CN201614925U - Spiral-flow type automatic desilting oil extraction pipe - Google Patents
Spiral-flow type automatic desilting oil extraction pipe Download PDFInfo
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- CN201614925U CN201614925U CN2010201429685U CN201020142968U CN201614925U CN 201614925 U CN201614925 U CN 201614925U CN 2010201429685 U CN2010201429685 U CN 2010201429685U CN 201020142968 U CN201020142968 U CN 201020142968U CN 201614925 U CN201614925 U CN 201614925U
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- pipe
- spiral
- flow type
- oil extraction
- type automatic
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Abstract
The utility model belongs to the technical field of oil extraction equipment and particularly relates to a spiral-flow type automatic desilting oil extraction pipe. The spiral-flow type automatic desilting oil extraction pipe comprises an inner pipe, a silt filter screen and an outer pipe, wherein the silt filter screen is sheathed outside the inner pipe; and the outer pipe is sheathed outside the silt filter screen. The spiral-flow type automatic desilting oil extraction pipe is characterized in that a hollow cavity is formed between the outer pipe and the silt filter screen; the outer pipe consists of a pipe wall, a round-table shaped upper fixing end and a round-table shaped lower fixing end; the pipe wall is provided with an oil hole that is the semi-conical heave along the longitudinal direction; the round-table shaped upper fixing end is fixedly connected with the upper tip of the pipe wall; the round-table shaped lower fixing end is fixedly connected with the lower tip of the pipe wall; the oil hole is spirally arranged; 4-8 desilting grooves are arranged on the side surface of the round-table shaped lower fixing end of the outer pipe and are arranged downward vertically; and the upper ends of the desilting grooves are communicated with the hollow cavity. The spiral-flow type automatic desilting oil extraction pipe has simple structure and long service life, reduces the times of well repair, saves the maintenance cost, lowers the production cost, improves the production efficiency and improves the economic benefit.
Description
Technical field
The utility model belongs to the oil exploration equipment technical field, and particularly a kind of spiral-flow type is arranged husky flow string automatically.
Background technology
In the oil exploitation process, the oil and the grains of sand enter flow string simultaneously, easily cause oil pump, accessory and flow string seriously to stop up, and causing oil pump, accessory and flow string to damage can not work.The flow string that present most of oil recovery enterprise uses is direct current mesh-type flow string, and inner and outer pipe is equipped with oilhole, and the protective screening between the inner and outer pipe is stainless steel seam formula net, ripple net etc.Because the oilhole discharge area of outer pillar is little, oil, water and the grains of sand directly contact with protective screening is vertical by oilhole, cause serious obstruction, make oil can not carry out flow string, and the enterprise that causes recovering the oil stops production and keeps in repair, and cause the certain economic loss to enterprise.
Summary of the invention
The purpose of this utility model provides a kind of flow string obstruction, husky spiral-flow type of automatic row of preventing and arranges husky flow string automatically.
The purpose of this utility model realizes by following technical proposals:
A kind of spiral-flow type of the present utility model is arranged husky flow string automatically, comprise interior pipe, the sand filtering net of tube outside in being enclosed within, be enclosed within the outer tube of described sand filtering net outside, it is characterized in that forming between described outer tube and the described sand filtering net cavity, described outer tube vertically is the tube wall of the oilhole of half cone-shaped projection by being provided with, the upper end of the tube wall fixed end on the truncated cone-shaped that connects that fixes therewith, form with the lower end of the described tube wall fixed end that fixes under the truncated cone-shaped that is connected, the shape setting in the shape of a spiral of described oilhole, the side surface of fixed end is provided with sediment ejection trough under the truncated cone-shaped of described outer tube, and this sediment ejection trough is for vertically downward and the groove that communicates with described cavity of upper end.
The quantity of described sediment ejection trough is 4-8.
Spiral-flow type of the present utility model is arranged the characteristics that husky flow string has automatically: because the vertical half cone-shaped projection oilhole that has adopted helical form to be provided with on the outer tube wall of flow string, make the oil that enters in the flow string cavity by vertical half cone-shaped projection oilhole under the effect of negative pressure, form eddy flow, increased the oil-feed area, reduced oil flow resistance, improved oil production, reduce impact simultaneously, prolonged the application life of sand filtering net sand filtering net.Enter the interior silt of cavity under the effect of gravity, flow to fixed end place under the truncated cone-shaped, then outside sediment ejection trough is discharged flow string along outer tube wall.Avoid the generation of silt clogging, prolonged the application life of flow string.
The utility model is simple in structure, and be 4 times of existing flow string application life, reduces the well workover number of times, saves maintenance cost, reduced cost of production, improved productivity ratio, improved economic benefit.
Description of drawings
Fig. 1 is a structural representation of the present utility model
The specific embodiment
Given embodiment further specifies the specific embodiment of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of spiral-flow type of the present utility model is arranged husky flow string automatically, pipe 1 in comprising, the sand filtering net 3 of pipe 1 outside in being enclosed within, be enclosed within the outer tube of described sand filtering net 3 outsides, it is characterized in that forming between described outer tube 4 and the described sand filtering net 3 cavity, described outer tube 4 vertically is the tube wall of the oilhole 5 of half cone-shaped projection by being provided with, the upper end of the tube wall fixed end 2 on the truncated cone-shaped that connects that fixes therewith, form with the lower end of the described tube wall fixed end 6 that fixes under the truncated cone-shaped that is connected, the shape setting in the shape of a spiral of described oilhole 5, the side surface of fixed end 6 is provided with sediment ejection trough 7 under the truncated cone-shaped of described outer tube 4, and this sediment ejection trough 7 is for vertically downward and the groove that communicates with described cavity of upper end.
The quantity of described sediment ejection trough 7 is 4-8.
The operating principle that spiral-flow type of the present utility model is arranged husky flow string automatically is:
After oil and silt enter in the flow string cavity by vertical half cone-shaped projection oilhole 5, under the effect of the negative pressure that oil pump causes, form eddy flow, oil passes through sand filtering net 3 in rotation, and in the pipe 1, is drawn out of flow string then in the oilhole of interior pipe 1 enters.Enter the interior silt of cavity under the effect of gravity, flow to fixed end 6 places under the truncated cone-shaped, discharge outside the flow strings from sediment ejection trough 7 then along outer tube wall.
The utility model is simple in structure, and be 4 times of existing flow string application life, reduced the well workover number of times, saves maintenance cost, has reduced cost of production, has improved productivity ratio, has improved economic benefit.
Claims (2)
1. a spiral-flow type is arranged husky flow string automatically, comprise interior pipe, the sand filtering net of tube outside in being enclosed within, be enclosed within the outer tube of described sand filtering net outside, it is characterized in that forming between described outer tube and the described sand filtering net cavity, described outer tube vertically is the tube wall of the oilhole of half cone-shaped projection by being provided with, the upper end of the tube wall fixed end on the truncated cone-shaped that connects that fixes therewith, form with the lower end of the described tube wall fixed end that fixes under the truncated cone-shaped that is connected, the shape setting in the shape of a spiral of described oilhole, the side surface of fixed end is provided with sediment ejection trough under the truncated cone-shaped of described outer tube, and this sediment ejection trough is for vertically downward and the groove that communicates with described cavity of upper end.
2. spiral-flow type according to claim 1 is arranged husky flow string automatically, and the quantity that it is characterized in that described sediment ejection trough is 4-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201429685U CN201614925U (en) | 2010-03-24 | 2010-03-24 | Spiral-flow type automatic desilting oil extraction pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201429685U CN201614925U (en) | 2010-03-24 | 2010-03-24 | Spiral-flow type automatic desilting oil extraction pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201614925U true CN201614925U (en) | 2010-10-27 |
Family
ID=43001295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201429685U Expired - Fee Related CN201614925U (en) | 2010-03-24 | 2010-03-24 | Spiral-flow type automatic desilting oil extraction pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201614925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639989A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Spiral channel sand filtering pipe |
-
2010
- 2010-03-24 CN CN2010201429685U patent/CN201614925U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639989A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Spiral channel sand filtering pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20120324 |