CN101619648A - Expanding hydraulic anchor - Google Patents
Expanding hydraulic anchor Download PDFInfo
- Publication number
- CN101619648A CN101619648A CN200910016238A CN200910016238A CN101619648A CN 101619648 A CN101619648 A CN 101619648A CN 200910016238 A CN200910016238 A CN 200910016238A CN 200910016238 A CN200910016238 A CN 200910016238A CN 101619648 A CN101619648 A CN 101619648A
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- CN
- China
- Prior art keywords
- anchor
- anchor fluke
- rubber barrel
- jaw
- hoop spring
- 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.)
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Abstract
The invention relates to an expanding hydraulic anchor, comprising an upper joint, an anchor claw, a hoop spring, a rubber barrel, an inner pipe and a lower joint, wherein, the anchoring claw is embedded in the vertical groove of the rubber barrel in the form of a strip; transverse cogwheels are arranged outside the anchor claw and a radial groove is arranged inside the anchor jaw; the hoop spring is arranged in the radial groove; the hoop spring covers the rubber barrel; the anchor claw, the hoop spring and the rubber barrel are vulcanized and integrated to be sleeved outside the inner pipe; the upper part of the inner pipe is connected with the upper joint; the lower part of the inner pipe is connected with the lower joint; the lower part of the upper joint is buckled with the upper part of the anchor jaw; and the upper part of the lower joint is buckled with the lower part of the anchor jaw. Pressure is transmitted inside to result in the expansion of the rubber barrel; the anchor is pushed out and anchored on an oil well sleeve; when requiring no anchor, the oil pressure is balanced, the rubber barrel is retracted under the actions of the hoop spring and the elasticity thereof; and the anchor jaw is expanded with the rubber barrel without clearance fits of metals; therefore, the anchor jaw can work freely, and can be anchored and retracted; the work is reliable without blocking pipe columns; and the engineering accidents of the oil well can be prevented.
Description
One, technical field
The invention belongs to the tubing string anchoring device that oil well is used, 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 objective of the invention is to design expanding hydraulic anchor, the anchor fluke on its hydraulic anchor is regained easily, do not block tubing string, the oil well engineering accident can not take place.
The object of the present invention is achieved like this: be made up of top connection, anchor fluke, garter spring, packing element, interior pipe, lower contact, 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 invention has the beneficial effects as follows: 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 invention.
Accompanying drawing 2 is the sectional views after cutting open from A-A in the accompanying drawing 1.
Five, the specific embodiment
Describe below in conjunction with 1,2 pairs of embodiments of the invention of 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 present invention, 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 present invention 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, a kind of 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 |
|---|---|---|---|
| CN200910016238A CN101619648A (en) | 2009-06-15 | 2009-06-15 | Expanding hydraulic anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910016238A CN101619648A (en) | 2009-06-15 | 2009-06-15 | Expanding hydraulic anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101619648A true CN101619648A (en) | 2010-01-06 |
Family
ID=41513040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910016238A Pending CN101619648A (en) | 2009-06-15 | 2009-06-15 | Expanding hydraulic anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101619648A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107406A (en) * | 2021-04-25 | 2021-07-13 | 大庆市晟威机械制造有限公司 | Oil pipe tension anchor for stabilizing oil pipe |
-
2009
- 2009-06-15 CN CN200910016238A patent/CN101619648A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107406A (en) * | 2021-04-25 | 2021-07-13 | 大庆市晟威机械制造有限公司 | Oil pipe tension anchor for stabilizing oil pipe |
| CN113107406B (en) * | 2021-04-25 | 2021-10-29 | 大庆市晟威机械制造有限公司 | Oil pipe tension anchor for stabilizing oil pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100106 |