CN205577959U - But exempt from to fill expansion screen pipe - Google Patents
But exempt from to fill expansion screen pipe Download PDFInfo
- Publication number
- CN205577959U CN205577959U CN201620168187.0U CN201620168187U CN205577959U CN 205577959 U CN205577959 U CN 205577959U CN 201620168187 U CN201620168187 U CN 201620168187U CN 205577959 U CN205577959 U CN 205577959U
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- CN
- China
- Prior art keywords
- screen pipe
- inflation
- shape memory
- base tube
- polymer layer
- 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.)
- Expired - Fee Related
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Abstract
The utility creatively provides a but exempt from to fill expansion screen pipe, including the inflation parent tube, at the filtration screen pipe of this inflation parent tube outside setting and the inflation body of filter sieve outside of tubes side, the inflation body includes on the wrap -around shape memory polymer layer of filter sieve outside of tubes side to and the water soluble polymers layer of whole cladding in the shape memory polymer layer outside, it fixes on the inflation parent tube through first holding ring to filter the screen pipe both ends, shape memory polymer layer both ends are passed through the second holding ring and are fixed on filtering the screen pipe, inflation parent tube both ends are provided with outstanding inflation parent tube extension section in first holding ring respectively. The utility model discloses creating and going into the oil well down, need not the gravel and fill, avoid filling the unreal sand control effect that influence, the while has effectively reduced time number of times of income tubular column, has reduced the operating cost. After the volume expansion of expanding, can realize shape memory polymer cavernosum and the double -deck sand control that filters that filters the screen pipe, just can effectively support the wall of a well behind the inflation and prevent the wellbore collapse that shakes out.
Description
Technical field
The invention belongs to oil-gas drilling completion and sand control technical field, especially relates to one and exempts from
Fill expandable screen pipe.
Background technology
During oil reservoir development, oil well is widely present phenomenon of shaking out, shake out can affect oil well normally produce,
Increasing production cost, reduce yield and pollute environment, sand control is extremely important for oil reservoir development.Now
Using more sand control technique to include chemical sand control and mechanical sand control, wherein mechanical sand control is the most reliable
Sand control means.Screen sand control is the most widely used mechanical sand control technology, in order to improve sand controlling result,
It is typically necessary and carries out gravel pack.Although gravel pack can improve sand controlling result, but operating procedure is multiple
Miscellaneous and relatively costly, near wellbore formation cannot be changed simultaneously and continue and the situation of increase of shaking out along with exploiting.Pin
To this situation, developed expandable screen later and make screen casing outer wall be close to the borehole wall, increased latus rectum size,
Reduce the space between screen casing and the borehole wall simultaneously, improve situation about increasing of shaking out；But due to expandable screen
Cannot be close to the borehole wall completely, and expand ethmoid canal,posterior pore size filter and become and cause greatly it cannot effective sand control.
Summary of the invention
In view of this, the invention is directed to one and exempts to fill expandable screen pipe, solves current oil gas
The problems such as well completion practice is complex and high cost, sand controlling result is poor, it is achieved the completion and sand control of all kinds of oil wells is made
Industry simplifies, improves sand controlling result, the purpose of reduction cost.
For reaching above-mentioned purpose, the technical scheme of the invention is achieved in that
One is exempted to fill expandable screen pipe, including expanding base tube, the filtration arranged outside this expansion base tube
Expander outside screen casing and filter sieve tube；Described expander is included in outside described filter sieve tube and wraps
The shape memory polymer layer covered, and water-soluble outside described shape memory polymer layer of integral coating
Property polymeric layer；Described filter sieve tube two ends are fixed on described expansion base tube by the first locating ring；Institute
State shape memory polymer layer two ends to be fixed on described filter sieve tube by the second locating ring；Described expansion
Base tube two ends are respectively arranged with the expansion base tube extension protruding from described first locating ring.
Further, described filter sieve tube is double-decker, including wire-wrapped screen and the netted screen casing in outside thereof.
Further, described netted screen casing two ends are provided with to wrap up the rib of described wire-wrapped screen.
Further, described expander two ends are respectively formed the leading end that outer circumference surface is the conical surface.
Further, described expansion base tube extension is removably attachable on described expansion base tube.
Further, described expansion base tube extension is threaded on described expansion base tube.
Relative to prior art, the filling expandable screen pipe of exempting from described in the invention has the advantage that
Enter under the invention in oil well, it is not necessary to gravel pack, it is to avoid filling unreal affects sand controlling result,
Effectively reduce the number of times of running string simultaneously, decrease operating cost.After expander expands, permissible
Can be effective after realizing the double medium filtration sand control of shape-memory polymer spongy body and filter sieve tube, and expansion
Support the borehole wall and prevent cave-in of shaking out.
Accompanying drawing explanation
The accompanying drawing of the part constituting the invention is used for providing being further appreciated by the invention,
The schematic description and description of the invention is used for explaining the invention, is not intended that this
The improper restriction of bright creation.In the accompanying drawings:
Fig. 1 is the structural representation before expanding in the invention is lowered into oil well；
Fig. 2 is the structural representation after expanding in the invention is lowered into oil well；
Fig. 3 is the structural representation of filter sieve tube in the invention；
Fig. 4 is the sectional view of filter sieve tube in the invention.
Description of reference numerals:
1-expands base tube；2-filter sieve tube；3-expander；4-shape memory polymer layer；5-water solublity
Polymeric layer；6-the first locating ring；7-the second locating ring；8-expands base tube extension；9-wire-wrapped screen；
The netted screen casing of 10-；11-rib；12-leading end；13-annular space；14-stratum；15-oil reservoir；16-sieves
Pipe orifice.
Detailed description of the invention
It should be noted that in the case of not conflicting, in embodiment in the invention and embodiment
Feature can be mutually combined.
In the description of the invention, it is to be understood that term " " center ", " longitudinally ", " horizontal stroke
To ", " on ", D score, "front", "rear", "left", "right", " vertically ", " water
Flat ", the orientation that indicates of " top ", " end ", " interior ", " outward " etc. or position relationship be based on attached
Orientation shown in figure or position relationship, be for only for ease of description the invention and simplify description, and not
Be instruction or the hint device of indication or element must have specific orientation, with specific azimuth configuration and
Operation, therefore it is not intended that restriction to the invention.Additionally, term " first ", " second "
Etc. being only used for describing purpose, and it is not intended that instruction or hint relative importance or implicit indicate indication
The quantity of the technical characteristic shown.Thus, the feature defining " first ", " second " etc. can be expressed
Or implicitly include one or more this feature.In the description of the invention, unless otherwise
Illustrating, " multiple " are meant that two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited,
Term " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing,
Can also be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；
Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the company of two element internals
Logical.For the ordinary skill in the art, can understand that above-mentioned term is at this by concrete condition
Concrete meaning in innovation and creation.
Describe the invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
One exempts to fill expandable screen pipe, as shown in Figures 1 to 4, including expanding base tube 1, in this expansion
Expander 3 outside the filter sieve tube 2 arranged outside base tube 1 and filter sieve tube 2；Described expansion
Body is included in the shape memory polymer layer 4 of cladding outside described filter sieve tube 2, and integral coating exists
Water-soluble polymer layer 5 outside described shape memory polymer layer 4；Described filter sieve tube 2 two ends lead to
Cross the first locating ring 6 to be fixed on described expansion base tube 1；Described shape memory polymer layer 4 two ends lead to
Cross the second locating ring 7 to be fixed on described filter sieve tube 2；Described expansion base tube 1 two ends are respectively arranged with
Protrude from the expansion base tube extension 8 of described first locating ring 6.It should be noted that expand base tube it is
Hollow structure, it is internal is screen casing endoporus 16, and its two ends connect expansion base tube extension, expands base tube and prolongs
Long section 8 is used for connecting other auxiliary equipments.For preventing expansion process filter sieve tube from axial displacement occurring, because of
This arranges the first locating ring at filter sieve tube along axis two ends.For preventing expansion process shape-memory polymer
There is axial displacement in layer, shape memory polymer layer is equipped with the second locating ring along axis two ends.
The axial location of the second locating ring 7 is in the inner side of the first locating ring 6, at the i.e. second locating ring 7
In the first locating ring 6 towards the side of described expander 3 medium position.Outside shape memory polymer layer 4
Portion covers water-soluble polymer layer 5, and water-soluble polymer layer 5 enters under cost exempts from filling expandable screen pipe
Gradually dissolve behind precalculated position, expose shape memory polymer layer 4.
Shape memory polymer layer 4 contacts after the sufficient time with liquid at a set temperature, is gradually expanded to
Fill up and originally exempt to fill the annular space 13 between expandable screen pipe and oil well, form spongy hard filter course.Swollen
Swollen base tube 1 realizes caliber by expanse device and expands, it is emphasized that, caliber process of expansion must be
Meet before water soluble polymer 5 dissolves and complete.Use bulged tube technology, increase latus rectum size；Once real
The sand control of existing multiple payzones processes.
Wherein, described filter sieve tube 2 is double-decker, including wire-wrapped screen 9 and the mesh screen in outside thereof
Pipe 10.Described netted screen casing 10 two ends are provided with to wrap up the rib 11 of described wire-wrapped screen 9.Pass through
Rib 11, so, is equivalent to firm being embedded in described netted screen casing 10, really of wire-wrapped screen 9
The double-decker protecting filter sieve tube 2 is reliable and stable.
For prevent from originally exempting from filling expandable screen pipe arrive specify position before shape memory polymer layer 4 in advance
Meet water expanded by heating, cause to enter to meet card under instrument, outside shape memory polymer layer 4, cover water solublity
Polymeric layer 5, meets water and can gradually dissolve the shape memory polymer layer 4 of exposing inside thereof parcel.
Wherein, described expander 3 two ends are respectively formed the leading end 12 that outer circumference surface is the conical surface, very convenient
Originally exempt to fill expandable screen pipe to be lowered in well.
Wherein, described expansion base tube extension 8 is removably attachable on described expansion base tube 1, the two
Generally can use threaded.So, very convenient expansion base tube extension 8 and the company expanding base tube 1
Connect, different length or the expansion base tube extension 8 of different size can be selected according to the demand of operating mode,
Corresponding auxiliary equipment can be connected according to actual needs.
Originally exempt to fill expandable screen pipe caliber before going into the well less, it is possible to enter down.Instantly enter
Postpone to specific bit, it is common that at the oil reservoir 15 being distributed in transferring to stratum 14, use expanse device
Make the expansion base tube 9 caliber expansion of inside, affected by dilating effect power, wire-wrapped screen 9 and netted screen casing
10 calibers are expanded therewith.Shape memory polymer layer 4 is exposed after water-soluble polymer layer 5 is gradually dissolved,
Shape memory polymer layer 4 meets water expanded by heating, and its thickness dramatically increases and keeps expanding base tube 1 to be expanded
Rear caliber does not shrinks.
Enter under the invention in oil well, it is not necessary to gravel pack, it is to avoid filling unreal affects sand controlling result,
Effectively reduce the number of times of running string simultaneously, decrease operating cost.After expander 2 expands, can
To realize the double medium filtration sand control of shape-memory polymer spongy body and filter sieve tube, and can have after expansion
Effect supports the borehole wall and prevents cave-in of shaking out.
The foregoing is only the preferred embodiment of the invention, not in order to limit present invention wound
Make, within all spirit in the invention and principle, any modification, equivalent substitution and improvement made
Deng, within should be included in the protection domain of the invention.
Claims (6)
1. exempt to fill expandable screen pipe for one kind, it is characterised in that: include expanding base tube, at this expansion base
Expander outside the filter sieve tube arranged outside pipe and filter sieve tube；Described expander is included in institute
State the shape memory polymer layer of cladding outside filter sieve tube, and integral coating is gathered at described shape memory
Water-soluble polymer layer outside compound layer；Described filter sieve tube two ends are fixed on institute by the first locating ring
State on expansion base tube；Described shape memory polymer layer two ends are fixed on described filtration by the second locating ring
On screen casing；Described expansion base tube two ends are respectively arranged with and protrude from the expansion base tube of described first locating ring and prolong
Long section.
One the most according to claim 1 is exempted to fill expandable screen pipe, it is characterised in that: described
Filter sieve tube is double-decker, including wire-wrapped screen and the netted screen casing in outside thereof.
One the most according to claim 2 is exempted to fill expandable screen pipe, it is characterised in that: described
Netted screen casing two ends are provided with to wrap up the rib of described wire-wrapped screen.
One the most according to claim 1 is exempted to fill expandable screen pipe, it is characterised in that: described
Expander two ends are respectively formed the leading end that outer circumference surface is the conical surface.
One the most according to claim 1 is exempted to fill expandable screen pipe, it is characterised in that: described
Expand base tube extension to be removably attachable on described expansion base tube.
The most according to claim 1 or 5, one is exempted to fill expandable screen pipe, it is characterised in that:
Described expansion base tube extension is threaded on described expansion base tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168187.0U CN205577959U (en) | 2016-03-04 | 2016-03-04 | But exempt from to fill expansion screen pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168187.0U CN205577959U (en) | 2016-03-04 | 2016-03-04 | But exempt from to fill expansion screen pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205577959U true CN205577959U (en) | 2016-09-14 |
Family
ID=56871696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620168187.0U Expired - Fee Related CN205577959U (en) | 2016-03-04 | 2016-03-04 | But exempt from to fill expansion screen pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205577959U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626002A (en) * | 2016-03-04 | 2016-06-01 | 中国石油集团渤海钻探工程有限公司 | Filling-free expandable sieve tube |
| CN107143315A (en) * | 2017-07-06 | 2017-09-08 | 成都川通达科技有限公司 | A kind of flow control sand control installation |
| 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 |
-
2016
- 2016-03-04 CN CN201620168187.0U patent/CN205577959U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626002A (en) * | 2016-03-04 | 2016-06-01 | 中国石油集团渤海钻探工程有限公司 | Filling-free expandable sieve tube |
| CN107143315A (en) * | 2017-07-06 | 2017-09-08 | 成都川通达科技有限公司 | A kind of flow control sand control installation |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210914 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: No.106 Huanghai Road, Binhai New Economic and Technological Development Zone, Tianjin 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |