CN202117602U - Hydraulic anchor for continuous oil pipe - Google Patents
Hydraulic anchor for continuous oil pipe Download PDFInfo
- Publication number
- CN202117602U CN202117602U CN2011202421929U CN201120242192U CN202117602U CN 202117602 U CN202117602 U CN 202117602U CN 2011202421929 U CN2011202421929 U CN 2011202421929U CN 201120242192 U CN201120242192 U CN 201120242192U CN 202117602 U CN202117602 U CN 202117602U
- Authority
- CN
- China
- Prior art keywords
- slips
- cylinder sleeve
- slip
- oil pipe
- continuous oil
- 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
The utility model relates to an anchor, in particular to a hydraulic anchor for a continuous oil pipe. The hydraulic anchor for the continuous oil pipe comprises an upper joint, a center pipe and a lower joint which are sequentially connected. A slip is arranged at the junction of the upper joint and the center pipe. The slip is provided with a radial return spring. The slip is connected with a cylinder sleeve through a slip bowl. The hydraulic anchor for the continuous oil pipe is characterized in that the hydraulic anchor for the continuous oil pipe also comprises an axial return spring arranged in a cavity between the center pipe and the cylinder sleeve; the diameters of the upper joint and the lower joint are greater than the diameters of the slip and the cylinder sleeve; and the lower joint is provided with an axial opening groove along the circumferential direction. The hydraulic anchor for the continuous oil pipe overcomes the defects in the prior art, and the slip can be reliably recovered and can repeatedly work in the well.
Description
Technical field
The utility model relates to anchor, particularly a kind of coiled tubing Hydraulic Anchorage device.
Background technology
Conventional tubing string anchor adopts hydraulic anchor, and the pressurization ram's horn stretches out and is stuck on the sleeve pipe in the tubing string, and anchor fluke reclaims after the pressure release.Drag in the pressing crack construction at coiled tubing, require repeatedly grappling of anchor, reclaim reliably.Anchor fluke formula anchor tool anchor fluke serious wear when repeatedly using, and anchor fluke possibly bear larger axis after power, and can there be certain risk in the recovery of anchor fluke, does not reach the reusable requirement of coiled tubing pressure break.
Summary of the invention
The technical problem that the utility model will solve provides a kind of coiled tubing Hydraulic Anchorage device, to solve the defective that exists in the prior art, makes slips reclaim reliably, in well, can repeatedly repeat work.
The technical scheme of the utility model is: a kind of coiled tubing Hydraulic Anchorage device; Comprise the top connection, central tube and the lower contact that connect successively; Top connection and central tube junction are provided with slips; Slips is provided with radially back-moving spring, and slips links to each other with cylinder sleeve through slip spider, it is characterized in that: also comprise being arranged at the axial back-moving spring in the cavity between central tube and the cylinder sleeve.
The diameter of said top connection and lower contact is bigger than the diameter of slips and cylinder sleeve.
Said lower contact is circumferentially with the trough of axial unlatching.
The technique effect of the utility model is:
1, slips reclaims reliable.The utility model can be through setting up axial back-moving spring, and lower contact diameter and/or be circumferentially with the multiple measure of the trough of axial unlatching in lower contact in the expansion has guaranteed the reliable recovery of slips.
2, in well, can repeatedly repeat work.The utility model makes loss reduction, durability improve owing to possess reliable recovering effect, can repeatedly use, and provides cost savings.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the utility model is further specified:
Fig. 1 is the utility model structural representation.
Reference numeral is following:
1. top connection, 2. slips, 3. radially back-moving spring, 4. slip spider, 5. central tube, 6. axially back-moving spring, 7. cylinder sleeve, 8. lower contact, 9. trough.
The specific embodiment
The utility model patent relates to oil gas field stimulation technology field, is one of underground work instrument important in oil, the separate stratum fracfturing of gas water horizontal well, the acidizing treatment operation.The utility model is applied to the free fracturing technology of horizontal well coiled tubing.
The utility model adopts the one-way slip piece to bear down axial force; Upper lifting pipe post slip segment can be at axially back-moving spring 6 and the radially automatic down recovery of effect of back-moving spring 3; Tubing string can drag that (the utility model is mainly used in fractured horizontal well back and forth at horizontal segment; Drag with coiled tubing), and can repeat repeatedly to use.
The utility model structure is following:
A kind of coiled tubing Hydraulic Anchorage device; Comprise the top connection 1, central tube 5 and the lower contact 8 that connect successively; Top connection 1 is provided with slips 2 with central tube 5 junctions; Slips 2 is provided with radially back-moving spring 3, and slips 2 links to each other with cylinder sleeve 7 through slip spider 4, also comprises being arranged at the axial back-moving spring 6 in the cavity between central tube 5 and the cylinder sleeve 7.
The diameter of comparable slips 2 of the diameter of top connection 1 and lower contact 8 and cylinder sleeve 7 is big, in order to protection slips 2 and cylinder sleeve 7.
The utility model method for using is following:
With the utility model together with tubing string by the coiled tubing G.I.H.Because the diameter of upper and lower joint is higher than slips 2 and cylinder sleeve 7, causes slips 2 accidents to be stretched out to be stuck in tubing string is hampered so in the process of transferring, there is the protection of top connection 1, lower contact 8 to let slips can not receive influence such as hanging, touch; And can relax the influence of impact such as hydraulic pressure down in the axial effect of back-moving spring 6 to slips 2.After tubing string is transferred to the position, promote to move on the slips 2 at the chock pressure difference effect lower slips seat of ejector 4, extend radially out at the effect lower slips 2 of top connection 1 conical surface and be stuck on the casing wall, anchoring string prevents that tubing string from moving down.When construction finishes, stop pump and annotate the upper lifting pipe post; Slips 2 resets under the effect of back-moving spring radially 3 and axial back-moving spring 6, and tubing string can upper and lowerly move, and the Hydraulic Anchorage device can repeat repeatedly to use; Wherein, radially the effect of back-moving spring 3 is to let slips be close on the conical surface of top connection 1.
The utlity model has following characteristic:
Characteristic one: utilize the pretightning force of axial back-moving spring 6 can prevent the utility model in going down process owing to block, bump, factor such as hydraulic shock makes and moves on the slips 2, and tubing string is hampered midway.Have only pump fluid injection body in tubing string, under the throttling action of instruments such as sandblaster, make the inside and outside pressure reduction that produces of tubing string; When overcoming the elastic force of axial back-moving spring 6 by hydraulic action; Promote slips 2 and move on axially, under the effect of the top connection conical surface, extend radially out and be stuck on the casing wall anchoring string; And when stopping pump fluid injection body in the tubing string, tubing string is inside and outside not to have had pressure reduction, hydraulic action to disappear; The upper lifting pipe post; Under the elastic force effect of back-moving spring 6, slips 2 is returned to original position, and radially reclaims at the effect lower slips 2 of back-moving spring 3 radially, this moment, tubing string lost the grappling effect.
Characteristic two: top connection 1; The diameter of lower contact 8 is bigger than the diameter of slips 2 and cylinder sleeve 7, and when horizontal segment dragged back and forth, upper and lower joint can be protected slips 2 and cylinder sleeve 7; Avoid slips 2 and cylinder sleeve 7 to contact, and then avoid the slips accident to stretch out being stuck on the casing wall with casing wall.
Characteristic three: lower contact 8 circumferentially is designed with the trough 9 that several roads are axially opened; Trough 9 is used for preventing to have between lower contact 8 and the cylinder sleeve 7 sand to pile up when coiled tubing upwards drags;, horizontal segment can prevent that sand setting between lower contact 8 and the cylinder sleeve 7 from causing slips 2 to reclaim not exclusively (there have sand that cylinder sleeve 7 is reclaimed between lower contact 8 and the cylinder sleeve 7 to be not in place, and slips 2 just can reclaim fully after having only cylinder sleeve 7 to reclaim to put in place) when dragging.
Claims (3)
1. coiled tubing Hydraulic Anchorage device; Comprise the top connection (1), central tube (5) and the lower contact (8) that connect successively; Top connection (1) is provided with slips (2) with central tube (5) junction; Slips (2) is provided with radially back-moving spring (3), and slips (2) links to each other with cylinder sleeve (7) through slip spider (4), it is characterized in that: also comprise being arranged at the axial back-moving spring (6) in the cavity between central tube (5) and the cylinder sleeve (7).
2. a kind of coiled tubing Hydraulic Anchorage device according to claim 1 is characterized in that: the diameter of said top connection (1) and lower contact (8) is bigger than the diameter of slips (2) and cylinder sleeve (7).
3. a kind of coiled tubing Hydraulic Anchorage device according to claim 1 and 2 is characterized in that: said lower contact (8) is circumferentially with the trough (9) of axial unlatching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202421929U CN202117602U (en) | 2011-07-11 | 2011-07-11 | Hydraulic anchor for continuous oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202421929U CN202117602U (en) | 2011-07-11 | 2011-07-11 | Hydraulic anchor for continuous oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202117602U true CN202117602U (en) | 2012-01-18 |
Family
ID=45458675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202421929U Expired - Fee Related CN202117602U (en) | 2011-07-11 | 2011-07-11 | Hydraulic anchor for continuous oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202117602U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213850A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气集团公司 | Connector for coiled tubing and method for improving connection strength |
| CN104790903A (en) * | 2015-03-18 | 2015-07-22 | 北京众博达石油科技有限公司 | Spanning type packer capable of achieving repeated setting |
| CN105156032A (en) * | 2015-07-07 | 2015-12-16 | 西南石油大学 | Slip type tool face stabilizer |
-
2011
- 2011-07-11 CN CN2011202421929U patent/CN202117602U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213850A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气集团公司 | Connector for coiled tubing and method for improving connection strength |
| CN104790903A (en) * | 2015-03-18 | 2015-07-22 | 北京众博达石油科技有限公司 | Spanning type packer capable of achieving repeated setting |
| CN104790903B (en) * | 2015-03-18 | 2017-11-03 | 北京众博达石油科技有限公司 | Straddle type packer capable of repeatedly setting |
| CN105156032A (en) * | 2015-07-07 | 2015-12-16 | 西南石油大学 | Slip type tool face stabilizer |
| CN105156032B (en) * | 2015-07-07 | 2017-05-31 | 西南石油大学 | A kind of slip-type tool-face stabilizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20150711 |
|
| EXPY | Termination of patent right or utility model |