CN201443324U - Expansion waterpower anchor - Google Patents
Expansion waterpower anchor Download PDFInfo
- Publication number
- CN201443324U CN201443324U CN2009200278399U CN200920027839U CN201443324U CN 201443324 U CN201443324 U CN 201443324U CN 2009200278399 U CN2009200278399 U CN 2009200278399U CN 200920027839 U CN200920027839 U CN 200920027839U CN 201443324 U CN201443324 U CN 201443324U
- Authority
- CN
- China
- Prior art keywords
- anchor
- anchor claw
- rubber cylinder
- anchor fluke
- claw
- 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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- Piles And Underground Anchors (AREA)
Abstract
Disclosed is an expansion waterpower anchor which consists of an upper connector, an anchor claw, a hoop spring, a rubber cylinder, an inner pipe and a lower connector. The anchor claw in a strip shape is embedded inside a longitudinal groove of the rubber cylinder, transverse teeth are arranged on the outer side of the anchor claw, a radial groove is arranged on the inner side of the anchor claw, the hoop spring disposed inside the radial groove wraps the rubber cylinder; the anchor claw, the hoop spring and the rubber cylinder are vulcanized to be a whole and sleeved outside the inner pipe; the upper portion of the inner pipe is connected with the upper connector, the lower portion of the inner pipe is connected with the lower connector, the upper portion of the anchor claw is fastened by the lower portion of the upper connector, the lower portion of the anchor claw is fastened by the upper portion of the lower connector. Pressure is transmitted inside to enable the rubber cylinder to expand, the anchor claw is pushed out and anchored on an oil well sleeve; and oil well pressure is balanced when anchoring is not in need, the rubber cylinder retracts under the action of the hoop spring and self elastic force, the anchor claw expands along with the rubber cylinder. As no clearance fit exists among metals, the anchor claw can work smoothly; the waterpower anchor is capable of anchoring, retracting and working reliably without blocking a pipe column, and is capable of avoiding engineering accident of the oil well.
Description
One, technical field
The utility model belongs to the tubing string anchoring device that oil well is used, and is a kind of expanding hydraulic anchor.
Two, background technology
During oil well oil-pumping, fluid column is loaded with on oil pipe and sucker rod to change with the oil pumper up-down stroke and replace transfers, makes oil pipe elongation shortening, causes the pump efficiency of pumping low, the oil pipe well of threading off.For fear of the appearance of the problems referred to above, hydraulic anchor has been used at the scene, is used for fixing oil pipe, prevents that oil pipe is flexible.When the oil-water well technology that has is constructed, cause downhole tool damages such as packer, also will connect hydraulic anchor at the instrument first line of a couplet in order to prevent the tubing string play.But existing hydraulic anchor is by the anchor fluke grappling, pressure reduction by the anchor fluke two ends makes anchor fluke stretch out anchoring string, because have seal request between anchor fluke and the body, so anchor fluke is cylindrical, the assemblage gap between anchor fluke and the body is very little, in well after the long-term work owing to reasons such as corrosion, fouling, sand settings, anchor fluke is not easy to regain, and causes anchor fluke card tubing string, and the interior tubing string of well can not be proposed, can't carry out the oil well operation, cause oil well generation engineering accident.
Three, summary of the invention
The purpose of this utility model is the design expanding hydraulic anchor, and the anchor fluke on its hydraulic anchor is regained easily, does not block tubing string, the oil well engineering accident can not take place.
The purpose of this utility model is achieved in that by top connection, anchor fluke, garter spring, packing element, interior pipe, lower contact to be formed, anchor fluke slivering shape is embedded in the longitudinal fluting of packing element, there are horizontal teeth in the anchor fluke outside, there is radial groove the anchor fluke inboard, garter spring is arranged in the radial groove, garter spring encases packing element, anchor fluke, garter spring, packing element are sulfided into one and are sleeved on outside the interior pipe, interior pipe top is connected with top connection, interior pipe bottom is connected with lower contact, the top connection bottom fastens anchor fluke top, and lower contact top fastens the anchor fluke bottom.
Sand retaining ring is installed in top connection lower surface and anchor fluke contact position.
Sand retaining ring is down installed in lower contact upper surface and anchor fluke contact position.
The beneficial effects of the utility model are: anchor fluke is expanded with packing element, does not have intermetallic matched in clearance, and therefore, anchor fluke work freely can grappling, can regain, and reliable operation is not blocked tubing string, can avoid oil well generation engineering accident.
Four, description of drawings
Accompanying drawing 1 is an assembling front view of the present utility model.
Accompanying drawing 2 is the sectional views after cutting open from A-A in the accompanying drawing 1.
Five, the specific embodiment
1,2 couples of embodiment of the present utility model describe below in conjunction with accompanying drawing.
By top connection 1, last sand retaining ring 2, anchor fluke 3, garter spring 4, packing element 5, interior pipe 6, following sand retaining ring 7, lower contact 8 is formed, anchor fluke 3 slivering shapes are embedded in the longitudinal fluting of packing element 5, there are horizontal teeth in anchor fluke 3 outsides, be used for the grappling sleeve pipe, there is radial groove anchor fluke 3 inboards, garter spring 4 is arranged in the radial groove, garter spring 4 encases packing element 5, anchor fluke 3, garter spring 4, packing element 5 is sulfided into one and is sleeved on outside the interior pipe 6, and interior pipe 6 tops are connected with top connection 1, and interior pipe 6 bottoms are connected with lower contact 8, top connection 1 bottom fastens anchor fluke 3 tops, anchor fluke 3 tops can not come off, and lower contact 8 tops fasten anchor fluke 3 bottoms, and anchor fluke 3 bottoms can not come off.Sand retaining ring 2 is installed in top connection 1 lower surface and anchor fluke 3 contact positions.Sand retaining ring 7 is down installed in lower contact 8 upper surfaces and anchor fluke 3 contact positions.On the interior pipe 6 linked hole is arranged.Garter spring 4 is annular shape, helps packing element 5 to shrink.
On tubing string, when the tubing string internal pressure raise, the linked hole of pressure on interior pipe imported under the utility model, made packing element 5 expansions, and anchor fluke 3 is released, and was anchored on the oil well casing, and oil pipe is maintained static, and avoided the flexible adverse consequences that causes of oil pipe.When not needing grappling, the oil well pressure balance, packing element 5 is regained under garter spring 4 and self elastic force effect, and anchor fluke 3 is along with withdrawal, and tubing string loses grappling, tubing string can be proposed smoothly.
The utility model also can be connected on the packer, under pressure, packer work, hydraulic anchor grappling simultaneously maintains static packer, finishes the operation of oil well different process.
Claims (3)
1. expanding hydraulic anchor, it is characterized in that: by top connection (1), anchor fluke (3), garter spring (4), packing element (5), interior pipe (6), lower contact (8) is formed, anchor fluke (3) slivering shape is embedded in the longitudinal fluting of packing element (5), there are horizontal teeth in anchor fluke (3) outside, there is radial groove anchor fluke (3) inboard, garter spring (4) is arranged in the radial groove, garter spring (4) encases packing element (5), anchor fluke (3), garter spring (4), packing element (5) is sulfided into one and is sleeved on outside the interior pipe (6), interior pipe (6) top is connected with top connection (1), interior pipe (6) bottom is connected with lower contact (8), top connection (1) bottom fastens anchor fluke (3) top, and lower contact (8) top fastens anchor fluke (3) bottom.
2. expanding hydraulic anchor according to claim 1 is characterized in that: sand retaining ring (2) is installed in top connection (1) lower surface and anchor fluke (3) contact position.
3. expanding hydraulic anchor according to claim 1 is characterized in that: sand retaining ring (7) is down installed in lower contact (8) upper surface and anchor fluke (3) contact position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200278399U CN201443324U (en) | 2009-06-15 | 2009-06-15 | Expansion waterpower anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200278399U CN201443324U (en) | 2009-06-15 | 2009-06-15 | Expansion waterpower anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201443324U true CN201443324U (en) | 2010-04-28 |
Family
ID=42548000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200278399U Expired - Fee Related CN201443324U (en) | 2009-06-15 | 2009-06-15 | Expansion waterpower anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201443324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218006A (en) * | 2017-07-19 | 2017-09-29 | 铁岭曲氏石油技术开发服务有限公司 | Hydraulic anchor |
-
2009
- 2009-06-15 CN CN2009200278399U patent/CN201443324U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218006A (en) * | 2017-07-19 | 2017-09-29 | 铁岭曲氏石油技术开发服务有限公司 | Hydraulic anchor |
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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: 20100428 Termination date: 20110615 |