CN2761810Y - Biwall drill rod for petroleum well drilling - Google Patents
Biwall drill rod for petroleum well drilling Download PDFInfo
- Publication number
- CN2761810Y CN2761810Y CN 200420070691 CN200420070691U CN2761810Y CN 2761810 Y CN2761810 Y CN 2761810Y CN 200420070691 CN200420070691 CN 200420070691 CN 200420070691 U CN200420070691 U CN 200420070691U CN 2761810 Y CN2761810 Y CN 2761810Y
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- China
- Prior art keywords
- outer tube
- interior pipe
- pipe
- interior
- top connection
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- Expired - Fee Related
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Abstract
The utility model relates to a double-wall drill rod for a petroleum drilling well, which is used for the petroleum drilling construction of the gas-liquid two-phase dividing drilling liquid of an oilfield. The utility model is characterized in that an upper joint of an outer pipe, an outer pipe body and a lower joint of the outer pipe are orderly connected in a friction and butting welding mode into the outer pipe, an inner sleeve, an upper joint of an inner pipe, an inner pipe body, and a lower joint of the inner pipe are orderly connected in a thread buckling mode into the inner pipe, and thread buckling steps (The outer side of the upper joint of the inner pipe and the inner side of the upper joint of the outer pipe are provided with the thread buckling steps) are connected in a thread buckling mode into the petroleum drilling double-wall drill rod. The utility model solves the problems that mechanicalness existing in the prior art can not meet the construction conditions of the petroleum drilling well, and the flow resistance of a drill rod for the petroleum drilling well is large after the drill rod is converted. The outer pipe can be used as a common drill rod for the petroleum drilling well after the inner pipe is taken out. The utility model can be widely applied to the construction operation of the petroleum drilling well of the gas-liquid two-phase dividing drilling liquid of the oilfield.
Description
Technical field:
The utility model relates to the working oil drilling double-wall drill pipe of oil drilling of a kind of oil field gas-liquid two-phase shunting drilling fluid.
Background technology:
Present known geology double-wall drill pipe is mainly used in geological drilling, and it is made up of interior pipe and outer tube, and interior pipe upper end is provided with step and is articulated on the interior step in outer tube upper end.This double-wall drill pipe tube wall is thin, length is short, sealing load is low, only is applicable to that the geological drilling of hundreds of rice well depth is got core, for inapplicable under big the pressure of the drill of oil drilling construction, high pulling torque, the high pump pressure working condition.If the oil drilling drilling rod is changed system into the oil drilling double-wall drill pipe, though its mechanical performance can satisfy the demand, less because of drilling rod internal diameter with the mechanical performance grade, make behind the double-wall drill pipe that flow resistance is very big to be unfavorable for the oil drilling construction into.
The utility model content:
In order to overcome deficiency of the prior art, the utility model provides a kind of oil drilling double-wall drill pipe, and mechanical performance requirement and flow resistance that this drilling rod can not only satisfy the oil drilling construction are little, and interior pipe taking-up back outer tube can be used as the use of common petroleum drilling well drilling bar.
The technical scheme that the utility model technical solution problem is adopted is: outer tube top connection, outer tube body and outer tube lower contact are welded into outer tube with the friction duct butt-welding method in proper order; Screwed connection becomes interior pipe with interior pipe lower contact order for interior cover, interior pipe top connection, interior tube body, the top connection of interior pipe and the interior pipe lower contact outside are provided with rib makes interior Guan Juzhong, the upper outside of interior pipe top connection and the inboard of outer tube top connection are equipped with the screw thread step, pipe and outer tube screwed connection in making.Interior pipe length overall is smaller than the outer tube length overall, and interior pipe upper and lower end all has certain depth in the outer tube the inside, the direct contact bottom surface of pipe in the time of can preventing so on the one hand that double-wall drill pipe from uprightly discharging, pipe is impaired in making, pipe just inserted mutually in outer pipe thread was screwed into behind the certain depth earlier in the time of can guaranteeing on the other hand that two double-wall drill pipes link to each other, with the reliability of the seal of tube in guaranteeing.Outer tube top connection and outer tube lower contact adopt the general joint of petroleum drill rod body transformation of the way to form, in order to guarantee mechanical performance index and rational flow resistance, the button-type of the upper and lower joint of outer tube is a self-designed extraordinary drilling rod button-type (DD146), and big footpath root is provided with wear-resisting band outside the upper and lower joint of outer tube, to increase the abrasion resistance of outer tube.The operation that double-wall drill pipe is interconnected to drill string is the same with common drilling rod operation, and its middle external tube is that screwed connection adds end face seal, interior pipe be between interior pipe lower contact and the interior pipe mutually the gap of insertion add the multiple tracks sealing ring movingly and seal.This double-wall drill pipe is if load onto sheath with interior pipe taking-up and in the outer tube top connection, and then outer tube can be done the use of common petroleum drilling rod.
The utility model beneficial effect is simple in structure, this double-wall drill pipe can not only satisfy outside the characteristics that oil drilling construction working condition mechanical performance down requires and flow resistance is little, and loads onto sheath after interior pipe taken out in the outer tube top connection and can do the use of common petroleum drilling rod.
Description of drawings:
Fig. 1 is the utility model overall structure schematic diagram.
Fig. 2 can make common petroleum drilling rod schematic diagram for the utility model.
Among the figure 1, the outer tube top connection, 2, interior cover, 3, sealing ring, 4, interior pipe top connection, 5, wear-resisting band, 6, outer tube body, 7, interior tube body, 8, the outer tube lower contact, 9, interior pipe lower contact, 10, sheath.
The specific embodiment:
In Fig. 1, double-wall drill pipe is made up of interior pipe and outer tube, and outer tube top connection 1, outer tube body 6 and outer tube lower contact 8 orders are rubbed to being welded into outer tube; Again interior cover 2, interior pipe top connection 4, interior tube body 7 and interior pipe lower contact 9 order screwed connections are formed interior pipe, the component in outer tube, the interior pipe are cylindrical shape; The upper outside of interior pipe top connection 4 and the inboard of outer tube top connection 1 are provided with the screw thread step and form the oil drilling double-wall drill pipe with screwed connection; The top connection 4 of interior pipe is equipped with rib so that interior Guan Juzhong with the outside of interior pipe lower contact 9, screwed connection place in interior cover 2 and interior pipe top connection 4 is provided with sealing ring 3, interior pipe total length is shorter than the outer tube total length, and the distance of outer tube lower surface is arrived in interior pipe upper surface greater than interior pipe lower surface to the distance of outer tube upper surface, and on the interior pipe, there is certain depth the lower end in the outer tube the inside, the direct contact bottom of pipe in the time of can preventing so on the one hand that double-wall drill pipe from uprightly discharging, pipe is impaired in making, pipe just inserted mutually in outer pipe thread was screwed into behind the certain depth earlier in the time of can guaranteeing on the other hand that two double-wall drill pipes link to each other, with the reliability of the seal of tube in guaranteeing; Outer tube top connection 1 and outer tube lower contact 8 adopt the general oil drill rocker body transformation of the way to form, in order to guarantee mechanical performance index and rational flow resistance, the button-type of the upper and lower joint of outer tube is designed to extraordinary drilling rod button-type (DD146), wear-resistingly is with 5 for the abrasion resistance that increases outer tube is manufactured with at big footpath, outer tube upper and lower joint outside root; The operation that double-wall drill pipe is interconnected to drill string is the same with common drilling rod operation, and its middle external tube is that screwed connection adds end face seal, interior pipe be between interior pipe lower contact 9 and the interior cover 2 mutually the insertion gap add multiple tracks sealing ring 3 movingly and seal.
In Fig. 2, can be used as the use of common petroleum drilling rod if interior pipe is taken out and in outer tube top connection 1, load onto 10 outer tubes of sheath.
Claims (2)
1, a kind of oil drilling double-wall drill pipe is made up of interior pipe and outer tube; It is characterized in that: outer tube top connection (1), outer tube body (6) and outer tube lower contact (8) order are rubbed to being welded into outer tube; Again interior cover (2), interior pipe top connection (4), interior tube body (7) and the screwed connection of interior pipe lower contact (9) order are formed interior pipe, the upper outside of interior pipe top connection (4) and the inboard of outer tube top connection (1) are provided with the screw thread step and form the oil drilling double-wall drill pipe with screwed connection, component in outer tube, the interior pipe are cylindrical shape, interior pipe total length is shorter than the outer tube total length, and the distance of outer tube lower surface is arrived in interior pipe upper surface greater than interior pipe lower surface to the distance of outer tube upper surface.
2, oil drilling double-wall drill pipe according to claim 1 is characterized in that: interior pipe top connection (4) is equipped with rib with the outside of interior pipe lower contact (9); The big footpath of the outer tube top connection (1) and outer tube lower contact (8) outside root is manufactured with wear-resisting band (5); Interior pipe seals for mutual insertion gap between interior pipe lower contact (9) and the interior cover (2) adds multiple tracks sealing ring (3) movingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070691 CN2761810Y (en) | 2004-09-17 | 2004-09-17 | Biwall drill rod for petroleum well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070691 CN2761810Y (en) | 2004-09-17 | 2004-09-17 | Biwall drill rod for petroleum well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2761810Y true CN2761810Y (en) | 2006-03-01 |
Family
ID=36094938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420070691 Expired - Fee Related CN2761810Y (en) | 2004-09-17 | 2004-09-17 | Biwall drill rod for petroleum well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2761810Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012048458A1 (en) * | 2010-10-12 | 2012-04-19 | 石家庄中煤装备制造股份有限公司 | Assembled drilling tool |
| CN103410450A (en) * | 2013-08-13 | 2013-11-27 | 镇江安达煤矿专用设备有限公司 | Double-tubular drill rod |
| CN104481419A (en) * | 2014-12-01 | 2015-04-01 | 无锡市钻通工程机械有限公司 | Drill rod of double-wall horizontal directional drilling machine |
| CN106837202A (en) * | 2017-04-13 | 2017-06-13 | 长沙矿山研究院有限责任公司 | The geological prospecting double-layer drill rod and its supporting drilling tool cored for negative pressure |
| CN106894769A (en) * | 2017-03-06 | 2017-06-27 | 中国石油大学(华东) | A kind of fast joint type double-layer drill rod |
| CN108894732A (en) * | 2018-09-21 | 2018-11-27 | 黄桂霞 | Double-wall drill pipe |
| CN108894733A (en) * | 2018-09-25 | 2018-11-27 | 徐州徐工基础工程机械有限公司 | Double-wall drill pipe and drilling machine |
-
2004
- 2004-09-17 CN CN 200420070691 patent/CN2761810Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012048458A1 (en) * | 2010-10-12 | 2012-04-19 | 石家庄中煤装备制造股份有限公司 | Assembled drilling tool |
| RU2528318C1 (en) * | 2010-10-12 | 2014-09-10 | Шицзячжуан Чжунмэй Коул Майн Эквипмент Мэнуфэкче Ко., Лтд. | Assembly drilling tool |
| CN103410450A (en) * | 2013-08-13 | 2013-11-27 | 镇江安达煤矿专用设备有限公司 | Double-tubular drill rod |
| CN104481419A (en) * | 2014-12-01 | 2015-04-01 | 无锡市钻通工程机械有限公司 | Drill rod of double-wall horizontal directional drilling machine |
| CN106894769A (en) * | 2017-03-06 | 2017-06-27 | 中国石油大学(华东) | A kind of fast joint type double-layer drill rod |
| CN106894769B (en) * | 2017-03-06 | 2019-06-21 | 中国石油大学(华东) | A kind of fast joint type double-layer drill rod |
| CN106837202A (en) * | 2017-04-13 | 2017-06-13 | 长沙矿山研究院有限责任公司 | The geological prospecting double-layer drill rod and its supporting drilling tool cored for negative pressure |
| CN108894732A (en) * | 2018-09-21 | 2018-11-27 | 黄桂霞 | Double-wall drill pipe |
| CN108894733A (en) * | 2018-09-25 | 2018-11-27 | 徐州徐工基础工程机械有限公司 | Double-wall drill pipe and drilling machine |
| CN108894733B (en) * | 2018-09-25 | 2024-04-30 | 徐州徐工基础工程机械有限公司 | Double-wall drill rod and drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060301 Termination date: 20100917 |