CN201588617U - Radial-inserted radial current-limit type restrictor and balance sieve tube with the restrictor - Google Patents
Radial-inserted radial current-limit type restrictor and balance sieve tube with the restrictor Download PDFInfo
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- CN201588617U CN201588617U CN2009202783462U CN200920278346U CN201588617U CN 201588617 U CN201588617 U CN 201588617U CN 2009202783462 U CN2009202783462 U CN 2009202783462U CN 200920278346 U CN200920278346 U CN 200920278346U CN 201588617 U CN201588617 U CN 201588617U
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- restriction choke
- flow passage
- passage part
- restrictor
- radially
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Abstract
The utility model provides a radial-inserted radial current-limit type restrictor and balance sieve tube with the restrictor. The restrictor is used for controlling the fluid flow of the fluid channel and comprises a restrictor main body and a restrictor support disk and an overflow piece is radially in the assembly hole of the overflow piece on the restrictor main body and the overflow piece comprises an imperforated type and a perorated type. When the overflow piece is of imperforated type, the overflow holes of different numbers are opened on the overflow piece. The balance sieve tube comprises a fluid channel, namely a base tube, a composite filter sleeve assembly and the radial-inserted radial current-limit type restrictor, wherein the composite filter sleeve assembly and the restrictor are coaxially sleeved on the outer part of the base tube and the composite filter sleeve assembly comprises an inner protection sleeve, a multi-layer filter screen and an outer protection sleeve. The overflow holes on the base tube very easily change between the open state, the closed state, the big state and the small state by the reasonable match of the overflow pieces of different perforation numbers, thereby realizing current limit.
Description
Technical field
The utility model belongs to flow equilibrium device technique field, relates to a kind of restriction choke and contains the balanced screen casing of this restriction choke, particularly relates to a kind ofly radially inserting radially the current-limiting type restriction choke and containing the balanced screen casing of this restriction choke.
Background technology
In oil, gas exploitation course, balanced screen casing filters as sand control and the downhole production device that prolongs the balanced pressure drop of net horizontal section is regulated in throttling, it can suppress Di Shui and the limit water water ridge unbalanced phenomenon of moving, thereby realize the production capacity of the whole horizontal segment of performance, the purpose that prolongs the life-span of horizontal well, finally make oil well reach maximum economic benefit.
Have problems in the horizontal wells process, particularly the subject matter that exists in horizontal well limit, end aqueous hydrocarbon Tibetan development process is aspect two: one is limit water, bottom water coning problem, and another is an oil-gas reservoir production capacity problem.
Disclose a kind of balance-type screen casing in the prior art, this balance-type screen casing is made up of restriction choke, cartridge filter and center parent tube.The flow control device structure is made up of the screw type circulation groove of a uniqueness in the above-mentioned restriction choke, and it is used to shunt pressure distribution along whole net horizontal section as control element.Although this balance-type screen casing when guaranteeing to regulate the output flow, has also improved the reliability of oil well production, the technological deficiency of its existence is: 1, the screw type runner causes obstruction easily; 2, must obtain well data in advance and design runner, thereby form fixing form, be unfavorable for the adjusting at oil well production scene; 3, product structure complexity is unfavorable for processing.
Summary of the invention
The purpose of this utility model is to provide a kind of balanced screen casing that radially inserts current-limiting type restriction choke radially and contain this restriction choke, flow passage part in this restriction choke is rational in infrastructure, be convenient to processing, when constructing at the scene by simple operations, the just size that can very regulate inflow-rate of water turbine like a cork; Filtration fraction in this equilibrium screen casing has adopted monolithic construction, its filter screen is rolled into cylindrical shape by flaky material and with two edges partial stack and forming in addition, need not welding, can not cause any damage to filter screen, therefore can satisfy the actual needs of different exploitation of oil-gas field, be beneficial to overcome existing above-mentioned defective in the prior art.
To achieve these goals, the utility model provides a kind of radially current-limiting type restriction choke that radially inserts, it is used to control the fluid flow of fluid passage, this restriction choke comprises restriction choke body and the first throttle device supporting disk and the second restriction choke supporting disk, and this first, second restriction choke supporting disk is arranged at the two ends of restriction choke body respectively; Wherein this second restriction choke supporting disk is provided with the chute excessively that is used to import fluid, is formed with the restriction choke annular space in this restriction choke body, this restriction choke annular space and chute conducting excessively; And also be provided with a plurality of flow passage part pilot holes on this restriction choke body, offer first flowing hole on the tube wall corresponding to the fluid passage of flow passage part pilot hole position, be equipped with flow passage part in each flow passage part pilot hole; Flow passage part inserts in the flow passage part pilot hole and by fixture and fixes, and insert in first flowing hole of the fluid passage for the treatment of current limliting at the top of flow passage part, and flow passage part comprises atresia and porose two types; When flow passage part was porose type, this flow passage part was provided with and corresponding second flowing hole of first flowing hole, and also was provided with at least one the 3rd flowing hole with the described second flowing hole conducting, thereby made flow passage part with restriction choke and fluid passage conducting; When flow passage part was the atresia type, its fluid path with restriction choke and fluid passage blocked; The annular space conducting of described the 3rd flowing hole and restriction choke body.
Because the restriction choke that the utility model provides adopts as above structure, when reality is used, for example: when this restriction choke being applied under the occasion of balanced screen casing, can be according to the fuel-displaced situation on stratum, flow passage part by different perforate quantity reasonably combined, the flowing hole that makes on the fluid passage to be offered is changing between the open and close and between big and little, the size of regulating inflow-rate of water turbine like a cork very, thus realize the purpose of current limliting.
The radially current-limiting type restriction choke that radially inserts described in the utility model wherein, can be set up sealing ring and pressure pad, so that guarantee being sealed and matched of flow passage part pilot hole and flow passage part between described flow passage part and described plug wire.
The radially current-limiting type restriction choke that radially inserts described in the utility model wherein, can be provided with spiral bar on the restriction choke body, use so that make this restriction choke be used as the spiral centralizer.
The radially current-limiting type restriction choke that radially inserts described in the utility model wherein, in the 3rd flowing hole on flow passage part, preferably studs with corrosion-resistant erosion resistant lining, to prolong the application life of this flowing hole.
In order to realize the purpose of this utility model, the utility model also provides a kind of balanced screen casing, comprise that fluid passage is parent tube, combined filtration thimble assembly and restriction choke, the tube wall of described parent tube is provided with a plurality of first flowing holes, the coaxial outside that is set in described parent tube of described combined filtration thimble assembly and restriction choke, wherein said restriction choke has adopted the above-mentioned radially current-limiting type restriction choke that radially inserts, described first flowing hole and the conducting of restriction choke annular space.
According to above-mentioned conception, this combined filtration thimble assembly comprises internal protective cover and outer jointing jacket, and a plurality of filter screens between the outer jointing jacket in being located at; On this internal protective cover, be provided with a plurality of projectioies, and be provided with a plurality of the 4th flowing holes in the part except that a plurality of projectioies on this internal protective cover; Also be provided with a plurality of the 5th flowing holes on this outer jointing jacket.
According to above-mentioned conception, described projection is outstanding towards this parent tube, to form annular flow space between this parent tube and this combined filtration thimble assembly, the chute conducting excessively of the described annular flow space and the second restriction choke supporting disk.
According to above-mentioned conception, described a plurality of filter screens are rolled into cylindrical shape by flaky material and with two edges partial stack and form cylindric in addition.
According to above-mentioned conception, arrange in the shape of a spiral by mode, linear fashion on internal protective cover for described projection.
According to above-mentioned conception, described projection is bridge-type, circle or special-shaped.
Owing to adopted the combined filtration thimble assembly, made that filtration fraction is that a monolithic is filtered sleeve structure, so can play better sand controlling result.
In actual use, crude oil flows into the combined filtration thimble assembly from the stratum, and the chute of crossing via the restriction choke supporting disk flows in the restriction choke annular space, flows into the parent tube endoporus via the flowing hole on the flow passage part again.
Below, in conjunction with specific embodiments and accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is for radially inserting radially partly cut-away's schematic diagram of current-limiting type restriction choke;
Fig. 2 is the cross-sectional view of flow passage part, i.e. the enlarged diagram of part shown in the A among Fig. 1;
Fig. 3 is partly cut-away's schematic diagram of balanced screen casing;
Fig. 4 is partly cut-away's schematic diagram of combined filtration thimble assembly.
The specific embodiment
With reference to Fig. 1, it is the radially partly cut-away's schematic diagram of current-limiting type restriction choke that radially inserts described in the utility model.As can be seen from Figure 1, restriction choke 1 comprises restriction choke body 11 and the first throttle device supporting disk 12 and the second restriction choke supporting disk 13, wherein this second restriction choke supporting disk 13 was provided with chute 14, in restriction choke body 11, be formed with restriction choke annular space 15, chute 14 conductings excessively of restriction choke annular space 15 and this second restriction choke supporting disk 13, and on restriction choke body 11, offer a plurality of flow passage part pilot holes 16.
In addition, use in order to make restriction choke 1 can be used as the spiral centralizer, restriction choke body 11 provided by the utility model is provided with spiral bar 17.
In conjunction with Fig. 2, flow passage part pilot hole 16 is corresponding with first flowing hole 31 offered on the fluid passage 3 respectively, be equipped with flow passage part 2 in each flow passage part pilot hole 16, flow passage part 2 radially is inserted in the flow passage part pilot hole 16 and by fixture such as plug wire 22 location, the top of flow passage part 2 is inserted in first flowing hole of being offered on the fluid passage 3 31.In the present embodiment, flow passage part 2 is porose type, it is provided with and this first flowing hole 31 corresponding second flowing holes 21, and with the 3rd flowing hole 21 ' of described second flowing hole 21 conductings, described second flowing hole 21 and the 3rd flowing hole 21 ' are with first flowing hole 31 and 15 conductings of restriction choke annular space on the fluid passage 3.Flow passage part 2 also can be anapsid, and it is used for replacing and the fluid path of the restriction choke and first flowing hole 31 can being blocked with the flow passage part 2 that pass is arranged.
As can be seen from Figure 2, between flow passage part 2 and described fixture 22, have additional sealing ring 23 and pressure pad 24, and in the present embodiment, this flow passage part 2 is provided with 1 and first flowing hole, 31 corresponding second flowing holes 21, and 2 the 3rd flowing holes 21 ' with 21 conductings of described second flowing hole, in described the 3rd flowing hole 21 ', all stud with corrosion-resistant erosion resistant lining 25, described lining 25 can be selected a kind of in tungsten alloy, pottery, polytetrafluoroethylene (PTFE) or the powder metallurgy for use.
With reference to Fig. 3, it is partly cut-away's schematic diagram of balanced screen casing described in the utility model.Balanced screen casing comprises fluid passage 3 (being referred to as parent tube 3 in the present embodiment), combined filtration thimble assembly 4 and restriction choke 1, combined filtration thimble assembly 4 and restriction choke 1 coaxial being set on the parent tube 3.
In conjunction with Fig. 4, combined filtration thimble assembly 4 comprises internal protective cover 41, multiple filtration silk screen 42 and outer jointing jacket 43 from inside to outside successively, is provided with a plurality of protruding 44 in these internal protective cover 41 upper punches; Thereby described protruding 44 are close to the stream that causes between avoiding because of internal protective cover 41 and parent tube 3 not freely and the obstruction of stream so that form the earial drainage space between internal protective cover 41 and the parent tube 3 towards parent tube 3 is outstanding.Chute 14 conductings excessively of described earial drainage space and this second restriction choke supporting disk 13.
Described protruding 44 can mode or linear fashion arrangement in the shape of a spiral on internal protective cover.Described projection is bridge-type, circle or special-shaped.
Be provided with a plurality of the 4th flowing holes 45 in the part except that projection 44 on this internal protective cover 41 in addition.On outer jointing jacket 43, also offer a plurality of the 5th flowing holes 46.Described the 4th flowing hole 45 and the 5th flowing hole 46 can be slit, bridge-type hole, circular hole.
In the present embodiment, multiple filtration silk screen 42 is rolled into cylindrical shape by flaky material and with two edges partial stack and form cylindric in addition.
It can also be seen that from Fig. 3 the two ends of parent tube 3 are processed with gas thread 32, cooperate with box cupling 33 by gas thread 32.The two ends of restriction choke 1 are fixed on the parent tube 3 by a pair of restriction choke supporting disk 12,13 of self, combined filtration thimble assembly 4 and restriction choke 1 an adjacent end is fixed on the parent tube 3 by the restriction choke supporting disk 13 that one of them was provided with chute 14, and combined filtration thimble assembly 4 other ends then are fixed on the parent tube 3 by filtering collar supports dish 47.
Flow controller provided by the utility model and balancing sieve tube have following characteristics:
1, processing rational in infrastructure, easy
Flow passage part in the flow controller of the present utility model is simple in structure to make things convenient for current limliting or conducting.
The utility model is because the internal protective cover punching is provided with a plurality of projections, and this special structure has increased the annular space earial drainage area between internal protective cover and the parent tube, thereby can increase the flow velocity of fluid; In addition, owing to the stream at fluid is provided with projection, described projection can form the fluid that flows out in the 5th flowing hole on internal protective cover to impact to change flow direction and produce turbulent flow, thereby can prevent the obstruction of sand grains deposition; In addition, projection of the present utility model arrange can be as required and design is that spiral way is arranged and the stream that makes fluid twist, so both prevented the filter medium sand setting, adopt again the row's of returning measure to solve a stifled sand difficult problem, and have washed-out sand and sand control effect.
Multiple filtration silk screen in the combined filtration thimble assembly is rolled into cylindrical shape by flaky material and with two edges partial stack and form cylindric in addition, welding, can injury to screen pack, and screen pack is not subjected to interiorly to squeeze basically, the impact of external pressure and torsion.
2, site operation is convenient
When constructing at the scene, only need flow passage part radially is inserted into position, institute bonding part, can conveniently locate through plug wire, and because the number of openings difference of the flowing hole on the flow passage part, the size that the collocation by different flow passage parts just can the easy adjustment inflow-rate of water turbine.
3, flow controller can one-object-many-purposes
Because the body of flow controller is provided with spiral bar, therefore can be with flow controller when the spiral centering device use.
4, the sand control filter effect is better
The combined filtration thimble assembly is monolithic construction, and the bridge-type salient point on the internal protective cover has increased annular space earial drainage area, can effectively prevent the filter medium sand setting.
Claims (9)
1. one kind is radially inserted radially current-limiting type restriction choke, it is used to control the fluid flow of fluid passage, this restriction choke comprises restriction choke body and the first throttle device supporting disk and the second restriction choke supporting disk, and this first, second restriction choke supporting disk is arranged at the two ends of restriction choke body respectively; It is characterized in that:
This second restriction choke supporting disk is provided with the chute excessively that is used to import fluid, is formed with the restriction choke annular space in this restriction choke body, this restriction choke annular space and chute conducting excessively; And also be provided with a plurality of flow passage part pilot holes on this restriction choke body, offer first flowing hole on the tube wall corresponding to the fluid passage of flow passage part pilot hole position; Be provided with flow passage part in each flow passage part pilot hole, and its flow passage part fixed by fixture; Insert in first flowing hole of the fluid passage for the treatment of current limliting at the top of flow passage part, and flow passage part comprises atresia and porose two types;
When flow passage part was porose type, this flow passage part was provided with and corresponding second flowing hole of first flowing hole, and also was provided with at least one the 3rd flowing hole with the described second flowing hole conducting, thereby made flow passage part with restriction choke and fluid passage conducting; When flow passage part was the atresia type, its fluid path with restriction choke and fluid passage blocked;
The annular space conducting of described the 3rd flowing hole and restriction choke body.
2. the radially current-limiting type restriction choke that radially inserts as claimed in claim 1, it is characterized in that: this current limiter body is provided with spiral bar.
3. the radially current-limiting type restriction choke that radially inserts as claimed in claim 1 is characterized in that: stud with corrosion-resistant erosion resistant lining in the 3rd flowing hole on flow passage part.
4. balanced screen casing, comprise that fluid passage is parent tube, combined filtration thimble assembly and restriction choke, the tube wall of described parent tube is provided with a plurality of first flowing holes, the coaxial outside that is set in described parent tube of described combined filtration thimble assembly and restriction choke, it is characterized in that: described restriction choke has adopted any described radially current-limiting type restriction choke that radially inserts in the claim 1～3, described first flowing hole and restriction choke conducting.
5. balanced screen casing as claimed in claim 4 is characterized in that: this combined filtration thimble assembly comprises internal protective cover and outer jointing jacket, and a plurality of filter screens between the outer jointing jacket in being located at; On this internal protective cover, be provided with a plurality of projectioies, and be provided with a plurality of the 4th flowing holes in the part except that a plurality of projectioies on this internal protective cover; Also be provided with a plurality of the 5th flowing holes on this outer jointing jacket.
6. balanced screen casing as claimed in claim 5 is characterized in that: described projection is outstanding towards this parent tube, to form annular flow space between this parent tube and this combined filtration thimble assembly, the chute conducting excessively of the described annular flow space and the second restriction choke supporting disk.
7. balanced screen casing as claimed in claim 5 is characterized in that: described a plurality of filter screens are rolled into cylindrical shape by flaky material and with two edges partial stack and form cylindric in addition.
8. balanced screen casing as claimed in claim 5, mode, linear fashion are arranged in the shape of a spiral on internal protective cover to it is characterized in that described projection.
9. balanced screen casing as claimed in claim 5 is characterized in that described projection is bridge-type, circle or special-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202783462U CN201588617U (en) | 2009-12-28 | 2009-12-28 | Radial-inserted radial current-limit type restrictor and balance sieve tube with the restrictor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202783462U CN201588617U (en) | 2009-12-28 | 2009-12-28 | Radial-inserted radial current-limit type restrictor and balance sieve tube with the restrictor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588617U true CN201588617U (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202783462U Expired - Lifetime CN201588617U (en) | 2009-12-28 | 2009-12-28 | Radial-inserted radial current-limit type restrictor and balance sieve tube with the restrictor |
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| Country | Link |
|---|---|
| CN (1) | CN201588617U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108850A (en) * | 2009-12-28 | 2011-06-29 | 思达斯易能源技术(集团)有限公司 | Radial-inserting and radial-throttling type throttler and balance sieve tube employing same |
| CN104897439A (en) * | 2014-03-07 | 2015-09-09 | 中华人民共和国四川出入境检验检疫局 | Chemical detection liquid extraction tube used for extraction of granular sample |
-
2009
- 2009-12-28 CN CN2009202783462U patent/CN201588617U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108850A (en) * | 2009-12-28 | 2011-06-29 | 思达斯易能源技术(集团)有限公司 | Radial-inserting and radial-throttling type throttler and balance sieve tube employing same |
| CN104897439A (en) * | 2014-03-07 | 2015-09-09 | 中华人民共和国四川出入境检验检疫局 | Chemical detection liquid extraction tube used for extraction of granular sample |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100922 |