CN108533235A - A kind of open hole well outer wrapping expansion filling anti-sand method - Google Patents
A kind of open hole well outer wrapping expansion filling anti-sand method Download PDFInfo
- Publication number
- CN108533235A CN108533235A CN201810179719.4A CN201810179719A CN108533235A CN 108533235 A CN108533235 A CN 108533235A CN 201810179719 A CN201810179719 A CN 201810179719A CN 108533235 A CN108533235 A CN 108533235A
- Authority
- CN
- China
- Prior art keywords
- sand
- screen casing
- outer envelope
- filling
- filling anti
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/082—Screens comprising porous materials, e.g. prepacked screens
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/108—Expandable screens or perforated liners
Abstract
The present invention relates to a kind of open hole well outer wrapping expansion filling anti-sand methods, pass through outer envelope highly expanded filling anti-sand screen insertion deficit space, spread outer envelope constantly flexes outward under the action of the high pressure of load fluid solid phase particles pushes pressure difference, until the outer wall of spread outer envelope is bonded with open hole wall, sand control is filled in realization；The anti-sand method of the present invention is formed with larger thickness, high filling compaction rate, high stability packwall in the anti-layer of sand near wellbore zone of target, achievees the effect that whole sand control intensity height, the sand control life length of sand block barrier.Oil/gas well moisture content can be effectively reduced while improving the whole sand control intensity of sand block barrier, achievees the purpose that extend the sand control life.
Description
Technical field
The present invention relates to a kind of open hole well outer wrapping expansion filling anti-sand methods, belong to oil and gas exploitation sand control skill
Art field.
Background technology
In China and conventional oil and natural gas reservoirs in the world, 70% or more is weak loose cementation sandstone reservoir,
Wherein it is no lack of the extremely weak quicksand of degree of consolidation and half quicksand reservoir.In addition to oil and gas reservoir, gas hydrates reservoir
It is also typical quicksand and half quicksand reservoir, this kind of quicksand and half quicksand reservoir formation sand production in recovery process are very serious.
It is so-called to shake out, refer to oil and gas loose sand reservoir and gas hydrates reservoir in recovery process, reservoir sand
Grain with formation fluid output to pit shaft or ground the phenomenon that, sand control (completion) is to solve the problems, such as the main path to shake out at present.Mesh
Preceding common sand-preventing process is to be filled in sand screen by way of flow pack or squeeze pack using the gravel of single particle size
Between pipe and mineshaft annulus, or it is filled in formation depletion area, for stopping reservoir sand.But this sand control method is for weak
Cementing quicksand, half quicksand reservoir, there are the following problems：
(1) conventional sand control technique carries out gravel filling, the gravel packing zone of formation between screen casing and casing (or oil reservoir)
Thickness is 20mm, and this girdle stops reservoir sand built on the sand, pole under conditions of quicksand and half quicksand reservoir largely shake out
It is easily broken into blocking, or even intrusion penetrates, pit shaft production sand and oil gas well production is caused significantly to decline；
(2) packwall that conventional gravel filling sand prevention method is formed in underground, since the factors such as construction technology limit, nothing
Method obtains higher filling compaction rate, is easily broken into, and sand block effect difference and yield decline, or even reservoir sand is caused directly to rush
The case where hitting sand control screen occurs, and the sand control life is very short.
(3) quicksand and half quicksand reservoir in recovery process due to largely shaking out, near wellbore zone be easy to be formed gravel layer without
The area in debt that method is filled up, can cause so in process of production gravel packing zone transported under the conditions of larger producing pressure differential
Overturning is moved, stable sand block barrier can not be formed in target reservoir, to cause sand control to fail.
Chinese patent literature CN105626002A discloses one kind and exempts to fill expandable screen pipe, including expands base tube, at this
Expand the expander on the outside of the filter sieve tube and filter sieve tube being arranged on the outside of base tube；Expander is included on the outside of filter sieve tube
Water-soluble polymer layer of the shape memory polymer layer and integral coating of cladding on the outside of shape memory polymer layer；It crosses
Screen pipe both ends are fixed on by the first locating ring on expansion base tube；Shape memory polymer layer both ends are solid by the second locating ring
It is scheduled on filter sieve tube；Expansion base tube both ends are respectively arranged with the expansion base tube extension for protruding from the first locating ring.The expansion
Screen casing realizes that expansion function, expansion function are intended merely to through expansion so that outer by the self-expanding of shape memory polymer layer
Wall and shaft in wall agree with, and are formed after avoiding the unexpansive screen casing formation screen casing-mineshaft annulus of tradition, future from being filled by reservoir sand low
Permeable formation influences oil gas well production, and the anti-layer of sand of this screen casing is thin, built on the sand, leakiness, the sand block with the unexpansive screen casing of tradition
Layer thickness is a magnitude.Its purpose is only deemed as realizing " nullring is empty ", but it is extremely difficult that processing is pulled out after its subsequent failure.
Therefore, it is necessary to research and develop a kind of new type of sand prevention method for quicksand and half quicksand reservoir, underground formed have compared with
The sand block barrier of big thickness, high filling compaction rate, high stability reaches and improves the whole sand control intensity of sand block barrier, extends
Sand control life.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of open hole well outer wrapping expansion filling anti-sand method.
The anti-sand method of the present invention can be formed with larger thickness, the high closely knit journey of filling in the anti-layer of sand near wellbore zone of target
Degree, high stability packwall can effectively reduce oil/gas well moisture content while improving the whole sand control intensity of sand block barrier, reach
To the purpose for extending the sand control life.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of open hole well outer wrapping expansion filling anti-sand method is prevented using outer envelope highly expanded filling anti-sand screen casing
Sand, including steps are as follows：
S1：Reaming hole processing is carried out in target reservoir
Space in debt has been determined before being enlarged space in debt or sand control construction to the mineshaft diameter reaming hole at target reservoir
Through reaching requirement, then without reaming hole processing；
S2：Outer envelope expansion construction, is formed simultaneously sand block filling layer
By outer envelope highly expanded filling anti-sand screen insertion underground, outer envelope highly expanded filling anti-sand screen casing is made to be aligned
Step S1 treated target reservoirs and in space in debt, casing pack takasago is sieved to outer envelope highly expanded filling anti-sand
The load fluid of ratio, the note sand hole stream for passing through outer envelope highly expanded filling anti-sand screen casing with the progress of stowing operation, load fluid
Go out slot matrix screen casing, with the outflow of load fluid, in the screen casing filling space of outer envelope highly expanded filling anti-sand screen casing
Solid phase particles are more and more, and the original space in screen casing filling space continues to fill after being filled up by solid phase particles, outside spread
Inclusion enclave constantly flexes outward under the action of the high pressure of solid phase particles pushes pressure difference, until the outer wall of spread outer envelope
It is bonded with open hole wall, realizes filling sand control.
According to currently preferred, described outer envelope highly expanded filling anti-sand screen casing, including slot matrix screen casing, cut
The outside of seam matrix screen casing is provided with spread outer envelope, and spread outer envelope is integrally annular in shape, and is sleeved on slot
The outside of matrix screen casing, two open ends of spread outer envelope are fixed on the both ends of slot matrix screen casing, outside spread
Radial straight joint is set on inclusion enclave, screen casing filling space is constituted between slot matrix screen casing and spread outer envelope.
The advantages of this design：The outer envelope highly expanded filling anti-sand screen casing of the present invention is used to stop the solid phase that filling enters
Particle will simultaneously be taken outside the smooth discharge pipe of sand flow body, be that spread restores original shape into the stretching exercise behind underground, not relate to
And material itself is plastically deformed, and 2~5 times when the outer envelope diameter after expansion can reach into well, is provided for a long time for filling layer
Stable larger filling space.
It is flexible metal link network, the flexible metal according to currently preferred, described spread outer envelope
Link network is the meshed metal link network of tool that tiny sheet metal is woven into, and mesh Pore throat size is solid phase in the load fluid filled
The 1/3~2/3 of grain diameter.
The spread outer envelope of the present invention, has the function of good deformation expansion, guarantees to stop pack gravel,
There is high permeability simultaneously, conducive to load fluid to stratum diverging flow, while there is very strong fastness, to larger thickness
Degree, height fill compaction rate, the sand block barrier of high stability plays firm effect.
According to currently preferred, spread outer envelope is looped around on slot matrix screen casing shrinking the when of being overlapped, quilt
Liquid flow impact extension after, superficial dilatation rate be shrink overlapping when 8-20 times, extension completion when superficial dilatation rate be into
2~5 times when well.
According to currently preferred, note sand hole is provided on the lateral wall of slot matrix screen casing, it is each to note sand hole peripheral hardware
It is equipped with the unidirectional valve that leaks, the valve that unidirectionally leaks is connect by arcuation screw with slot matrix screen casing, and the opening diameter for noting sand hole is to take
5-10 times of solid phase particles average diameter is filled in sand liquid.
It is further preferred that being arranged at intervals with the borders 3-6 note sand hole, each border up and down on slot matrix screen casing side wall
Upper uniform intervals are provided with 3-4 note sand hole.
According to currently preferred, tight swollen gasket is evenly arranged on two open end circumference of spread outer envelope
And fixing screws, two open ends of spread outer envelope are fixed on slot matrix screen casing by tight swollen gasket and fixing screws
On.
According to currently preferred, slot size is equal with reservoir formation fineness of sand intermediate value on slot matrix screen casing.
Matrix cutting seam sieve tube be mainly in gravel-packing process load fluid become a mandarin channel be provided, while being used to support solid phase
Grain packwall and spread outer envelope, slot matrix screen casing ensure tube body trafficability performance by slot, realize to filling
Solid particle and stoppage of formation sand.The unidirectional valve that leaks is the channel that load fluid passes through, and the valve that unidirectionally leaks opens wide load fluid, uses
Screen casing filling space is flowed into load fluid, forms stability packwall, oil/gas well is gone into operation, and the valve that unidirectionally leaks is rushed by produced liquid in oil well
It hits and closes, prevent the solid phase particles of filling from being discharged into pit shaft by the way that inflow hole is counter.
According to currently preferred, in step S2, the load fluid sand ratio of high sand ratio is 20-60%, solid phase in load fluid
Grain is common natural siliceous sand or sand control precipitation proppant particles, and solid phase particles size is the 4~5 of reservoir formation fineness of sand intermediate value
Times.
It is the artificial pottery that surface has immersion coating according to currently preferred, described sand control precipitation proppant particles
Grain, it is China Petroleum Dagang Oilfield group Limited Liability to have the logical oily effect that blocks water, sand control precipitation proppant particles of the invention
The CS-1 type coated sands of company's production, the natural siliceous sand with bonding capacity can consolidate under formation temperature conditions, and have
Block water logical oily function.
According to currently preferred, in step S2, it is 2-4MPa that high pressure, which pushes pressure difference,.
Load fluid has very strong hydrophily and itself can consolidate to form the higher entirety of intensity, therefore in sand control precipitation branch
It can be formed between outer envelope and slot base tube after support agent Particle consolidation with larger thickness, high filling compaction rate, height
The sand block packwall of stability blocks flow predominant pathway while improving whole sand control intensity, extending the sand control life, carries
High oil gas well production.
The weak cementing quicksand storage suitable for oil and gas exploitation according to currently preferred, of the invention anti-sand method
Quicksand reservoir caused by layer or half quicksand reservoir or gas hydrates Hydrate in Gas Wells.
The anti-sand method of the present invention is a kind of quicksand and half quicksand reservoir open hole well bottom expansion filling anti-sand method, is solved
Conventional gravel filling anti-sand technique filling thickness is thin, filling compaction rate is low, filling layer stability difference problem.By using outer
Inclusion enclave highly expanded filling anti-sand screen casing, as core sand control component, the anti-layer of sand near wellbore zone of target be formed with larger thickness,
Height filling compaction rate, high stability packwall reach the whole sand control intensity height of sand block barrier, the effect of sand control life length
Fruit.Oil/gas well moisture content can be effectively reduced while improving the whole sand control intensity of sand block barrier, it is effective to reach extension sand control
The purpose of phase.
Beneficial effects of the present invention are：
1, for anti-sand method of the invention compared with traditional sand-preventing process, the outside of slot matrix screen casing is provided with spread
Outer envelope can form independent sand block layer filling space in underground, and coordinating itself can consolidate sand control precipitation proppant particles
Filling layer, it is ensured that no matter how near wellbore formation changes, and can keep close with larger thickness, high filling around pit shaft always
The sand block packwall presence of real degree, high stability, sand controlling result long-time stable.
2, anti-sand method outer envelope highly expanded filling anti-sand screen casing of the invention is compared and conventional expandable screen expander
Product smaller disadvantage, can provide bigger by 2~5 times when the average diameter after the completion of outer envelope expansion can reach into well
Filling space.
3, the effect of anti-sand method slot matrix screen casing of the invention is to become a mandarin to carry for load fluid in gravel-packing process
For channel, while it being used to support solid phase particles packwall and outer envelope, does not undertake sand-proof function, therefore there is no tradition
The blocked risk of sand control screen in sand proof well.
4, anti-sand method of the invention is capable of providing high intensity sand control barrier, is resistant to the impact of high flow rate oil/gas well production fluid
And more round alternate scours of hot-producing high-temp steam, marine barreler and thermal production well filling vapor are equally applicable to sand control
The requirement of technique.Gas hydrates reservoir is also typical quicksand and half quicksand reservoir, and the present disclosure applies equally to natural gases
Sand control problem of shaking out appeared in hydrate recovery process.
5, anti-sand method outer envelope highly expanded filling anti-sand screen casing of the invention relies on the substantially expansion of outer envelope, and
It is filled by means of follow-up gravel and realizes that the underground of sand block medium is formed, thickness is larger, has the advantages that gravel filling sand prevention, and real
The high compact filling of existing gravel layer and stability.
Description of the drawings
Fig. 1 is open hole well outer envelope expansion filling anti-sand method schematic diagram, and wherein a is that the filling of outer envelope highly expanded is anti-
Structural schematic diagram when spread outer envelope is shunk under sand sieve pipe lower going-into-well；B is shape after the stretching, extension of spread outer envelope
At the structural schematic diagram of sand block packwall；
In figure, 1, upper interlayer, 2, shake out/anti-layer of sand position, 3, deficit of shaking out/reaming hole well section, 4, outer envelope highly expanded fills
Fill out sand control screen, 5, spread outer envelope (contraction), 6, lower interlayer, 7, spread outer envelope (stretching, extension), 8, sand block
Packwall；
Fig. 2 is the structural schematic diagram of spread outer envelope highly expanded filling anti-sand screen casing,
In figure, 9, slot matrix screen casing, 10, slot, 11, unidirectionally leak valve, 12, arcuation screw；
Fig. 3 is the unidirectional valve course of work schematic diagram that leaks of spread outer envelope highly expanded filling anti-sand screen casing,
Middle a is the unidirectional the valve opening state schematic diagram that leaks of stowing operation；B is the valve closing state signal that leaks when sand off produces
Figure.
In figure, 9, slot matrix screen casing, 11, unidirectionally leak valve, 12, arcuation screw, 13, solid phase particles；
Fig. 4 is that the spread outer envelope work of spread outer envelope highly expanded filling anti-sand screen casing and construction are shown
It is intended to；Wherein a is unidirectional leak valve, spread outer envelope original state schematic diagram；B is that the unidirectional valve that leaks opens, freely
Extend half open configuration schematic diagram of outer envelope；B is that the unidirectional valve that leaks is closed, the full open configuration of spread outer envelope is illustrated
Figure；
In figure, 5, spread outer envelope, 9, slot matrix screen casing, 11, unidirectionally leak valve.
Specific implementation mode
The present invention is further limited with embodiment with reference to the accompanying drawings of the specification, but not limited to this.
The sand control precipitation proppant particles with bonding capacity are limited purchased from China Petroleum Dagang Oilfield group in embodiment
The CS-1 type coated sands of responsible company's production.
Embodiment 1
A kind of open hole well outer wrapping expansion filling anti-sand method is prevented using outer envelope highly expanded filling anti-sand screen casing
Sand, the outer envelope highly expanded filling anti-sand screen casing, structure as shown in Fig. 2,
Including slot matrix screen casing 9, the outside of slot matrix screen casing 9 is provided with spread outer envelope 5, spread
Outer envelope 5 is whole annular in shape, and is sleeved on the outside of slot matrix screen casing 9, and two open ends of spread outer envelope 5 are fixed
Radial straight joint, slot matrix screen casing and spread are set at the both ends of slot matrix screen casing 9, on spread outer envelope 5
Screen casing filling space is constituted between outer envelope.
Spread outer envelope 5 is flexible metal link network, and flexible metal link network is the tool that tiny sheet metal is woven into
Meshed metal link network, mesh Pore throat size are 1/3 of solid phase particles grain size in the load fluid filled.Spread outer wrapping
Body has the function of good deformation expansion, guarantees to stop pack gravel, while having high permeability, conducive to sand is taken
Liquid to stratum diverging flow, while there is very strong fastness, to larger thickness, high filling compaction rate, high stability
Sand block barrier plays firm effect.
Spread outer envelope 5 is looped around when shrinking overlapping on slot matrix screen casing 9, after being extended by liquid flow impact,
10 times when its superficial dilatation rate is contraction overlapping, 3 times when superficial dilatation rate is into well when extending completion.
It is arranged at intervals with 4 borders note sand hole up and down on slot matrix screen casing side wall 9, uniform intervals are arranged on each border
There are 4 note sand holes, each note to be provided with the unidirectional valve 11 that leaks outside sand hole, the valve 11 that unidirectionally leaks passes through arcuation screw 12 and slot base
Body screen casing connects, and the opening diameter for noting sand hole is 5 times that solid phase particles average diameter is filled in load fluid.In spread outsourcing
It wraps up in and is evenly arranged with tight swollen gasket and fixing screws, two open ends of spread outer envelope on two open end circumference of body 5
It is fixed on slot matrix screen casing by tight swollen gasket and fixing screws.Slot size and reservoir formation sand on slot matrix screen casing
Median grain diameter is equal.
Matrix cutting seam sieve tube be mainly in gravel-packing process load fluid become a mandarin channel be provided, while being used to support solid phase
Grain packwall and spread outer envelope, slot matrix screen casing ensure tube body trafficability performance by slot, realize to filling
Solid particle and stoppage of formation sand.The unidirectional valve that leaks is the channel that load fluid passes through, and the valve that unidirectionally leaks opens wide load fluid, uses
Screen casing filling space is flowed into load fluid, forms stability packwall, oil/gas well is gone into operation, and the valve that unidirectionally leaks is rushed by produced liquid in oil well
It hits and closes, prevent the solid phase particles of filling from being discharged into pit shaft by the way that inflow hole is counter.
Anti-sand method, as shown in Fig. 1, Fig. 3, Fig. 4, steps are as follows：
S1：Reaming hole processing is carried out in target reservoir
Space in debt has been determined before being enlarged space in debt or sand control construction to the mineshaft diameter reaming hole at target reservoir
Through reaching requirement, then without reaming hole processing；
S2：Outer envelope expansion construction, is formed simultaneously sand block filling layer
By outer envelope highly expanded filling anti-sand screen insertion underground, outer envelope highly expanded filling anti-sand screen casing is made to be aligned
Step S1 treated target reservoirs and in space 3 in debt, the back-up sand into outer envelope highly expanded filling anti-sand screen casing
Than the load fluid for 40%, the note for passing through outer envelope highly expanded filling anti-sand screen casing with the progress of stowing operation, load fluid
Sand hole flows out slot matrix screen casing, sees in Fig. 3 that a schemes, with the outflow of load fluid, outer envelope highly expanded filling anti-sand screen casing
Solid phase particles 13 in screen casing filling space are more and more, the original space in screen casing filling space continue after being filled up by solid phase particles into
Row filling, spread outer envelope constantly flexes outward under the action of the high pressure of solid phase particles pushes pressure difference, until freedom
The outer wall of extension outer envelope be bonded with open hole wall, and sand control is filled in realization, sees b in Fig. 1, b in Fig. 3.
Solid phase particles sand control precipitation proppant particles in load fluid, solid phase particles size are reservoir formation fineness of sand intermediate value
4 times；In step S2, it is 2MPa that high pressure, which pushes pressure difference,.
The sand controlling result of the present invention see the table below 1：
Table 1
Embodiment 2
A kind of open hole well outer wrapping expansion filling anti-sand method, described in embodiment 1, the difference is that：
Outer envelope highly expanded filling anti-sand screen casing, spread outer envelope 5 are flexible metal link network, flexible metal chain
Net is the meshed metal link network of tool that tiny sheet metal is woven into, and mesh Pore throat size is solid phase in the load fluid filled
The 2/3 of grain grain size.
Spread outer envelope 5 is looped around when shrinking overlapping on slot matrix screen casing 9, after being extended by liquid flow impact,
20 times when its superficial dilatation rate is contraction overlapping, 5 times when superficial dilatation rate is into well when extending completion.
It is arranged at intervals with 3 borders note sand hole up and down on slot matrix screen casing side wall 9, uniform intervals are arranged on each border
There are 3 note sand holes, each note to be provided with the unidirectional valve 11 that leaks outside sand hole, the valve 11 that unidirectionally leaks passes through arcuation screw 12 and slot base
Body screen casing connects, and the opening diameter for noting sand hole is 8 times that solid phase particles average diameter is filled in load fluid.
In step S2, into outer envelope highly expanded filling anti-sand screen casing, back-up sand is than the load fluid for 60%.
Claims (10)
1. a kind of open hole well outer wrapping expansion filling anti-sand method is prevented using outer envelope highly expanded filling anti-sand screen casing
Sand, including steps are as follows：
S1：Reaming hole processing is carried out in target reservoir
Mineshaft diameter reaming hole at target reservoir is enlarged before space in debt or sand control construction and determines that space in debt has reached
To requirement, then without reaming hole processing；
S2：Outer envelope expansion construction, is formed simultaneously sand block filling layer
By outer envelope highly expanded filling anti-sand screen insertion underground, make outer envelope highly expanded filling anti-sand screen casing alignment procedures
S1 treated target reservoirs and in space in debt, casing pack high sand ratio is sieved to outer envelope highly expanded filling anti-sand
Load fluid, with the progress of stowing operation, load fluid is cut by the note sand hole outflow of outer envelope highly expanded filling anti-sand screen casing
Matrix screen casing is stitched, with the outflow of load fluid, the solid phase in the screen casing filling space of outer envelope highly expanded filling anti-sand screen casing
Particle is more and more, and the original space in screen casing filling space continues to fill after being filled up by solid phase particles, spread outer wrapping
Body solid phase particles high pressure push pressure difference under the action of constantly flex outward, until spread outer envelope outer wall with it is naked
Eye borehole wall fitting, realizes filling sand control.
2. open hole well outer wrapping expansion filling anti-sand method according to claim 1, which is characterized in that the outer wrapping
Body highly expanded filling anti-sand screen casing, including slot matrix screen casing, the outside of slot matrix screen casing are provided with spread outer wrapping
Body, spread outer envelope is integrally annular in shape, and is sleeved on the outside of slot matrix screen casing, and the two of spread outer envelope opens
Mouthful end is fixed on the both ends of slot matrix screen casing, the radial straight joint of setting on spread outer envelope, slot matrix screen casing with from
By constituting screen casing filling space between extension outer envelope.
3. open hole well outer wrapping expansion filling anti-sand method according to claim 2, which is characterized in that described freely expands
Exhibition outer envelope is flexible metal link network, and the flexible metal link network is the meshed gold of tool that tiny sheet metal is woven into
Belong to link network, mesh Pore throat size is 1/3~2/3 of solid phase particles grain size in the load fluid filled.
4. open hole well outer wrapping expansion filling anti-sand method according to claim 2, which is characterized in that spread outsourcing
It wraps up in body to be looped around on slot matrix screen casing when shrinking overlapping, after being extended by liquid flow impact, superficial dilatation rate is to shrink weight
8-20 times when folded, 2~5 times when superficial dilatation rate is into well when extending completion.
5. open hole well outer wrapping expansion filling anti-sand method according to claim 2, which is characterized in that sieved in slot matrix
Note sand hole is provided on the lateral wall of pipe, each note is provided with the unidirectional valve that leaks outside sand hole, the valve that unidirectionally leaks passes through arcuation screw
It is connect with slot matrix screen casing, the opening diameter for noting sand hole is 5-10 times that solid phase particles average diameter is filled in load fluid.
6. open hole well outer wrapping expansion filling anti-sand method according to claim 5, which is characterized in that sieved in slot matrix
The borders 3-6 note sand hole is arranged at intervals on pipe side wall up and down, uniform intervals are provided with 3-4 note sand hole on each border.
7. open hole well outer wrapping expansion filling anti-sand method according to claim 2, which is characterized in that outside spread
Tight swollen gasket and fixing screws, two open ends of spread outer envelope are evenly arranged on two open end circumference of inclusion enclave
It is fixed on slot matrix screen casing by tight swollen gasket and fixing screws.
8. open hole well outer wrapping expansion filling anti-sand method according to claim 2, which is characterized in that slot matrix screen casing
Upper slot size is equal with reservoir formation fineness of sand intermediate value.
9. open hole well outer wrapping expansion filling anti-sand method according to claim 1, which is characterized in that high in step S2
Sand than load fluid sand ratio be 20-60%, solid phase particles are common natural siliceous sand or sand control precipitation proppant in load fluid
Grain, solid phase particles size are 4~5 times of reservoir formation fineness of sand intermediate value.
10. open hole well outer wrapping expansion filling anti-sand method according to claim 1, which is characterized in that high in step S2
It is 2-4MPa that pressure, which pushes pressure difference,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179719.4A CN108533235B (en) | 2018-03-05 | 2018-03-05 | Expansion filling anti-sand method is wrapped up outside a kind of open hole well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179719.4A CN108533235B (en) | 2018-03-05 | 2018-03-05 | Expansion filling anti-sand method is wrapped up outside a kind of open hole well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108533235A true CN108533235A (en) | 2018-09-14 |
| CN108533235B CN108533235B (en) | 2019-06-18 |
Family
ID=63485533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810179719.4A Active CN108533235B (en) | 2018-03-05 | 2018-03-05 | Expansion filling anti-sand method is wrapped up outside a kind of open hole well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108533235B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145281A (en) * | 2019-07-01 | 2019-08-20 | 广州海洋地质调查局 | A kind of NEW TYPE OF COMPOSITE sand control structure |
| CN110173230A (en) * | 2019-06-06 | 2019-08-27 | 安东柏林石油科技（北京）有限公司 | Prevent artificial borehole wall, forming method and the completion structure of shale layer mud output or channelling |
| CN113958294A (en) * | 2021-08-31 | 2022-01-21 | 李若桐 | Laminated selective overcurrent device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067370A (en) * | 2007-04-23 | 2007-11-07 | 中国石油大学(华东) | Adaptive filling expansion scree tube and expanding method thereof |
| WO2010008957A2 (en) * | 2008-07-16 | 2010-01-21 | Baker Hughes Incorporated | Bead pack brazing with energetics |
| CN205577958U (en) * | 2016-03-04 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | Novel from expansion screen pipe |
| CN206071549U (en) * | 2016-09-28 | 2017-04-05 | 东营市瑞丰石油技术发展有限责任公司 | Wriggling self-cleaning screen pipe |
| CN107575187A (en) * | 2017-10-09 | 2018-01-12 | 中国石油大学(华东) | A kind of high saturation filling control water anti-sand method of the more slugs of Extra-fine sand reservoir |
-
2018
- 2018-03-05 CN CN201810179719.4A patent/CN108533235B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067370A (en) * | 2007-04-23 | 2007-11-07 | 中国石油大学(华东) | Adaptive filling expansion scree tube and expanding method thereof |
| WO2010008957A2 (en) * | 2008-07-16 | 2010-01-21 | Baker Hughes Incorporated | Bead pack brazing with energetics |
| CN205577958U (en) * | 2016-03-04 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | Novel from expansion screen pipe |
| CN206071549U (en) * | 2016-09-28 | 2017-04-05 | 东营市瑞丰石油技术发展有限责任公司 | Wriggling self-cleaning screen pipe |
| CN107575187A (en) * | 2017-10-09 | 2018-01-12 | 中国石油大学(华东) | A kind of high saturation filling control water anti-sand method of the more slugs of Extra-fine sand reservoir |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173230A (en) * | 2019-06-06 | 2019-08-27 | 安东柏林石油科技（北京）有限公司 | Prevent artificial borehole wall, forming method and the completion structure of shale layer mud output or channelling |
| WO2020244303A1 (en) * | 2019-06-06 | 2020-12-10 | 安东柏林石油科技（北京）有限公司 | Artificial borehole wall for preventing mudstone layer mud from being produced or channeling, forming method and well completion structure |
| CN110145281A (en) * | 2019-07-01 | 2019-08-20 | 广州海洋地质调查局 | A kind of NEW TYPE OF COMPOSITE sand control structure |
| CN113958294A (en) * | 2021-08-31 | 2022-01-21 | 李若桐 | Laminated selective overcurrent device |
| CN113958294B (en) * | 2021-08-31 | 2023-07-25 | 李若桐 | Lamination type selective overcurrent device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108533235B (en) | 2019-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107620582B (en) | Bilayer sleeve sand control completion technique and double-layer anti-sand completion tubular column | |
| CN103688015B (en) | For multiple zone well completion, recover the oil and the wellbore apparatus that injects and method | |
| CN108533235B (en) | Expansion filling anti-sand method is wrapped up outside a kind of open hole well | |
| CN109653722A (en) | A kind of mash gas extraction device and method of coal seam hydraulic slotted liner technique and the linkage of lower screen casing | |
| US8789612B2 (en) | Open-hole packer for alternate path gravel packing, and method for completing an open-hole wellbore | |
| WO2017028322A1 (en) | Horizontal well staged fracturing oil production method by injection and production in same well | |
| US9816361B2 (en) | Downhole sand control assembly with flow control, and method for completing a wellbore | |
| CN206016778U (en) | A kind of gravel packing sand retention device | |
| CN207568578U (en) | Flood suction tubing string | |
| WO2020155861A1 (en) | Method for filling oil-gas well of fractured oil-gas reservoir with isolation particles to reduce water and increase oil production | |
| NO346656B1 (en) | Segmented method and filter string for flow regulation in an oil-gas well structure | |
| CN210685949U (en) | Well completion structure for injection and production in same well | |
| CN104763389A (en) | High-rate injection screen assembly with checkable ports | |
| CN110242264B (en) | Packing method and well completion structure for same-well injection and production | |
| WO2020244303A1 (en) | Artificial borehole wall for preventing mudstone layer mud from being produced or channeling, forming method and well completion structure | |
| CN105649625A (en) | High-low-pressure subarea fracturing anatonosis type coal seam water injection method | |
| CN207177750U (en) | Integrated pipe column | |
| CN113175316A (en) | New method for plugging underground or underground old crack | |
| CN101338660A (en) | Horizontal production-injection well completion structure possessing flow control function | |
| CN209339928U (en) | A kind of mash gas extraction device of coal seam hydraulic slotted liner technique and the linkage of lower screen casing | |
| CN106677747A (en) | Filling type water control screen pipe used for sand prevention of horizontal well completion | |
| WO2022183898A1 (en) | Method for operating water injection well, and water injection well | |
| NO20101106A1 (en) | Methods and devices for storing carbon dioxide in underground geological formations | |
| CN215672154U (en) | Water injection well | |
| CN109138932A (en) | A kind of chemical packer segmentation control water completion method of straight well filling combination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230712 Address after: 266580 No. 66 Changjiang West Road, Huangdao District, Qingdao, Shandong. Patentee after: CHINA University OF PETROLEUM (EAST CHINA) Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: DAGANG OILFIELD GROUP Co.,Ltd. Address before: 266580 No. 66 Changjiang West Road, Huangdao District, Qingdao, Shandong. Patentee before: CHINA University OF PETROLEUM (EAST CHINA) Patentee before: DAGANG OILFIELD GROUP Co.,Ltd. |