CN202338226U - Non-magnetic spiral drill collar - Google Patents
Non-magnetic spiral drill collar Download PDFInfo
- Publication number
- CN202338226U CN202338226U CN 201120426589 CN201120426589U CN202338226U CN 202338226 U CN202338226 U CN 202338226U CN 201120426589 CN201120426589 CN 201120426589 CN 201120426589 U CN201120426589 U CN 201120426589U CN 202338226 U CN202338226 U CN 202338226U
- Authority
- CN
- China
- Prior art keywords
- drill collar
- magnetic
- rod
- grooved drill
- drilling
- 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 relates to a non-magnetic spiral drill collar which is mainly used for adding weight and performing stabilization in the drilling process of a directional well. The non-magnetic spiral drill collar is formed by rod heads and a rod body. The upper rod head is an internal screw thread joint. The lower rod head is an external screw thread joint. The non-magnetic spiral drill collar is characterized in that the outer surface of the rod body is provided with three right spiral grooves from the root of the upper rod head to the root of the lower rod head; and the three right spiral grooves are uniformly distributed on the outer surface of the rod body. Accoridng to the utility model, the problems of sticking of a drilling tool and backing pressure in the drilling process in the drilling production of the directional well are solved effectively; the contact area between the drilling tool and the well wall is reduced, the fluid flow between the drilling tool and the lower well wall is also increased, and the sand-carrying capacity of drilling fluid at the drill collar is improved. The non-magnetic spiral drill collar is of an integrated structure and is not provided with a connecting piece. The service life of the non-magnetic spiral drill collar is not shorter than that of a common screw-free non-magnetic drill collar.
Description
Technical field
The utility model relates to a kind of no magnetic grooved drill collar, is mainly used in to increase the weight of in the directional well drilling process to belong to the construction operation pipe in the petroleum industry drilling process with stable.
Background technology
At present; In oil directional well drilling process, use always and stablize and the drill string that pressurizes to non magnetic drill collar; But because hole deviation, the sticking card of drilling tool can appear in conventional non magnetic drill collar in the directional well drilling process, the problem of backing pressure when creeping into, and causes that frictional resistance increases between the bit freezing or the borehole wall and drill collar.
The utility model content
The purpose of the utility model is to provide a kind of no magnetic grooved drill collar; To reduce the possibility of the sticking card of drilling tool, the frictional resistance when reducing drilling tool and on the borehole wall down, sliding reaches when creeping into and alleviates backing pressure; Strengthen the prop-carrying capacity of drill collar place drilling fluid, reduce landwaste and ground probability at following borehole wall place.
The utility model adopts following technical scheme; It is a kind of no magnetic grooved drill collar; Be made up of the bar head and the body of rod, the upper bar head is female adapter, and the lower pole head is male connection; It is characterized in that having three right-hand screw grooves at the root of outer surface from a upper bar root to the lower pole head of the body of rod, three right-hand screw grooves are uniformly distributed with on the outer surface of the body of rod.
The arc length sum of three above-mentioned right-hand screw grooves on the same shaft section on the no magnetic grooved drill collar body of rod outer surface is not more than the girth of no magnetic grooved drill collar body of rod appearance shaft section.
Be above-mentioned no magnetic grooved drill collar, when the arc length sum on the same shaft section of three right-hand screw grooves on no magnetic grooved drill collar body of rod outer surface during less than the girth of no magnetic grooved drill collar body of rod appearance shaft section, for the B1 type does not have the magnetic grooved drill collar; When the arc length sum on the same shaft section of three right-hand screw grooves on no magnetic grooved drill collar body of rod outer surface equals not have the girth of magnetic grooved drill collar body of rod appearance shaft section, for the B2 type does not have the magnetic grooved drill collar.
Above-mentioned B1 type does not have the magnetic grooved drill collar, and its right-hand screw groove is symmetrical arc on the same shaft section on the no magnetic grooved drill collar body of rod outer surface, as shown in Figure 2, is the B1a type; The B1 type does not have the magnetic grooved drill collar, and its right-hand screw groove is asymmetric arc on the same shaft section on the no magnetic grooved drill collar body of rod outer surface, as shown in Figure 4, is the B1b type.
Cutting depth, helical pitch, the polar angle of three above-mentioned right-hand screw grooves are identical, and cutting depth is all less than the bar wall thickness of the no magnetic grooved drill collar body of rod.
The specification of no magnetic grooved drill collar just processes three right hand helix grooves that are uniformly distributed with according to SY/T5144-1997 " drill collar " standard on the drill collar external cylindrical surface.
The utility model effectively overcome the sticking card of drilling tool in directional well drilling production, the problem of backing pressure when creeping into, and reduced the contact area between the drilling tool and the borehole wall, increased the fluid flow between the drilling tool and the following borehole wall simultaneously; Increase the prop-carrying capacity of drill collar place drilling fluid; Reduce landwaste and ground probability at borehole wall place down, physical property is identical with common non magnetic drill collar, and not have the magnetic grooved drill collar be overall structure; No connector is not less than the non magnetic drill collar of common no spiral application life.
Description of drawings
Fig. 1 is that the B1a type does not have magnetic grooved drill collar structural representation;
Fig. 2 is that the B1a type does not have magnetic grooved drill collar shaft section sketch map;
Fig. 3 is that the B1b type does not have magnetic grooved drill collar structural representation;
Fig. 4 is that the B1b type does not have magnetic grooved drill collar shaft section sketch map;
Fig. 5 is that the B2 type does not have magnetic grooved drill collar structural representation;
Fig. 6 is that the B2 type does not have magnetic grooved drill collar shaft section sketch map;
Among the figure, female adapter 1, male connection 2, the body of rod 3, polar angle are θ.
The specific embodiment
Below in conjunction with accompanying drawing, the structure of the utility model is further specified.
Embodiment one, and is as shown in Figure 1, the no magnetic grooved drill collar of the utility model; The integral body that constitutes by the bar head and the body of rod; The upper bar head is female adapter 1, and the lower pole head is male connection 2, it is characterized in that having three right-hand screw grooves at the root of outer surface from a upper bar root to the lower pole head of the body of rod 3; Three right-hand screw grooves are uniformly distributed with on the outer surface of the body of rod; Above-mentioned no magnetic grooved drill collar is when the arc length sum on the same shaft section of three right-hand screw grooves on no magnetic grooved drill collar body of rod outer surface during less than the girth of no magnetic grooved drill collar body of rod appearance shaft section, for B 1 type does not have the magnetic grooved drill collar.When on the same shaft section of right-hand screw groove on no magnetic grooved drill collar body of rod outer surface be symmetrical arc the time, as depicted in figs. 1 and 2, for the B1a type does not have the magnetic grooved drill collar.
Embodiment two, and is as shown in Figure 3, and the B1 type does not have the magnetic grooved drill collar, when on the same shaft section of right-hand screw groove on no magnetic grooved drill collar body of rod outer surface be asymmetric arc the time, like Fig. 3 and shown in Figure 4, for the B1b type does not have the magnetic grooved drill collar.
Embodiment three, when the arc length sum on the same shaft section of three right-hand screw grooves on no magnetic grooved drill collar body of rod outer surface equals not have the girth of magnetic grooved drill collar body of rod appearance shaft section, and for the B2 type does not have the magnetic grooved drill collar, structure such as Fig. 5 and shown in Figure 6.
Cutting depth, helical pitch, polar angle during three right-hand screw groove processing among above-mentioned each embodiment are identical, and cutting depth is all less than the bar wall thickness of the no magnetic grooved drill collar body of rod.Concrete specification needs according to SY/T5144-1997 " drill collar " standard, and processing gets final product.
Claims (3)
1. no magnetic grooved drill collar; Constitute by the bar head and the body of rod; The upper bar head is female adapter (1); The lower pole head is male connection (2), it is characterized in that having three right-hand screw grooves at the root of outer surface from a upper bar root to the lower pole head of the body of rod (3), and three right-hand screw grooves are uniformly distributed with on the outer surface of the body of rod.
2. no magnetic grooved drill collar as claimed in claim 1 is characterized in that the arc length sum of three right-hand screw grooves on the same shaft section on the no magnetic grooved drill collar body of rod outer surface is not more than the girth of no magnetic grooved drill collar body of rod appearance shaft section.
3. no magnetic grooved drill collar as claimed in claim 1 is characterized in that cutting depth, helical pitch, the polar angle of three right-hand screw grooves is identical, and cutting depth is all less than the bar wall thickness of the no magnetic grooved drill collar body of rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120426589 CN202338226U (en) | 2011-11-02 | 2011-11-02 | Non-magnetic spiral drill collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120426589 CN202338226U (en) | 2011-11-02 | 2011-11-02 | Non-magnetic spiral drill collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202338226U true CN202338226U (en) | 2012-07-18 |
Family
ID=46486919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120426589 Expired - Fee Related CN202338226U (en) | 2011-11-02 | 2011-11-02 | Non-magnetic spiral drill collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202338226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278234A (en) * | 2021-12-16 | 2022-04-05 | 中煤科工集团西安研究院有限公司 | Welding spiral non-magnetic drill rod for directional drilling of coal mine tunnel and preparation method |
-
2011
- 2011-11-02 CN CN 201120426589 patent/CN202338226U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278234A (en) * | 2021-12-16 | 2022-04-05 | 中煤科工集团西安研究院有限公司 | Welding spiral non-magnetic drill rod for directional drilling of coal mine tunnel and preparation method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20181102 |