CN102108850B - Containing the radial balancing sieve tube inserting radial current-limiting type restriction choke - Google Patents
Containing the radial balancing sieve tube inserting radial current-limiting type restriction choke Download PDFInfo
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- CN102108850B CN102108850B CN200910243110.XA CN200910243110A CN102108850B CN 102108850 B CN102108850 B CN 102108850B CN 200910243110 A CN200910243110 A CN 200910243110A CN 102108850 B CN102108850 B CN 102108850B
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- restriction choke
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- flowing hole
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Abstract
The invention provides a kind of radial direction and insert radial current-limiting type restriction choke and the balancing sieve tube containing this restriction choke, restriction choke is for controlling the fluid flow of fluid passage, it comprises restriction choke body and restriction choke supporting disk, in flow passage part pilot hole on described restriction choke body, radial direction is provided with flow passage part, flow passage part comprises atresia and porose two types, when for porose type, flow passage part offers the flowing hole that quantity does not wait; Balancing sieve tube comprises fluid passage and base tube, combined filtration thimble assembly and radial insertion radial current-limiting type restriction choke; combined filtration thimble assembly and restriction choke coaxial sleeve are located at the outside of base tube, and described combined filtration thimble assembly comprises internal protective cover, multiple filtration silk screen and outer jointing jacket.Reasonably combined by the flow passage part of different the number of openings, make the flowing hole on base tube very like a cork between open and close and large and little between change, thus realize the object of current limliting.
Description
Technical field
The invention belongs to flow equilibrium device technique field, relate to a kind of restriction choke and the balancing sieve tube containing this restriction choke thereof, particularly relate to a kind of radial insertion radial current-limiting type restriction choke and contain this restriction choke balancing sieve tube.
Background technology
In oil, gas exploitation course, balancing sieve tube extends the downhole production device of the balanced pressure drop of net horizontal section as sand control filtration and flow restriction control, it can suppress Di Shui and limit water water ridge to move unbalanced phenomenon, thus realize playing the production capacity of whole horizontal segment, extending the object in the life-span of horizontal well, finally make oil well reach maximum economic benefit.
There are problems in horizontal wells process, the subject matter particularly existed in horizontal well limit, bottom-water reservoir development process is in two: one is limit water, bottom water coning problem, and another is oil-gas reservoir production capacity problem.
Disclose a kind of balance-type screen casing in prior art, this balance-type screen casing is made up of restriction choke, cartridge filter and center base tube.In above-mentioned restriction choke, flow control device structure is made up of a unique screw type circulation groove, its as control element for shunting the pressure distribution along whole net horizontal section.Although this balance-type screen casing, while guaranteeing to regulate output flow, also improves the reliability of oil well production, its technological deficiency existed is: 1, screw type runner easily causes blocking; 2, well data must be obtained in advance to design runner, thus form fixing form, be unfavorable for the adjustment at oil well production scene; 3, product structure is complicated, is unfavorable for processing.
Summary of the invention
A kind of radial direction is the object of the present invention is to provide to insert radial current-limiting type restriction choke and the balancing sieve tube containing this restriction choke thereof, flow passage part in this restriction choke is rational in infrastructure, be convenient to processing, at the scene during construction by simple operations, just can the size of adjusted flow very like a cork; Filtration fraction in this balancing sieve tube have employed monolithic construction, its filter screen is rolled into cylindrical shape by flaky material and by two edges partial stack and being formed in addition, without the need to welding, any damage can not be caused to filter screen, therefore, it is possible to meet the actual needs of different exploitation of oil-gas field, be beneficial to overcome above-mentioned defect existing in prior art.
To achieve these goals, the invention provides a kind of radial insertion radial current-limiting type restriction choke, it is for controlling the fluid flow of fluid passage, this restriction choke comprises restriction choke body and first throttle device supporting disk and second 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 choke supporting disk is provided with the chute excessively for importing fluid, is formed with restriction choke annular space in this restriction choke body, this restriction choke annular space and chute conducting excessively; And this restriction choke body is also provided with multiple flow passage part pilot hole, the tube wall corresponding to the fluid passage of flow passage part pilot hole position offers the first flowing hole, in each flow passage part pilot hole, be equipped with flow passage part; Flow passage part to insert in flow passage part pilot hole and is fixed by fixture, and the top of flow passage part is inserted and treated in the first flowing hole of the fluid passage of current limliting, and flow passage part comprises atresia and porose two types; When flow passage part is porose type, this flow passage part is provided with second flowing hole corresponding with the first flowing hole, and is also provided with at least one the 3rd flowing hole with described second flowing hole conducting, thus makes flow passage part by restriction choke and fluid passage conducting; When flow passage part is atresia type, the fluid path of restriction choke and fluid passage blocks by it; The annular space conducting of described 3rd flowing hole and restriction choke body.
Because restriction choke provided by the invention adopts as above structure, when reality uses, such as: when under the occasion this restriction choke being applied to balancing sieve tube, can according to the fuel-displaced situation on stratum, reasonably combined by the flow passage part of different the number of openings, make flowing hole that fluid passage is offered between open and close and large and little between change, the size of adjusted flow very like a cork, thus realize the object of current limliting.
Radial direction of the present invention inserts radial current-limiting type restriction choke, wherein, can set up sealing ring and pressure pad between described flow passage part and described plug wire, to guarantee being sealed and matched of flow passage part pilot hole and flow passage part.
Radial direction of the present invention inserts radial current-limiting type restriction choke, wherein, restriction choke body can be provided with spiral bar, uses to make this restriction choke be used as spiral centering device.
Radial direction of the present invention inserts radial current-limiting type restriction choke, wherein, in the 3rd flowing hole on flow passage part, preferably studs with corrosion-resistant erosion resistant lining, to extend the application life of this flowing hole.
In order to realize object of the present invention, the present invention also provides a kind of balancing sieve tube, comprise fluid passage and base tube, combined filtration thimble assembly and restriction choke, the tube wall of described base tube is provided with multiple first flowing hole, described combined filtration thimble assembly and restriction choke coaxial sleeve are located at the outside of described base tube, wherein said restriction choke have employed above-mentioned radial direction and inserts radial current-limiting type restriction choke, 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 is located at the multiple filter screens between interior outer jointing jacket; This internal protective cover is provided with multiple projection, and the part on this internal protective cover except multiple projection is provided with multiple 4th flowing hole; This outer jointing jacket is also provided with multiple 5th flowing hole.
According to above-mentioned conception, described projection is given prominence to towards this base tube, to form annular flow space between this base tube and this combined filtration thimble assembly, and the chute conducting excessively of described annular flow space and second choke supporting disk.
According to above-mentioned conception, described multiple filter screen is rolled into cylindrical shape by flaky material and by two edges partial stack and form cylindrical shape in addition.
According to above-mentioned conception, described projection can helically mode, linear fashion arrangement on internal protective cover.
According to above-mentioned conception, described projection is bridge-type, circle or special-shaped.
Owing to have employed combined filtration thimble assembly, filtration fraction is made to be an Integral filtering sleeve structure, so better sand controlling result can be played.
In actual use, crude oil flows into combined filtration thimble assembly from stratum, via the chute excessively of restriction choke supporting disk, flows in restriction choke annular space, then flows into base tube endoporus via the flowing hole on flow passage part.
Below, in conjunction with specific embodiments and accompanying drawing the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the radial partly cut-away's schematic diagram inserting radial current-limiting type restriction choke;
Fig. 2 is the cross-sectional view of flow passage part, i.e. the shown enlarged diagram partly of A in Fig. 1;
Fig. 3 is partly cut-away's schematic diagram of balancing sieve tube;
Fig. 4 is partly cut-away's schematic diagram of combined filtration thimble assembly.
Detailed description of the invention
With reference to Fig. 1, it is partly cut-away's schematic diagram that radial direction of the present invention inserts radial current-limiting type restriction choke.As can be seen from Figure 1, restriction choke 1 comprises restriction choke body 11 and first throttle device supporting disk 12 and second choke supporting disk 13, this second choke supporting disk 13 was wherein provided with chute 14, restriction choke annular space 15 is formed in restriction choke body 11, restriction choke annular space 15 crosses chute 14 conducting with this second choke supporting disk 13, and on restriction choke body 11, offer multiple flow passage part pilot hole 16.
In addition, can be used as spiral centering device to make restriction choke 1 and use, restriction choke body 11 provided by the present invention is provided with spiral bar 17.
Composition graphs 2, flow passage part pilot hole 16 is corresponding with the first flowing hole 31 that fluid passage 3 is offered respectively, flow passage part 2 is equipped with in each flow passage part pilot hole 16, flow passage part 2 radial direction is inserted in flow passage part pilot hole 16 and by fixture as plug wire 22 is located, the top of flow passage part 2 is inserted in the first flowing hole 31 that fluid passage 3 is offered.In the present embodiment, flow passage part 2 is porose type, it is provided with second flowing hole 21 corresponding with this first flowing hole 31, and with the 3rd flowing hole 21 ' of described second flowing hole 21 conducting, described second flowing hole 21 and the 3rd flowing hole 21 ' are by the first flowing hole 31 on fluid passage 3 and restriction choke annular space 15 conducting.Flow passage part 2 also can be anapsid, its for have the flow passage part 2 of pass to replace and the fluid path of restriction choke and the first flowing hole 31 can be blocked.
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, further, in the present embodiment, this flow passage part 2 is provided with 1 second flowing hole 21 corresponding with the first flowing hole 31, and 2 with the 3rd flowing hole 21 ' of described second flowing hole 21 conducting, in described 3rd flowing hole 21 ', all stud with corrosion-resistant erosion resistant lining 25, described lining 25 can select the one in tungsten alloy, pottery, polytetrafluoroethylene (PTFE) or powder metallurgy.
With reference to Fig. 3, it is partly cut-away's schematic diagram of balancing sieve tube of the present invention.Balancing sieve tube comprises fluid passage 3 (being referred to as base tube 3 in the present embodiment), combined filtration thimble assembly 4 and restriction choke 1, and combined filtration thimble assembly 4 and restriction choke 1 coaxial sleeve are located on base tube 3.
Composition graphs 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 multiple protruding 44 in this internal protective cover 41 upper punch; Described protruding 44 is outstanding to make to form earial drainage space between internal protective cover 41 and base tube 3 thus to avoid the blocking of the smooth and stream of the stream that causes because being close between internal protective cover 41 and base tube 3 towards base tube 3.Chute 14 conducting excessively of described earial drainage space and this second choke supporting disk 13.
Described protruding 44 can helically mode or linear fashion can arrange on internal protective cover.Described projection is bridge-type, circle or special-shaped.
Another part on this internal protective cover 41 except protruding 44 is provided with multiple 4th flowing hole 45.Outer jointing jacket 43 also offers multiple 5th flowing hole 46.Described 4th flowing hole 45 and the 5th flowing hole 46 can be gap, bridge-type hole, circular hole.
In the present embodiment, multiple filtration silk screen 42 is rolled into cylindrical shape by flaky material and by two edges partial stack and form cylindrical shape in addition.
It can also be seen that from Fig. 3, the two ends of base tube 3 are processed with gas thread 32, are coordinated with box cupling 33 by gas thread 32.The two ends of restriction choke 1 are fixed on base tube 3 by a pair restriction choke supporting disk 12,13 of self, the restriction choke supporting disk 13 that combined filtration thimble assembly 4 one end adjacent with restriction choke 1 was provided with chute 14 by one of them is fixed on base tube 3, and combined filtration thimble assembly 4 other end is then fixed on base tube 3 by filtration collar supports dish 47.
Restriction choke provided by the present invention and balancing sieve tube have following characteristics:
1, rational in infrastructure, easily process
Flow passage part structure in restriction choke of the present invention simply can facilitate current limliting or conducting.
The present invention is provided with multiple projection because internal protective cover rushes, and this special structure adds the annular space drainage area between internal protective cover and base tube, thus can increase the flow velocity of fluid; In addition, owing to being provided with projection on the stream of fluid, described projection can be formed to impact to the fluid flowed out in the 5th flowing hole on internal protective cover and produce turbulent flow with alter direction, thus can prevent sand grains from depositing blocking; In addition, projection of the present invention arrangement can as required and the helically mode that designs arranges and make fluid stream twist, so both prevent filter medium sand setting, adopt again the row's of returning measure to solve a stifled sand difficult problem, and there is washed-out sand and sand control effect.
Multiple filtration silk screen in combined filtration thimble assembly is rolled into cylindrical shape by flaky material and by two edges partial stack and form cylindrical shape in addition, welding, can not damage be caused to screen pack, and screen pack substantially by interiorly squeezing, the impact of external pressure and torsion.
2, site operation is convenient
When constructing at the scene, only flow passage part radial direction need be inserted into position, institute bonding part, can conveniently locate through plug wire, and due to the number of openings of the flowing hole on flow passage part different, just can the size of easy adjustment inflow-rate of water turbine by the collocation of different flow passage parts.
3, restriction choke can one-object-many-purposes
Because the body of restriction choke is provided with spiral bar, therefore can by restriction choke when spiral centering device uses.
4, sand control filter effect is better
Combined filtration thimble assembly is monolithic construction, and the bridge-type salient point on internal protective cover adds annular space drainage area, can effectively prevent filter medium sand setting.
Claims (7)
1. a balancing sieve tube, comprises base tube, combined filtration thimble assembly and restriction choke, and the tube wall of described base tube is provided with multiple first flowing hole, and described combined filtration thimble assembly and restriction choke coaxial sleeve are located at the outside of described base tube, it is characterized in that,
Described restriction choke is radial insertion radial current-limiting type restriction choke, for controlling the fluid flow of fluid passage, and described first flowing hole and restriction choke conducting;
Described radial direction is inserted radial current-limiting type restriction choke and is comprised restriction choke body and first throttle device supporting disk and second choke supporting disk, and first, second restriction choke supporting disk described is arranged at the two ends of described restriction choke body respectively; Described second choke supporting disk is provided with the chute excessively for importing fluid, is formed with restriction choke annular space in described restriction choke body, described restriction choke annular space and described chute conducting excessively; And described restriction choke body is also provided with multiple flow passage part pilot hole, the tube wall corresponding to the described fluid passage of described flow passage part pilot hole position offers the first flowing hole; Be provided with flow passage part in each described flow passage part pilot hole, and by fixture, described flow passage part fixed; The top of described flow passage part is inserted and is treated in described first flowing hole of the described fluid passage of current limliting, and described flow passage part comprises atresia and porose two types;
When described flow passage part is porose type, described flow passage part is provided with second flowing hole corresponding with described first flowing hole, and be also provided with at least one the 3rd flowing hole with described second flowing hole conducting, described 3rd flowing hole is communicated with described restriction choke annular space, and described second flowing hole and the 3rd flowing hole are by described first flowing hole and the conducting of described restriction choke annular space; When described flow passage part is atresia type, the fluid path of described restriction choke annular space and described first flowing hole blocks by described flow passage part;
Described combined filtration thimble assembly comprises internal protective cover and outer jointing jacket, and is located at the multiple filter screens between interior outer jointing jacket; Described internal protective cover is provided with multiple projection, and the part on described internal protective cover except multiple projection is provided with multiple 4th flowing hole; Described outer jointing jacket is also provided with multiple 5th flowing hole.
2. balancing sieve tube as claimed in claim 1, it is characterized in that, described restriction choke body is provided with spiral bar.
3. balancing sieve tube as claimed in claim 1, is characterized in that, stud with corrosion-resistant erosion resistant lining in described 3rd flowing hole on described flow passage part.
4. balancing sieve tube as claimed in claim 1, is characterized in that, described projection is given prominence to towards described base tube, to form annular flow space between described base tube and described combined filtration thimble assembly, and the chute conducting excessively of described annular flow space and second choke supporting disk.
5. balancing sieve tube as claimed in claim 1, is characterized in that, described multiple filter screen is rolled into cylindrical shape by flaky material and by two edges in addition partial stack and form cylindrical shape.
6. balancing sieve tube as claimed in claim 1, is characterized in that, described projection is helically mode, linear fashion arrangement on internal protective cover.
7. balancing sieve tube as claimed in claim 1, it is characterized in that, described projection is bridge-type, circle or special-shaped.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910243110.XA CN102108850B (en) | 2009-12-28 | 2009-12-28 | Containing the radial balancing sieve tube inserting radial current-limiting type restriction choke |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910243110.XA CN102108850B (en) | 2009-12-28 | 2009-12-28 | Containing the radial balancing sieve tube inserting radial current-limiting type restriction choke |
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| CN102108850A CN102108850A (en) | 2011-06-29 |
| CN102108850B true CN102108850B (en) | 2015-09-16 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108561107A (en) * | 2018-06-28 | 2018-09-21 | 唐山冀东石油机械有限责任公司 | Multistage water injection process pipe string and its remove method |
| CN110608017A (en) * | 2019-10-23 | 2019-12-24 | 河北恒英金属制品有限公司 | Improved oil sand control pipe |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6367546B1 (en) * | 1999-11-30 | 2002-04-09 | Carpenter Advanced Ceramics, Inc. | Ceramic components for high pressure oil wells |
| NO314701B3 (en) * | 2001-03-20 | 2007-10-08 | Reslink As | Flow control device for throttling flowing fluids in a well |
| CN2564733Y (en) * | 2002-08-26 | 2003-08-06 | 滕瑞华 | Spiral Sucker Rod Centralizer |
| CN100453770C (en) * | 2002-12-23 | 2009-01-21 | 北京海能海特石油科技发展有限公司 | Sieve tube with flow adjuster |
| CN1888379A (en) * | 2006-07-15 | 2007-01-03 | 易会安 | Sandproof integrated compound screening pipe and processing method thereof |
| US7832473B2 (en) * | 2007-01-15 | 2010-11-16 | Schlumberger Technology Corporation | Method for controlling the flow of fluid between a downhole formation and a base pipe |
| CN201059182Y (en) * | 2007-06-26 | 2008-05-14 | 东营市丰泰石化机械配件有限责任公司 | Multi-purpose stainless composite sieve tube |
| CN101270644A (en) * | 2008-04-30 | 2008-09-24 | 安东石油技术（集团）有限公司 | Sieve tube with bulged internal support sleeve and its processing method |
| CN201262293Y (en) * | 2008-09-18 | 2009-06-24 | 浙江伟星新型建材股份有限公司 | Insertion type connecting pipe fittings for flexible plastic pipeline |
| CN201588617U (en) * | 2009-12-28 | 2010-09-22 | 思达斯易能源技术(集团)有限公司 | Radial-inserted radial current-limit type restrictor and balance sieve tube with the restrictor |
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