CN204782834U - Novel continuous outside of tubes slips connector - Google Patents
Novel continuous outside of tubes slips connector Download PDFInfo
- Publication number
- CN204782834U CN204782834U CN201520380284.1U CN201520380284U CN204782834U CN 204782834 U CN204782834 U CN 204782834U CN 201520380284 U CN201520380284 U CN 201520380284U CN 204782834 U CN204782834 U CN 204782834U
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- China
- Prior art keywords
- slips
- fishing neck
- seal nipple
- new type
- section
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Abstract
The utility model provides a novel continuous outside of tubes slips connector mainly comprises fishing neck, slips, sealing joint, the fishing neck includes the hole enlargement section of undergauge section, the lower part on upper portion and is located the conical transition between the two, install in the hole enlargement section lower part of slips, the upper portion of the slips outside be equipped with the conical surface and with cone combined with is realized to conical transition's the inboard conical surface, sealing joint's upper end swing joint is in in the hole enlargement section of fishing neck lower extreme, just sealing joint's upper end pass through the packing ring with the slips lower extreme supports and leans on, the undergauge sector hole footpath of fishing neck is the same with sealing joint's upper end aperture. Compared with the prior art, the utility model discloses the structure of outer slips connector through changing parts such as slips, lower clutch makes the connector structure simpler, and joint strength is bigger, and life is longer, especially adaptedly uses widely in coiled tubing borehole operation.
Description
Technical field
The utility model relates to oil exploitation downhole tool field, particularly relates to a kind of new type of continuous pipe external slips connector.
Background technology
Although China is energy big country, petroleum reserves is fewer; In recent years, along with the passing of oil exploitation time, oil well is aging, and output day by day reduces, and oil production technology in the past can not meet actual duty requirements.In order to improve oil recovery factor, usually needing to use continuous oil pipe device to carry out underground work, improving oil reservoir permeability, improve oil recovery factor.Wherein external slips connector is one of basic downhole tool, connects continuous-tube and other underground operation tool by connector; Existing external slips connector construction is complicated and bonding strength is low.
Utility model content
In order to solve the above-mentioned defect of prior art, the utility model provides the new type of continuous pipe external slips connector that a kind of structure is simple, reasonable in design, bonding strength is large.
The concrete technical scheme of the utility model is: primarily of fishing neck, slips, seal nipple composition, the tapering transition section that described fishing neck comprises the undergauge section on top, the extension diameter section of bottom and is positioned at therebetween; The bottom of described slips is arranged in extension diameter section, and the upper outside of described slips is provided with the conical surface and realizes cone match with the inner side conical surface of described tapering transition section; The movable upper end of described seal nipple is connected in the extension diameter section of described fishing neck lower end, and the upper end of described seal nipple is by packing ring and described slips lower end abutment; The undergauge sector hole footpath of described fishing neck is identical with the aperture, upper end of seal nipple.
Such scheme can be improved to further:
For being threaded between the upper end of described seal nipple and the extension diameter section of described fishing neck lower end.
The described inner surface of seal nipple upper end and the external surface of lower end are respectively equipped with the O type seal groove taking up sealing ring.
Sawtooth button is adopted inside described slips.
The wall of described fishing neck is provided with the dog screw for fastening continuous-tube.
The wall of described seal nipple is provided with for the dog screw fastening with fishing neck.
Compared with prior art, the utility model external slips connector is by changing the structure of the parts such as slips, lower contact, and make connector construction simpler, bonding strength is larger, and longer service life, is highly suitable in coiled tubing underground work and promotes the use of.
Accompanying drawing explanation
Fig. 1 be the utility model a kind of be the structural representation of embodiment;
In figure: in figure: 1, long spiro nail; 2, fishing neck; 2.1, undergauge section; 2.2, tapering transition section; 2.3, extension diameter section; 3, slips; 4, packing ring; 5, short screw; 6, seal nipple 7, "O"-ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
See Fig. 1, a kind of new type of continuous pipe external slips connector, forms primarily of fishing neck 2, slips 3, seal nipple 6, the tapering transition section 2.2 that fishing neck 2 comprises the undergauge section 2.1 on top, the extension diameter section 2.3 of bottom and is positioned at therebetween; The bottom of slips 3 is arranged in extension diameter section 2.3, and the upper outside of slips 3 is provided with the conical surface and realizes cone match with the inner side conical surface of tapering transition section 2.2, adopts sawtooth button inside slips 3.The upper end of seal nipple 6 is threaded connection in the extension diameter section 2.3 of fishing neck 2 lower end, and the upper end of seal nipple 6 is by packing ring 4 and slips 3 lower end abutment; Undergauge section 2.1 aperture of fishing neck 2 is identical with the aperture, upper end of seal nipple 6.The inner surface of seal nipple 6 upper end and the external surface of lower end are respectively equipped with the O type seal groove taking up sealing ring.The wall of fishing neck 2 is provided with the dog screw (i.e. long spiro nail 1) for fastening continuous-tube, and the wall of seal nipple 6 is provided with for the dog screw (i.e. short screw 5) fastening with fishing neck 2.
The utility model is applicable in the various operations of continuous-tube, as with pressure in sand washing, well-flushing, salvaging, brill milling etc. and not Operating Pressure.During use, first continuous-tube is inserted in fishing neck 2, slips 3 and packing ring 4, and then insert the seal nipple 6 having installed "O"-ring 7, until continuous-tube bottom is by twice "O"-ring 7.Move down packing ring 4, slips 3 and fishing neck 2, fishing neck 2 and seal nipple 6 are threaded each other, and fishing neck bellmouth can make slips 3 shrink and sting tight continuous-tube.After slips 3 pretension, long spiro nail 1 is installed.Time stressed between continuous-tube and instrument, the clamping force between slips 3 and continuous-tube can impel slips 3 to move along on the bellmouth inwall of fishing neck 2, slips tooth is engaged tighter.When external force exceeds the snap-in force of slips 3, the friction produced by long spiro nail 1 pretightning force can promote the bonding strength of connector again, thus reaches the stable object connected.
The above is preferred embodiment of the present utility model; it should be noted that; for those skilled in the art; under the prerequisite not departing from the utility model principle; likely to concrete size; or partial structurtes go out some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a new type of continuous pipe external slips connector, is characterized in that: primarily of fishing neck, slips, seal nipple composition, the tapering transition section that described fishing neck comprises the undergauge section on top, the extension diameter section of bottom and is positioned at therebetween; The bottom of described slips is arranged in extension diameter section, and the upper outside of described slips is provided with the conical surface and realizes cone match with the inner side conical surface of described tapering transition section; The movable upper end of described seal nipple is connected in the extension diameter section of described fishing neck lower end, and the upper end of described seal nipple is by packing ring and described slips lower end abutment; The undergauge sector hole footpath of described fishing neck is identical with the aperture, upper end of seal nipple.
2. new type of continuous pipe external slips connector according to claim 1, is characterized in that: for being threaded between the upper end of described seal nipple and the extension diameter section of described fishing neck lower end.
3. new type of continuous pipe external slips connector according to claim 1, is characterized in that: the described inner surface of seal nipple upper end and the external surface of lower end are respectively equipped with the O type seal groove taking up sealing ring.
4. new type of continuous pipe external slips connector according to claim 1, is characterized in that: adopt sawtooth button inside described slips.
5. new type of continuous pipe external slips connector according to claim 1, is characterized in that: the wall of described fishing neck is provided with the dog screw for fastening continuous-tube.
6. new type of continuous pipe external slips connector according to claim 1, is characterized in that: the wall of described seal nipple is provided with for the dog screw fastening with fishing neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520380284.1U CN204782834U (en) | 2015-06-05 | 2015-06-05 | Novel continuous outside of tubes slips connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520380284.1U CN204782834U (en) | 2015-06-05 | 2015-06-05 | Novel continuous outside of tubes slips connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204782834U true CN204782834U (en) | 2015-11-18 |
Family
ID=54522902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520380284.1U Active CN204782834U (en) | 2015-06-05 | 2015-06-05 | Novel continuous outside of tubes slips connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204782834U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456645A (en) * | 2019-01-22 | 2020-07-28 | 中国石油天然气股份有限公司 | Continuous oil pipe connector |
| CN113090207A (en) * | 2021-04-20 | 2021-07-09 | 西南石油大学 | Coiled tubing speed limit well-flushing tool |
-
2015
- 2015-06-05 CN CN201520380284.1U patent/CN204782834U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456645A (en) * | 2019-01-22 | 2020-07-28 | 中国石油天然气股份有限公司 | Continuous oil pipe connector |
| CN111456645B (en) * | 2019-01-22 | 2022-05-10 | 中国石油天然气股份有限公司 | Continuous oil pipe connector |
| CN113090207A (en) * | 2021-04-20 | 2021-07-09 | 西南石油大学 | Coiled tubing speed limit well-flushing tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |