CN204457576U - Mechanical water plugging pipe string - Google Patents
Mechanical water plugging pipe string Download PDFInfo
- Publication number
- CN204457576U CN204457576U CN201520023118.6U CN201520023118U CN204457576U CN 204457576 U CN204457576 U CN 204457576U CN 201520023118 U CN201520023118 U CN 201520023118U CN 204457576 U CN204457576 U CN 204457576U
- Authority
- CN
- China
- Prior art keywords
- oil pipe
- pipe
- packer
- mechanical water
- water plugging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000003129 oil well Substances 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 238000011010 flushing procedure Methods 0.000 abstract description 7
- 230000008021 deposition Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Abstract
The utility model provides a kind of mechanical water plugging pipe string, be located in sleeve pipe, this mechanical water plugging pipe string comprises outer tubing string and internal layer oil pipe, outer tubing string comprises the variable buckle screen casing, the first packer, outer oil pipe and the second packer that connect successively from top to bottom, and the sidewall of variable buckle screen casing is provided with through hole; Internal layer oil pipe is arranged in outer tubing string, forms the annular space be connected with through hole between internal layer oil pipe with outer tubing string; Casing annulus above first packer is upper sleeve annular space, casing annulus below second packer is bottom casing annulus, annular space and through hole form the circulation passage between upper sleeve annular space and bottom casing annulus, downhole gas can enter upper sleeve annular space via this circulation passage and discharge, and carry out the routine such as well-flushing, wax removal via this circulation passage and produce, the production difficult problem such as effectively solve gas lock, wax deposition that thin oil well often occurs, can not clean.
Description
Technical field
The utility model relates to a kind of flow string, especially a kind of mechanical water plugging pipe string for thin oil exploitation.
Background technology
Along with oil field development enters the middle and later periods, interlayer contradiction is given prominence to, and some oil wells enters the High water cut stage, and particularly thin oil well moisture content raises year by year.Adopt conventional mechanical water-plugging technique that moisture content is necessarily controlled, but for part fluid supply capacity deficiency, tie cured, that gas lock phenomenon is serious high-water-cut oil-producing well, because fluid supply capacity is not enough, liquid level is low, oil well pump must down to oil reservoir middle and lower part, such water pack off can only adopt closed pipe rod structure, after shutoff, oil jacket annular space is not communicated with, oil reservoir gas is so just caused to arrange outward, after producing a period of time, gas is just piled up at oil reservoir, and pressure raises, producing pressure differential reduces, and reservoir productivity is suppressed; And a large amount of gas also can have an impact to pumping efficiency of oil pump in process of production, gas lock phenomenon is serious, causes oil well pump normally to work; In addition, closed water plugging string does not have well-flushing passage, and cannot complete the routine such as well-flushing, wax removal and produce ancillary method in oil well production process, wax can enter pump barrel, sucker rod load is increased, affects pump efficiency, and holddown can be caused time serious to produce.
Utility model content
The purpose of this utility model is to provide a kind of mechanical water plugging pipe string, to solve the problem such as gas lock, wax deposition that conventional water blockoff exists.
For achieving the above object, the utility model proposes a kind of mechanical water plugging pipe string, be located in sleeve pipe, described mechanical water plugging pipe string comprises: outer tubing string, it comprises the variable buckle screen casing, the first packer, outer oil pipe and the second packer that connect successively from top to bottom, and the sidewall of described variable buckle screen casing is radially provided with through hole; Internal layer oil pipe, is arranged in described outer tubing string, forms the annular space be connected with described through hole between described internal layer oil pipe with described outer tubing string; Wherein, casing annulus above described first packer is upper sleeve annular space, casing annulus below described second packer is bottom casing annulus, and described annular space and described through hole form the circulation passage between described upper sleeve annular space and described bottom casing annulus.
Mechanical water plugging pipe string as above, wherein, is connected with production screen below described internal layer oil pipe, is provided with the oil well pump be connected with described internal layer oil pipe in described production screen.
Mechanical water plugging pipe string as above, wherein, the bottom of described production screen connects plug.
Mechanical water plugging pipe string as above, wherein, the upper end of described internal layer oil pipe is connected with interior button of described variable buckle screen casing, and described first packer is connected with the outer button of described variable buckle screen casing.
Mechanical water plugging pipe string as above, wherein, is also connected with the first oil pipe above described variable buckle screen casing.
Mechanical water plugging pipe string as above, wherein, the diameter of described first oil pipe is 88.9mm, and the diameter of described outer oil pipe is 88.9mm, and the diameter of described internal layer oil pipe is 60mm.
Mechanical water plugging pipe string as above, wherein, described internal layer oil pipe is integral joint tubing.
Mechanical water plugging pipe string as above, wherein, the internal diameter of described oil well pump is 38mm, and the external diameter of described oil well pump is 73mm.
Feature and the advantage of mechanical water plugging pipe string of the present utility model are: it is provided with bimetallic tube rod structure, the annular space passed through for fluid is formed between internal layer oil pipe and outer tubing string, the variable buckle screen casing of outer tubing string is provided with through hole, annular space is connected with through hole, by under mechanical water plugging pipe string of the present utility model to after wet well section, on put and put tubing string and make the first packer and the second packer setting, with closed wet well section, now, bottom casing annulus below second packer is just by annular space and through hole, realize being connected with the upper sleeve annular space above the first packer, such downhole gas just can via annular space, through hole enters upper sleeve annular space and discharges, and can well-flushing be carried out, the routine such as wax removal is produced, the gas lock that effective solution thin oil well often occurs, wax deposition, the production difficult problem such as can not to clean.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the schematic diagram of mechanical water plugging pipe string of the present utility model.
Critical element label declaration:
1 first oil pipe
2 variable buckle screen casing 21 through holes
The outer oil pipe of 3 first packer 4
5 internal layer oil pipe 6 second packers
7 oil well pumps
8 production screen 81 plugs
9 sleeve pipe 91 upper sleeve annular spaces
92 bottom casing annuluss
10 annular spaces
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model is described.
As shown in Figure 1, the utility model provides a kind of mechanical water plugging pipe string, be located in sleeve pipe 9, this mechanical water plugging pipe string is bimetallic tube rod structure, comprise outer tubing string and internal layer oil pipe 5, outer tubing string comprises variable buckle screen casing 2, first packer 3 connected successively, outer oil pipe 4 and the second packer 6 from top to bottom, first packer 3, outer oil pipe 4 and the corresponding wet well section of the second packer 6, the sidewall of variable buckle screen casing 2 radially runs through and has through hole 21, multiple through hole 21 can be set along the axis of variable buckle screen casing; Internal layer oil pipe 5 is arranged in outer tubing string, forms the annular space 10 be connected with through hole 21 between internal layer oil pipe 5 with outer tubing string; Wherein, the casing annulus above the first packer is the casing annulus below upper sleeve annular space 91, second packer is bottom casing annulus 92, and annular space 10 and through hole 21 form the circulation passage between upper sleeve annular space 91 and bottom casing annulus 92.
When adopting mechanical water plugging pipe string shutoff wet well section of the present utility model, by under it after design attitude, on put and put tubing string the first packer 3 and the second packer 6 are set, first packer 3 and the second packer 6 shutoff wet well section, and casing annulus is divided into the upper sleeve annular space 91 be positioned at above the first packer 3 and the bottom casing annulus 92 be positioned at below the second packer 6, because the utility model is bimetallic tube rod structure, annular space 10 between two-layer tubular column structure, and the through hole 21 on variable buckle screen casing 2 just forms the communicating passage between upper sleeve annular space 91 and bottom casing annulus 92, downhole gas is discharged by this communicating passage, simultaneously, also well-flushing can be carried out by this communicating passage, the routine such as wax removal produces ancillary method, efficiently solve thin oil well gas lock, wax deposition, can not the production difficult problem such as well-flushing.
In a specific embodiment, be connected with production screen 8 below internal layer oil pipe 5, for sand control, production screen is provided with fuel feed hole, is provided with the oil well pump 7 be connected with internal layer oil pipe in production screen 8.The bimetallic tube rod structure adopted due to the utility model solves air-lock problem, thus extends pump detection period, improves the production time efficiency of pump efficiency and oil well, saves operating cost; Due to can well-flushing, wax removal be carried out, wax can be avoided to enter pump barrel.
Wherein, internal layer oil pipe 5 is preferably integral joint tubing, remove speed fast, convenient operation, and it takes up room, and ensure that the complete and unimpeded of annular space 10 little.
In a preferred technical scheme, oil well pump 7 adopts little external diameter oil well pump, and the internal diameter of oil well pump is 38mm, the external diameter of oil well pump is 73mm, by adopting little external diameter oil well pump, pump can be realized and produced, meet oil well need deepen pump extension needs of production because liquid level is low.
Wherein, the bottom of production screen 8 is also connected with plug 81, for the end of shutoff production screen.
As shown in Figure 1, the upper end of internal layer oil pipe 5 is connected with interior button of variable buckle screen casing 2, and the first packer 3 is connected with the outer button of variable buckle screen casing 2.
Wherein, the first oil pipe 1 is also connected with above variable buckle screen casing 2.
In the present embodiment, the diameter of the first oil pipe 1 is 88.9mm, and the diameter of outer oil pipe 4 is 88.9mm, and the diameter of internal layer oil pipe 5 is 60mm, is convenient to rountrip, and makes overall structure compacter.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.And it should be noted that, each ingredient of the present utility model is not limited in above-mentioned overall applicability, the each technical characteristic described in manual of the present utility model can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the utility model covers other relevant with this case inventive point in the nature of things and combines and embody rule.
Claims (8)
1. a mechanical water plugging pipe string, is located in sleeve pipe, it is characterized in that, described mechanical water plugging pipe string comprises:
Outer tubing string, it comprises the variable buckle screen casing, the first packer, outer oil pipe and the second packer that connect successively from top to bottom, and the sidewall of described variable buckle screen casing is provided with through hole;
Internal layer oil pipe, is arranged in described outer tubing string, forms the annular space be connected with described through hole between described internal layer oil pipe with described outer tubing string;
Wherein, casing annulus above described first packer is upper sleeve annular space, casing annulus below described second packer is bottom casing annulus, and described annular space and described through hole form the circulation passage between described upper sleeve annular space and described bottom casing annulus.
2. mechanical water plugging pipe string as claimed in claim 1, is characterized in that, be connected with production screen below described internal layer oil pipe, be provided with the oil well pump be connected with described internal layer oil pipe in described production screen.
3. mechanical water plugging pipe string as claimed in claim 2, is characterized in that, the bottom of described production screen connects plug.
4. mechanical water plugging pipe string as claimed in claim 1, it is characterized in that, the upper end of described internal layer oil pipe is connected with interior button of described variable buckle screen casing, and described first packer is connected with the outer button of described variable buckle screen casing.
5. mechanical water plugging pipe string as claimed in claim 1, is characterized in that, be also connected with the first oil pipe above described variable buckle screen casing.
6. mechanical water plugging pipe string as claimed in claim 5, it is characterized in that, the diameter of described first oil pipe is 88.9mm, and the diameter of described outer oil pipe is 88.9mm, and the diameter of described internal layer oil pipe is 60mm.
7. mechanical water plugging pipe string as claimed in claim 1, it is characterized in that, described internal layer oil pipe is integral joint tubing.
8. mechanical water plugging pipe string as claimed in claim 2, it is characterized in that, the internal diameter of described oil well pump is 38mm, and the external diameter of described oil well pump is 73mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520023118.6U CN204457576U (en) | 2015-01-14 | 2015-01-14 | Mechanical water plugging pipe string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520023118.6U CN204457576U (en) | 2015-01-14 | 2015-01-14 | Mechanical water plugging pipe string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457576U true CN204457576U (en) | 2015-07-08 |
Family
ID=53664478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520023118.6U Expired - Fee Related CN204457576U (en) | 2015-01-14 | 2015-01-14 | Mechanical water plugging pipe string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457576U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071376A (en) * | 2016-11-17 | 2018-05-25 | 中国石油天然气股份有限公司 | A kind of injection-production column jacket in coal bed gas well |
| CN110924903A (en) * | 2019-12-06 | 2020-03-27 | 中国石油集团渤海钻探工程有限公司 | Selective plugging process pipe column for screen pipe well completion |
-
2015
- 2015-01-14 CN CN201520023118.6U patent/CN204457576U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108071376A (en) * | 2016-11-17 | 2018-05-25 | 中国石油天然气股份有限公司 | A kind of injection-production column jacket in coal bed gas well |
| CN110924903A (en) * | 2019-12-06 | 2020-03-27 | 中国石油集团渤海钻探工程有限公司 | Selective plugging process pipe column for screen pipe well completion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |