CN201588613U - Radial-plugging radial-restricting choke holder and balancing sieve tube employing same - Google Patents
Radial-plugging radial-restricting choke holder and balancing sieve tube employing same Download PDFInfo
- Publication number
- CN201588613U CN201588613U CN2009202782686U CN200920278268U CN201588613U CN 201588613 U CN201588613 U CN 201588613U CN 2009202782686 U CN2009202782686 U CN 2009202782686U CN 200920278268 U CN200920278268 U CN 200920278268U CN 201588613 U CN201588613 U CN 201588613U
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- restriction choke
- flow
- choke
- radially
- constriction
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Abstract
The utility model provides a radial-plugging radial-restricting choke holder and a balancing sieve tube employing the same. The choke holder is used for controlling liquid quantity in a liquid passage, and comprises a choke holder body and a choke holder supporting disk; flow-restricting part pilot holes are formed on the choke holder body, and respectively correspond to flow holes formed on liquid passage; corrosion and erosion resistant oil nozzles are embedded into the flow holes, and plugging parts such as plug rivets are inserted into the corrosion and erosion resistant oil nozzles; the plugging parts are positioned through flow-restricting parts; the balancing sieve tube comprises the liquid passage, namely, a base tube, a composite filtering sleeve component and the choke holder; the composite filtering sleeve component and the choke holder are coaxially sleeved outside the base tube; the composite filtering sleeve component comprises an inner protective sleeve, a multilayer filtering silk screen and an outer protective sleeve. By inserting the plug rivets into or removing the plug rivets out of all the corrosion and erosion resistant oil nozzles, all the flow holes formed on the base tube can change between opening and closing conditions; therefore, the magnitude of flow quantity can be easily regulated, so as to realize the purpose of flow restriction.
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 radially current-limiting type restriction choke and contain the balanced screen casing of this restriction choke of a kind of radially shutoff.
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 radially current-limiting type restriction choke and contain the balanced screen casing of this restriction choke of a kind of radially shutoff, 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 radially current-limiting type restriction choke of a kind of radially shutoff, 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 the described restriction choke body, this restriction choke annular space and chute conducting excessively; And offer a plurality of constriction pilot holes on this restriction choke body, this constriction pilot hole is corresponding with first flowing hole on the fluid passage for the treatment of current limliting respectively, in the constriction pilot hole, be equipped with constriction, leave flow channels between the constriction and first flowing hole, described flow channels is with this first flowing hole and the conducting of restriction choke annular space; Optionally insert closeouts with this first flowing hole shutoff and current limliting in this first flowing hole, this closeouts is fixed by constriction.
According to above-mentioned conception, stud with corrosion-resistant erosion resistant oil nozzle in described first flowing hole.
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, by in each corrosion-resistant erosion resistant oil nozzle, inserting closeouts or removing closeouts, each first flowing hole that makes on the fluid passage to be offered changes between open and close, the size of regulating inflow-rate of water turbine like a cork very, thus realize the purpose of current limliting.
Radially shutoff described in the utility model is the current-limiting type restriction choke radially, wherein, can set up sealing ring between described restriction choke body and the described second restriction choke supporting disk, so that guarantee being sealed and matched of restriction choke body and restriction choke supporting disk.
In order to realize another purpose of the present 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 radially current-limiting type restriction choke of above-mentioned radially shutoff, 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 second flowing holes in the part except that a plurality of projectioies on this internal protective cover; Also be provided with a plurality of the 3rd 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 second restriction choke supporting disk flows in the restriction choke annular space, flows into the parent tube endoporus via flow channels and corrosion-resistant erosion resistant oil nozzle again.
Below, in conjunction with specific embodiments and accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is radially partly cut-away's schematic diagram of current-limiting type restriction choke of radially shutoff;
Fig. 2 is 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 described in the utility model;
Fig. 4 is partly cut-away's schematic diagram of combined filtration thimble assembly.
The specific embodiment
With reference to Fig. 1, it is radially partly cut-away's schematic diagram of current-limiting type restriction choke of radially shutoff described in the utility model.As can be seen from Figure 1, radially shutoff provided by the utility model radially current-limiting type restriction choke 1 comprises restriction choke body 11 and first throttle device supporting disk 12, the second restriction choke supporting disk 13, first and second restriction choke supporting disk 12,13 is arranged at the two ends of restriction choke body 11 respectively, 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, be provided with a plurality of constriction pilot holes 16.In conjunction with Fig. 2, constriction pilot hole 16 is corresponding with first flowing hole 31 offered on the fluid passage 3 respectively, is equipped with constriction 17 in each constriction pilot hole 16; Stud with corrosion-resistant erosion resistant oil nozzle 2 in first flowing hole of on fluid passage 3, being offered 31, between constriction 17 and oil nozzle 2, leave flow channels 18, flow channels 18 is with oil nozzle on the fluid passage 32 and 15 conductings of restriction choke annular space, can be inserted with closeouts 21 in the oil nozzle 2 with the oil nozzle shutoff and current limliting, this closeouts 21 is fixing by constriction 17.Described closeouts 21 can adopt Blind rivet, and described oil nozzle 2 can be selected a kind of in tungsten alloy, pottery, polytetrafluoroethylene (PTFE) or the powder metallurgy for use.
As can be seen from Figure 2, between restriction choke body 11 and restriction choke supporting disk 13, be provided with sealing ring 22.
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, offer a plurality of first flowing holes 31 on the tube wall of parent tube 3, combined filtration thimble assembly 4 and the restriction choke 1 coaxial outside that is set in parent tube 3.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.
In conjunction with Fig. 4; combined filtration thimble assembly 4 comprises internal protective cover 41, a plurality of filter screen 42 and outer jointing jacket 43 from inside to outside successively; be provided with in internal protective cover 41 upper punches a plurality of protruding 44, thereby described protruding 44 be 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 mode or linear fashion arrangements 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 second 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 3rd flowing holes 46.Described second flowing hole 45 and the 3rd flowing hole 46 can be slit, bridge-type hole, circular hole.
In the present embodiment, a plurality of filter screens 42 are 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 the other end then is 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 is simple in structure, is convenient to especially processing.
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 second 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 can be as required on arrangement mode and design is that spiral way is arranged and the stream that makes fluid twist, so both prevented the filter medium sand setting, and adopted again the row's of returning measure to solve a stifled sand difficult problem, and have washed-out sand and sand control effect.
A plurality of filter screens in the combined filtration thimble assembly are rolled into cylindrical shape by flaky material and with two edges partial stack and form cylindricly 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 in each corrosion-resistant erosion resistant oil nozzle, to insert closeouts such as Blind rivet or remove Blind rivet, fix through constriction again, can conveniently adjust the state of the open and close of each first flowing hole of offering on the parent tube, the size that the difference of inserting quantity by Blind rivet just can the easy adjustment inflow-rate of water turbine.
3, 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 (8)
1. shutoff current-limiting type restriction choke radially radially, 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 the described restriction choke body, this restriction choke annular space and chute conducting excessively;
And offer a plurality of constriction pilot holes on this restriction choke body, described constriction pilot hole is corresponding with first flowing hole on the fluid passage for the treatment of current limliting respectively, in the constriction pilot hole, be equipped with constriction, leave flow channels between the constriction and first flowing hole, described flow channels is with this first flowing hole and the conducting of restriction choke annular space;
Optionally insert closeouts with this first flowing hole shutoff and current limliting in this first flowing hole, this closeouts is fixed by constriction.
2. radially shutoff as claimed in claim 1 cuts radially current-limiting type restriction choke, it is characterized in that studding with in described first flowing hole corrosion-resistant erosion resistant oil nozzle.
3. 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 claim 1 or 2 described radially shutoff radially current-limiting type restriction choke, described first flowing hole and the conducting of restriction choke annular space.
4. balanced screen casing as claimed in claim 3 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 second flowing holes in the part except that a plurality of projectioies on this internal protective cover; Also be provided with a plurality of the 3rd flowing holes on this outer jointing jacket.
5. balanced screen casing as claimed in claim 4 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.
6. balanced screen casing as claimed in claim 4 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.
7. balanced screen casing as claimed in claim 4, mode, linear fashion are arranged in the shape of a spiral on internal protective cover to it is characterized in that described projection.
8. balanced screen casing as claimed in claim 4 is characterized in that described projection is bridge-type, circle or special-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202782686U CN201588613U (en) | 2009-12-28 | 2009-12-28 | Radial-plugging radial-restricting choke holder and balancing sieve tube employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202782686U CN201588613U (en) | 2009-12-28 | 2009-12-28 | Radial-plugging radial-restricting choke holder and balancing sieve tube employing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588613U true CN201588613U (en) | 2010-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202782686U Expired - Lifetime CN201588613U (en) | 2009-12-28 | 2009-12-28 | Radial-plugging radial-restricting choke holder and balancing sieve tube employing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588613U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536176A (en) * | 2010-12-30 | 2012-07-04 | 淄博东森石油技术发展有限公司 | Pressure-regulating and water-controlling sand control pipe |
| CN103352677A (en) * | 2013-07-18 | 2013-10-16 | 太仓优尼泰克精密机械有限公司 | Under-pit petroleum sand-preventing filter tube |
| CN104895533A (en) * | 2015-06-25 | 2015-09-09 | 长江大学 | Horizontal well completion and sand control water controlling screen pipe |
| CN112377156A (en) * | 2020-12-04 | 2021-02-19 | 中国石油大学(北京) | Pre-filled sand control screen pipe and processing method thereof |
-
2009
- 2009-12-28 CN CN2009202782686U patent/CN201588613U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536176A (en) * | 2010-12-30 | 2012-07-04 | 淄博东森石油技术发展有限公司 | Pressure-regulating and water-controlling sand control pipe |
| CN103352677A (en) * | 2013-07-18 | 2013-10-16 | 太仓优尼泰克精密机械有限公司 | Under-pit petroleum sand-preventing filter tube |
| CN103352677B (en) * | 2013-07-18 | 2016-01-20 | 太仓优尼泰克精密机械有限公司 | A kind of downhole petroleum sand control filter pipe |
| CN104895533A (en) * | 2015-06-25 | 2015-09-09 | 长江大学 | Horizontal well completion and sand control water controlling screen pipe |
| CN104895533B (en) * | 2015-06-25 | 2016-02-17 | 长江大学 | Horizontal well completion sand control water-control sieve tube |
| CN112377156A (en) * | 2020-12-04 | 2021-02-19 | 中国石油大学(北京) | Pre-filled sand control screen pipe and processing method thereof |
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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 |
Granted publication date: 20100922 |
|
| CX01 | Expiry of patent term |