CN202215163U - Durable drill rod connector with ultra high torsional strength - Google Patents
Durable drill rod connector with ultra high torsional strength Download PDFInfo
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- CN202215163U CN202215163U CN2011202851768U CN201120285176U CN202215163U CN 202215163 U CN202215163 U CN 202215163U CN 2011202851768 U CN2011202851768 U CN 2011202851768U CN 201120285176 U CN201120285176 U CN 201120285176U CN 202215163 U CN202215163 U CN 202215163U
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Abstract
The utility model relates to a drill rod connector used during the drilling process of an oil well or a gas well, in particular to a durable drill rod connector with ultra high torsional strength, which comprises an external thread connector and an internal thread connector, wherein the external-thread connector is provided with an external thread external shoulder, an external thread section and an external thread external end face, and the internal thread connector is provided with an internal thread internal end face, an internal thread small-end knife withdrawal groove, an internal thread section and an internal thread external shoulder. The durable drill rod connector with the ultra high torsional strength is characterized in that the internal thread internal end face is additionally arranged at an small end of the internal thread connector, the distance between an internal thread external end face and the internal thread internal end face is larger than or equal to that between the external thread external shoulder and the external thread external end face, and the deviation value is 0-0.3mm. The durable drill rod connector with the ultra high torsional strength substantially solves the technical problem that an existing API drill rod connector is low in torsional strength, and simultaneously needs to further solve the problem that the torsional strength is reduced when drill rod connectors exchange with each other.
Description
Technical field
The utility model relates to the tool joint of in the drilling process of oil well or gas well, using, the tool joint of particularly a kind of durable type superelevation torsional strength.
Background technology
The tool joint of in the drilling process of oil well or gas well, using, the general API standard production that adopt American Petroleum Institute (API) (API) to formulate are made more, and its structure is as shown in Figure 1.When API tool joint and drill pipe body match, the index of a torsional strength ratio is arranged, the torsional strength of joining tool joint exactly accounts for the ratio of drill pipe body torsional strength, is antitorque ratio, and the antitorque ratio of general drilling rod is greater than 0.8.But along with drilling condition is more and more harsher, the continuous increase of drilling depth requires the grade of steel of drilling rod also improving constantly.And when on these tool joints of API fit over the drilling rod of high grade of steel, using, usually can be little because of the torsional strength of tool joint, and take place that the tool joint internal thread swells or and the failure accidents of male connection screw thread fracture.And the rear end of the female adapter of API tool joint is inclined-plane in, and the front end of corresponding male connection is an outer inclined-plane, has only a torque resistant shoulder at the front end face of female adapter and the rear end face of the male connection of correspondence, and the joint torsion strength is low.
In addition, remove the torsional strength that needs to improve existing API tool joint, also need consider to make things convenient for the requirement of each user's tool joint interchangeability.
The utility model content
The purpose of the utility model provides the tool joint of a kind of durable type superelevation torsional strength, mainly solves the existing low technical problem of API tool joint torsional strength, also needs further to solve tool joint simultaneously when exchanging, the problem of loss torsional strength.
The utility model solves the problems of the technologies described above the technical scheme that is adopted.
The tool joint of a kind of durable type superelevation torsional strength; It comprises the male connection with the outer shoulder of external screw thread, external thread section and external screw thread outer face, and the female adapter with the outer shoulder of internal thread inner face, internal thread small end escape, internal thread segment and internal thread; It is characterized in that: the small end of described female adapter increases an internal thread inner face; Shoulder is to the distance between the external screw thread outer face outward more than or equal to external screw thread to the distance between the internal thread inner face in described internal thread outer face, and deviate is 0 ~ 0.3mm.
The tool joint of described durable type superelevation torsional strength; It is characterized in that: described internal thread inner face is to an internal thread small end escape is arranged between the internal thread inner segment; The length of this internal thread small end escape is between the 6.35-12.7mm, the tall and big 0.3mm of depth ratio respective threads thread form chi or more than the 0.3mm.
The tool joint of described durable type superelevation torsional strength is characterized in that: the form of thread of described external thread section and internal thread segment is consistent with corresponding API or ISO joint.
The tool joint of described durable type superelevation torsional strength is characterized in that: the reach of described external thread section equals corresponding API external screw thread design length, and the tolerance of external thread length is ± 0.08mm.
The beneficial effect of the utility model is: the utility model tool joint has high torsional strength, compares with unidimensional API tool joint, and torsional strength improves about 40%.Can under the prerequisite that guarantees instructions for use, optimize joint dimension, make tool joint have big hydrophthalmia, hang down annular pressure lost, more help the advantage of drilling well.The structure design of this kind Drill Stem Double Shoulder Connector; Make the API joint of standard can any repairing just can reach the effect of exchange; And the external screw thread of standard and the internal thread of this utility model match, and high torsional strength does not lose at all, can reach the high torsional property of two shoulders fully.In the drilling process of oil well or gas well; The harshness day by day of drilling condition, also increasingly high to the drilling-production equipment requirement, the above-mentioned advantage of the utility model tool joint; It is low well to have solved existing API tool joint torsional strength; And when exchanging, the problem of loss torsional strength has good application space.
Description of drawings
Fig. 1 is an API tool joint structure chart; Among the figure: A-male connection, B-female adapter, the outer shoulder of C-external screw thread, D-external screw thread outer face, the outer shoulder of E-internal thread, F-external thread section, G-internal thread segment, H-external screw thread tooth form, I-internal thread tooth form.
Fig. 2 is the structure chart of the utility model; Among the figure: 1-male connection, 2-female adapter, the outer shoulder of 3-external screw thread, 4-external screw thread outer face, 5-internal thread inner face, the outer shoulder of 6-internal thread, 7-external thread section, 8-internal thread segment, 9-internal thread small end escape.
The specific embodiment
See also Fig. 2, it is the structure chart of a kind of durable type superelevation of the utility model torsional strength tool joint.As shown in the figure: it comprises the male connection 1 with the outer shoulder 3 of external screw thread, external thread section 7 and external screw thread outer face 4, and the female adapter 2 with the outer shoulder 6 of internal thread inner face 5, internal thread small end escape 9, internal thread segment 8 and internal thread.The form of thread of described external thread section 7 and internal thread segment 8 is consistent with corresponding API joint.Be consistent with the thread form of API tool joint, convenient on-the-spot coupling is used, and convenient for maintaining.
The reach of the external thread section 7 of the two shoulder drilling rod of the antitorque exchange type of described height equals corresponding API external screw thread design length, and the reach tolerance is ± 0.08mm.Keep the male thread Design of length identical, can reach the requirement of tool joint interchangeability easily, and can not reduce the high torsional resistance performance of the joint that matches with the API standard.
As shown in Figure 2, the small end of the female adapter 2 of the utility model has increased an internal thread inner face 5.The distance that the outer shoulder 6 of internal thread arrives between the external screw thread outer face 4 more than or equal to the outer shoulder 3 of external screw thread to the distance between the internal thread inner face 5, deviate is 0 ~ 0.3mm.The suitable magnitude of interference can guarantee that joint reaches a perfect engagement after the shackle on normally, connects with sealing performance just to reach best.
In addition, the internal thread inner face 5 of the utility model is to an internal thread small end escape 9 is arranged between the internal thread inner segment (8).The length of this internal thread small end escape 9 is between the 6.35-12.7mm, the tall and big 0.3mm at least of depth ratio respective threads thread form chi.The purpose that designs this escape is that when pin and box sub cooperated, the small end engagement place can not interfere.And this design has reduced the length of pin and box sub circular bead surface to circular bead surface, has increased the area of slave station shoulder, thereby has improved the torsional strength of tool joint.
In sum, being merely the preferred embodiment of the utility model, is not the practical range that is used for limiting the utility model, and promptly all equivalences of doing according to the content of the utility model claim change and modify, and all should be the technological category of the utility model.
Claims (4)
1. durable type superelevation torsional strength tool joint; It comprises the male connection (1) with the outer shoulder (3) of external screw thread, external thread section (7) and external screw thread outer face (4), and the female adapter (2) with the outer shoulder (6) of internal thread inner face (5), internal thread small end escape (9), internal thread segment (8) and internal thread; It is characterized in that: the small end of described female adapter (2) increases an internal thread inner face (5); Described internal thread outer face (6) is arrived the distance between the external screw thread outer face (4) to the distance between the internal thread inner face (5) more than or equal to the outer shoulder (3) of external screw thread, and deviate is 0 ~ 0.3mm.
2. durable type superelevation torsional strength according to claim 1 tool joint; It is characterized in that: described internal thread inner face (5) is to an internal thread small end escape (9) is arranged between the internal thread inner segment (8); The length of this internal thread small end escape (9) is between the 6.35-12.7mm, the tall and big 0.3mm of depth ratio respective threads thread form chi or more than the 0.3mm.
3. durable type superelevation torsional strength according to claim 1 and 2 tool joint is characterized in that: the form of thread of described external thread section (7) and internal thread segment (8) is consistent with corresponding API or ISO joint.
4. durable type superelevation torsional strength according to claim 3 tool joint is characterized in that: the reach of described external thread section (7) equals corresponding API external screw thread design length, and the tolerance of external thread length is ± 0.08mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202851768U CN202215163U (en) | 2011-08-08 | 2011-08-08 | Durable drill rod connector with ultra high torsional strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202851768U CN202215163U (en) | 2011-08-08 | 2011-08-08 | Durable drill rod connector with ultra high torsional strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202215163U true CN202215163U (en) | 2012-05-09 |
Family
ID=46014423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202851768U Expired - Lifetime CN202215163U (en) | 2011-08-08 | 2011-08-08 | Durable drill rod connector with ultra high torsional strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202215163U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952391A (en) * | 2016-06-24 | 2016-09-21 | 江阴德玛斯特钻具有限公司 | Improved double-shouldered drill pipe joint |
| CN112943120A (en) * | 2021-04-22 | 2021-06-11 | 中国铁建重工集团股份有限公司 | Rock drilling device |
-
2011
- 2011-08-08 CN CN2011202851768U patent/CN202215163U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952391A (en) * | 2016-06-24 | 2016-09-21 | 江阴德玛斯特钻具有限公司 | Improved double-shouldered drill pipe joint |
| CN112943120A (en) * | 2021-04-22 | 2021-06-11 | 中国铁建重工集团股份有限公司 | Rock drilling device |
| CN112943120B (en) * | 2021-04-22 | 2022-11-15 | 中国铁建重工集团股份有限公司 | Rock drilling device |
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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: 20120509 |
|
| CX01 | Expiry of patent term |