CN203702089U - Paraffin scrapping device for oil extraction pipe - Google Patents
Paraffin scrapping device for oil extraction pipe Download PDFInfo
- Publication number
- CN203702089U CN203702089U CN201420077651.6U CN201420077651U CN203702089U CN 203702089 U CN203702089 U CN 203702089U CN 201420077651 U CN201420077651 U CN 201420077651U CN 203702089 U CN203702089 U CN 203702089U
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- CN
- China
- Prior art keywords
- connecting rod
- paraffin
- sleeve pipe
- paraffin cutting
- scrapping
- 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
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Abstract
A paraffin scrapping device for an oil extraction pipe is characterized by comprising a connecting rod (1), a paraffin scrapping sleeve (2) and a casing pipe (3); the casing pipe (3) sleeves the connecting rod (1); the paraffin scrapping sleeve (2) is fixed on the casing pipe (3) through a fixing pin (4); an annular channel (5) is formed between the paraffin scrapping sleeve (2) and the casing pipe (3); the internal wall of the paraffin scrapping sleeve (2) is provided with a temperature sensor (6); a heating device (7) is installed on the connecting rod (1) which is arranged inside the casing pipe (3); the heating device (7) is connected with the temperature sensor (6); two ends of the connecting rod (1) are provided with blocking caps (8); the bottom of the connecting rod (1) is provided with a shoveling cutter (9); the upper portion of the connecting rod (1) is provided with oil extraction threads.
Description
Technical field
The utility model relates to a kind of flow string wax scraping apparatus, belongs to oil recovery production technical field.
Background technology
At present, in process of production, oil flows while flowing from shaft bottom to well head producing well, well temperature declines gradually, and when lower than wax precipitation point, wax contained in crude oil will be separated out, stop up oil flow channel, affect oil well production, need to carry out wax removal to oil well and just can make oil well normally produce.Existing dewaxing method is more, and hot water circuit well-flushing makes wax dissolve outflow, and hot water enters stratum and causes oil layer pollution; In oil well, add paraffin remover, the method cost is high, and overhead cost are high, less economical; Independent mechanical scraping paraffin removal effect is undesirable, has increased running resistance, has increased energy consumption.
Summary of the invention
The purpose of this utility model is to solve the deficiency that above-mentioned prior art exists, and provides a kind of easy and simple to handle, the flow string wax scraping apparatus that paraffin removal is effective.
A kind of flow string wax scraping apparatus of the present utility model, special character is to comprise connecting rod 1, paraffin cutting cover 2 and sleeve pipe 3, sleeve pipe 3 is sleeved on connecting rod 1, and paraffin cutting cover 2 is fixed on sleeve pipe 3 by steady pin 4, between described paraffin cutting cover 2 and sleeve pipe 3, forms circular passage 5; Described paraffin cutting overlaps 2 inwalls and is provided with temperature pick up 6, on the connecting rod 1 in sleeve pipe 3, heater 7 is installed, and heater 7 is connected with temperature pick up 6; Connecting rod 1 two ends are provided with gear cap 8, and with fixed sleeving 3, connecting rod 1 bottom is provided with perching knife 9, and connecting rod 1 top is provided with sucker rod screw thread.
A kind of flow string wax scraping apparatus of the utility model, is provided with perching knife, can carry out preliminary paraffin cutting to the wax of tube inner wall, and paraffin cutting cover carries out further paraffin cutting operation to oil pipe.Meanwhile, the variation of temperature sensor senses well temperature, while separating out more wax, controls heater heating in crude oil, wax is dissolved and flow out.Different structure cooperatively interacts auxiliary, thereby obtains good paraffin cutting effect.
Accompanying drawing explanation
Fig. 1: the structural representation of the utility model flow string wax scraping apparatus;
The A-A of Fig. 2: Fig. 1 is to generalized section;
In figure: 1: connecting rod; 2: scrape ceratuba; 3: sleeve pipe; 4: steady pin; 5: circular passage; 6: temperature pick up; 7: heater; 8: gear cap; 9: perching knife.
The specific embodiment
Referring to accompanying drawing, provide the specific embodiment of the present utility model, be used for formation of the present utility model to be further described.
Embodiment 1
A kind of flow string wax scraping apparatus of the present embodiment comprises connecting rod 1, paraffin cutting cover 2 and sleeve pipe 3, and sleeve pipe 3 is sleeved on connecting rod 1, and paraffin cutting cover 2 is fixed on sleeve pipe 3 by steady pin 4, between described paraffin cutting cover 2 and sleeve pipe 3, forms circular passage 5; Described paraffin cutting overlaps 2 inwalls and is provided with temperature pick up 6, on the connecting rod 1 in sleeve pipe 3, heater 7 is installed, and heater 7 is connected with temperature pick up 6; Connecting rod 1 two ends are provided with gear cap 8, positioning and locking fixed sleeving 3 while being convenient to be connected with box cupling, and connecting rod 1 bottom is provided with perching knife 9, and connecting rod 1 top is provided with sucker rod screw thread, is convenient to be connected with sucker rod.
When paraffin cutting, connecting rod 1 is up and down in tubing string, and perching knife 9 is tentatively rooted out the wax on tubing wall, roots out in process at perching knife, and paraffin cutting cover 2 is carrying out thereafter the removing of further wax; Being installed on the temperature pick up 6 that paraffin cutting overlaps 2 inwalls responds to well temperature, when bottom hole temperature (BHT) lower, when tubing wall is separated out more wax, temperature pick up 6 is controlled heater 7 and is heated, in connecting rod 1 moving process to around heat, wax is dissolved and flow out, the wax of removing and liquid stream all flow out by circular passage 5.
A kind of flow string wax scraping apparatus of the utility model, is provided with perching knife, can carry out preliminary paraffin cutting to the wax of tube inner wall, and paraffin cutting cover carries out further paraffin cutting operation to oil pipe.Meanwhile, the variation of temperature sensor senses well temperature, while separating out more wax, controls heater heating in crude oil, wax is dissolved and flow out.Different structure cooperatively interacts auxiliary, thereby obtains good paraffin cutting effect.
Claims (1)
1. a flow string wax scraping apparatus, it is characterized in that comprising connecting rod (1), paraffin cutting cover (2) and sleeve pipe (3), sleeve pipe (3) is sleeved on connecting rod (1), it is upper that paraffin cutting cover (2) is fixed on sleeve pipe (3) by steady pin (4), between described paraffin cutting cover (2) and sleeve pipe (3), forms circular passage (5); Described paraffin cutting cover (2) inwall is provided with temperature pick up (6), on the connecting rod (1) in sleeve pipe (3), heater (7) is installed, and heater (7) is connected with temperature pick up (6); Connecting rod (1) two ends are provided with gear cap (8), and connecting rod (1) bottom is provided with perching knife (9), and connecting rod (1) top is provided with sucker rod screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077651.6U CN203702089U (en) | 2014-02-24 | 2014-02-24 | Paraffin scrapping device for oil extraction pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077651.6U CN203702089U (en) | 2014-02-24 | 2014-02-24 | Paraffin scrapping device for oil extraction pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702089U true CN203702089U (en) | 2014-07-09 |
Family
ID=51052545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420077651.6U Expired - Fee Related CN203702089U (en) | 2014-02-24 | 2014-02-24 | Paraffin scrapping device for oil extraction pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702089U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104770A (en) * | 2018-01-19 | 2018-06-01 | 西南石油大学 | A kind of new wax removal apparatus for eliminating sludge suitable for oil flow production well |
| CN109538164A (en) * | 2019-01-04 | 2019-03-29 | 中国地质大学（武汉） | A kind of anti-sticking wax scraping apparatus of self-heating |
| CN112727400A (en) * | 2021-01-19 | 2021-04-30 | 孙昌杰 | Sleeve scraping device for sleeve scraping wax |
-
2014
- 2014-02-24 CN CN201420077651.6U patent/CN203702089U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104770A (en) * | 2018-01-19 | 2018-06-01 | 西南石油大学 | A kind of new wax removal apparatus for eliminating sludge suitable for oil flow production well |
| CN109538164A (en) * | 2019-01-04 | 2019-03-29 | 中国地质大学（武汉） | A kind of anti-sticking wax scraping apparatus of self-heating |
| CN112727400A (en) * | 2021-01-19 | 2021-04-30 | 孙昌杰 | Sleeve scraping device for sleeve scraping wax |
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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: 20140709 Termination date: 20150224 |
|
| EXPY | Termination of patent right or utility model |