CN203394358U - High-temperature resistant drill - Google Patents
High-temperature resistant drill Download PDFInfo
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- CN203394358U CN203394358U CN201320491946.3U CN201320491946U CN203394358U CN 203394358 U CN203394358 U CN 203394358U CN 201320491946 U CN201320491946 U CN 201320491946U CN 203394358 U CN203394358 U CN 203394358U
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- drill body
- drill
- cutter
- temperature resistant
- porous layer
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Abstract
The utility model discloses a high-temperature resistant drill which is characterized by comprising a connector, a drill body, drill cutting teeth and a burning chamber. The lower end of the connector is connected with the drill body, the drill cutting teeth are arranged at the lower end of the drill body, a central pipe is arranged in the connector, a burning gun is arranged at the lower end of the central pipe, and a flame nozzle is arranged at the lower end of the burning gun. The burning chamber is arranged in the drill body, a high-temperature gas nozzle is arranged at the lower end of the drill body, and two ends of the burning chamber are communicated with the flame nozzle and the high-temperature gas nozzle respectively. An outer annular pipe is arranged in the connector and communicated with an air inlet of the burning gun. By means of the high-temperature resistant drill, a conventional flame thermal energy rock breaking method and a conventional mechanical rock breaking method are combined, the drill can work in the high-temperature environment with the temperature more than 700 DEG C, and the purpose of cutting low-strength rock by using the high-strength drill can be achieved, so that the rock is broken fast, and mechanical drilling speed is increased.
Description
Technical field
The utility model relates to a kind of high-temperature resistant drill bit.
Background technology
Drill bit is directly to contact with rock in drilling process, by the instrument of cutting, abrasive action fractured rock.At present in drilling engineering, extensive use mechanical energy is broken rock, and the drill bit of employing is mainly first-class by rock bit, PDC drill bit, diamond drill machine.On-the-spot applicable cases shows, rock bit efficiency of breaking rock is low, and single footage per bit is few, and the down-hole accidents such as lost cone bit freezing easily occur; PDC bit wear speed is fast, wedging difficulty; Diamond bit exists that rate of penetration is slow, shorter problem of life-span too, and these have all had a strong impact on the speed of oil-gas exploration and development.
In order to improve drilling efficiency, oil worker is stepping up to study efficient rock-breaking tool and method both at home and abroad, and has proposed some drilling by use of heat rock breaking methods, comprises the technology such as laser drill, hot melt drilling well, plasma channel drilling well, thermal rock fragmenting.These technology have all been proved high temperature can reduce rock strength effectively, thereby makes bit speed improve 10-100 doubly.These technology are at present mostly in the desk research stage, and corollary apparatus is also immature, with a certain distance from field popularization application, also exists.
In sum, conventional mechanical rock crushing tool improves rate of penetration effect corollary equipment remarkable not, novel breaking technique for rock can not realize industrial applications, be badly in need of a kind of novel drill bit of research and development, can improve rate of penetration by the comprehensive rock breaking method of machinery-heat energy, save drilling cost, and be significant for accelerating Oil And Gas Exploration And Development speed.
Utility model content
Technical problem to be solved in the utility model is: for the technical problem existing in above-mentioned prior art, provide a kind of high-temperature resistant drill bit that can improve efficiency of breaking rock and can effectively reduce drilling cost.
The technical scheme that the utility model adopts is: a kind of high-temperature resistant drill bit, it is characterized in that it comprises joint, drill body, Cutter, combustion chamber, and the lower end of joint is connected with drill body, and described Cutter is arranged on the lower end of drill body; Center culvert is set in joint, and the lower end of center culvert arranges burning rifle, and burning Qiang lower end arranges flame-thrower nozzle; In drill body inside, combustion chamber is set, in the lower end of drill body, is provided with high-temperature gas nozzle, the two ends of combustion chamber are communicated with respectively flame-thrower nozzle and high-temperature gas nozzle; In joint, be provided with outer ring pipeline, outer ring pipeline is connected with the air intake of burning rifle.
By technique scheme, periphery at drill body arranges the first cooling unit, described Cutter arranges along the circumferential interval, lower surface of drill body, periphery at Cutter is provided with the second cooling unit, and described first, second cooling unit is connected with the outer ring pipeline on joint.
By technique scheme, described the first cooling unit comprises the first porous layer, the first porous layer is arranged on the outer peripheral face of drill body, and be connected with drill body, on the first porous layer, being provided with a plurality of cold airflows portals, between the first porous layer and drill body outer peripheral face, be provided with the first cold airflow passage, in drill body, be provided with interior annulus line the first cold airflow passage is connected with outer ring pipeline; Described the second cooling unit comprises the second porous layer, the second porous layer is arranged on the outer peripheral face of Cutter, and on being connected with Cutter, on the second porous layer, being provided with a plurality of cold airflows portals, between the second porous layer and Cutter, be provided with the second cold airflow passage, in drill body, be provided with interior annulus line the second cold airflow passage is connected with outer ring pipeline.
By technique scheme, at the outer peripheral face of drill body and the outer peripheral face of Cutter, be provided with high temperature insulating layer.
By technique scheme, described high-temperature gas nozzle is annular, between the second cooling unit and high-temperature gas nozzle outer peripheral face, leaves gap.
By technique scheme, in drill body, be provided with the air preheat loop being connected with outer ring pipeline, described air preheat loop is connected with the air intake of burning rifle.
By technique scheme, described interior annulus line is connected with air preheat loop.
By technique scheme, described combustion chamber is that middle Kuan， two ends are narrow.
By technique scheme, described burning rifle comprises mixing chamber, ignition device, and ignition device is arranged in mixing chamber, and mixing chamber is connected with outer ring pipeline.
Inwall by technique scheme ， combustion chamber is provided with wolfram steel layer.
The obtained beneficial effect of the utility model is:
1, the utility model combines conventional flame heat energy rock breaking method and conventional mechanical rock breaking method, and this drill bit can more than 700 ℃ worked in hot environment, can realize the low intensive rock of high-intensity bit cutting, thereby break rock rapidly, improve efficiency of breaking rock;
2, by first, second cooling unit is set, in the periphery of drill body and the periphery of Cutter, all form cold air film, make drill body and Cutter in relative low temperature state, the intensity that keeps drill body and Cutter, the Cutter rotary cutting of utilization in relative low temperature state destroys the low intensive rock of high temperature under it, further improves efficiency of breaking rock;
3, the utility model can be used for mohole drilling, owing to drilling at present well depth, be confined in 12000 meters, and Yue Shen stratum, strata pressure is larger, and formation rock temperature is higher, and rock more easily melts, and drilling well is easier, and rate of penetration is higher.
Accompanying drawing explanation
The main sectional view of the first embodiment that Fig. 1 the utility model provides;
Fig. 2 is the structural representation of the first cooling unit of embodiment mono-;
Fig. 3 is the upward view of Fig. 1;
Fig. 4 is the structural representation of the first cooling unit of embodiment bis-.
In figure: 1, double-walled nipple; 2, burning rifle; 3, drill body; 4, interior annulus line; 5, the first cooling unit; 6, Cutter; 7, center culvert; 8, outer ring pipeline; 9, flame-thrower nozzle; 10, combustion chamber; 11, air preheat loop; 12, high-temperature gas nozzle; 13, cold airflow portals; 14, the first cold airflow passage; 15, the first porous layer; 16, high temperature insulating layer, 17, mixing chamber, 18, ignition device, the 19, second cooling unit, the 20, second porous layer, the 21, second cold airflow passage.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the present embodiment provides a kind of high-temperature resistant drill bit, and it comprises double-walled nipple 1, burning rifle 2, drill body 3 and Cutter 6.The lower end of double-walled nipple 1 is connected with drill body 3, and Cutter 6 is arranged on the lower end of drill body 3; The centre of described double-walled nipple 1 is hollow, and at interior center culvert 7 and the burning rifle 2 of arranging of double-walled nipple 1, the lower end of center culvert 7 arranges burning rifle 2, lower surface and the drill body seal arrangement of burning rifle 2, and the lower end of burning rifle 2 arranges flame-thrower nozzle 9; In drill body 3 inside, combustion chamber 10 is set, described combustion chamber 10 arranges annular high-temperature gas nozzle 12 for 10 lower end, Zhai， combustion chamber, middle Kuan， two ends.The inwall of double-walled nipple 1 is provided with outer ring pipeline 8, in drill body 3, be provided with interior annulus line 4, air preheat loop 11, interior annulus line 4 is communicated with the outer ring pipeline 8 and air preheat loop 11 of double-walled nipple 1, and described air preheat loop 11 is connected with the air intake of burning rifle 2.
The utility model, when work, can make its rock temperature around reach very high, and when High temperature rocks passes to its high temperature after drill body 3 and Cutter 6, the intensity of drill body 3 and Cutter 6 can reduce, and has a strong impact on its operating efficiency.In order to keep the intensity of drill body 3 and Cutter 6, periphery at drill body 3 is set with the first cooling unit 5, described Cutter 6 arranges along the circumferential interval, lower surface of drill body, in the lower surface of Cutter 6, be provided with the cutting teeth of arc, outside the periphery Chu Qi lower surface of Cutter, be set with the second cooling unit.
In the present embodiment, as shown in Figure 2, the first cooling unit 5 comprises the first porous layer 15, the first porous layer 15 is sleeved on the outer peripheral face of drill body 3, and be fixed on drill body 3, on the first porous layer 15, be provided with a plurality of cold airflows and portal 13, between the first porous layer 15 and drill body 3, be provided with the first cold airflow passage 14 of annular, at the interior annulus line 4 of drill body 3 interior settings, the first cold airflow passage 14 is connected with outer ring pipeline 8.
As shown in Figure 3, described the second cooling unit 19 comprises the second porous layer 20, the second porous layer 20 is sleeved on the surrounding of Cutter 6, and be fixed on Cutter 6, on the second porous layer 20, being provided with a plurality of cold airflows portals, between the second porous layer 20 and the outer peripheral face of Cutter, be provided with the second cold airflow passage 21 of annular, interior annulus line 4 is connected the second cold airflow passage 21 simultaneously, wherein, between the second porous layer 20 and high-temperature gas nozzle 12, leave gap to reduce high-temperature gas nozzle 12 to the heat transmission between Cutter, thereby make the cooling effect of the second cooling unit 19 better.
Wherein, the first porous layer 15 and the second porous layer 20 are heat resistant and wear resistant porous layer.
Wherein, burning rifle 2 comprises mixing chamber 17, ignition device 18, and ignition device 18 is arranged in mixing chamber, and mixing chamber 17 is connected with center culvert 7 and air preheat loop 11 respectively.
The inwall of the present embodiment Zhong， combustion chamber 10 is provided with one deck wolfram steel, to reduce the impact of high temperature on drill body 3 intensity.
In the present embodiment, Cutter 6 adopts PDC cutting teeth.
When work, the upper end of double-walled nipple 1 is connected with double-wall drill pipe, toward the interior input fuel of center culvert 7, fuel enters the mixing chamber 17 of burning rifle 2 by center culvert 7, the interior input cold air of outer ring pipeline 8, the air mixing chamber that air enters burning rifle 2 through interior annulus line 4 and the air preheat loop 11 of drill body 3, start ignition device 18, make mist burning, fuel and air fully burn at flame-thrower nozzle 9 and combustion chamber 10 through burning rifle 2, produce high temperature and high speed combustion gas, high-temperature fuel gas temperature is over 700 ℃, through high-temperature gas nozzle 12, rock under high fast direction Cutter 6, the upper epidermis of rock is heated up rapidly, rock strength declines, now the intensity of rock for not heating rock strength 1/3 or be less than 1/3, and the little rock of coefficient of thermal conductivity produces obvious temperature gradient, the rock development of heat is destroyed, the landwaste of generation is carried out shaft bottom by high-temperature fuel gas, part cold air is by the interior annulus line 4 of drill body 3, thereby enter the first cooling unit 5 and the second cooling unit 19, when cold air is during through the first cold airflow passage 14, from 13 discharges of portalling of the cold airflow of the first porous layer 15, cold airflow forms cold air film at the first porous layer 15 external surfaces, thereby make drill body in relative low temperature state, kept drill body intensity, when cold air is during through the second cold airflow passage 21, from the discharge of portalling of the cold airflow of the second porous layer, cold airflow forms cold air films at the second porous layer 20 external surfaces, thereby has kept the intensity of Cutter.By Cutter 6 rotary cuttings in relative low temperature state, destroy the low intensive rock of high temperature under it, thereby improve efficiency of breaking rock.
Embodiment 2:
As shown in Figure 4, embodiment 2 is basic identical with the structure of embodiment 1, and difference is that the outer peripheral face of drill body 3 and Cutter 6 is provided with high temperature insulating layer 16 (periphery of take in Fig. 4 at drill body 3 arranges high temperature insulating layer 16 and describes as example).High temperature insulating layer 16 is heat insulation to the heat energy of drill body 3 and Cutter 6 transmission radiation by rock, and the temperature of drill body 3, Cutter 6 is remained in uniform temperature, has further improved application life of the present utility model.
Claims (10)
1. a high-temperature resistant drill bit, is characterized in that it comprises joint, drill body, Cutter, combustion chamber, and the lower end of joint is connected with drill body, and described Cutter is arranged on the lower end of drill body; Center culvert is set in joint, and the lower end of center culvert arranges burning rifle, and burning Qiang lower end arranges flame-thrower nozzle; In drill body inside, combustion chamber is set, in the lower end of drill body, is provided with high-temperature gas nozzle, the two ends of combustion chamber are communicated with respectively flame-thrower nozzle and high-temperature gas nozzle; In joint, be provided with outer ring pipeline, outer ring pipeline is connected with the air intake of burning rifle.
2. a kind of high-temperature resistant drill bit according to claim 1, it is characterized in that, in the periphery of drill body, the first cooling unit is set, described Cutter arranges along the circumferential interval, lower surface of drill body, periphery at Cutter is provided with the second cooling unit, and described first, second cooling unit is connected with the outer ring pipeline on joint.
3. a kind of high-temperature resistant drill bit according to claim 2, it is characterized in that described the first cooling unit comprises the first porous layer, the first porous layer is arranged on the outer peripheral face of drill body, and be connected with drill body, on the first porous layer, being provided with a plurality of cold airflows portals, between the first porous layer and drill body outer peripheral face, be provided with the first cold airflow passage, in drill body, be provided with interior annulus line the first cold airflow passage is connected with outer ring pipeline; Described the second cooling unit comprises the second porous layer, the second porous layer is arranged on the outer peripheral face of Cutter except bottom surface, and be connected with Cutter, on the second porous layer, being provided with a plurality of cold airflows portals, between the second porous layer and Cutter, be provided with the second cold airflow passage, the interior annulus line arranging in drill body is connected the second cold airflow passage with outer ring pipeline.
4. a kind of high-temperature resistant drill bit according to claim 3, is characterized in that being provided with high temperature insulating layer at the outer peripheral face of drill body and the outer peripheral face of Cutter.
5. according to a kind of high-temperature resistant drill bit described in claim 3 or 4, it is characterized in that described high-temperature gas nozzle, for annular, leaves gap between the second cooling unit and high-temperature gas nozzle outer peripheral face.
6. a kind of high-temperature resistant drill bit according to claim 3, is characterized in that being provided with in drill body the air preheat loop being connected with outer ring pipeline, and described air preheat loop is connected with the air intake of burning rifle.
7. a kind of high-temperature resistant drill bit according to claim 6, is characterized in that described interior annulus line is connected with air preheat loop.
8. a kind of high-temperature resistant drill bit according to claim 1 and 2, is characterized in that described combustion chamber is that middle Kuan， two ends are narrow.
9. a kind of high-temperature resistant drill bit according to claim 1 and 2, is characterized in that described burning rifle comprises mixing chamber, ignition device, and ignition device is arranged in mixing chamber, and mixing chamber is connected with outer ring pipeline.
10. a kind of high-temperature resistant drill bit according to claim 1 and 2, is characterized in that the inwall in combustion chamber is provided with wolfram steel layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320491946.3U CN203394358U (en) | 2013-08-13 | 2013-08-13 | High-temperature resistant drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320491946.3U CN203394358U (en) | 2013-08-13 | 2013-08-13 | High-temperature resistant drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394358U true CN203394358U (en) | 2014-01-15 |
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ID=49905894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320491946.3U Withdrawn - After Issue CN203394358U (en) | 2013-08-13 | 2013-08-13 | High-temperature resistant drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394358U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388455A (en) * | 2013-08-13 | 2013-11-13 | 中国石油化工集团公司 | High temperature-resistant drill bit |
-
2013
- 2013-08-13 CN CN201320491946.3U patent/CN203394358U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388455A (en) * | 2013-08-13 | 2013-11-13 | 中国石油化工集团公司 | High temperature-resistant drill bit |
| CN103388455B (en) * | 2013-08-13 | 2015-09-23 | 中石化石油工程机械有限公司 | A kind of high-temperature resistant drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SINOPEC PETROLEUM ENGINEERING MACHINERY CO., LTD. Free format text: FORMER OWNER: SINOPEC GROUP Effective date: 20150215 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100728 CHAOYANG, BEIJING TO: 430223 WUHAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150215 Address after: 430223, Hubei, East Lake province Wuhan New Technology Development Zone 77 Optics Valley Avenue, Optics Valley finance port, block A2, 12 Patentee after: Sinopec Petroleum Engineering Machinery Co., Ltd. Patentee after: Research Institute of SINOPEC Petroleum Engineering Machinery Co., Ltd. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Research Institute of SINOPEC Petroleum Engineering Machinery Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20150923 |
|
| RGAV | Abandon patent right to avoid regrant |