CN201013282Y - Novel prevention waterpower anchor - Google Patents
Novel prevention waterpower anchor Download PDFInfo
- Publication number
- CN201013282Y CN201013282Y CNU2007200891162U CN200720089116U CN201013282Y CN 201013282 Y CN201013282 Y CN 201013282Y CN U2007200891162 U CNU2007200891162 U CN U2007200891162U CN 200720089116 U CN200720089116 U CN 200720089116U CN 201013282 Y CN201013282 Y CN 201013282Y
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- CN
- China
- Prior art keywords
- anchor
- fluke
- hydraulic anchor
- hydraulic
- 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.)
- Expired - Fee Related
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Abstract
A novel protective hydraulic anchor is an anchorage tool to fix pipe strings in oil wells in oil field, and solves the problem of the prior art. The utility model consists of an upper joint, a stabilizing nail, an O-shaped ring, an inner central tube, a return spring, a hydraulic anchor body, a fluke, a muck bar and muck bar screws by means of connection. The upper joint is connected with the hydraulic anchor body through thread, and is sealed with the O-shaped ring and is fixed with the stabilizing nail. The utility model has the advantages that spacer is used to separate the fluke and the liquid in an oil pipe; the intracavity of the fluke will not scale, and is not seized easily; when the ring of the fluke fails to work properly, the liquid in the oil pipe will not leak; the hydraulic anchor can be ensured not to work in a pressure range by setting the elastic force of a spacer spring so that the tool will not be held up when going down; the force when the fluke is retracted is increased. The fluke retraction force equals to the summation of the pressure difference of an oil jacket, a hydraulic anchor spring and the spacer spring.
Description
One, technical field: the utility model relates in the oilfield oil well fixedly a kind of anchor tool of tubing string, especially a kind of novel protection hydraulic anchor
Two, background technology: present tubing string anchor tool hydraulic anchor is mainly by forming as lower member: hydraulic anchor anchor body, anchor fluke, back-moving spring etc. are formed.Following shortcoming usually appears in the hydraulic anchor of this structure after long-term work: 1, because anchor fluke contacts with liquid in the oil pipe, and fouling causes anchor fluke not regained; 2, owing to the restriction of hydraulic anchor processing technology, anchor fluke can only have sealing ring with the anchor body, easily causes leakage.3, the anchor fluke spring is owing to spatial constraints, and elastic force can not be very big, easily stretches out in the process of going into the well sometimes, causes to be hampered.
Three, summary of the invention: the purpose of this utility model provides a kind of novel protection hydraulic anchor, it has solved the problem that present technology exists, the purpose of this utility model is to realize like this, it is by top connection, steady nail, " O " type circle, inner central tube, back-moving spring, hydraulic anchor anchor body, the anchor fluke spring, anchor fluke, press strip, the press strip screw is formed by connecting, top connection is threaded with the anchor body, fix by the sealing of " O " type circle and by steady nail, inner central tube is installed in the hydraulic anchor anchor body, " O " type circle sealing by two ends, back-moving spring is installed therebetween, is filled with hydraulic oil in this cavity; Be separately installed with eight anchor flukes in eight the radial hole in the hydraulic anchor anchor, anchor fluke spring 7 is positioned at the anchor fluke blind hole by press strip and press strip screw location.
Operating principle: when hydraulic pressure in oil pipe is elevated to can compression reseting spring the time, inner central tube moves down, and the isolation hydraulic oil that is sealed between anchor body and the central tube enters in the anchor fluke chamber, and anchor fluke is ejected.When the pressure in the oil pipe reduced, central tube moved under the effect of casing pressure and spacer spring, and anchor fluke is regained.
Effect of the present utility model: the one, insulating liquid separates liquid in anchor fluke and the oil pipe, and non-scaling in the anchor fluke chamber is difficult for blocking; The 2nd, when the sealing ring of anchor fluke lost efficacy, leakage appearred in the liquid that can not in the oil pipe; The 3rd, can set the elastic force size of spacer spring, guarantee that hydraulic anchor is not worked in the certain pressure scope, thereby be hampered situation when having avoided being lowered to instrument; The 4th, strength strengthened when anchor fluke was regained.Anchor fluke reclaims power=oil jacket pressure reduction+hydraulic anchor spring+spacer spring.
Four, description of drawings: Fig. 1 is a kind of structural representation of novel protection hydraulic anchor, among the figure 1, top connection 2, surely follow closely 3, " O " type circle 4, inner central tube 5, back-moving spring 6, hydraulic anchor anchor body 7, anchor fluke spring 8, anchor fluke 9, press strip 10, press strip screw
Five, the specific embodiment: in Fig. 1, top connection 1 is threaded with hydraulic anchor anchor body 6, fixes by 3 sealings of " O " type circle and by steady nail 2; Inner central tube 4 is installed in the hydraulic anchor anchor body 6, and " O " type circle sealing by two ends is equipped with back-moving spring 5 therebetween, is filled with hydraulic oil in this cavity; Be separately installed with eight anchor flukes 8 in hydraulic anchor anchor body 6 interior eight radial holes, anchor fluke spring 7 is positioned at the anchor fluke blind hole and is located by press strip 9 and press strip screw 10.
Claims (3)
1. novel protection hydraulic anchor, it is to be formed by connecting by top connection (1), steady nail (2), " O " type circle (3), inner central tube (4), back-moving spring (5), hydraulic anchor anchor body (6), anchor fluke spring (7), anchor fluke (8), press strip (9), press strip screw (10), it is characterized in that: top connection (1) is threaded with hydraulic anchor anchor body (6), by " O " type circle (3) sealing and fixing by steady nail (2).
2. a kind of novel protection hydraulic anchor according to claim 1 is characterized in that: inner central tube (4) is installed in the hydraulic anchor anchor body (6), and " O " type circle sealing by two ends is equipped with back-moving spring (5) therebetween, is filled with hydraulic oil in this cavity.
3. a kind of novel protection hydraulic anchor according to claim 1, it is characterized in that: be separately installed with eight anchor flukes (8) in interior eight radial holes of hydraulic anchor anchor body (6), anchor fluke spring (7) is positioned at anchor fluke (8) blind hole and is located by press strip (9) and press strip screw (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200891162U CN201013282Y (en) | 2007-01-08 | 2007-01-08 | Novel prevention waterpower anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200891162U CN201013282Y (en) | 2007-01-08 | 2007-01-08 | Novel prevention waterpower anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201013282Y true CN201013282Y (en) | 2008-01-30 |
Family
ID=39025068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200891162U Expired - Fee Related CN201013282Y (en) | 2007-01-08 | 2007-01-08 | Novel prevention waterpower anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201013282Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368636A (en) * | 2016-11-14 | 2017-02-01 | 中国石油化工股份有限公司 | Hydraulic cylinder type hydraulic anchor |
| CN108868674A (en) * | 2017-05-16 | 2018-11-23 | 中国石油化工股份有限公司 | Negative pressure unfreezing antiscale hydraulic anchor |
| CN109441382A (en) * | 2018-12-28 | 2019-03-08 | 易鲁川 | A kind of hydraulic anchor |
| CN115045627A (en) * | 2022-05-11 | 2022-09-13 | 大庆宏测技术服务有限公司 | Hydraulic anchor capable of improving self-righting effect |
-
2007
- 2007-01-08 CN CNU2007200891162U patent/CN201013282Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368636A (en) * | 2016-11-14 | 2017-02-01 | 中国石油化工股份有限公司 | Hydraulic cylinder type hydraulic anchor |
| CN108868674A (en) * | 2017-05-16 | 2018-11-23 | 中国石油化工股份有限公司 | Negative pressure unfreezing antiscale hydraulic anchor |
| CN109441382A (en) * | 2018-12-28 | 2019-03-08 | 易鲁川 | A kind of hydraulic anchor |
| CN115045627A (en) * | 2022-05-11 | 2022-09-13 | 大庆宏测技术服务有限公司 | Hydraulic anchor capable of improving self-righting effect |
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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: 20080130 |