CN1299917A - Polymer depositing well flow rate controller - Google Patents
Polymer depositing well flow rate controller Download PDFInfo
- Publication number
- CN1299917A CN1299917A CN 00102551 CN00102551A CN1299917A CN 1299917 A CN1299917 A CN 1299917A CN 00102551 CN00102551 CN 00102551 CN 00102551 A CN00102551 A CN 00102551A CN 1299917 A CN1299917 A CN 1299917A
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- shell
- polymer
- flow rate
- throttling core
- rate controller
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Abstract
The present invention relates to an oil field polymer driven multilayer injection downhole flow control device, which is characterized by that the external surface of throttling core of said device is equipped with several circular grooves, these circular grooves can be combined with matched external shell to form step-by-step decompressional overflow channel suitable for polymer displacement multilayer injection. Said invention is novel in structure, simple, easy to control flow rate, and can make multi-stage use, and its degradability for polymer solution is less.
Description
The present invention relates to technical field of oilfield tertiary oil recovery, is a kind of field polymers depositing well flow rate controller.
At present, the field polymers depositing adopts two-tube layering, and ground injection liquid transportation and control device are very complicated, and make complex procedures in the underground work, limited the development of polymer depositing technology, and oilfield polymer flooding also there is not the technology of single string multi dispensing now.
The objective of the invention is to solve polymer single string multi zonal injection technology technology, thereby a kind of well flow rate controller of single string multi dispensing of novelty simple in structure is provided.
The objective of the invention is to realize with following mode:
This device is made up of top connection, shell, throttling core, sealing ring etc., wherein top connection is connected with outer casing screw, the throttling core outer surface has a plurality of annular relief grooves, inner surface is the smooth passage, sealing ring places between shell and the throttling core upper end, on the step in the enclosure of throttling core location, and be combined into special flow channels with the slippery inner surface of shell.
Because the general injection mode of the main at present employing of polymer flooding injection technique, also with regard to the injection flow of uncontrollable polymer flooding solution, and when adopting this device, when polymer solution by by the buck channel step by step that inner surface was combined into of the external surface of throttling core and shell the time, because the effect of a plurality of cannelures, the flow field of liquid stream is repeatedly redistributed and consumed energy, form the flow that resistance is controlled polymer solution.Like this, promptly can control flow and can make the viscosity loss of the polymer solution by flow control device minimum again, keep the stability of polymer, this is important measures that improve the polymer flooding effect.
The present invention compared with prior art has following advantage:
1. this apparatus structure novelty, simple can multistage use;
2. can control flow by the change in length of throttling core easily;
3. after polymer solution installed by this, its viscosity loss was minimum, and it is minimum to degrade, thereby has kept the stability of polymer.
The drawing of accompanying drawing is described as follows:
Fig. 1 is a structure diagram of the present invention;
Fig. 2 is a down-hole of the present invention depositing tubing string sketch.
The invention will be further described below in conjunction with accompanying drawing:
This device is made up of top connection 1, shell, throttling core 3, sealing ring 4 etc., and wherein top connection 1 is threaded with shell 2, and throttling core 3 external surfaces have a plurality of annular relief grooves, and inner surface is the smooth passage.Sealing ring 4 places between shell 2 and throttling core 3 upper ends, and throttling core 3 is positioned on the step in the shell 2, and is combined into special flow channels with the slippery inner surface of shell 2.
Down-hole of the present invention depositing tubing string is made up of oil pipe 5, sleeve pipe 6, packer 7, well flow rate controller 8, oil reservoir 9 etc.
During on-the-spot the use, at first with depositing tubing string G.I.H, discharge packer 7, by packer 7 oil reservoir 9 is separated, after polymer solution pumps into down-hole oil tube 5 by ground installation, liquid is flowed through and is entered circular passage between throttling core 3 and the shell 2 behind the endoporus of well flow rate controller 8, under the effect of a plurality of cannelures step by step after the step-down, realize control by chock pressure difference to flow, liquid is flowed through and is injected oil reservoir 9 after fluid hole on the shell 2 enters oil pipe 5 and sleeve pipe 6 annular spaces, throttling core 3 in the flow control device 8 can be finished pulling by steel wire for logging, and the length by adjusting throttling core 3 is to reach the requirement of multi-zone flow regulating.
Claims (1)
1, a kind of polymer flooding depositing well flow rate controller relates to technical field of oilfield tertiary oil recovery, it is characterized in that: it is made up of top connection (1), shell (2), throttling core (3), sealing ring (4) etc., wherein top connection (1) is threaded with shell (2), throttling core (3) external surface has a plurality of annular relief grooves, inner surface is the smooth passage, sealing ring (4) places between shell (2) and throttling core (3) upper end, throttling core (3) is positioned on the step in the shell (2), and is combined into special flow channels with the slippery inner surface of shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00102551A CN1115467C (en) | 2000-03-01 | 2000-03-01 | Polymer depositing well flow rate controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00102551A CN1115467C (en) | 2000-03-01 | 2000-03-01 | Polymer depositing well flow rate controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1299917A true CN1299917A (en) | 2001-06-20 |
| CN1115467C CN1115467C (en) | 2003-07-23 |
Family
ID=4576463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00102551A Expired - Fee Related CN1115467C (en) | 2000-03-01 | 2000-03-01 | Polymer depositing well flow rate controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1115467C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025927A (en) * | 2018-07-23 | 2018-12-18 | 中国海洋石油集团有限公司 | A kind of underground injection device of changeable polymer viscosity |
| CN110036180A (en) * | 2016-09-26 | 2019-07-19 | 艾奎诺能源公司 | For reducing the method and apparatus of fluid pressure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4510993A (en) * | 1982-03-25 | 1985-04-16 | Marathon Oil Company | Flow control apparatus and method |
| US4782847A (en) * | 1982-06-23 | 1988-11-08 | Marathon Oil Company | Flow control apparatus and method |
| US4533594A (en) * | 1983-12-16 | 1985-08-06 | Porritts & Spencer | Batt-on-mesh felt employing polyurethane-coated multifilaments in the cross-machine direction |
| CN1070245A (en) * | 1992-07-09 | 1993-03-24 | 李国斌 | Solution flow regulator |
| CN2173309Y (en) * | 1993-04-10 | 1994-08-03 | 新疆石油管理局油田工艺研究所 | Distributor for injecting water to oil well |
| CN2179909Y (en) * | 1993-08-24 | 1994-10-19 | 辽河石油勘探局茨榆坨采油厂 | Pipe column sliding valve for underground multiple-zone construction |
-
2000
- 2000-03-01 CN CN00102551A patent/CN1115467C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110036180A (en) * | 2016-09-26 | 2019-07-19 | 艾奎诺能源公司 | For reducing the method and apparatus of fluid pressure |
| CN110036180B (en) * | 2016-09-26 | 2022-01-28 | 艾奎诺能源公司 | Method and apparatus for reducing liquid pressure |
| US11655914B2 (en) | 2016-09-26 | 2023-05-23 | Equinor Energy As | Method and apparatus for reducing liquid pressure |
| CN109025927A (en) * | 2018-07-23 | 2018-12-18 | 中国海洋石油集团有限公司 | A kind of underground injection device of changeable polymer viscosity |
| CN109025927B (en) * | 2018-07-23 | 2020-09-01 | 中国海洋石油集团有限公司 | Underground injection device capable of changing polymer viscosity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1115467C (en) | 2003-07-23 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| 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: 20030723 Termination date: 20180301 |
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| CF01 | Termination of patent right due to non-payment of annual fee |