CN2674076Y - Tensile means for tubing - Google Patents
Tensile means for tubing Download PDFInfo
- Publication number
- CN2674076Y CN2674076Y CN 200420038110 CN200420038110U CN2674076Y CN 2674076 Y CN2674076 Y CN 2674076Y CN 200420038110 CN200420038110 CN 200420038110 CN 200420038110 U CN200420038110 U CN 200420038110U CN 2674076 Y CN2674076 Y CN 2674076Y
- Authority
- CN
- China
- Prior art keywords
- center tube
- safety
- upper center
- disanchoring
- pipe nipple
- 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
The utility model discloses an oil pipe stretching machine which comprises an upper joint, a lower joint, an upper center pipe and a lower center pipe and a track changeover mechanism, a righting rubbing mechanism and an anchoring seat sealing mechanism which are arranged on the upper center pipe, and also comprises a safety disanchoring device which is arranged on the anchoring seat sealing mechanism and the lower center pipe, wherein the safety disanchoring device comprises a safety short joint which is connected between the upper center pipe and the lower center pipe, a shearing nail fixed by the safety short joint and a cone body, a lower baffle ring which is connected with the cone body and is outside the safety short joint and a sealing member. The utility model is provided with the safety disanchoring device for causing the utility model to not only have a normal disanchoring function, but also start the safety disanchoring device under deadly conditions for carrying out a safe disanchoring function for ensuring pipe columns to be safely disanchored under stretching conditions, and the utility model can be widely used for various pipe columns with oil pumps which are provided with rods.
Description
One, technical field
The utility model relates to the oil exploitation downhole tool, relates in particular to a kind of oil pipe stretcher.
Two, background technology
Existing oil pipe stretcher is mainly by central tube and track switching mechanism, anchor block sealing mechanism that go up to install and set upright friction mechanism and form, can carry out oil pipe stretching operation, but the problem that exists is the comparison difficulty of disanchoring, and even can not disanchor sometimes, causes contingency.
Three, summary of the invention
In order to solve above-mentioned problems of the prior art, the utility model provides a kind of improved oil pipe stretcher, and shortcoming or deficiency that it can overcome effectively or avoid existing in the above-mentioned prior art reach the purpose of disanchoring safely.
The technical scheme that the utility model is dealt with problems is a kind of oil pipe stretcher, and it comprises top connection, lower contact, upper center tube, lower center tube and installs track switching mechanism on upper center tube, sets upright friction mechanism, anchor block sealing mechanism.Described track switching mechanism is made up of protective sleeve, change, track pin, change pressure cap and interstage sleeve; The described friction mechanism of setting upright is made of brake pad, spring, centralizer body; Described anchor block sealing mechanism is made of the cover of blocking, steel ball, lock ball cover, slips, slips holder, cone.Comprise that also book states the safety of installing on anchor block sealing mechanism and the lower center tube and separate anchor device, this is separated anchor device safely and comprises the safe pipe nipple that is connected between upper center tube and the lower center tube, lower baffle ring and seal that the shear pin that this pipe nipple and described cone fix is outer with safe pipe nipple, be connected with cone.
Wherein, described safe pipe nipple is provided with the interior shoulder that matches with upper center tube and lower center tube end and is attached thereto the internal thread that connects.
Wherein, described safe pipe nipple and upper center tube junction are provided with a weak spot of easily breaking, and are deblocking after breaking.
Wherein, the screw thread that described safe pipe nipple external surface is connected with lower baffle ring is the left-hand thread screw thread, and positive tube post is the shackle deblocking.
Wherein, described lower baffle ring is the annular component with interior shoulder, and shoulder matches with safe pipe nipple lower end in it, and shoulder portion inner surface seals mutually with lower center tube.
The utility model has following advantage compared with prior art:
1, adopt full bag slip design, the slips cornerite is big, and is many with the contact point of sleeve pipe, and the few damaged of protective casing prolongs the oil well life-span effectively.
2, carry mode seat anchor in the employing, make oil pipe be in extended state after the grappling, cause the oil pipe wriggling when reducing pump work effectively, improve pump efficiency.
3, be provided with safety and separate anchor device, when normally disanchoring inefficacy, can enable safety and separate anchor device, carry out safety and disanchor, safe and reliable.
4, adopt mechanical means seat anchor, disanchor, show obviously, easy to operate.
5, latus rectum is big, and wide adaptability can adapt to tubing string grappling needs on the pump of the following various sucker rod pumps of φ 56mm.
Four, description of drawings
Accompanying drawing is a structural representation of the present utility model.
Five, the specific embodiment
Referring to accompanying drawing; a kind of oil pipe stretcher; comprise top connection 1, lower contact 25, upper center tube 18, lower center tube 24 and install track switching mechanism on upper center tube 18, set upright friction mechanism, anchor block sealing mechanism; wherein; protective sleeve 4 is installed between top connection 1 and the change pressure cap 8; change 6 is installed on the track pin 7, and track pin 7 is installed in the track of upper center tube 18, and change pressure cap 8 is connected with interstage sleeve 9.Brake pad 10 upper ends connect interstage sleeve 9, the lower end connects the cover 13 of blocking, spring 11 is placed in the brake pad 10, the lock ball that centralizer body 12 is installed on anchor block envelope machine overlaps on 15, cover 13 inner chambers of blocking, steel ball 14 is installed in the lock ball cover 15, slips 17 is installed in the slips holder 16 and with lock ball cover 15 and is connected, and cone 19 matches with slips 17.Described safety is disanchored device installation on anchor block sealing mechanism and lower center tube 24, comprise safe pipe nipple 23, be connected between upper center tube 18 and the lower center tube 24, safe pipe nipple 23 upper ends are fixed on the cone 19 by shear pin 20, cone 19 is connected on the lower baffle ring 22, lower baffle ring 22 is installed outside safety pipe nipple 23, and the lower end seals mutually with lower center tube 24.Upper center tube 18 upper ends connect top connection 1, and seal 2 is installed in its junction, and check pin 3 is installed in the top connection 1.Lower contact 25 is connected on the lower center tube 24.Safe pipe nipple 23 is provided with a weak spot of easily breaking 26 with upper center tube 18 junctions, and the screw thread 27 that is connected with lower baffle ring 22 is the left-hand thread screw thread.
Claims (5)
1, a kind of oil pipe stretcher, comprise top connection, lower contact, upper center tube, lower center tube and install track switching mechanism on upper center tube, set upright friction mechanism, anchor block sealing mechanism, it is characterized in that also comprising that the safety of installing on described anchor block sealing mechanism and the lower center tube separates anchor device, described safety is separated anchor device and is comprised the safe pipe nipple that is connected between upper center tube and the lower center tube, outer lower baffle ring and the seal that is connected with cone of shear pin that this safe pipe nipple and cone fix and safe pipe nipple.
2, oil pipe stretcher according to claim 1 is characterized in that described safe pipe nipple is provided with the interior shoulder that matches with upper center tube and lower center tube end and is attached thereto the internal thread that connects.
3, oil pipe stretcher according to claim 1 and 2 is characterized in that described safe pipe nipple and upper center tube junction are provided with a weak spot of easily breaking.
4, oil pipe stretcher according to claim 1 and 2 is characterized in that the screw thread that described safe pipe nipple external surface is connected with lower baffle ring is the left-hand thread screw thread.
5, oil pipe stretcher according to claim 1 is characterized in that described lower baffle ring is the annular component with interior shoulder, and shoulder matches with safe pipe nipple lower end in it, and shoulder portion inner surface seals mutually with lower center tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420038110 CN2674076Y (en) | 2004-01-13 | 2004-01-13 | Tensile means for tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420038110 CN2674076Y (en) | 2004-01-13 | 2004-01-13 | Tensile means for tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674076Y true CN2674076Y (en) | 2005-01-26 |
Family
ID=34483957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420038110 Expired - Fee Related CN2674076Y (en) | 2004-01-13 | 2004-01-13 | Tensile means for tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2674076Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098704A (en) * | 2018-10-26 | 2018-12-28 | 中国石油化工股份有限公司 | The wriggling test method and its wriggling test device of down-hole string |
| CN113846989A (en) * | 2021-09-28 | 2021-12-28 | 刘东武 | Seat seal suspension pressure testing device |
-
2004
- 2004-01-13 CN CN 200420038110 patent/CN2674076Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098704A (en) * | 2018-10-26 | 2018-12-28 | 中国石油化工股份有限公司 | The wriggling test method and its wriggling test device of down-hole string |
| CN109098704B (en) * | 2018-10-26 | 2023-04-07 | 中国石油化工股份有限公司 | Creep test method and device for underground tubular column |
| CN113846989A (en) * | 2021-09-28 | 2021-12-28 | 刘东武 | Seat seal suspension pressure testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |