CN204283370U - Screen casing tubing string and completion tubular column thereof - Google Patents
Screen casing tubing string and completion tubular column thereof Download PDFInfo
- Publication number
- CN204283370U CN204283370U CN201420650038.9U CN201420650038U CN204283370U CN 204283370 U CN204283370 U CN 204283370U CN 201420650038 U CN201420650038 U CN 201420650038U CN 204283370 U CN204283370 U CN 204283370U
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- CN
- China
- Prior art keywords
- screen casing
- tubing string
- casing tubing
- base tube
- topping
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- 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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- 230000003628 erosive effect Effects 0.000 claims abstract description 75
- 239000012530 fluid Substances 0.000 claims abstract description 62
- 230000002265 prevention Effects 0.000 claims abstract description 49
- 238000012856 packing Methods 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000004576 sand Substances 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 15
- 239000010410 layer Substances 0.000 description 8
- 238000004088 simulation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
Abstract
The utility model discloses a kind of screen casing tubing string and completion tubular column thereof, described screen casing tubing string comprises many common screen casings, described common screen casing comprises the first base tube, and multiple first through holes arranged on described base tube, described first through hole is disposed with the first supporting layer, the first filtration beds, the first topping from the inside to the outside, described many common screen casings are in turn connected to form common screen casing tubing string, and described common screen casing tubing string two ends are provided with fluid erosion prevention screen casing; Multiple second through holes that described fluid erosion prevention screen casing comprises the second base tube and arranges on described base tube; Described second through hole is disposed with from the inside to the outside the second supporting layer, the second filtration beds, the second topping; Described second topping is the topping with calking structure.The utility model easily by the feature of erosion attack for screen casing tubing string two ends in gravel-packing process in horizontal wells, proposes and respectively increases by one section of fluid erosion prevention screen casing at common screen casing tubing string two ends, effectively can resist the erosion attack containing sand flow body.
Description
Technical field
The utility model relates to oil gas well mining field, particularly a kind of screen casing tubing string and completion tubular column thereof.
Background technology
SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL sand control technique is that one can ACTIVE CONTROL to be shaked out scale, the sand control technique of long-term maintenance high output of oilwell and maintenance wellbore stability, be particularly suitable for loosening the oil reservoir of fine silt, can solve sand control screen blocking and damage problem, fine silt prevents and treats difficult problem.Its strong adaptability, sand controlling result are good, the sand control life is long, obtain generally acknowledging of sand control field, the world.
The screen casing tubing string used in SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL sand control technique is generally common wire-wrapped screen or inserted metal screen screen casing tubing string.In gravel-packing process in horizontal wells, there is screen casing tubing string by erosion attack, and cause the phenomenon of gravel pack failure.
Therefore in gravel-packing process in horizontal wells, need a kind of screen casing tubing string effectively can resisting erosion.
Utility model content
The purpose of this utility model is to provide a kind of screen casing tubing string, for solving in gravel-packing process in horizontal wells screen casing tubing string easily by the problem of erosion attack.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
A kind of screen casing tubing string, described screen casing tubing string comprises many common screen casings, described common screen casing comprises the first base tube, and multiple first through holes arranged on described base tube, described first through hole is disposed with the first supporting layer, the first filtration beds, the first topping from the inside to the outside, described many common screen casings are in turn connected to form common screen casing tubing string, and described common screen casing tubing string two ends are provided with fluid erosion prevention screen casing; Multiple second through holes that described fluid erosion prevention screen casing comprises the second base tube and arranges on described base tube; Described second through hole is disposed with from the inside to the outside the second supporting layer, the second filtration beds, the second topping; Described second topping is the topping with calking structure.
In a preferred embodiment, the density of the second through hole on described second base tube is greater than the density of the first through hole on described first base tube.
In a preferred embodiment, the number of described second base tube every meter of second through hole is 2 times of described first base tube every meter of first through hole.
In a preferred embodiment, the second filtration beds of described fluid erosion prevention screen casing is alloy steel layer.
In a preferred embodiment, described fluid erosion prevention screen casing length is 2 meters to 3 meters.
A kind of completion tubular column, comprising:
Oil pipe; The screen casing tubing string be connected with described oil pipe, described screen casing tubing string comprises common screen casing tubing string and is arranged on the fluid erosion prevention screen casing at described common screen casing tubing string two ends; Described common screen casing comprises the first base tube, and multiple first through holes arranged on described base tube, and described first through hole is disposed with the first supporting layer, the first filtration beds, the first topping from the inside to the outside; Multiple second through holes that described fluid erosion prevention screen casing comprises the second base tube and arranges on described base tube, described second through hole is disposed with from the inside to the outside the second supporting layer, the second filtration beds, the second topping, described second topping is the topping with calking structure, the close one end crossing oil pipe of described screen casing tubing string is upper end, and the other end away from oil pipe is bottom; The peripheral position near described screen casing tubing string of described oil pipe is provided with external packer of pipe; Described screen casing tubing string periphery is provided with at least one centralizer; The bottom of described screen casing tubing string is provided with guide shoe; The upper end of described screen casing tubing string or bottom are provided with packing tool.
In a preferred embodiment, the second filtration beds of described fluid erosion prevention screen casing is alloy steel layer.
In a preferred embodiment, described fluid erosion prevention screen casing length is 2 meters to 3 meters.
Feature of the present utility model and advantage are: for SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL tubing string, in gravel-packing process, screen casing tubing string near one end of packing tool the most easily by erosion attack, next is the one end away from packing tool, and the middle part of screen casing tubing string generally erosion attack is less likely to occur.The feature that the utility model destroys for screen cutting in gravel-packing process in horizontal wells, the method that proposing respectively increases by one section of fluid erosion prevention screen casing at common screen casing tubing string two ends solves screen cutting problem.The length of the pipeline section that described screen casing tubing string two ends are easily destroyed is within 2 meters.When the two ends of described screen casing tubing string be provided with 2 meters to 3 meters there is the fluid erosion prevention screen casing 2 of calking structure protective layer after; effectively can not only resist the erosion attack containing sand flow body; and owing to being be connected to the fluid erosion prevention screen casing of 2 meters to 3 meters on existing common screen casing cylinder pile foundation; existing common screen casing tubing string can be effectively used; therefore cost is low, good in economic efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of screen casing tubing string in the utility model embodiment;
Fig. 2 is the partial enlarged drawing of common screen casing in a kind of screen casing tubing string in the utility model embodiment;
Fig. 3 is common screen casing first through hole A-A sectional view in a kind of screen casing tubing string in the utility model embodiment;
Fig. 4 is the partial enlarged drawing of fluid erosion prevention screen casing in a kind of screen casing tubing string in the utility model embodiment;
Fig. 5 is fluid erosion prevention screen casing second through hole B-B sectional view in a kind of screen casing tubing string in the utility model embodiment;
Fig. 6 is that in the utility model embodiment, a kind of screen casing tubing string is applied to the structural representation in horizontal well forward gravel pack completion tubing string;
Fig. 7 is that in the utility model embodiment, a kind of screen casing tubing string is applied to the structural representation in the reverse gravel pack completion tubing string of horizontal well.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is elaborated, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after having read the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model has all fallen in the application's claims limited range.
The utility model provides a kind of screen casing tubing string, for solving in gravel-packing process in horizontal wells screen casing tubing string easily by the problem of erosion attack.
Learn that the mechanism that screen cutting destroys is by analysis and research: gravel pack is to the middle and later periods, and except the top of screen casing tubing string and least significant end, the major part of screen casing tubing string is buried by gravel, and fluid is forced to pass through from screen casing tubing string two ends.Because effective area of passage of screen casing reduces greatly, fluid is sharply increased by the flow velocity at screen casing tubing string two ends.If containing fine grained in gravel, erosion will be caused to screen casing, and this erosive wear is very fast, in a short period of time, just the two ends of screen casing tubing string can be broken through, cause gravel pack failure.Therefore, in gravel-packing process in horizontal wells the two ends of screen casing tubing string the most easily by erosion attack.
Referring to Fig. 1, is screen casing tubing string described in the utility model, it fluid erosion prevention screen casing 2 comprising common screen casing tubing string and be connected to described common screen casing tubing string 1 two ends.
Described common screen casing tubing string can be formed by connecting by many common screen casings 1, and the two ends of common screen casing tubing string are respectively connected with fluid erosion prevention screen casing 2.
Refer to Fig. 2, the structure of described common screen casing 1 is common inserted metal screen structure, and it comprises the first base tube 11, and multiple first through holes 10 arranged on described base tube 11.Refer to Fig. 3, be screen casing first through hole A-A sectional view common in screen casing tubing string a kind of in the utility model embodiment, described first through hole 10 is disposed with the first supporting layer 14, first filtration beds 13, first topping 12 from the inside to the outside.
Refer to Fig. 4, multiple second through holes 20 that described fluid erosion prevention screen casing 2 comprises the second base tube 21 and arranges on described base tube 21.Refer to Fig. 5, be fluid erosion prevention screen casing second through hole B-B sectional view in screen casing tubing string a kind of in the utility model embodiment, described second through hole 20 is disposed with the second supporting layer 24, second filtration beds 23, second topping 22 from the inside to the outside.Described second topping 22 is for having the topping of calking structure, and for the first topping 12 in the first through hole 10 structure of common inserted metal screen screen casing, it can reduce containing sand flow body the direct erosion effect of filtering material.
Described fluid erosion prevention screen casing 2 adds the number of aperture on every meter of base tube for described common screen casing 1 in addition, and the density of the second through hole 20 namely on described fluid erosion prevention screen casing 2 second base tube 21 is greater than the density of the first through hole 10 on described common screen casing 1 first base tube 11.The such as number of described second base tube 21 every meter of second through hole 20 is 2 times of described first base tube 11 every meter of first through hole 10, thus make the area of passage of fluid erosion prevention screen casing 2 be greater than the area of passage of common screen casing 1, thus reduce the flow velocity of fluid by anti-sand erosion screen casing 1, reduce the erosion effect containing sand flow body.
Fluid erosion prevention screen casing 2 length in described SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL fluid erosion prevention screen casing tubing string is 2 meters to 3 meters.
The material that described fluid erosion prevention screen casing 2 adopts scuff resistance high is made, thus further increases the fluid erosion prevention ability of screen casing.Second base tube 21 of such as described fluid erosion prevention screen casing 2 and the second filtration beds 23 are made by alloy steel, have very high intensity and anti-wear performance.
Referring to Fig. 6, is that in the utility model embodiment, a kind of screen casing tubing string is applied to the structural representation in horizontal well forward gravel pack completion tubing string.
Described horizontal well forward gravel pack completion tubing string comprises: screen casing tubing string, centralizer 6, guide shoe 7 that oil pipe 3, external packer of pipe 5, packing tool 3, fluid erosion prevention screen casing 2 form with common screen casing tubing string.
Described oil pipe 3 comprises diameter segment and curved well section;
Described screen casing tubing string is arranged in horizontal well 8 and is connected with described oil pipe 3, and described screen casing tubing string comprises common screen casing tubing string and is arranged on the fluid erosion prevention screen casing 2 at described common screen casing tubing string two ends; The close one end crossing oil pipe 3 of described screen casing tubing string is upper end 2A, and the other end away from oil pipe 3 is bottom 2B.The upper end 2A of described screen casing tubing string is also the one end near horizontal well 8 butt; The bottom 2B of described screen casing tubing string is the one end near horizontal well 8 finger tip.
The peripheral position near described screen casing tubing string of described oil pipe 3 is provided with external packer of pipe 5.
Described screen casing tubing string periphery is provided with at least one centralizer 6.Described centralizer 6 is evenly distributed on the periphery of described screen casing tubing string.
The bottom 2B of described screen casing tubing string is provided with guide shoe 7.
Packing tool 3 is provided with between the upper end 2A and oil pipe 3 of described screen casing tubing string.
During forward gravel pack, load fluid injects from oil pipe 3, and enters the annular space of screen casing tubing string periphery from the packing tool 3 of the upper end 2A being arranged in screen casing tubing string, and flows to the bottom 2B of screen casing tubing string.Due to the leak-off of load fluid and the gravitational settling effect of gravel, gravel deposits, and forms sedimentation equilibrium dike in screen casing tubing string periphery.Along with the continuation of filling, balance dike constantly advances to the bottom 2B of screen casing tubing string, and highly constantly raises.When gravel pack proceeds to the middle and later periods, balance dike having buried screen casing tubing string stage casing completely, fluid is forced to pass through from screen casing tubing string two ends.Because effective area of passage of whole screen casing tubing string reduces greatly, fluid is sharply increased by the flow velocity at screen casing tubing string two ends, thus easily causes the screen casing at screen casing tubing string two ends by erosion attack.Along with gravel pack proceeds, the bottom 2B of screen casing tubing string can bury by balance dike, thus makes to be increased further by the rate of flow of fluid of screen casing tubing string upper end 2A, will aggravate screen casing tubing string upper end 2A erosion attack further.And screen casing tubing string described in the utility model is provided with fluid erosion prevention screen casing 2 at two ends, the erosion attack containing sand flow body effectively can be resisted.And the length of pipeline section that described screen casing tubing string two ends are easily destroyed is within 2 meters.After the two ends of described screen casing tubing string are provided with the fluid erosion prevention screen casing 2 of 2 meters to 3 meters, effectively can not only resist the erosion attack containing sand flow body, and owing to being be connected to the fluid erosion prevention screen casing 2 of 2 meters to 3 meters on existing common screen casing cylinder pile foundation, existing common screen casing tubing string can be effectively used, therefore cost is low, good in economic efficiency.
Referring to Fig. 7, is that in the utility model embodiment, a kind of screen casing tubing string is applied to the structural representation in the reverse gravel pack completion tubing string of horizontal well.
Described horizontal well reverse gravel pack completion tubing string comprises: screen casing tubing string, centralizer 6, packing tool 4, guide shoe 7 that oil pipe 3, external packer of pipe 5, fluid erosion prevention screen casing 2 form with common screen casing tubing string.
Described oil pipe 3 comprises diameter segment and curved well section;
Described screen casing tubing string is arranged in horizontal well 8 and is connected with described oil pipe 3, and described screen casing tubing string comprises common screen casing tubing string and is arranged on the fluid erosion prevention screen casing 2 at described common screen casing tubing string two ends; The close one end crossing oil pipe 3 of described screen casing tubing string is upper end 2A, and the other end away from oil pipe 3 is bottom 2B.The upper end 2A of described screen casing tubing string is also the one end near horizontal well 8 butt; The bottom 2B of described screen casing tubing string is the one end near horizontal well 8 finger tip.
The peripheral position near described screen casing tubing string of described oil pipe 3 is provided with external packer of pipe 5.
Described screen casing tubing string periphery is provided with at least one centralizer 6.Described centralizer 6 is evenly distributed on the periphery of described screen casing tubing string.
The bottom 2B of described screen casing tubing string is provided with guide shoe 7.
Packing tool 3 is provided with between the bottom 2B and described guide shoe 7 of described screen casing tubing string.
During reverse gravel pack, load fluid injects from oil pipe 3, and enters the annular space of screen casing tubing string periphery from the packing tool 3 of the bottom 2B being arranged in screen casing tubing string, and flows to the upper end 2A of screen casing tubing string.Due to the leak-off of load fluid and the gravitational settling effect of gravel, gravel deposits, and forms sedimentation equilibrium dike in screen casing tubing string periphery.Along with the continuation of filling, balance dike constantly advances to the upper end 2A of screen casing tubing string, and highly constantly raises.When gravel pack proceeds to the middle and later periods, balance dike having buried screen casing tubing string stage casing completely, fluid is forced to pass through from screen casing tubing string two ends.Because effective area of passage of whole screen casing tubing string reduces greatly, fluid is sharply increased by the flow velocity at screen casing tubing string two ends, thus easily causes the screen casing at screen casing tubing string two ends by erosion attack.Along with gravel pack proceeds, the upper end 2A of screen casing tubing string can bury by balance dike, thus makes to be increased further by the rate of flow of fluid of screen casing tubing string bottom 2B, will aggravate screen casing tubing string bottom 2B erosion attack further.And screen casing tubing string described in the utility model is provided with fluid erosion prevention screen casing 2 at two ends, the erosion attack containing sand flow body effectively can be resisted.And the length of pipeline section that described screen casing tubing string two ends are easily destroyed is within 2 meters.After the two ends of described screen casing tubing string are provided with the fluid erosion prevention screen casing 2 of 2 meters to 3 meters, effectively can not only resist the erosion attack containing sand flow body, and owing to being be connected to the fluid erosion prevention screen casing 2 of 2 meters to 3 meters on existing common screen casing cylinder pile foundation, existing common screen casing tubing string can be effectively used, therefore cost is low, good in economic efficiency.
For SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL tubing string, in gravel-packing process, screen casing tubing string the most easily by erosion attack, be secondly the one end away from packing tool 4, and the middle part of screen casing tubing string generally erosion attack is less likely to occur in the one end near packing tool 4.The feature that the utility model destroys for screen cutting in gravel-packing process in horizontal wells, the method that proposing respectively increases by one section of fluid erosion prevention screen casing at common screen casing tubing string two ends solves screen cutting problem.The length of the pipeline section that described screen casing tubing string two ends are easily destroyed is within 2 meters.When the two ends of described screen casing tubing string be provided with 2 meters to 3 meters there is the fluid erosion prevention screen casing 2 of calking structure protective layer after; effectively can not only resist the erosion attack containing sand flow body; and owing to being be connected to the fluid erosion prevention screen casing 2 of 2 meters to 3 meters on existing common screen casing cylinder pile foundation; existing common screen casing tubing string can be effectively used; therefore cost is low, good in economic efficiency.
The foregoing is only several embodiment of the present utility model, although the embodiment disclosed by the utility model as above, the embodiment that described content just adopts for the ease of understanding the utility model, is not intended to limit the utility model.Any the utility model person of ordinary skill in the field; under the prerequisite not departing from the spirit and scope disclosed by the utility model; any amendment and change can be done on the formal of embodiment and details; but scope of patent protection of the present utility model, the scope that still must define with appended claims is as the criterion.
Claims (8)
1. a screen casing tubing string, described screen casing tubing string comprises many common screen casings, described common screen casing comprises the first base tube, and multiple first through holes arranged on described base tube, described first through hole is disposed with the first supporting layer, the first filtration beds, the first topping from the inside to the outside, described many common screen casings are in turn connected to form common screen casing tubing string, it is characterized in that: described common screen casing tubing string two ends are provided with fluid erosion prevention screen casing; Multiple second through holes that described fluid erosion prevention screen casing comprises the second base tube and arranges on described base tube; Described second through hole is disposed with from the inside to the outside the second supporting layer, the second filtration beds, the second topping; Described second topping is the topping with calking structure.
2. screen casing tubing string as claimed in claim 1, is characterized in that: the density of the second through hole on described second base tube is greater than the density of the first through hole on described first base tube.
3. screen casing tubing string as claimed in claim 2, is characterized in that: the number of described second base tube every meter of second through hole is 2 times of described first base tube every meter of first through hole.
4. screen casing tubing string as claimed in claim 1, is characterized in that: the second filtration beds of described fluid erosion prevention screen casing is alloy steel layer.
5. screen casing tubing string as claimed in claim 1, is characterized in that: described fluid erosion prevention screen casing length is 2 meters to 3 meters.
6. a completion tubular column, is characterized in that, comprising:
Oil pipe;
The screen casing tubing string be connected with described oil pipe, described screen casing tubing string comprises common screen casing tubing string and is arranged on the fluid erosion prevention screen casing at described common screen casing tubing string two ends;
Described common screen casing comprises the first base tube, and multiple first through holes arranged on described base tube, and described first through hole is disposed with the first supporting layer, the first filtration beds, the first topping from the inside to the outside;
Multiple second through holes that described fluid erosion prevention screen casing comprises the second base tube and arranges on described base tube, described second through hole is disposed with from the inside to the outside the second supporting layer, the second filtration beds, the second topping, described second topping is the topping with calking structure, the close one end crossing oil pipe of described screen casing tubing string is upper end, and the other end away from oil pipe is bottom;
The peripheral position near described screen casing tubing string of described oil pipe is provided with external packer of pipe;
Described screen casing tubing string periphery is provided with at least one centralizer;
The bottom of described screen casing tubing string is provided with guide shoe;
The upper end of described screen casing tubing string or bottom are provided with packing tool.
7. completion tubular column as claimed in claim 6, is characterized in that: the second filtration beds of described fluid erosion prevention screen casing is alloy steel layer.
8. completion tubular column as claimed in claim 6, is characterized in that: described fluid erosion prevention screen casing length is 2 meters to 3 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420650038.9U CN204283370U (en) | 2014-11-03 | 2014-11-03 | Screen casing tubing string and completion tubular column thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420650038.9U CN204283370U (en) | 2014-11-03 | 2014-11-03 | Screen casing tubing string and completion tubular column thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283370U true CN204283370U (en) | 2015-04-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420650038.9U Expired - Fee Related CN204283370U (en) | 2014-11-03 | 2014-11-03 | Screen casing tubing string and completion tubular column thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204283370U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889603A (en) * | 2018-07-18 | 2018-11-27 | 新乡市高服机械股份有限公司 | A kind of New Hydrogen fluoric acid Special screen |
| CN109915087B (en) * | 2019-04-01 | 2021-04-30 | 中煤科工集团西安研究院有限公司 | Subsection large-diameter sieve tube in coal mine underground directional long drill hole and running method thereof |
-
2014
- 2014-11-03 CN CN201420650038.9U patent/CN204283370U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889603A (en) * | 2018-07-18 | 2018-11-27 | 新乡市高服机械股份有限公司 | A kind of New Hydrogen fluoric acid Special screen |
| CN108889603B (en) * | 2018-07-18 | 2024-02-20 | 新乡市高服机械股份有限公司 | Novel hydrofluoric acid special screen |
| CN109915087B (en) * | 2019-04-01 | 2021-04-30 | 中煤科工集团西安研究院有限公司 | Subsection large-diameter sieve tube in coal mine underground directional long drill hole and running method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |