CN201334879Y - Three-edged drill collar used in petroleum drilling - Google Patents
Three-edged drill collar used in petroleum drilling Download PDFInfo
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- CN201334879Y CN201334879Y CNU2009200788118U CN200920078811U CN201334879Y CN 201334879 Y CN201334879 Y CN 201334879Y CN U2009200788118 U CNU2009200788118 U CN U2009200788118U CN 200920078811 U CN200920078811 U CN 200920078811U CN 201334879 Y CN201334879 Y CN 201334879Y
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Abstract
The utility model discloses a three-edged drill collar used in petroleum drilling, which comprises a drill collar body, three tangent planes are arranged on the drill collar body, and three edges are formed on the section of the three-edged drill collar. The utility model is not inferior to the prior art drill collar of same dimensions in terms of rigidity and overflow area. Moreover, the utility model can increase the annular overflow area, reduce the contact area between the drill collar and mud-cakes on a borehole wall, and scrape the mud-cakes away, thereby effectively avoiding the occurrence of sticking-and-clamping phenomenon.
Description
Technical field
The utility model relates to the oil drilling machine technical field, relates in particular to the triangular drill collar that a kind of oil drilling is used.
Background technology
In the prior art, the drilling technology of domestic employing is to connect drill collar by drilling rod mostly, drives drill bit rotation fractured rock again.And the employed drill collar of this technology mostly is circular cross-section, and its structure has through hole, the threaded cylindrical structural in two ends in the middle of being.For example, China Patent No. " 200420042182.0 " discloses a kind of oil drilling drill collar, and drill collar one end is for being provided with female female joint, and the other end is for being provided with externally threaded male joint.Adopt the drill collar of said structure, simple in structure, easy to process, therefore used in a large number.
But the typical circular drill collar of in the well of circle, working, in order to make drilling fluid smoothly by the annular space between drill collar and the well, the external diameter of drill collar is a lot of less than borehole diameter, so its rigidity is restricted, because its rigidity is restricted, and causes its scope of application narrower.Because the effect of drilling fluid can form softer mud cake on the well inwall, when drill string generation flexing, circular drill collar leans against on the mud cake, sticks together with mud cake, causes bit freezing---sticking card accident.In addition, columniform common drill collar is installed inconvenience in drilling process, and labor strength is big, and drilling efficiency is low, easily causes the jig case accident.Influence production efficiency because of often changing drill collar, reduce output, and when having an accident, can cause bigger economic loss.
The utility model content
The purpose of this utility model is to overcome the above-mentioned technical problem that the drilling well of prior art PetroChina Company Limited. exists with drill collar, the triangular drill collar that provides a kind of oil drilling to use, the utility model rigidity and area of passage are not less than the level of existing unidimensional drill collar, and the utility model can increase the annular space area of passage, reduce the contact area of mud cake on the drill collar and the borehole wall, can also play the effect of scraping mud cake, prevent the generation of sticking card accident effectively.
For achieving the above object, the technical solution adopted in the utility model is as follows:
The triangular drill collar that a kind of oil drilling is used comprises the drill collar body, it is characterized in that: described drill collar body is provided with three tangent planes, forms the triangular drill collar that the cross section has three ribs.
Described tangent plane is symmetrical arranged with the center on the drill collar body.
Described tangent plane is plane or the curved surface shape.
Described drill collar body one or both ends are provided with the loading and unloading section of being convenient to load and unload, and the cross section of described loading and unloading section is circular.
Adopt advantage of the present utility model to be:
One, the utility model drill collar body is provided with three tangent planes, form the triangular drill collar that the cross section has three ribs, compare with circular cross-section drill collar of the prior art, three ribs of the utility model have increased the annular space area of passage, reduced the contact area of mud cake on the drill collar and the borehole wall, can also play the effect of scraping mud cake, prevent the generation of sticking card accident effectively.
Two, the utility model tangent plane is symmetrical arranged with the center on the drill collar body, makes result of use of the present utility model reach best.
Three, the utility model tangent plane is plane or the curved surface shape, can select according to actual well drilled technology, has increased the flexibility of using.
Four, the utility model drill collar body one or both ends are provided with the loading and unloading section of being convenient to load and unload, and the cross section of loading and unloading sections be circular, and the convenient drill string handling instruments such as elevator and tong that use can reduce labor strength, the raising drilling efficiency.
Five, the utility model is simple in structure, and is easy to process, uses reliably effectively, reduced the generation of security incident, and the drilling efficiency height, can use in a large number in drillng operation.
Description of drawings
Fig. 1 partly cuts open structural representation for the utility model front
Fig. 2 is the utility model side structure schematic diagram
A-A cross section structure schematic diagram when Fig. 3 is the plane for the utility model tangent plane among Fig. 1
A-A cross section structure schematic diagram when Fig. 4 is curved surface for the utility model tangent plane among Fig. 1
Be labeled as among the figure: 1, drill collar body, 2, endoporus, 3, tangent plane, 4, rib, 5, the loading and unloading section.
The specific embodiment
The triangular drill collar that a kind of oil drilling is used comprises drill collar body 1, and drill collar body 1 is provided with three tangent planes 3, forms the triangular drill collar that the cross section has three ribs 4.And tangent plane 3 is symmetrical arranged with the center on drill collar body 1, and tangent plane 3 is plane or the curved surface shape.Be provided with the loading and unloading section of being convenient to load and unload 5 in drill collar body 1 one or both ends, and the cross section of loading and unloading section 5 is circular.
Below the utility model do is launched explanation:
The utility model is made up of drill collar body 1, endoporus 2, tangent plane 3 and rib 4.Its two ends screw thread is identical with common drill collar, and two ends can connect other drill collars and drill bit.Drill collar body 1 is selected the bigger drill collar of diameter for use, and endoporus 2 is used for carrying drilling fluid, and with three tangent planes 3 of center symmetric mode processing, tangent plane 3 is plane or curved surface, forms three ribs 4 in the drill collar appearance on drill collar body 1.Rib 4 place's wall thickness are thicker, increased the rigidity of drill collar, reduced the contact area of mud cake on the drill collar and the borehole wall, can also play the effect of scraping mud cake, prevented the generation of sticking card accident effectively; Three tangent planes 3 have increased the area of passage of annular space; The loading and unloading section 5 that one section rounded cross section is respectively arranged in the one or both ends of triangular drill collar, the convenient drill string handling instruments such as elevator and tong that use can reduce labor strength, improve drilling efficiency.
Production method of the present utility model is: process three tangent planes 3 in the axial symmetry mode on bigger drill collar body 1, tangent plane 3 can be plane or curved surface, forms three ribs 4 in the drill collar appearance; Respectively there is one section to be processed into circular cross-section in the one or both ends of triangular drill collar, forms loading and unloading section 5.
Obviously; those of ordinary skill in the art is according to technological know-how of being grasped and customary means; according to above said content, can also make the various ways that does not break away from the utility model fundamental technics thought, these pro forma conversion are all within protection domain of the present utility model.
Claims (4)
1, the triangular drill collar used of a kind of oil drilling comprises drill collar body (1), and it is characterized in that: described drill collar body (1) is provided with three tangent planes (3), forms the triangular drill collar that the cross section has three ribs (4).
2, the triangular drill collar used of oil drilling according to claim 1 is characterized in that: described tangent plane (3) is gone up at drill collar body (1) and is symmetrical arranged with the center.
3, the triangular drill collar used of oil drilling according to claim 1 and 2, it is characterized in that: described tangent plane (3) is plane or the curved surface shape.
4, the triangular drill collar used of oil drilling according to claim 1 and 2, it is characterized in that: described drill collar body (1) one or both ends are provided with the loading and unloading section of being convenient to load and unload (5), and the cross section of described loading and unloading sections (5) be a circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200788118U CN201334879Y (en) | 2009-01-21 | 2009-01-21 | Three-edged drill collar used in petroleum drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200788118U CN201334879Y (en) | 2009-01-21 | 2009-01-21 | Three-edged drill collar used in petroleum drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201334879Y true CN201334879Y (en) | 2009-10-28 |
Family
ID=41286529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200788118U Expired - Fee Related CN201334879Y (en) | 2009-01-21 | 2009-01-21 | Three-edged drill collar used in petroleum drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201334879Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929519A (en) * | 2014-03-18 | 2015-09-23 | 四川海沃石油工程技术有限公司 | Anti-deviation straight-drilling combined drilling tool for drilling engineering |
-
2009
- 2009-01-21 CN CNU2009200788118U patent/CN201334879Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929519A (en) * | 2014-03-18 | 2015-09-23 | 四川海沃石油工程技术有限公司 | Anti-deviation straight-drilling combined drilling tool for drilling engineering |
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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 |
Granted publication date: 20091028 Termination date: 20160121 |
|
| EXPY | Termination of patent right or utility model |