CN2123605U - Hydraulic anchorage device - Google Patents
Hydraulic anchorage device Download PDFInfo
- Publication number
- CN2123605U CN2123605U CN 92225014 CN92225014U CN2123605U CN 2123605 U CN2123605 U CN 2123605U CN 92225014 CN92225014 CN 92225014 CN 92225014 U CN92225014 U CN 92225014U CN 2123605 U CN2123605 U CN 2123605U
- Authority
- CN
- China
- Prior art keywords
- anchor
- anchor tooth
- piston
- elastic rubber
- rubber ring
- 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.)
- Granted
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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a down-hole hydraulic anchorage device used for oil gas reservoir yield increasing construction, comprising an anchor body, a guard ring, a piston, an anchor tooth, an elastic rubber ring, etc. The elastic rubber ring is sheathed at the two sides of the anchor tooth block, operation liquid can be pumped into a pipe column and can act on the piston, so the piston can push the anchor tooth until clinch on the sleeve wall when working. After working, the oil sleeve annular pressure is balanced, the elastic rubber ring can be safely retracted under the function of the anchor tooth block, and the utility model can not be affected by corrosive medium and sand blocking.
Description
The utility model relates to a kind of waterpower anchoring device.
The industrialness exploitation of low-permeability oil gas reservoir be unable to do without effective well stimulation, and the seal degree of packer is the principal element of influence construction success or failure in the fracture acidizing construction.In the work progress,,, influence the packer sealing performance because the temperature of down-hole, pressure etc. cause operating tool string to move and be crooked especially at deep-well.For this reason, additional waterpower anchoring device on packer top moves and bending with elimination or minimizing tubing string, improves the packer sealing performance.But existing waterpower anchoring device, what its anchor tooth adopted is the cylinder tooth form, and the spring of its flexible inner portion comes transfer function power.Because the underground work environment is abominable, spring is subjected to factor affecting such as temperature, corrosive medium and sand card or spring self manufacturing, causes camber of spring, fracture or stuck easily, makes the anchor tooth be difficult for withdrawal and maybe can not sting tight casing wall, and the influence construction is carried out smoothly.
The purpose of this utility model is to provide a kind of improved waterpower anchoring device, and it can prevent effectively that the anchor tooth is difficult for withdrawal and maybe can not stings tight casing wall, thereby overcomes the defective that exists in the prior art.
The purpose of this utility model is achieved in that the anchor tooth makes tabular tooth form, puts oil resistant, corrosion-resistant elastic caoutchouc circle at its two ends.When construction, in tubing string, pump into operation liquid, highly pressurised liquid acts on the interior piston area of this device, and piston forward is moved, and promotes anchor tooth block and is stuck on the casing wall.Pressure is high more, and the anchor tooth is stung tightly more, and it is mobile and crooked that packer is not produced.After the end of job, oil pipe and casing annulus pressure balance, the anchor tooth is regained under the effect of elastic caoutchouc circle, removes grappling, thus assurance anchor tooth is stung tight tube wall and safe retraction.
Owing to adopt technique scheme, institute is so that grappling is simple and reliable, simultaneously because its basic structure is different from prior art, so the utility model do not have specific (special) requirements to downhole temperature, corrosive medium and sand card article spare, and easier realization anchor tooth is stung tight sleeve pipe and withdrawal.
Fig. 1. waterpower grappling structure drawing of device
1. anchor body 2. guard rings 3. elastic rings 4. anchor teeth
5. piston 6. sealing rings 7. screws 8. sheaths
As Fig. 1, be set with upper and lower 2 guard rings 2, anchor tooth 3, sheath 8 on anchor body 1 outer wall, lap-joint is provided with elastic ring 3 between guard ring 2 and sheath 8 and anchor tooth 4, thereby the anchor tooth block two ends all are provided with elastic ring.Anchor body 1 wall in the anchor tooth 4 is provided with piston 5 and sealing ring 6, and sheath 8 is fixed on the anchor body 1 by screw 7.
The utility model is connected on the operating tool string, is lowered in the pit shaft.During job execution, by pumping into operation liquid in the tubing string, highly pressurised liquid acts on the piston 5 by anchor body 1, piston 5 is moved forward, and promotion anchor tooth 4 stretches out and is stuck on the casing wall, and pressure is high more, anchor tooth 4 is stung tightly more, and it is mobile and crooked that packer is not produced, and sealing is reliable.After the end of job, oil jacket annular pressure balance, anchor tooth 4 is regained under the elastic force effect of elastic caoutchouc circle 3, and construction operation is finished in the deblocking grappling, can guarantee that anchor tooth 4 stings tight tube wall and safe retraction.
Claims (3)
1, a kind of waterpower anchoring device comprises that anchor body, anchor tooth, guard ring, piston, sealing ring, screw, sheath constitute, and is characterized in that: anchor tooth block 4 is housed on the anchor body 1, is with elastic caoutchouc circle 3 at anchor tooth block 4 two ends.
2, waterpower anchoring device according to claim 1 is characterized in that: anchor tooth block 4 is tabular tooth form.
3, waterpower anchoring device according to claim 1 is characterized in that: be provided with piston 5 in anchor tooth block 4 inboards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92225014 CN2123605U (en) | 1992-06-20 | 1992-06-20 | Hydraulic anchorage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92225014 CN2123605U (en) | 1992-06-20 | 1992-06-20 | Hydraulic anchorage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2123605U true CN2123605U (en) | 1992-12-02 |
Family
ID=4967323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92225014 Granted CN2123605U (en) | 1992-06-20 | 1992-06-20 | Hydraulic anchorage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2123605U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586455B (en) * | 2009-06-15 | 2012-10-10 | 东营市兆鑫工贸有限责任公司 | Anchoring expansion type packer |
| 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 |
-
1992
- 1992-06-20 CN CN 92225014 patent/CN2123605U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586455B (en) * | 2009-06-15 | 2012-10-10 | 东营市兆鑫工贸有限责任公司 | Anchoring expansion type packer |
| 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 |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |