CN204175267U - Chemical flooding layering injection device - Google Patents
Chemical flooding layering injection device Download PDFInfo
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- CN204175267U CN204175267U CN201420483054.3U CN201420483054U CN204175267U CN 204175267 U CN204175267 U CN 204175267U CN 201420483054 U CN201420483054 U CN 201420483054U CN 204175267 U CN204175267 U CN 204175267U
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- main body
- inclined hole
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- month
- piston
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Abstract
A kind of chemical flooding layering injection device, the lower end of its top connection is connected with the threaded upper ends of upper joint sleeve, and the lower end of upper joint sleeve is connected with the threaded upper ends of main body; Guide way is inserted in upper joint sleeve, and the lower end of guide way is connected with the upper end of main body, in centralizer body, install guide way; The lower end of main body is threaded with lower contact; Main body is circumferentially provided with the first axial inclined hole and the second inclined hole.Main body is equipped with the reverse sealing mechanism of downhole fluid, in the second inclined hole built with side valve type pressure measuring mechanism.The beneficial effects of the utility model are: one be when Injection Well closing well or stop note time, reverse sealing mechanism work, stop the liquid of high pressure zone to be poured in down a chimney to low pressure layer by layering injection device, two be pressure measurement after can realizing oppositely sealing by side valve type pressure measuring mechanism and layering injection string test envelope.When can solve anti-flushing well, flushing fluid is shunted and is caused the halfway problem of well-flushing on layering injection device simultaneously.Technique inheritance is good, and on-the-spot application is convenient.
Description
Technical field
The utility model relates to a kind of oil extraction in oil field technique layering implantation tool, specifically a kind of chemical flooding layering injection device.
Background technology
The proportion of current chemical flooding technology in oil field increases gradually, is one of important means in oilfield development process.At present, a lot of oil field all adopts eccentric layering injection technology, and the function that existing chemical flooding eccentric flow regulator does not oppositely seal, when closing well or when stopping note, the liquid of high pressure zone can be poured in down a chimney to low pressure layer by eccentric flow regulator, and reservoir sand and foul are carried enter in oil pipe, have impact on the effect that layering is injected.When Injection Well needs well-flushing, flushing fluid can enter in oil pipe on eccentric flow regulator, thus produces the midway shunting of flushing fluid, causes the halfway problem of well-flushing.
In addition, prior art does not oppositely seal pressure measuring mechanism, and what can not realize the pressure measurement after oppositely sealing and layering injection string tests envelope.
Summary of the invention
The purpose of this utility model is to provide a kind of chemical flooding layering injection device, for chemical flooding layering injection technology, solve the reverse sealing problem of oil field layered Injection Well eccentric flow regulator, devise simultaneously side valve type pressure measuring mechanism solve oppositely sealing after pressure measurement and layering injection string test envelope problem, improve layering further for oil field and inject effect, provide technical support.
The technical solution of the utility model is: a kind of chemical flooding layering injection device, comprise top connection, upper joint sleeve, centralizer body, guide way, main body and lower contact, wherein the lower end of top connection is connected with the threaded upper ends of upper joint sleeve, and the lower end of upper joint sleeve is connected with the threaded upper ends of main body; Guide way is inserted in upper joint sleeve, and the lower end of guide way and the upper end of main body are connected by screw, in centralizer body, install guide way; The lower end of main body is threaded with lower contact; Main body is circumferentially provided with the first axial inclined hole and the second inclined hole, it is characterized in that, described main body is equipped with the reverse sealing mechanism of downhole fluid, in the described second inclined hole built with side valve type pressure measuring mechanism.
The reverse sealing mechanism of described downhole fluid comprise ring in first half of the month, the second half of the month ring and rubber tube, first half of the month ring and the upper and lower coaxial sleeve of the second half of the month ring in the respective slot of described centerbody outer peripheral face, the second half of the month ring is provided with radial liquid pass hole; Rubber sleeve first half of the month ring and the second half of the month ring periphery; Corresponding to ring and be provided with semi-moon shaped upper channel with the outer peripheral face of the main body at the first inclined hole place in first half of the month, this upper channel is crossing with the first inclined hole; Correspond to the second half of the month ring main body outer peripheral face and correspond to two jiaos of the upper channel other lower channels being respectively provided with one and a half months shape, one jiao of this lower channel overlaps with two jiaos of upper channel and communicates respectively.
Described side valve type pressure measuring mechanism comprises screw top lid, piston, spring and spring stack, the bottom of spring stack is threaded connection in the lower opening of the second inclined lower end, hole, pocketed springs on spring stack, outward flange is provided with as spring-loaded bearing in the bottom of described spring stack, be provided with centre bore in bottom, the top of this centre bore communicates with the outside of spring stack bottom; On this spring top, piston is installed, is connected with the top of screw top lid with the second inclined hole on the top of this piston; Be provided with only through with the bottom of piston centre bore in the axle center of piston, be provided with three seals ring at the outer peripheral face of piston, between adjacent joint ring, be respectively equipped with upper and lower annular groove, on this, annular groove communicates with centre bore; Hole is provided with near between upper end and the centre bore of described main body in the second inclined hole; The accessibke porosity communicated with described body exterior is provided with on the top in the second inclined hole.
The beneficial effects of the utility model are: one be when Injection Well closing well or stop note time, reverse sealing mechanism work, stop the liquid of high pressure zone to be poured in down a chimney to low pressure layer by layering injection device, two be pressure measurement after can realizing oppositely sealing by side valve type pressure measuring mechanism and layering injection string test envelope.When can solve anti-flushing well, flushing fluid is shunted and is caused the halfway problem of well-flushing on layering injection device simultaneously.Using method and original chemical flooding eccentric flow regulator just the same, technique inheritance is good, and on-the-spot application is convenient.
Accompanying drawing explanation
Fig. 1 is the axial sectional view (the C-C sectional view of Fig. 3) of general structure of the present utility model;
Fig. 2 is the enlarged drawing of main part in Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the B-B sectional view of Fig. 2;
Fig. 5 is the D-D sectional view (main part) of Fig. 4.
Detailed description of the invention
See Fig. 1 ~ Fig. 5, a kind of chemical flooding layering injection device of the utility model, comprises top connection 1, upper joint sleeve 2, centralizer body 3, guide way 4, main body 5 and lower contact 6.Wherein top connection 1 is threaded with upper joint sleeve 2, and after loading guide way 4 in centralizer body 3, insert after its lower end and main body 5 are connected by screw in upper joint sleeve 2, main body 5 is threaded with lower contact 6; Main body 5 is circumferentially provided with the first axial inclined hole 86 and the second inclined hole 87.Above-mentioned is the structure of existing eccentric flow regulator.
The utility model has carried out following improvement on the basis of existing eccentric flow regulator: the reverse sealing mechanism 8 of downhole fluid is housed on the top of described main body 5, in the described second inclined hole 87 built with side valve type pressure measuring mechanism 7.
See Fig. 2, described side valve type pressure measuring mechanism 7 comprises screw top lid 71, piston 72, spring 74 and spring stack 78, and the bottom 781 of spring stack 78 is threaded connection in the lower opening 77 of the second lower end, inclined hole 87.Pocketed springs 74 on spring stack 78, installs piston 72 on the top of this spring 74, is connected on the top of this piston 72 with the top of screw top lid 71 with the second inclined hole 87.Be provided with the bearing of outward flange as shock mount 74 in the bottom 781 of described spring stack 78, be provided with centre bore 782 in bottom 781, the top of this centre bore 782 communicates with the outside of spring stack 78 bottom.Only through with the bottom of piston 72 centre bore 73 is provided with in the axle center of piston 72, three seals ring 721 is provided with at the outer peripheral face of piston 72, between adjacent joint ring 721, be respectively equipped with annular groove 722 and lower annular groove 723, on this, annular groove 722 communicates with centre bore 73.Be provided with hole 76 in the second inclined hole 87 near between upper end and the centre bore of described main body 5, the lower opening 77(being provided with undergauge in the lower end in the second inclined hole 87 is provided with internal thread, is threaded connection with the bottom 781 of spring stack 78).The accessibke porosity 75 communicated with described main body 5 outside is provided with on the top in the second inclined hole 87.
When the utility model normally works, upper hole 76 and lower opening 77 are oily overpressure, due to the area equation of piston 72 top and bottom, so under the elastic force effect of spring 74 transfixion, now piston 72 main body 5 is inside and outside between pilot passage (i.e. accessibke porosity 75 and between upper hole 76 and lower opening 77) closed.When pressure-measuring sealing section acts in centre bore 73, the sealing cup of pressure-measuring sealing section will cut off lower opening 77 and the pressure communication in oil pipe, and upper hole 76 still remains tubing pressure, in formation, hole 76 pressure (tubing pressure) is greater than lower opening 77 pressure (casing pressure), make piston 72, slide in the direction of down bore 77, when sliding into restriction position, centre bore 73 in piston 72 is communicated with accessibke porosity 75, thus by casing pressure by accessibke porosity 75, the centre bore 73 of piston 72 and lower opening 77 importing act in the pressure-measuring sealing section pressure gauge in main body 5, what realize pressure measurement and layering injection string tests envelope function.
See Fig. 2-Fig. 5, the reverse sealing mechanism 8 of described downhole fluid comprise ring 82 in first half of the month, the second half of the month ring 83 and rubber tube 84, first half of the month, ring 82 was with in the respective slot of the second half of the month ring 83 about coaxial sleeve outer peripheral face at place on the upper side in the middle part of described main body 5, and the second half of the month ring 83 is provided with the liquid pass hole 831 of radial direction; Rubber tube 84 cover (cover) first half of the month ring 82 and the second half of the month ring 83 periphery.Corresponding to ring 82 and be provided with semi-moon shaped upper channel 81 with the outer peripheral face of the main body 5 at the first inclined hole 86 place in first half of the month, this upper channel 81 is crossing with the first inclined hole 86.The outer peripheral face of main body 5 corresponding to the second half of the month ring 83 place corresponds to two jiaos of upper channel 81 and is otherly arranged with two semi-moon shaped lower channels 88, and one jiao of this lower channel 88 overlaps and communicate (see Fig. 4) with two jiaos of upper channel 81 respectively.
Because output channel (upper channel 81) place of main body 5 has rubber tube 84 to wrap up, so when carrying out pressure measurement with pressure-measuring sealing section or testing envelope to layering injection string, oil pipe external pressure cannot be transmitted in the pressure-measuring sealing section in oil pipe by exit passageway.After injection liquid enters inclined hole from the bottom in the first inclined hole 86, first upper channel 81 is entered, owing to being subject to the stop of ring 82 in first half of the month, injection liquid continues to enter into lower channel 88, and by the liquid pass hole 831 on the second half of the month ring 83, finally extrude from the below of rubber tube 84 under the promotion of pressure and enter into stratum.
When underground work, once closing well or stop note, then strata pressure is greater than oily overpressure, output channel (upper channel 81) oppositely seals by rubber tube 84 under hydraulic action, make high pressure zone liquid cannot enter oil pipe by output channel, avoid reservoir sand and foul to pour in down a chimney in device and oil pipe, affect multi-zone flow regulating effect.
Claims (3)
1. a chemical flooding layering injection device, comprise top connection (1), upper joint sleeve (2), centralizer body (3), guide way (4), main body (5) and lower contact (6), the lower end of wherein top connection (1) is connected with the threaded upper ends of upper joint sleeve (2), and the lower end of upper joint sleeve (2) is connected with the threaded upper ends of main body (5); Guide way (4) is inserted in upper joint sleeve (2), and the lower end of guide way (4) and the upper end of main body (5) are connected by screw, in centralizer body (3), install guide way (4); The lower end of main body (5) is threaded with lower contact (6); Main body (5) is circumferentially provided with the first axial inclined hole (86) and the second inclined hole (87), it is characterized in that, the reverse sealing mechanism of downhole fluid (8) is equipped with described main body (5), the described second inclined hole (87) built with side valve type pressure measuring mechanism (7).
2. chemical flooding layering injection device according to claim 1, it is characterized in that, the reverse sealing mechanism of described downhole fluid (8) comprises ring in first half of the month (82), the second half of the month ring (83) and rubber tube (84), ring in first half of the month (82) and the second half of the month ring (83) up and down coaxial sleeve in the respective slot of described centerbody (85) outer peripheral face, be provided with radial liquid pass hole (831) the second half of the month ring (83); Rubber tube (84) is enclosed within the periphery of ring in first half of the month (82) and the second half of the month ring (83); Corresponding to ring in first half of the month (82) and be provided with semi-moon shaped upper channel (81) with the outer peripheral face of the main body (5) at the first inclined hole (86) place, this upper channel (81) is crossing with the first inclined hole (86); Correspond to the second half of the month ring (83) main body (5) outer peripheral face and correspond to two jiaos of upper channel (81) the other lower channels (88) being respectively provided with one and a half months shape, one jiao of this lower channel (88) overlaps with two jiaos of upper channel (81) and communicates respectively.
3. chemical flooding layering injection device according to claim 1, it is characterized in that, described side valve type pressure measuring mechanism (7) comprises screw top lid (71), piston (72), spring (74) and spring stack (78), the bottom (781) of spring stack (78) is threaded connection in the lower opening (77) of the second inclined hole (87) lower end, at the upper pocketed springs (74) of spring stack (78), the bearing of outward flange as shock mount (74) is provided with in the bottom (781) of described spring stack (78), centre bore (782) is provided with in bottom (781), the top of this centre bore (782) communicates with the outside of spring stack (78) bottom, on the top of this spring (74), piston (72) is installed, is connected with the top of screw top lid (71) with the second inclined hole (87) on the top of this piston (72), only through with the bottom of piston (72) centre bore (73) is provided with in the axle center of piston (72), three seals ring (721) is provided with at the outer peripheral face of piston (72), between adjacent joint ring (721), be respectively equipped with upper and lower annular groove (722,723), on this, annular groove (722) communicates with centre bore (73), the second inclined hole (87) near being provided with upper hole (76) between upper end and the centre bore of described main body (5), the accessibke porosity (75) communicated with described main body (5) outside is provided with on the top of the second inclined hole (87).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420483054.3U CN204175267U (en) | 2014-08-26 | 2014-08-26 | Chemical flooding layering injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420483054.3U CN204175267U (en) | 2014-08-26 | 2014-08-26 | Chemical flooding layering injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175267U true CN204175267U (en) | 2015-02-25 |
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ID=52564084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420483054.3U Withdrawn - After Issue CN204175267U (en) | 2014-08-26 | 2014-08-26 | Chemical flooding layering injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175267U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196505A (en) * | 2014-08-26 | 2014-12-10 | 康庆刚 | Layered injection device for chemical flooding |
-
2014
- 2014-08-26 CN CN201420483054.3U patent/CN204175267U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196505A (en) * | 2014-08-26 | 2014-12-10 | 康庆刚 | Layered injection device for chemical flooding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150225 Effective date of abandoning: 20160615 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |