CN2679356Y - Chemical agent injection underground unidirectional flow control device - Google Patents
Chemical agent injection underground unidirectional flow control device Download PDFInfo
- Publication number
- CN2679356Y CN2679356Y CN 200420030551 CN200420030551U CN2679356Y CN 2679356 Y CN2679356 Y CN 2679356Y CN 200420030551 CN200420030551 CN 200420030551 CN 200420030551 U CN200420030551 U CN 200420030551U CN 2679356 Y CN2679356 Y CN 2679356Y
- Authority
- CN
- China
- Prior art keywords
- short circuit
- sealing
- spring
- outer pillar
- ball
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 16
- 239000007924 injection Substances 0.000 title claims abstract description 16
- 239000013043 chemical agent Substances 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 239000003129 oil well Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 2
- 239000000565 sealant Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
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- Pipe Accessories (AREA)
Abstract
The utility model relates to a device in pit that is used for pumping well especially viscous crude, high wax content oil well to annotate chemical agent exploitation comprises last reducing joint 1, outer pillar 3, sealed plug 4, intermediate junction body 6, sealed steel ball 7, 12, ball support 8, 13, spring 9, 14, spring holder 10, 15, sealed short circuit 11, lower reducing coupling 16 and sealed rubber ring 2, 5, 17, 18, 19, 20. The device has the advantages of reasonable design, novel structure and reliable work, and can ensure reliable sealing, flexible switching, no backflow of liquid and no blockage due to the structural characteristics of the injection device with the cavity, horizontal hole injection and double-ball series connection, ensure the injection of chemical agents and the normal production of thick oil and high wax content oil wells, and is suitable for popularization and application.
Description
Technical field:
The utility model relates to a kind of particularly downhole hardware of viscous crude, the exploitation of high waxy oil well chemical injection of pumpingh well that is used for.
Background technology:
Chemical injection is that heavy oil wells viscosity reduction, the clear wax control of high waxy oil well, de-plugging are so that a kind of important process measure of its normal exploitation.At present, the chemical injection downhole hardware of field by using is that straight hole injects, and stops up easily, owing to adopt single ball sealing, switch failure takes place easily, and these faults all can directly influence the carrying out of chemical agent injection work, thereby influence the ordinary production of oil well.
Summary of the invention:
The utility model purpose is to provide a kind of and overcomes the existing product shortcoming, can guarantee the chemical injection down-hole one-way flow control device of the normal injection of chemical agent and viscous crude, high waxy oil well ordinary production.
The utility model is to realize like this.This kind one-way flow control device is made up of last reducer union, outer pillar, sealing plug, intermediate connector, sealed steel ball, ball holder, spring, spring base, sealing short circuit, following sub-coupling and O-ring seal, last reducer union lower end is connected with outer pillar with screw thread, and outer pillar lower end internal thread is connected with following sub-coupling external screw thread; Be provided with intermediate connector in the outer pillar, its upper and lower end is connected with the sealing short circuit with the sealing plug with screw thread respectively, and sealing short circuit lower end is connected with box cupling upper end internal thread under the reducing; Sealing short circuit upper and lower is respectively equipped with sealed steel ball, ball holder, spring and spring base from top to bottom successively in the intermediate connector; More than each hardware body or connecting portion be respectively equipped with sealing ring.During use, the last reducer union of this device is connected with rod string with screw thread.When chemical agent injected, chemical agent entered by the horizontal through hole on the sealing plug sidewall, and two spring bases play spring respectively and set upright and the overcurrent effect up and down, sealed steel ball then under spring action with sealing plug and the sealing of sealing short circuit.This device forms the cavity state by the two ball valves of the series connection in the intermediate connector with outer pillar generally, thereby can guarantee that its sealing is reliable, switch is flexible, liquid does not flow backwards, because the impurity in the chemical agent can be deposited in the cavity of annular space, thereby the obstruction of unlikely generation injection runner, guarantee normally carrying out of chemical agent injection and oil well production.
The utility model is reasonable in design, novel structure, reliable operation, because it has attached cavity, lateral aperture injects and the design feature of two ball series connection, can guarantee that sealing is reliable, switch is flexible, liquid does not flow backwards, the unlikely obstruction, the ordinary production of assurance chemical agent injection and viscous crude, high waxy oil well is suitable for and applies.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment: enforcement of the present utility model is illustrated below in conjunction with accompanying drawing.
As shown in the figure: the utility model is made up of last reducer union 1, outer pillar 3, sealing plug 4, intermediate connector 6, sealed steel ball 7,12, ball holder 8,13, spring 9,14, spring base 10,15, sealing short circuit 11, following sub-coupling 16 and O-ring seal 2,5,17,18,19,20, its structure, assembled relation are as follows: go up reducer union 1 lower end and be connected with outer pillar 3 with screw thread, outer pillar 3 lower end internal threads are connected with following sub-coupling 16 external screw threads; Be provided with intermediate connector 6 in the outer pillar 3, its upper and lower end is connected with sealing short circuit 11 with sealing plug 4 with screw thread respectively, and sealing short circuit 11 lower ends are connected with box cupling 16 upper end internal threads under the reducing; Sealing short circuit 11 upper and lowers are respectively equipped with sealed steel ball 7, ball holder 8, spring 9, spring base 10 and steel ball 12, ball holder 13, spring 14, spring base 15 from top to bottom successively in the intermediate connector 6; Last reducer union 1 is provided with O-ring seal 2,20, and sealing plug 4 is provided with O-ring seal 5, and intermediate connector 6 is provided with O-ring seal 17, and sealing short circuit 11 is provided with fluid sealant Figure 18,19.Wherein, last reducer union 1 upper end is provided with the external screw thread that matches with sucker rod, and the lower end periphery protrudes the position and is provided with the external screw thread that matches with outer pillar 3 internal threads.Outer pillar 3 is a pipe, and its upper and lower end has the internal thread that matches with last reducer union 1 lower end external screw thread and following sub-coupling 16 middle part external screw threads respectively.Sealing plug 4 hollows, end face is shut, and it is conical that outer surface of upper is, and the middle part cylindrical side wall is provided with through hole, and the following undergauge of lower end step position is provided with and is used for the external screw thread that is connected with intermediate connector 6.Intermediate connector 6 is a short tube, and its upper and lower end is respectively equipped with and seals plug 4 and seals the internal thread that short circuit 11 matches.Sealing short circuit 11 is upper and lower isometrical, a middle nipple that protrudes, and its upper and lower end is respectively equipped with the external screw thread that matches with intermediate connector 6 and following sub-coupling 16.Following sub-coupling 16 upper and lower ends are respectively equipped with and seal short circuit 11 and connect the internal thread that sucker rod matches down, and the middle part periphery protrudes the position and is provided with the external screw thread that matches with outer pillar 3 internal threads.
Claims (2)
1, a kind of chemical injection down-hole one-way flow control device, by last reducer union (1), outer pillar (3), sealing plug (4), intermediate connector (6), sealed steel ball (7), (12), ball holder (8), (13), spring (9), (14), spring base (10), (15), sealing short circuit (11), following sub-coupling (16) and O-ring seal (2), (5), (17), (18), (19), (20) form, it is characterized in that: go up reducer union (1) lower end and be connected with outer pillar (3) with screw thread, outer pillar (3) lower end internal thread is connected with following sub-coupling (16) external screw thread; Be provided with intermediate connector (6) in the outer pillar (3), its upper and lower end is connected with sealing short circuit (11) with sealing plug (4) with screw thread respectively, and sealing short circuit (11) lower end is connected with box cupling (16) upper end internal thread under the reducing; Sealing short circuit (11) upper and lower is respectively equipped with sealed steel ball (7), ball holder (8), spring (9), spring base (10) and steel ball (12), ball holder (13), spring (14), spring base (15) from top to bottom successively in the intermediate connector (6); Last reducer union (1) is provided with O-ring seal (2), (20), and sealing plug (4) is provided with O-ring seal (5), and intermediate connector (6) is provided with O-ring seal (17), and sealing short circuit (11) is provided with fluid sealant figure (18), (19).
2, chemical injection oil well liquid according to claim 1 all loads in mixture and puts, it is characterized in that: this device forms cavity by the two ball valves of the series connection in the intermediate connector (6) with outer pillar (3) generally, and chemical agent injects by the horizontal through hole on the sealing plug (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030551 CN2679356Y (en) | 2004-03-01 | 2004-03-01 | Chemical agent injection underground unidirectional flow control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030551 CN2679356Y (en) | 2004-03-01 | 2004-03-01 | Chemical agent injection underground unidirectional flow control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2679356Y true CN2679356Y (en) | 2005-02-16 |
Family
ID=34583648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420030551 Expired - Fee Related CN2679356Y (en) | 2004-03-01 | 2004-03-01 | Chemical agent injection underground unidirectional flow control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2679356Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893644A (en) * | 2017-12-27 | 2018-04-10 | 山东博赛特石油技术有限公司 | A kind of underground hydraulic pressure control device |
| CN108643872A (en) * | 2018-07-05 | 2018-10-12 | 江苏航天鸿鹏数控机械有限公司 | A kind of heavy oil wells pumping wax-proofing apparatus |
-
2004
- 2004-03-01 CN CN 200420030551 patent/CN2679356Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893644A (en) * | 2017-12-27 | 2018-04-10 | 山东博赛特石油技术有限公司 | A kind of underground hydraulic pressure control device |
| CN107893644B (en) * | 2017-12-27 | 2020-01-21 | 山东博赛特石油技术有限公司 | Underground hydraulic control device |
| CN108643872A (en) * | 2018-07-05 | 2018-10-12 | 江苏航天鸿鹏数控机械有限公司 | A kind of heavy oil wells pumping wax-proofing apparatus |
| CN108643872B (en) * | 2018-07-05 | 2024-02-20 | 江苏航天鸿鹏数控机械有限公司 | Viscous crude well swabbing wax control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |