CN207393170U - A kind of high-strength hypertonic low-resistance sand screen and assorted column jacket - Google Patents
A kind of high-strength hypertonic low-resistance sand screen and assorted column jacket Download PDFInfo
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- CN207393170U CN207393170U CN201720961090.XU CN201720961090U CN207393170U CN 207393170 U CN207393170 U CN 207393170U CN 201720961090 U CN201720961090 U CN 201720961090U CN 207393170 U CN207393170 U CN 207393170U
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- base tube
- sand
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Abstract
The utility model discloses a kind of high-strength hypertonic low-resistance sand screen and assorted column jackets, sand screen includes center base tube, the liquid flow hole of radially perforation is opened up on the base tube of center, resin filter sand body is arranged outside the base tube of center, embedded with reinforcement skeleton in the resin filter sand body, the skeleton of strengthening indulges muscle and laterally uniformly distributed mesh-supported annular muscle including longitudinally uniformly distributed mesh-supported, and the mesh-supported indulges muscle and the integrally welded formula structure of mesh-supported annular muscle.The annular space formed between the filter sand body and center base tube was used as oily passage.The mesh-supported indulges muscle upper and lower ends and is all connected with respective anticollision support ring, and the anticollision support ring is welded on the base tube outer wall of center.The utility model can effectively solve the problem that descending liquid contradiction after high shale content sensibility loose sand oil accumulation sand control, reduce sand control cost, improve oil well Discharge rate, extend the sand control life, improve sand controlling result.
Description
Technical field
The utility model is related to oil exploitation down-hole sand-proof tool field, specifically a kind of high-strength hypertonic low-resistance filter sand
Pipe and assorted column jacket.
Background technology
Sensibility loose sand oil accumulation abundant in petroleum deposits, but as oil field development is deeply so that sand production is more tight
Weight.At present, common sand control measure mainly has pressure break（Filling）Sand control, sand screen sand control and chemical sand control.Since sensibility is dredged
There is the problem of serious, shale content is high, and sorting is poor of shaking out in loose sandstone oil reservoir, it is excessive to face sand control especially for high angle hole
Or the contradiction of anti-incessantly sand：
1. pressure break（Filling）Sand control is packing filling integrated tool connection wire-wrapped screen G.I.H, and wire-wrapped screen is aligned
Oil reservoir position is selected a fixed displacement and certain pressure, back-up sand is carried into stratum using load fluid, using TSOP fracturing technology
Making load fluid, then expansion forms the high flow conductivity seepage channel of short-wide, in well with filling crack in fracture tip sand fallout
Certain thickness filling sand body is formed around cylinder, so as to achieve the purpose that increase production sand control.This method initial stage can significantly improve oil well
Production capacity, but produce later stage liquid measure and decline substantially.Stratum, annular space and sand control caused by analysis shows, reservoir sand and formation contaminant object
Tubing string blocks, and permeability reduction is the main reason for influencing liquid measure.This method is of high cost there are sand control, the lances such as easy descending liquid after sand control
Shield.
2. sand screen sand control mainly includes precise micropore filter, is prefilled with the sand control methods such as filter, resin filter, corundum filter, this is anti-
It is sand mode construction is simple, at low cost, but precise micropore filter, filter is prefilled with oil well production, stratum Extra-fine sand, shale migration
Intrusion, easily blocks sand control pipe, production capacity is caused to decline；Resin filter, corundum are filtered because its quality is more crisp, in transportational process and complexity
Fragile under wellbore conditions, success rate is relatively low, can not large-scale promotion application using being limited.
3. chemical sand control commonly uses sand-fixating agent bag by squeezing into sand-fixating agent consolidated formation sand to stratum so as to fulfill sand control
Include phenolic resin, Lauxite, furfural resin, epoxy resin, HY-1 resins, organosilicon etc.；Or two kinds of sand-fixating agents of AB agent are handed over
For injection.Though this method does not influence oil well productivity, because sand control intensity is low, the sand control life is short, causes the frequent operation of oil well, increases
Add production cost.
For this purpose, scene needs a kind of anti-sand method that can effectively solve the problem that high shale content sensibility loose sand oil accumulation, it can
Effectively guard against sand, extend the sand control life, and descending liquid contradiction after sand control can be solved, improve oil well Discharge rate.
By retrieval, application number 201620916506.1, publication date 2017.02.15 discloses a kind of resin sand screen, including
Center base tube and resin sand body, the tube body of center base tube is equipped with liquid flow hole, both ends are top connection and lower contact respectively.Center base
Resin sand body, is fixedly arranged at the outside of center base tube by the tube wall welding water conservancy diversion supporting rib of pipe, and protection network is fixedly arranged at resin sand
The outer wall of body.
Patent document disclosed above differs in technical solution with the utility model.More than technology is in resin sand body
Inner and outer wall sets skeleton, and structure is excessively complicated, and filter effect is bad, and the intensity that the utility model does skeleton is more
Height, and be embedded in inside filter sand body, simple in structure, intensity does not also reduce, it is often more important that releases filter sand body in
Oil flow channel space between heart base tube, further reduces the pressure at liquid flow hole.
The content of the invention
The purpose of this utility model is to provide a kind of high-strength hypertonic low-resistance sand screen and assorted column jackets, can effectively solve the problem that
Descending liquid contradiction after high shale content sensibility loose sand oil accumulation sand control reduces sand control cost, improves oil well Discharge rate, and extending sand control has
The effect phase improves sand controlling result.The intensity that skeleton is done more is increased, and is embedded in inside filter sand body, simple in structure, intensity
It does not reduce, it is often more important that release the oil flow channel space between filter sand body and center base tube, further reduce liquid stream
Pressure at hole.
In order to achieve the above objectives, the utility model employs following technical solution, a kind of high-strength hypertonic low-resistance sand screen,
Including center base tube, the liquid flow hole of radially perforation is opened up on the base tube of center, resin filter sand body, the tree are arranged outside the base tube of center
It is described to strengthen skeleton and include longitudinally uniformly distributed mesh-supported indulging muscle and laterally uniformly distributed netted embedded with strengthening skeleton in fat filter sand body
The annular muscle of support, the mesh-supported indulge muscle and the integrally welded formula structure of mesh-supported annular muscle.
The annular space formed between the filter sand body and center base tube was used as oily passage.
The mesh-supported indulges muscle upper and lower ends and is all connected with respective anticollision support ring, the anticollision support ring welding
On the base tube outer wall of center.
The center base tube upper end connects top connection, lower end connection lower contact.
In order to achieve the above objectives, the utility model employs following technical solution, and one kind is suitable for straight well or hole deviation is small
In the high-strength hypertonic low-resistance sand screen open type assorted column jacket of 30 ° of oil wells, screen pipe hanger is sequentially connected from top to bottom, upper resin is helped
Positive device, upper back-off connector, high-strength hypertonic low-resistance sand screen, lower resin centralizer, lower back-off connector, leather cup envelope；It is high-strength hypertonic low
Sand screen is hindered, including center base tube, the liquid flow hole of radially perforation is opened up on the base tube of center, resin filter sand is arranged outside the base tube of center
Body, the resin filter sand body is interior embedded with skeleton is strengthened, and the skeleton of strengthening indulges muscle and transverse direction including longitudinally uniformly distributed mesh-supported
Uniformly distributed mesh-supported annular muscle, the mesh-supported indulge muscle and the integrally welded formula structure of mesh-supported annular muscle, the filter
The annular space formed between sand body and center base tube was used as oily passage, the mesh-supported indulge muscle upper and lower ends be all connected with it is respective
Anticollision support ring, the anticollision support ring are welded on the base tube outer wall of center, and the center base tube upper end connects top connection,
Lower end connects lower contact.
The screen pipe hanger connects resin centralizer by the first oil pipe short circuit, and the leather cup seals up end and passes through the second oil
The lower back-off connector of pipe short circuit connection, leather cup envelope lower end connect the 3rd oil pipe short circuit.
In order to achieve the above objectives, the utility model employs following technical solution, and one kind is suitable for hole deviation and is more than 30 ° of oil
The high-strength hypertonic low-resistance sand screen enclosed assorted column jacket of well, which is characterized in that be sequentially connected screen pipe hanger, upper tree from top to bottom
Fat centralizer, upper back-off connector, high-strength hypertonic low-resistance sand screen, lower resin centralizer, lower back-off connector, silk plug；It is high-strength hypertonic
Low-resistance sand screen including center base tube, opens up the liquid flow hole of radially perforation, resin filter is arranged outside the base tube of center on the base tube of center
Sand body, the resin filter sand body is interior embedded with skeleton is strengthened, and the skeleton of strengthening indulges muscle and horizontal stroke including longitudinally uniformly distributed mesh-supported
To uniformly distributed mesh-supported annular muscle, the mesh-supported indulges muscle and the integrally welded formula structure of mesh-supported annular muscle, described
The annular space formed between filter sand body and center base tube was used as oily passage, and the mesh-supported is indulged muscle upper and lower ends and is all connected with each
Anticollision support ring, the anticollision support ring is welded on the base tube outer wall of center, is connect in the center base tube upper end connection
Head, lower end connection lower contact.
The screen pipe hanger connects resin centralizer by the first oil pipe short circuit, and the lower back-off connector passes through the second oil
Pipe short circuit connects silk plug.
Compared to the prior art, the utility model has the advantages that：
Sand screen structure innovation.Anti-clogging of the design based on excessively oily passage, easy sediment outflow pipe structure, it is micro- to enhance stratum
Appropriate sand block is realized in effective exclusion of grain.The filter sand body of ordinary resin filter is directly fixedly arranged on central tube, and the utility model is high
There are 2-4mm gaps between strong hypertonic low-resistance sand screen design filter sand body and central tube, which was oily passage, through filter sand body
Shale and Extra-fine sand can therefrom heart base tube be discharged with formation fluid, be not easy to deposit herein, high permeability can be kept for a long time, it is real
Now appropriate sand block；And the design increases effective seepage area of filter sand body, avoids filter sand body perforation thing in production process
Therefore.Early stage was not left in oily pass resin sand screen production process since liquid pass hole position pressure is larger, easily caused filter
Sand body perforation accident.
Sand screen intensity improves.First, embedding reticular supporting structure is sintered in filter sand body, the mechanical strength of filter sand body is improved,
Second is that both sides are equipped with anticollision support ring up and down for filter sand body, so as to whole antidetonation, drop resistant, crush resistance strength is high, third, filter body is long
Degree is designed as 1 meter of 1 section, so as to increase sand control pipe overall flexibility, realizes the safe tripping in of high angle hole, long-acting production.
Sand block precision is adjustable.Different oil wells can be analyzed according to oil well sand sample, one plan of a well, using different containing consolidated sand groups
Conjunction, containing consolidated sand and resin ratio reach sand control, appropriate sediment outflow, liberate reservoir, the purpose extended the expiration date.
Compared with 201620916506.1 publication of application number, the intensity that the utility model does skeleton is more increased, and
And be embedded in inside filter sand body, simple in structure, intensity does not also reduce, it is often more important that releases filter sand body and center base tube
Between oil flow channel space, further reduce the pressure at liquid flow hole.
The sand control pipe later stage easily salvages.Design resin centralizer and back-off connector, the pipe string combination design of optimization sand screen.Often
Root sand screen connects 1 resin centralizer；According to hole deviation per 10m or per the mating 1 back-off connector of 5m, later stage set milling back-off is facilitated to beat
Fishing reduces later stage salvaging difficulty.
Resin centralizer described in the utility model is high-intensity resin centralizer, it is ensured that sand screen is entering well overall process
Can be placed in the middle, it avoids close to casing wall, reduces abrasion of the pit shaft to filter sand body during going into the well, it is ensured that success of going into the well
Rate, and be easy to cover milling, later stage fishing is not influenced.
Back-off connector described in the utility model is buckled to connector for existing standard oil pipe.Its internal diameter, connector button-type with it is high-strength
Hypertonic low-resistance filter sand tube hub base tube is consistent, and the later stage is facilitated to salvage；
Screen pipe hanger described in the utility model is Y445 series screen pipe hangers, is selected according to casing inner diameter and hole deviation
Its specification.
Leather cup envelope described in the utility model is sealed for existing sand block leather cup, internal diameter, connector button-type and high-strength hypertonic low-resistance
Filter sand tube hub base tube is consistent, and the later stage is facilitated to salvage；Its packing element rubber is temperature resistant rubber, and outer diameter is more than casing inner diameter.
It is less than 30 ° of oil wells or straight well for hole deviation, designs open type assorted column jacket, increases sand setting volume.Mating leather cup envelope, if
Count open type sand control pipe so that after oil well produces for a long time, the reservoir sand into sand control pipe central tube can sink to pit shaft bottom
The sand setting pocket in portion extends the sand control cycle.
It is more than 30 ° of oil wells for hole deviation, designs enclosed assorted column jacket.On high-strength hypertonic low-resistance filter sand pipe unit oil overlay
Under each 1-2m.In production process, formation fluid into pit shaft and is passed through oil well pump and is evacuated to ground by high-strength hypertonic low-resistance sand screen
Face, formation particle are blocked staying in the external side of filter sand, and shale and Extra-fine sand can pass through filter sand body, be deposited on inside tail pipe, make height
Strong hypertonic low-resistance sand screen can keep high permeability for a long time, realize appropriate sand block.
High-strength hypertonic low-resistance sand screen chuck special is designed, realizes the single vertical lifting of well head, avoids ground entirety
Damage risk of colliding with during going into the well again after assembling, improves success rate of going into the well.
Description of the drawings
Fig. 1 is high intensity anti-blocking sand filter pipe structure diagram；
Fig. 2 is high intensity anti-blocking sand filter pipe A-A ' diagrammatic cross-sections；
Fig. 3 is that high intensity anti-blocking sand filter pipe is gone into the well chuck special structure diagram；
Fig. 4 is high intensity anti-blocking sand filter pipe assorted column jacket open type sand control schematic diagram；
Fig. 5 is high intensity anti-blocking sand filter pipe assorted column jacket enclosed sand control schematic diagram.
In figure：It is top connection 6-1, center base tube 6-2, anticollision support ring 6-3, liquid flow hole 6-4, excessively oily passage 6-5, netted
The vertical muscle 6-6 of support, mesh-supported annular muscle 6-7, resin filter sand body 6-8, lower contact 6-9；
Bayonet Q1, chuck lever Q2, disk body of chuck Q3.
Flow string 1, screen pipe hanger 2, oil pipe short circuit 3, resin centralizer 4, back-off connector 5, high-strength hypertonic low-resistance filter
Sandpipe 6, silk plug 7, leather cup envelope 8.
Specific embodiment
Detailed description and technology contents in relation to the utility model, cooperation description of the drawings is as follows, however attached drawing is only to refer to
With purposes of discussion, not it is used for being any limitation as the utility model.
Referring to attached drawing 1 and attached drawing 2, a kind of high-strength hypertonic low-resistance sand screen is by top connection 6-1, center base tube 6-2, anticollision
Support ring 6-3, liquid flow hole 6-4, excessively oily passage 6-5, mesh-supported indulge muscle 6-6, mesh-supported annular muscle 6-7, resin filter sand body
6-8, lower contact 6-9 are formed.
Center base tube upper end connect top connection 6-1, lower end connection lower contact 6-9, top connection 6-1 be female thread, lower contact 6-9
Pin thread connects centralizer or back-off connector respectively.
Center base tube 6-2 is metal oil conduit, and tube body is equipped with liquid flow hole 6-4, and liquid flow hole aperture is 8-10mm.
Resin filter sand body 6-8 is formed by quartz sand and plastic bonding, and wherein quartz sand particle size size is according in reservoir granularity
Value selection, resin are selected according to reservoir temperature, if formation temperature is less than 70 DEG C, select epoxy resin, 70-90 DEG C of choosing of formation temperature
Select phenolic resin.
Muscle 6-6, mesh-supported annular muscle 6-7 are indulged embedded with mesh-supported inside resin filter sand body 6-8, similar building pours water
During mud, the bar-mat reinforcement of braiding inside concrete column or cement plate significantly improves the mechanical strength of resin filter sand body 6-8.Netted branch
The vertical muscle 6-6 of support, mesh-supported annular muscle 6-7 materials are metal wrapping wire, and the two by spot-welded together, and weld by both ends
On anticollision support ring 6-3.
Resin filter sand body 6-8 is welded together by anticollision support ring 6-3 and center base tube 6-2, resin filter sand body 6-8
Oily passage 6-5, gap 2-4mm were left between the base tube 6-2 of center.By excessively oily passage 6-5, through resin filter sand body 8
Shale and Extra-fine sand can with formation fluid therefrom heart base tube 6-2 discharge, be not easy to deposit herein, Thief zone can be kept for a long time
Rate realizes appropriate sand block；And excessively oily passage 6-5 designs increase effective seepage area of resin filter sand body 6-8, avoid life
Filter sand body perforation accident, improves the sand control life during production.
During high-strength hypertonic low-resistance sand screen 6 is gone into the well, first tripping in bottom silk plug 7, tubing nipple 3 are buckled to connector 5, help
Positive device 4 etc., chuck special are stuck on first segment filter center base tube 6-2, and by first segment sand screen lower going-into-well, bayonet Q1 width is slightly
More than the outer diameter of center base tube 6-2, and the outer diameter less than top connection 6-1, since bayonet width is less than top connection 6-1, at this time specially
With chuck seat on well head, sand screen combination is suspended on by chuck in well, and 6-1 is connected in exposing.It is sequentially connected resin centralizer
4th, connector 5, next high-strength hypertonic low-resistance sand screen 6 etc. are buckled to, takes out chuck special, tripping in second saves sand screen, with such
It pushes away, then all resins centralizer 4 needed for tripping in, back-off connector 5, high-strength hypertonic low-resistance sand screen 6 etc. successively.Chuck special is used
Sand screen is hung in applying time card, does not enter well.According to the length that the actual thickness adjustment sand control pipe of oil well combines, well head list is realized
The vertical lifting of root avoids the damage risk of colliding with during going into the well again after the overall package of ground, improves success rate of going into the well.
Embodiment 1：Open type tubing string：
It is a kind of mating less than the high-strength hypertonic low-resistance sand screen open type of 30 ° of oil wells suitable for straight well or hole deviation referring to attached drawing 4
Tubing string is followed successively by screen pipe hanger 2, oil pipe short circuit 3, resin centralizer 4, back-off connector 5, high-strength hypertonic low-resistance filter from top to bottom
Sandpipe 6, resin centralizer 4, back-off connector 5, oil pipe short circuit 3, leather cup envelope 8, oil pipe short circuit 3.Pipe string combination entire length is than oil
The long 2-4m of the actual perforating length of well so that high-strength hypertonic low-resistance filter sand pipe unit oil overlay each 1-2m up and down.Screen pipe hanger 2
Set position avoids casing coupling.
High-strength hypertonic low-resistance sand screen both ends are top connection 6-1 and lower contact 6-9 respectively.Top connection 6-1 is female thread, is connected
Resin centralizer 4；Lower contact 6-9 pin threads, connection back-off connector 5.High-strength every 2 sand screens of hypertonic low-resistance sand screen connect 1 tree
Fat centralizer connects back-off connector 1 per 10m.
Tripping in flow string 1 after lower filter, in production process, formation fluid is by high-strength hypertonic low-resistance sand screen, into well
Cylinder simultaneously passes through oil well pump and is evacuated to ground, and formation particle is blocked staying in the screen pipe hanger of the external side of filter sand and leather cup envelope composition
Annular space treats that annular space is filled up by reservoir sand, and stratum no longer shakes out, and formation skeleton will not be broken caused by largely shaking out
Bad influence production capacity may also function as protection sleeve pipe and the effect of filter sand body.Shale and Extra-fine sand can pass through filter sand body, pass through oil pipe short circuit
Wellbore bottom is deposited on, makes high-strength hypertonic low-resistance sand screen that can keep high permeability for a long time, realizes appropriate sand block.
Embodiment 2：Enclosed tubing string：
Referring to attached drawing 5, a kind of high-strength hypertonic low-resistance sand screen enclosed assorted column jacket for being more than 30 ° of oil wells suitable for hole deviation,
Screen pipe hanger 2, oil pipe short circuit 3, resin centralizer 4, back-off connector 5, high-strength hypertonic low-resistance sand screen are followed successively by from top to bottom
6th, resin centralizer 4, back-off connector 5, oil pipe short circuit 3, silk plug 7.High-strength hypertonic low-resistance filter sand pipe unit oil overlay is each up and down
1-2m.Screen pipe hanger set position avoids casing coupling.
High-strength hypertonic low-resistance sand screen both ends are top connection 6-1 and lower contact 6-9 respectively.Top connection 6-1 is female thread, is connected
Resin centralizer 4；Lower contact 6-9 pin threads, connection back-off connector 5.High-strength every 1 sand screen of hypertonic low-resistance sand screen connects 1 tree
Fat centralizer connects back-off connector 1 per 5m.
Tail pipe bottom connects silk plug and resin centralizer, resin centralizer reduces go into the well during pit shaft to the mill of filter sand body
Damage, it is ensured that success rate of going into the well.
In production process, formation fluid into pit shaft and is passed through oil well pump and is evacuated to ground by high-strength hypertonic low-resistance sand screen
Face, formation particle are blocked staying in the external side of filter sand, and shale and Extra-fine sand can pass through filter sand body, be deposited on inside tail pipe, make height
Strong hypertonic low-resistance sand screen can keep high permeability for a long time, realize appropriate sand block.
Implementation result
By in March, 2017, which implements 45 wells in Shengli Oil Field Zhuan Xiyou areas, and maximum hole deviation reaches
67.8°.Average individual well daily output liquid 65t, hydrodynamic face 445m after implementation, daily fluid production rate improves 206% before comparison is implemented, and increase day by day oil
37t, average individual well increase day by day oily 2.8t, build-up of fluid 444m.By the utility model, sand control is not only realized, and is stored up
Layer is effectively liberated, and improves oil well productivity.
The utility model is not only applicable in common sand control construction, and suitable for high shale content sensibility loose sand oil accumulation
High angle hole sand control is constructed, the utility model by mesh-supported and flow channels structure design, improve sand screen intensity and
Shale is discharged in production process, extends the sand control cycle.
The above is only the preferred embodiment of the present invention, non-to limit the scope of the claims of the utility model,
He uses the equivalence changes of the utility model patent spirit, should all belong to the scope of the claims of the utility model.
Claims (8)
1. a kind of high-strength hypertonic low-resistance sand screen including center base tube, opens up the liquid flow hole of radially perforation, center on the base tube of center
Resin filter sand body is arranged outside base tube, which is characterized in that embedded with reinforcement skeleton, the reinforcement skeleton bag in the resin filter sand body
It includes longitudinally uniformly distributed mesh-supported and indulges muscle and laterally uniformly distributed mesh-supported annular muscle, the mesh-supported indulges muscle and mesh-supported
The annular integrally welded formula structure of muscle.
2. the high-strength hypertonic low-resistance sand screen of one kind according to claim 1, which is characterized in that the filter sand body and center base
The annular space formed between pipe was used as oily passage.
3. the high-strength hypertonic low-resistance sand screen of one kind according to claim 2, which is characterized in that the mesh-supported is indulged on muscle
Lower both ends are all connected with respective anticollision support ring, and the anticollision support ring is welded on the base tube outer wall of center.
4. the high-strength hypertonic low-resistance sand screen of one kind according to claim 3, which is characterized in that the center base tube upper end connects
Connect connector, lower end connection lower contact.
5. a kind of high-strength hypertonic low-resistance sand screen open type assorted column jacket for being less than 30 ° of oil wells suitable for straight well or hole deviation, feature
Be, be sequentially connected from top to bottom screen pipe hanger, upper resin centralizer, it is upper back-off connector, high-strength hypertonic low-resistance sand screen, under
Resin centralizer, lower back-off connector, leather cup envelope；High-strength hypertonic low-resistance sand screen, including center base tube, footpath is opened up on the base tube of center
To the liquid flow hole of perforation, resin filter sand body is arranged outside the base tube of center, is embedded in the resin filter sand body and strengthens skeleton, it is described to add
Strong skeleton includes longitudinally uniformly distributed mesh-supported and indulges muscle and laterally uniformly distributed mesh-supported annular muscle, the mesh-supported indulge muscle with
The integrally welded formula structure of mesh-supported annular muscle, the annular space formed between the filter sand body and center base tube were used as oil logical
Road, the mesh-supported indulges muscle upper and lower ends and is all connected with respective anticollision support ring, during the anticollision support ring is welded on
On heart base tube outer wall, the center base tube upper end connects top connection, lower end connection lower contact.
6. a kind of high-strength hypertonic low-resistance sand screen for being less than 30 ° of oil wells suitable for straight well or hole deviation according to claim 5
Open type assorted column jacket, which is characterized in that the screen pipe hanger connects resin centralizer, the leather cup by the first oil pipe short circuit
End is sealed up by the lower back-off connector of the second oil pipe short circuit connection, leather cup envelope lower end connects the 3rd oil pipe short circuit.
7. a kind of high-strength hypertonic low-resistance sand screen enclosed assorted column jacket for being more than 30 ° of oil wells suitable for hole deviation, which is characterized in that from
Screen pipe hanger, upper resin centralizer, upper back-off connector, high-strength hypertonic low-resistance sand screen, lower resin is sequentially connected under to help
Positive device, lower back-off connector, silk plug；High-strength hypertonic low-resistance sand screen including center base tube, opens up radially perforation on the base tube of center
Liquid flow hole, is arranged resin filter sand body outside the base tube of center, embedded with strengthening skeleton, the reinforcement skeleton bag in the resin filter sand body
It includes longitudinally uniformly distributed mesh-supported and indulges muscle and laterally uniformly distributed mesh-supported annular muscle, the mesh-supported indulges muscle and mesh-supported
The annular integrally welded formula structure of muscle, the annular space formed between the filter sand body and center base tube were used as oily passage, the net
The vertical muscle upper and lower ends of shape support are all connected with respective anticollision support ring, and the anticollision support ring is welded on center base tube outer wall
On, the center base tube upper end connects top connection, lower end connection lower contact.
8. a kind of high-strength hypertonic low-resistance sand screen enclosed for being more than 30 ° of oil wells suitable for hole deviation according to claim 7 is matched somebody with somebody
Casing string, which is characterized in that the screen pipe hanger connects resin centralizer, the lower back-off connector by the first oil pipe short circuit
Silk plug is connected by the second oil pipe short circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720961090.XU CN207393170U (en) | 2017-08-02 | 2017-08-02 | A kind of high-strength hypertonic low-resistance sand screen and assorted column jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720961090.XU CN207393170U (en) | 2017-08-02 | 2017-08-02 | A kind of high-strength hypertonic low-resistance sand screen and assorted column jacket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207393170U true CN207393170U (en) | 2018-05-22 |
Family
ID=62418982
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720961090.XU Expired - Fee Related CN207393170U (en) | 2017-08-02 | 2017-08-02 | A kind of high-strength hypertonic low-resistance sand screen and assorted column jacket |
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| Country | Link |
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| CN (1) | CN207393170U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127800A (en) * | 2020-09-17 | 2020-12-25 | 西南石油大学 | Casing device for reducing casing shearing deformation and using method thereof |
| CN112664165A (en) * | 2019-10-16 | 2021-04-16 | 中国石油化工股份有限公司 | High-strength high-infiltration sand pipe suitable for high-inclination high-mud well and preparation method |
-
2017
- 2017-08-02 CN CN201720961090.XU patent/CN207393170U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664165A (en) * | 2019-10-16 | 2021-04-16 | 中国石油化工股份有限公司 | High-strength high-infiltration sand pipe suitable for high-inclination high-mud well and preparation method |
| CN112127800A (en) * | 2020-09-17 | 2020-12-25 | 西南石油大学 | Casing device for reducing casing shearing deformation and using method thereof |
| CN112127800B (en) * | 2020-09-17 | 2022-04-08 | 西南石油大学 | Casing device for reducing casing shearing deformation and using method thereof |
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Granted publication date: 20180522 Termination date: 20190802 |