CN201915879U - Extension bar male cone - Google Patents
Extension bar male cone Download PDFInfo
- Publication number
- CN201915879U CN201915879U CN201020685661XU CN201020685661U CN201915879U CN 201915879 U CN201915879 U CN 201915879U CN 201020685661X U CN201020685661X U CN 201020685661XU CN 201020685661 U CN201020685661 U CN 201020685661U CN 201915879 U CN201915879 U CN 201915879U
- Authority
- CN
- China
- Prior art keywords
- extension bar
- fishing
- fishing head
- screw thread
- conical
- 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 - Lifetime
Links
- 210000002445 nipple Anatomy 0.000 claims description 24
- 238000010276 construction Methods 0.000 abstract description 5
- 239000003208 petroleum Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000288049 Perdix perdix Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Images
Abstract
The extension bar male cone is applied to fishing lower annular parts in petroleum well workover operation. The fishing rod mainly comprises an upper connector, an extension bar and a conical fishing head, wherein the upper end of the upper connector is provided with an internal thread; the lower end of the upper joint is in threaded connection with an extension bar, the lower end of the extension bar is in threaded connection with a conical fishing head, and fishing external threads are arranged on the surface of the conical fishing head; the upper joint, the extension bar and the conical fishing head are provided with a central water hole. The effect is as follows: separating the connector from the fishing threads, prolonging the distance between the connector and the fishing threads by using the extension bar, realizing the replacement of different fishing threads according to the inner diameters of a plurality of parts, and selecting the extension bar male cone with the minimum thread fishing range; in addition, a plurality of annular parts can be fished out at one time, so that the fishing frequency is reduced, and the construction progress is accelerated.
Description
Technical field
The utility model relates to petroleum well workover operation fishing tool, and particularly a kind of fishing tap is a kind of extension bar die nipple of salvaging the down hole annular loose mail.
Background technology
In petroleum well workover operation fishing tool, die nipple is a kind ofly specially to have the centre bore junk to carry out the instrument that thread making is salvaged to oil pipe, drilling rod, casing section mill, packer etc.Die nipple is long taper overall structure, is divided into joint and fishing head two parts.The internal thread that is connected with drilling rod is arranged at joint top, and fine thread is arranged at the joint bottom, is used to connect guide shoe, and foot is for salvaging screw thread.Die nipple has hydrophthalmia from top to bottom.Rely on and salvage screw thread under the pressure of the drill and torsional interaction, wedging junk inwall thread making is pulled junk out.
At present, this class die nipple joint and the distance of salvaging between the screw thread are shorter, and salvage screw thread and be cone and distribute, and when salvaging ring-type ring-type loose mail, once can only pull one out, and a packer needs 5～6 ability to salvage, and construction speed is slower.In addition, die nipple is when salvaging packer ring-type loose mail, owing to contact with point type on the axis, with the wire contact, after thread making was salvaged once, the die nipple thread making was salvaged part ridge later and damaged substantially, can't salvage the ring-type loose mail of identical salvaging scope once more on the circumference.
The utility model content
The purpose of this utility model is: a kind of extension bar die nipple is provided, with joint and salvaging thread separation, utilize extension bar to prolong joint and salvage distance between the screw thread, realize changing the different screw threads of salvaging, select minimum screw thread to salvage the extension bar die nipple of scope according to a plurality of loose mail internal diameters; Once can pull a plurality of ring-type loose mails in addition out, reduce and salvage number of times, accelerating construction progress.
The technical solution adopted in the utility model is: the extension bar die nipple, mainly to form by top connection 1, extension bar 2 and taper fishing head 3, and there is internal thread the upper end of top connection 1, can be connected the lower end of drill string; It is characterized in that: screw thread is connected with extension bar 2 in the lower end of top connection 1, and the lower end screw thread of extension bar 2 is connected with taper fishing head 3, and there is the external screw thread 4 of salvaging on taper fishing head 3 surfaces; Top connection 1, extension bar 2 and taper fishing head 3 have center hydrophthalmia (centre bore).
Described extension bar external diameter is between 50～55mm; The length of extension bar 2 is between 1.5～6.5m.
The gradient of described salvaging external screw thread 4 is 1: 16.
The beneficial effects of the utility model: the utility model extension bar die nipple, with joint and salvaging thread separation, utilize extension bar to prolong joint and salvage distance between the screw thread, realize changing the different screw threads of salvaging, select minimum screw thread to salvage the extension bar die nipple of scope according to a plurality of loose mail internal diameters; Once can pull a plurality of ring-type loose mails in addition out, reduce and salvage number of times, salvage time number and reduce brill, accelerating construction progress 3～5 times than common die nipple.Top connection and extension bar are threaded, and can change the taper fishing head, and this extension bar die nipple just can not scrapped, and expenditure reduces cost.Adopt between extension bar and the taper fishing head to be threaded, the corresponding reduction of intensity, the ring-type loose mail can't can twist off this place during unfreezing by force in well, can't discharge the generation that causes second accident after having avoided the Yin Putong die nipple to drag for obtaining the ring-type loose mail.
Description of drawings
Fig. 1 is the utility model extension bar die nipple structural profile schematic diagram.
Among the figure, the 1-top connection, the 2-extension bar, 3-taper fishing head, 4-salvages external screw thread, 5-hydrophthalmia.
The specific embodiment
Embodiment 1: with an extension bar die nipple is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model extension bar die nipple mainly is made up of top connection 1, extension bar 2 and taper fishing head 3, and there is internal thread the upper end of top connection 1.
Screw thread is connected with extension bar 2 in the lower end of top connection 1, and the external diameter of extension bar 2 is 55mm; The length of extension bar 2 is 3.5m.The lower end screw thread of extension bar 2 is connected with taper fishing head 3, and there is the external screw thread 4 of salvaging on taper fishing head 3 surfaces; The gradient of salvaging external screw thread 4 is 1: 16.Top connection 1, extension bar 2 and taper fishing head 3 have the center hydrophthalmia.
The extension bar die nipple is gone into the well, and to salvage junk with holes identical with method of operating with conventional die nipple Refloatation method.When salvaging the ring-type loose mail, can reduce and salvage number of times, accelerating construction progress.
Claims (3)
1. an extension bar die nipple mainly is made up of top connection (1), extension bar (2) and taper fishing head (3), and there is internal thread the upper end of top connection (1); It is characterized in that: the lower end screw thread in top connection (1) is connected with extension bar (2), and the lower end screw thread of extension bar (2) is connected with taper fishing head (3), and there is salvaging external screw thread (4) on taper fishing head (3) surface; Top connection (1), extension bar (2) and taper fishing head (3) have the center hydrophthalmia.
2. extension bar die nipple according to claim 1 is characterized in that: described extension bar external diameter is between 50～55mm; The length of extension bar (2) is between 1.5～6.5m.
3. extension bar die nipple according to claim 1 is characterized in that: the gradient of described salvaging external screw thread (4) is 1: 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020685661XU CN201915879U (en) | 2010-12-17 | 2010-12-17 | Extension bar male cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020685661XU CN201915879U (en) | 2010-12-17 | 2010-12-17 | Extension bar male cone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201915879U true CN201915879U (en) | 2011-08-03 |
Family
ID=44415681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020685661XU Expired - Lifetime CN201915879U (en) | 2010-12-17 | 2010-12-17 | Extension bar male cone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201915879U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953701A (en) * | 2012-11-15 | 2013-03-06 | 中国石油集团西部钻探工程有限公司 | Fishing head of conically spherical pilot bit type drilling tool |
| CN111411913A (en) * | 2020-05-15 | 2020-07-14 | 中国石油天然气集团有限公司 | Detachable fishing male tap and using method |
-
2010
- 2010-12-17 CN CN201020685661XU patent/CN201915879U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953701A (en) * | 2012-11-15 | 2013-03-06 | 中国石油集团西部钻探工程有限公司 | Fishing head of conically spherical pilot bit type drilling tool |
| CN111411913A (en) * | 2020-05-15 | 2020-07-14 | 中国石油天然气集团有限公司 | Detachable fishing male tap and using method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |
|
| CX01 | Expiry of patent term |