation bridge-type
With the annular space of washing pipe, fills mouth and be located at packing tool middle and upper part in bridge-type, be downwardly and outwardly connected in bridge-type and filled by filling mouth
The slanted channel that the tool of filling out opens up；Packing tool is additionally provided with the ball seat of upper, middle and lower three in bridge-type, and upper ball base is located on filling mouth
Side, upper ball base are connected to packing tool central passage inner wall in bridge-type by channel shear pin, and middle ball seat is located at circulation port and filling
Between mouthful, lower ball base is located at below circulation port.
6. a kind of slicing and filling sand control pipe according to claim 5, which is characterized in that set on the filling crossover tool
There is inlet opening, feed liquor bore closure when arriving squeeze pack after tubing string tripping in, when needing to carry out flow pack, movable tubing string is by inlet opening
Expose, circulation canal can be established.
7. a kind of slicing and filling sand control pipe according to claim 1 or 2, which is characterized in that the upper end of the isolated tube
Equipped at least two it is uniformly distributed radially penetrate through return liquid mouth, isolated tube is equipped at least two sealing drums, and sealing drum is sealed with being isolated
The interior sealing of position between device and outer packing tool is sealed.
8. a kind of slicing and filling sand control pipe according to claim 1 or 2, it is characterised in that washing pipe upper end insertion suspension envelope
It is connected and sealed every device bottom internal layer pipe, packing tool top in bridge-type is inserted into lower end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821652253.7U CN208950552U (en) | 2018-10-11 | 2018-10-11 | A kind of slicing and filling sand control pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821652253.7U CN208950552U (en) | 2018-10-11 | 2018-10-11 | A kind of slicing and filling sand control pipe |
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| CN208950552U true CN208950552U (en) | 2019-06-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685648A (en) * | 2019-11-01 | 2020-01-14 | 东营市瑞丰石油技术发展有限责任公司 | Filling tool and well completion string |
| CN111042776A (en) * | 2018-10-11 | 2020-04-21 | 中国石油化工股份有限公司 | Anti-channeling layered filling sand prevention pipe column and method |
| CN113073963A (en) * | 2021-06-08 | 2021-07-06 | 东营市正能石油科技有限公司 | Filling tool for oil field operation |
-
2018
- 2018-10-11 CN CN201821652253.7U patent/CN208950552U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042776A (en) * | 2018-10-11 | 2020-04-21 | 中国石油化工股份有限公司 | Anti-channeling layered filling sand prevention pipe column and method |
| CN111042776B (en) * | 2018-10-11 | 2023-08-04 | 中国石油化工股份有限公司 | Anti-crossflow layered filling sand prevention pipe column and method |
| CN110685648A (en) * | 2019-11-01 | 2020-01-14 | 东营市瑞丰石油技术发展有限责任公司 | Filling tool and well completion string |
| CN113073963A (en) * | 2021-06-08 | 2021-07-06 | 东营市正能石油科技有限公司 | Filling tool for oil field operation |
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