CN203488110U - Layered sand blocking simultaneous-extraction tubular column - Google Patents
Layered sand blocking simultaneous-extraction tubular column Download PDFInfo
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- CN203488110U CN203488110U CN201320517784.6U CN201320517784U CN203488110U CN 203488110 U CN203488110 U CN 203488110U CN 201320517784 U CN201320517784 U CN 201320517784U CN 203488110 U CN203488110 U CN 203488110U
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- tubing string
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- tubular column
- layering
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Abstract
The utility model relates to a layered sand blocking simultaneous-extraction tubular column which overcomes the shortcoming that in the prior art, interlayer interference is serious, sand blocking and sand burying of an oil well occurs, and then oil extraction cannot be carried out smoothly. The layered sand blocking simultaneous-extraction tubular column comprises an upper packer, a safety connector I, a sieve tube I, a safety connector II, a lower packer, a safety connector III, a sieve tube II and a screw plug which are fixedly connected through oil tubes sequentially from top to bottom. An upper sealing work cylinder is fixedly arranged between the sieve tube I and the safety connector II of the layered tubular column, a lower sealing work cylinder is fixedly arranged between the safety connector III and the sieve tube II, and the inner diameters of the upper sealing work cylinder and the lower sealing work cylinder are smaller than those of the oil tubes. A hollow sealing tube is fixedly arranged at the lower end of a layered mining pump of a lifting tubular column, the lower end of the hollow sealing tube is always matched with the inner hole of the hollow sealing tube, and the hollow sealing tube and a layered tubular column inner hole above the upper sealing work cylinder form an annulus. The layered sand blocking simultaneous-extraction tubular column has the advantages of being reasonable in structural design, and capable of avoiding the interlayer interference and effectively increasing well yield of a sandy well and production time efficiency.
Description
Technical field
The utility model relates to a kind of crude oil production separate-layer production string, especially relates to a kind of layering sand block with adopting tubing string.
Background technology
Oil field geologic complex structure, there is the problems such as oil well production well segment length, series of strata are many, the reservoir coefficient of variation is high, comprehensive water cut is high in most blocks, makes serious interlayer interference, and oil extraction difficulty is large.By studying for interlayer interference problem, formed different layering oil production technology, obtained effect significantly, but for sand well, within existing minute, adopt technique table and reveal inadaptability, main manifestations is that sand card, sand plug, sand bury seriously, causes recovering the oil and produces and can not carry out smoothly.In the urgent need to a kind of, can effectively employ each oil reservoir at present, and can avoid interlayer interference, can prevent that again layering that sand card, sand plug, sand buries from, with adopting technology, fully excavating oil well productivity, improve oil well output, improve exploitation timeliness.
Utility model content
In order to overcome sand card, sand plug, the sand of existing serious interlayer interference oil well, bury phenomenon, cause recovering the oil and produce and can not carry out smoothly, minute technology of adopting can not meet the deficiency of exploitation needs, and the utility model provides a kind of layering sand block with adopting tubing string.
The utility model solves the technical scheme that its technical problem adopts: layering sand block comprises layering tubing string, lifting tubing string with adopting tubing string, layering tubing string comprises packer, safety joint, screen casing, plug, oil pipe, oil extraction pump in lifting tubing string is layered oil pump, and layering tubing string upper packer, safety joint I, screen casing I, upper seal operation cylinder, safety joint II, lower packet, safety joint III, lower seal seating nipple, screen casing II, plug are from top to bottom fixedly connected sequentially by oil pipe; Upper packer is positioned at the top of oil reservoir, and lower packet is between upper oil reservoir and lower oil reservoir; Screen casing I is positioned at oil reservoir, and screen casing II is positioned at lower oil reservoir; The internal diameter of upper seal operation cylinder, lower seal seating nipple is less than pipe aperture.The layered oil pump lower end of lifting tubing string is installed with hollow seal pipe, the lower end of hollow seal pipe coordinates with upper seal operation cylinder endoporus all the time, the layering tubing string endoporus of hollow seal pipe and upper seal operation cylinder top forms annular space, and annular space is communicated with the pump barrel chamber at eccentric valve place in layered oil pump.
The beneficial effects of the utility model are, reasonable in design, can avoid interlayer interference, effectively improves well yield and the production timeliness of sand well, avoid occurring sand card, sand bury cannot upper lifting pipe post problem, the oil recovery that is particularly useful for sand well is produced.
Accompanying drawing explanation
Fig. 1 is that the utility model layering sand block is with the structural representation of adopting tubing string.
In figure: 1. layered oil pump, 2. hollow seal pipe, 3. upper packer, 4. safety joint I, 5. screen casing I, 6. goes up seal operation cylinder, 7. safety joint II, 8. lower packet, 9. safety joint III, 10. lower seal seating nipple, 11. screen casing II, 12. plugs, 13. annular spaces, oil reservoir on 100., 200. times oil reservoirs.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.But those skilled in the art should know, the invention is not restricted to the listed specific embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.
Referring to accompanying drawing 1.The utility model layering sand block, with adopting tubing string, comprises layering tubing string, lifting tubing string, and layering tubing string is fixed in pit shaft; Lifting tubing string is connected to the lower end of sucker rod, along the layering tubing string in pit shaft, moves reciprocatingly.
The upper packer 3 of layering tubing string, safety joint I 4, screen casing I 5, upper seal operation cylinder 6, safety joint II 7, lower packet 8, safety joint III 9, lower seal seating nipple 10, screen casing II 11, plug 12 are from top to bottom fixedly connected sequentially by oil pipe, upper packer 3 is positioned at the top of oil reservoir 100, lower packet 8, between upper oil reservoir 100 and lower oil reservoir 200, is separated upper oil reservoir 100 and lower oil reservoir 200; Screen casing I 5 is positioned at oil reservoir 100, and screen casing II 11 is positioned at lower oil reservoir.The internal diameter of upper seal operation cylinder 6, lower seal seating nipple 10 is less than pipe aperture.
The two ends of upper seal operation cylinder 6 are fixedly connected with screen casing I 5, safety joint II 7 respectively; Or the two ends of upper seal operation cylinder 6 are fixedly connected with oil pipe respectively; Or one end of upper seal operation cylinder 6 is fixedly connected with screen casing I 5/ safety joint II 7, the other end is fixedly connected with oil pipe.
The oil extraction pump lower end of lifting tubing string is installed with hollow seal pipe 2, and the lower end of hollow seal pipe 2 coordinates with upper seal operation cylinder 6 endoporus all the time, and hollow seal pipe 2 forms annular space 13 with the layering tubing string endoporus of upper seal operation cylinder 6 tops.
The oil extraction pump of lifting tubing string is selected layered oil pump 1.Layered oil pump 1 has 2 fluid courses, one is the axis fluid course along pump, another is eccentric fluid course, as disclosed Chinese utility model patent < < oil well layered oil well pump > > on March 5th, 2003.The utility model layering sand block is communicated with the pump barrel chamber at eccentric valve place in layered oil pump 1 by eccentric valve with the annular space 13 of adopting in tubing string.
The utility model layering sand block is as follows with adopting the tubing string specific embodiment:
First, according to technological design, layering sand block is assembled successively with each parts of layering tubing string of adopting tubing string complete, by carrying tubing string that layering tubing string is lowered to predetermined well depth, by the setting kit of special use, upper packer 3, lower packet 8 is setting; Then, suppress and make to carry tubing string and layering tubing string to depart from, propose to carry tubing string.
Secondly, the hollow seal pipe of layered oil pump 1 lower end 2 is inserted in upper seal operation cylinder 6, by sucker rod, drive layered oil pump 1 and hollow seal pipe 2 to pump along layering tubing string.During upstroke, the crude oil of upper oil reservoir 100 enters layered oil pump 1 through hollow seal pipe 2 and the annular space 13 of layering tubing string; During down stroke, the crude oil of lower oil reservoir 200 enters layered oil pump 1 through hollow seal pipe 2 endoporus, realizes layering with adopting.
In process of production, when upper oil reservoir 100 shake out seriously cause screen casing I 5 sand bury cannot on while carrying layering tubing string, can disconnect tubing strings by safety joint I 4, screen casing I 5 is implemented to cover millings, then fishing string, realizes unfreezing.Instantly oil reservoir 200 shake out seriously cause screen casing II 11 sand bury cannot on while carrying layering tubing string, can disconnect tubing strings by safety joint III 9, screen casing II 11 is implemented to cover millings, then fishing string, realizes unfreezing.The utility model layering sand block affect the problem of output with adopting tubing string for the serious and oil reservoir interlayer interference of shaking out, can avoid interlayer interference can prevent again sand card tubing string, realizes the raising well yield of sand well and the object of production timeliness.
It should be noted that above-described embodiment is example and unrestricted the utility model, those skilled in the art can design a lot of alternate embodiments and not depart from the claim scope of this patent.
Claims (1)
1. a layering sand block is with adopting tubing string, comprise layering tubing string, lifting tubing string, layering tubing string comprises packer, safety joint, screen casing, plug, oil pipe, oil extraction pump in lifting tubing string is layered oil pump, it is characterized in that: upper packer (3), safety joint I (4), screen casing I (5), upper seal operation cylinder (6), safety joint II (7), lower packet (8), safety joint III (9), lower seal seating nipple (10), screen casing II (11), plug (12) are from top to bottom fixedly connected sequentially by oil pipe; Upper packer (3) is positioned at the top of oil reservoir (100), and lower packet (8) is positioned between oil reservoir (100) and lower oil reservoir (200); Screen casing I (5) is positioned at oil reservoir (100), and screen casing II (11) is positioned at lower oil reservoir (200); The internal diameter of described upper seal operation cylinder (6), lower seal seating nipple (10) is less than pipe aperture;
The layered oil pump of described lifting tubing string (1) lower end is installed with hollow seal pipe (2), the lower end of hollow seal pipe (2) coordinates with upper seal operation cylinder (6) endoporus all the time, hollow seal pipe (2) forms annular space (13) with the layering tubing string endoporus of upper seal operation cylinder (6) top, and annular space (13) is communicated with the pump barrel chamber at eccentric valve place in layered oil pump (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320517784.6U CN203488110U (en) | 2013-08-23 | 2013-08-23 | Layered sand blocking simultaneous-extraction tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320517784.6U CN203488110U (en) | 2013-08-23 | 2013-08-23 | Layered sand blocking simultaneous-extraction tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203488110U true CN203488110U (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320517784.6U Withdrawn - After Issue CN203488110U (en) | 2013-08-23 | 2013-08-23 | Layered sand blocking simultaneous-extraction tubular column |
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| CN (1) | CN203488110U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420834A (en) * | 2013-08-23 | 2015-03-18 | 天津大港油田钻采技术开发公司 | Separate-layer sand blocking simultaneous production pipe string |
| CN105370239A (en) * | 2014-08-26 | 2016-03-02 | 天津大港油田钻采技术开发公司 | Hydraulic-set separate-layer simultaneous-extraction string |
-
2013
- 2013-08-23 CN CN201320517784.6U patent/CN203488110U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420834A (en) * | 2013-08-23 | 2015-03-18 | 天津大港油田钻采技术开发公司 | Separate-layer sand blocking simultaneous production pipe string |
| CN104420834B (en) * | 2013-08-23 | 2017-03-29 | 天津大港油田钻采技术开发公司 | Layering sand block is same to adopt tubing string |
| CN105370239A (en) * | 2014-08-26 | 2016-03-02 | 天津大港油田钻采技术开发公司 | Hydraulic-set separate-layer simultaneous-extraction string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140319 Effective date of abandoning: 20170329 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140319 Effective date of abandoning: 20170329 |