CN200978659Y - Sulfur-separating sand filter - Google Patents
Sulfur-separating sand filter Download PDFInfo
- Publication number
- CN200978659Y CN200978659Y CN 200620148045 CN200620148045U CN200978659Y CN 200978659 Y CN200978659 Y CN 200978659Y CN 200620148045 CN200620148045 CN 200620148045 CN 200620148045 U CN200620148045 U CN 200620148045U CN 200978659 Y CN200978659 Y CN 200978659Y
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- CN
- China
- Prior art keywords
- sand screen
- isocon
- sand
- wiper block
- shunting
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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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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A diverting sand shaker relates to a horizontal well construction operation technique in oil exploration and development. To overcome the shortage existed in sand shaker direct sand-protecting art such as metal cotton and metal felt, an oil-pipe (7) outer surface of the utility model is sequentially arranged with an angle connecting board (2), an upper sand shaker (4), an off-center stabilizer (5), a lower sand shaker (6), an off-center stabilizer (5) and an angle connecting board (2) from top to down. The angle connecting board (2) is fixedly connected with the oil-pipe (7), a diverting pipe (10) is fixedly arranged on the angle connecting board (2), the diverting pipe (10) is positioned at the flank of a stabilizing block I (11), a spout is provided on the diverting pipe (10). In gravel filling construction process, after the sand shaker filling passage forms a sand bridge, the sand-laden fluid can open the diverting pipe passage and carry the gravel to evade sand-hillocks and continue gravel filling operation, thereby the filling quality in horizontal well gravel filling operation is guaranteed.
Description
Technical field
The utility model relates to petroleum exploration and development cobblestone filling anti-sand construction operation technology, particularly relates to a kind of shunting sand screen of SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL sand control.
Background technology
Gravel filling sand prevention process is widely used in the straight well sand control treatment, is the anti-sand process technology of a comparative maturity.In recent years, the SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL sand control is for prolonging a kind of new technology that horizontal well sand control useful life grows up.Because the gravel slumping rule in horizontal well is different from straight well, and because the well segment length, the load fluid leak-off is serious, is easy to too early sand fallout and forms sand bridge, cause the sand control treatment failure, so the application of gravel filling sand prevention process in horizontal well is restricted.At present, most of horizontal well adopts the direct sand controls of sand screen such as metal wool, metal felt, and is blocked easily at production period, cause the sand control life short, stop up back de-plugging difficulty, the measure cost height, it is long to take the production time, has seriously influenced the effect of horizontal well in exploration and development.
The utility model content
The purpose of this utility model is in order to overcome the easy obstruction that horizontal well adopts the direct sand-preventing process of sand screens such as metal wool, metal felt to exist, sand control life is short, stops up back de-plugging difficulty, the measure cost height, take deficiencies such as production time length, a kind of shunting sand screen is provided.
In order to achieve the above object, the utility model shunting sand screen comprises oil pipe, sand screen, centralizer, top connection, lower contact, the external surface of oil pipe be equipped with successively from top to bottom angle connecting board, on sand screen, eccentric centralizer, sand screen, eccentric centralizer and angle connecting board down.4 wiper blocks of eccentric centralizer are uniform vertically, wiper block II and wiper block IV positioned opposite, and equal in length; Wiper block I and wiper block III positioned opposite, the length of wiper block I is greater than the length of wiper block III.Angle connecting board is fixedlyed connected with oil pipe, is installed with isocon on the angle connecting board, and isocon is positioned at the side of wiper block I, and nozzle is arranged on the isocon.Isocon is that cross section is rectangular tubing, and fixedlying connected with angle connecting board in one of them long limit, has 1 nozzle on the minor face of left side at least; Nozzle is arranged in order along the isocon length direction, adjacent 2 nozzles be spaced apart 1.8～2.6m.Isocon is 2, lays respectively at the wiper block I both sides of eccentric centralizer, with the angle α of wiper block I be 33 °～42 °.Eccentric centralizer is fixedlyed connected with oil pipe.Fixedlying connected with the lower end of last sand screen in the upper end of the eccentric centralizer between last sand screen and following sand screen, fixedlys connected with the upper end of following sand screen in the lower end.The upper end of oil pipe is equipped with seal nipple, and the lower end is equipped with the lower seal joint, and adopts the cone seal form.Lower contact is connected with isocon with the isocon top connection respectively at the two ends up and down of isocon, and the plug-in type mode that is tightly connected is adopted in isocon top connection and isocon lower contact.During installation, isocon and last seal nipple are not contour on axial location.
The beneficial effect of the utility model shunting sand screen is, in carrying out the gravel pack work progress, after sand screen master filling passage formed sand bridge, load fluid can be opened the isocon passage, carry gravel and walk around sand-flood and proceed the gravel pack operation, thereby guarantee the SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL operation quality.
Description of drawings
Fig. 1 is the utility model shunting sand screen structural representation.
Fig. 2 is the A-A of an angle connecting board place sectional drawing among Fig. 1.
Fig. 3 is the eccentric centralizer B-B of a place sectional drawing among Fig. 1.
Fig. 4 is nozzle cage and isocon connection diagram.
Among the figure: 1. go up seal nipple, 2. angle connecting board, 3. nozzle, 4. go up sand screen, 5. eccentric centralizer 6. descends sand screen, 7. oil pipe, 8. lower seal joint, 9. sealing ring, 10. isocon, 11. wiper block I, 12. wiper block II, 13. wiper block III, 14. wiper block IV, 15. isocon top connections, 16. the isocon lower contact, 17. nozzle cages.
The specific embodiment
With reference to accompanying drawing 1.The utility model shunting sand screen, be equipped with successively from top to bottom on the external surface of oil pipe 7 angle connecting board 2, on sand screen 4, eccentric centralizer 5, sand screen 6, eccentric centralizer 5 and angle connecting board 2 down.Angle connecting board 2, eccentric centralizer 5 are fixedlyed connected with oil pipe 7.Fixedly connected with the lower end of last sand screen 4 in the upper end of the eccentric centralizer 5 between last sand screen 4 and the following sand screen 6, fixedlying connected with the upper end of following sand screen 6 in the lower end, adopts welding manner fixedly connected usually.Gapped between the angle connecting board 2 of the upper end of last sand screen 4 and its top; Gapped between the eccentric centralizer 5 of the lower end of following sand screen 6 and its below.Between the upper end endoporus of last sand screen 4 and the lower end endoporus of following sand screen 6 and the oil pipe external surface sealing ring 9 is installed.
With reference to accompanying drawing 3.Eccentric centralizer 5 has 4 wiper blocks, and 4 wiper blocks are uniformly distributed along the circumference.Wiper block II 12 and wiper block IV 14 positioned opposite, and equal in length; Wiper block I 11 and wiper block III 13 positioned opposite, the length of wiper block I 11 is greater than the length of wiper block III 13, and its difference is 2～4mm.
With reference to accompanying drawing 1, accompanying drawing 2 and accompanying drawing 4.Be installed with isocon 10 on the angle connecting board 2.Isocon 10 is that cross section is rectangular tubing, and fixedly connected with angle connecting board 2 in one of them long limit, nozzle 3 is arranged on the minor face of left side.Isocon 10 is positioned at the side of the wiper block I 11 of eccentric centralizer 5.Isocon 10 is generally 2, lays respectively at the both sides of wiper block I 11, with the angle α of wiper block I 11 be 33 °～42 °, effect is better when the angle α of isocon 10 and wiper block I 11 is 36 °～40 °.Nozzle 3 is arranged in order along isocon 10 length directions, is spaced apart 1.8～2.6m between adjacent 2 nozzles 3, and effect is better when being spaced apart 2.0～2.4m.Nozzle 3 can directly be holed on corresponding position on the isocon 10 and be formed, and also nozzle cage 17 can be fixed on the relevant position of isocon 10.The angle β of nozzle 3 or nozzle cage 17 aperture axis and isocon 10 axis is 30 °.The aperture of nozzle 3 or nozzle cage 17 is 10～12mm; The shape of the ejiction opening of nozzle cage 17 also can be rectangle, and rectangular dimension is 5mm * 10mm.
With reference to Fig. 1.The upper end of oil pipe 7 is equipped with seal nipple 1, and the lower end is equipped with lower seal joint 8.Last seal nipple 1 and lower seal joint 8 adopt the cone sealing means.The two ends up and down of isocon 10 are connected with isocon lower contact 16 with isocon top connection 15 respectively, and the plug-in types mode that is tightly connected is adopted in isocon top connection 15 and isocon lower contact 16.During installation, isocon top connection 15 is not contour on the position with last seal nipple 1.
When using at the scene,, connect by root and to be lowered to the shunting sand screen, be lowered to order and be followed successively by: guide shoe shunting sand screen+shunting sand screen+shunting blind pipe+flow pack instrument+send into tubing string according to the length of horizontal well horizontal segment.After will shunting sand screen and being lowered into design attitude, suppress a seat envelope flow pack instrument with pump truck, and open the flow pack passage, carry out the flow pack operation.After the sand screen annular distance formed sand bridge, injection pressure strengthened, and will open the passage of isocon 10 in the work progress, load fluid carries gravel and sprays from nozzle 3 after isocon 10 is walked around sand bridge, continuation is carried out filling to annular space, and so a section advances, and finally realizes the gravel pack of whole horizontal segment.After finishing the gravel pack operation, anti-flushing well, back-off are given up to trip out and are sent into tubing string and core pipe, are lowered to flow string and can finish whole construction.
The utility model shunting sand screen is except the function that realizes common sand screen, can when horizontal well carries out the gravel pack construction, after sand screen master filling passage formation sand bridge is hampered, can walk around sand bridge the well section of back is proceeded packing job by isocon 10, thereby guarantee the quality of whole horizontal segment gravel pack, solve the inefficient problem of SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL, satisfy the construction requirement of SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL sand control.
The utility model shunting sand screen is not only applicable to the gravel filling sand prevention of horizontal well, also can be used for the gravel filling sand prevention process of high angle hole, long channel well, both can be in sleeve pipe construction operation, also can be in open hole well construction operation.
Claims (10)
1. shunting sand screen, comprise oil pipe, sand screen, centralizer, top connection, lower contact, oil pipe is equipped with sand screen outward, it is characterized in that: the external surface at oil pipe (7) is equipped with angle connecting board (2), last sand screen (4), eccentric centralizer (5), following sand screen (6), eccentric centralizer (5) and angle connecting board (2) from top to bottom successively; Eccentric centralizer (5) is fixedlyed connected with oil pipe (7); 4 wiper blocks of eccentric centralizer (5) are uniformly distributed along the circumference, wiper block II (12) and wiper block IV (14) positioned opposite, and equal in length; Wiper block I (11) and wiper block III (13) positioned opposite, the length of wiper block I (11) is greater than the length of wiper block III (13); Angle connecting board (2) is fixedlyed connected with oil pipe (7), is installed with isocon (10) on the angle connecting board (2), and isocon (10) is positioned at the side of wiper block I (11), has 1 nozzle (3) on the isocon (10) at least.
2. shunting sand screen according to claim 1 is characterized in that: described isocon (10) is that cross section is rectangular tubing, fixedlys connected with angle connecting board (2) in one of them long limit, and nozzle (3) is positioned on the minor face of isocon (10) left side.
3. shunting sand screen according to claim 2 is characterized in that: described nozzle (3) is arranged in order along isocon (10) length direction, adjacent nozzle (3) be spaced apart 1.8～2.6m.
4. shunting sand screen according to claim 3 is characterized in that: described isocon (10) is 2, and 2 isocons (10) lay respectively at wiper block I (11) both sides of eccentric centralizer (5), with the angle α of wiper block I (11) be 33 °～42 °.
5. shunting sand screen according to claim 1, it is characterized in that: fixedlying connected with the lower end of last sand screen (4) in the described upper end that is positioned at the eccentric centralizer (5) between sand screen (4) and the following sand screen (6), fixedlys connected with the upper end of following sand screen (6) in the lower end.
6. shunting sand screen according to claim 5 is characterized in that: described going up between sand screen (4) upper end endoporus and following sand screen (6) lower end endoporus and the oil pipe external surface is equipped with sealing ring (9).
7. according to claim 4 or 6 described shunting sand screens, it is characterized in that: the upper end of described oil pipe (7) is equipped with seal nipple (1), and the lower end is equipped with lower seal joint (8).
8. shunting sand screen according to claim 7 is characterized in that: described seal nipple (1) and lower seal joint (8) the employing cone sealing means gone up.
9. shunting sand screen according to claim 8, it is characterized in that: the two ends up and down of described isocon (10) are connected with isocon lower contact (16) with isocon top connection (15) respectively, and the plug-in type mode that is tightly connected is adopted in isocon top connection (15) and isocon lower contact (16).
10. shunting sand screen according to claim 9 is characterized in that: described isocon (10) and last seal nipple (1) are not contour on the position when mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620148045 CN200978659Y (en) | 2006-10-23 | 2006-10-23 | Sulfur-separating sand filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620148045 CN200978659Y (en) | 2006-10-23 | 2006-10-23 | Sulfur-separating sand filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200978659Y true CN200978659Y (en) | 2007-11-21 |
Family
ID=38979036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620148045 Expired - Fee Related CN200978659Y (en) | 2006-10-23 | 2006-10-23 | Sulfur-separating sand filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200978659Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832121A (en) * | 2010-05-24 | 2010-09-15 | 大港油田集团有限责任公司 | Horizontal well circulating gravel packing sand retention device |
| RU2540748C1 (en) * | 2013-12-20 | 2015-02-10 | Общество с ограниченной ответственностью НПО "ОргНефтеГаз" | Well screen |
| CN110145281A (en) * | 2019-07-01 | 2019-08-20 | 广州海洋地质调查局 | A kind of NEW TYPE OF COMPOSITE sand control structure |
-
2006
- 2006-10-23 CN CN 200620148045 patent/CN200978659Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832121A (en) * | 2010-05-24 | 2010-09-15 | 大港油田集团有限责任公司 | Horizontal well circulating gravel packing sand retention device |
| CN101832121B (en) * | 2010-05-24 | 2013-02-27 | 大港油田集团有限责任公司 | Horizontal well circulating gravel packing sand retention device |
| RU2540748C1 (en) * | 2013-12-20 | 2015-02-10 | Общество с ограниченной ответственностью НПО "ОргНефтеГаз" | Well screen |
| CN110145281A (en) * | 2019-07-01 | 2019-08-20 | 广州海洋地质调查局 | A kind of NEW TYPE OF COMPOSITE sand control structure |
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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: 20071121 Termination date: 20151023 |
|
| EXPY | Termination of patent right or utility model |