CN2732975Y - Moving-in depth control PDC bit for directional well - Google Patents
Moving-in depth control PDC bit for directional well Download PDFInfo
- Publication number
- CN2732975Y CN2732975Y CN 200420096604 CN200420096604U CN2732975Y CN 2732975 Y CN2732975 Y CN 2732975Y CN 200420096604 CN200420096604 CN 200420096604 CN 200420096604 U CN200420096604 U CN 200420096604U CN 2732975 Y CN2732975 Y CN 2732975Y
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- China
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- pdc
- moving
- bit
- composite sheet
- depth control
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Abstract
The utility model relates to a moving-in depth control PDC bit for a directional well, belonging to the structural improvement of the PDC bit for a petroleum and natural gas directional well. The moving-in depth control PDC bit for a directional well is characterized in that the rear of a PDC composite sheet is provided with a moving-in depth control block; on one hand, the purpose that the PDC composite sheet is controlled to move in the depth of the earth through the exposure height of the moving-in control block is achieved; on the other hand, the lateral swinging of the bit can be controlled through the moving-in depth control block in the orbit cut by the front PDC composite sheet, and the purpose that the bit is stabilized is achieved. The research indicates that the cutting torque of the utility model is low, and power drills can be made to keep in a continuous good working sate, which is favorable for drilling out a well bore with a high quality track; simultaneously, the mechanical drilling rate is greater than that of a roller bit, and accordingly, the efficiency of the directional drilling is improved.
Description
Technical field
The utility model belongs to the architecture advances of petroleum gas directional well drill bit.
Background technology
Power drilling tool directed drilling system is mainly adopted in domestic each oil field directional drilling at present, by the power drilling tool that is connected on drill bit drill bit is led.When the conventional directed PDC drill bit of field by using carries out orientation, because the very sharp easy wedging of PDC composite sheet stratum, therefore the wedging of PDC drill bit is very capable, the reaction torque that produces is big on the one hand, when surpassing the nominal torque of power drilling tool, can cause power drilling tool stall, influence positioning operation and quicken the infringement of power drilling tool; On the other hand, can cause the tool-face fluctuation, in order to satisfy the tool-face requirement of directed design, in the process of orientation, continuous movable drilling tool, average rate of penetration can reduce greatly like this.
Summary of the invention
In orientation process, cause the excessive and tool-face fluctuation problem of reaction torque for solving the PDC drill bit, has only the wedging ability that reduces the PDC drill bit, the reaction torque that drill bit produces in the process of using is less like this, can reduce the fluctuation of tool-face simultaneously significantly, therefore can mate with power drilling tool.The purpose of this utility model is to provide a kind of dark control Directional PDC Bits of eating for the petroleum gas directed drilling.
The utility model technical scheme that adopts that achieves the above object is: install in PDC composite sheet back and eat dark controll block, the proud exposure of eating dark controll block is lower than the PDC composite sheet of front: the degree of depth that can control cutting teeth wedging stratum on the one hand, so just can the required torque of control action on cutting teeth, through adjusting cutting teeth exposure and blade geometry, when reaching drill bit and creeping into normal desired eat dark, surpassing this eats deeply, the dark controll block supporting surface of eating of back will the wedging shaft bottom, in case supporting surface wedging stratum, just increased the contact area in drill bit and shaft bottom, the result is that the wedging ability of drill bit reduces significantly, so just can reach the purpose that reduces moment of torsion and tool-face fluctuation, but can obviously not reduce rate of penetration simultaneously; On the other hand, the composite sheet of eating dark controll block and front is with rail, eats the teeter of control drill bit in the track that dark controll block can PDC composite sheet in front cuts out, reaches the purpose of stablizing drill bit.
The beneficial effects of the utility model are that the reaction torque that the PDC drill bit produces in the process of orientation is little, and is light to the infringement of power drilling tool, can prolong the application life of power drilling tool, can reduce the fluctuation of tool-face simultaneously, improves directional effect and average rate of penetration.
Description of drawings
Fig. 1 is a kind of schematic diagram of eating dark control Directional PDC Bits:
1. bit body 2.PDC composite sheet 3. is eaten dark controll block 4. nozzles
The specific embodiment
Now the utility model will be further described in conjunction with Figure of description: in the directed drilling process, at first other downhole tools such as the utility model and power drilling tool, stabilizer, drill collar, drilling rod are coupled together, arrive the shaft bottom down, carry out normal directed drilling operation then.When [2] PDC composite sheet wedging depth of stratum surpasses predefined eating when dark, [3] are eaten dark controll block and are not contacted the stratum at this moment, and the moment of torsion that drill bit produces is little, and tool-face is steady, and drill bit can obtain higher drilling speed; If [2] the PDC composite sheet is eaten dark default the eating when dark that surpass, [3] eating dark controll block supporting surface will the wedging stratum, increased the contact area in drill bit and shaft bottom, therefore the wedging ability of drill bit reduces significantly, so just can reach the purpose that reduces moment of torsion and tool-face fluctuation, can obviously not reduce rate of penetration simultaneously.The on-the-spot proof of using: carry out the directed drilling operation with the utility model, can guarantee that not only power drilling tool is in good working order all the time, help getting out the high well of track quality, and the utility model average rate of penetration height, thereby directed drilling efficient improved.
Claims (3)
1. eat dark control Directional PDC Bits for one kind, mainly form, it is characterized in that being equipped with and eat dark controll block [3] in PDC composite sheet [2] back by bit body, PDC composite sheet and nozzle.
2. PDC drill bit according to claim 1 is characterized in that the proud exposure of eating dark controll block [3] is lower than [2] PDC composite sheet.
3. PDC drill bit according to claim 1 is characterized in that PDC composite sheet [2] and eats dark controll block [3] with rail that promptly they are on the circle of same radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096604 CN2732975Y (en) | 2004-09-24 | 2004-09-24 | Moving-in depth control PDC bit for directional well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096604 CN2732975Y (en) | 2004-09-24 | 2004-09-24 | Moving-in depth control PDC bit for directional well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2732975Y true CN2732975Y (en) | 2005-10-12 |
Family
ID=35068816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420096604 Expired - Fee Related CN2732975Y (en) | 2004-09-24 | 2004-09-24 | Moving-in depth control PDC bit for directional well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2732975Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104769207A (en) * | 2012-10-11 | 2015-07-08 | 哈里伯顿能源服务公司 | Drill bit apparatus to control torque on bit |
| CN102084082B (en) * | 2008-04-23 | 2015-07-29 | 沙特***石油公司 | Polycrystalline diamond compact bit insert design and arrangement of nozzles |
| CN104929523A (en) * | 2015-05-13 | 2015-09-23 | 北京金工万邦石油技术开发有限公司 | PDC (polycrystalline diamond compact) bit for hydraulic rotary percussion equipment |
| CN106460465A (en) * | 2014-03-11 | 2017-02-22 | 史密斯国际有限公司 | Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements |
| CN107208476A (en) * | 2015-03-25 | 2017-09-26 | 哈利伯顿能源服务公司 | Adjustable depth of cut control to downhole well tool |
| US10030452B2 (en) | 2013-03-14 | 2018-07-24 | Smith International, Inc. | Cutting structures for fixed cutter drill bit and other downhole cutting tools |
| US10309156B2 (en) | 2013-03-14 | 2019-06-04 | Smith International, Inc. | Cutting structures for fixed cutter drill bit and other downhole cutting tools |
-
2004
- 2004-09-24 CN CN 200420096604 patent/CN2732975Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102084082B (en) * | 2008-04-23 | 2015-07-29 | 沙特***石油公司 | Polycrystalline diamond compact bit insert design and arrangement of nozzles |
| CN104769207A (en) * | 2012-10-11 | 2015-07-08 | 哈里伯顿能源服务公司 | Drill bit apparatus to control torque on bit |
| US10030452B2 (en) | 2013-03-14 | 2018-07-24 | Smith International, Inc. | Cutting structures for fixed cutter drill bit and other downhole cutting tools |
| US10309156B2 (en) | 2013-03-14 | 2019-06-04 | Smith International, Inc. | Cutting structures for fixed cutter drill bit and other downhole cutting tools |
| CN106460465A (en) * | 2014-03-11 | 2017-02-22 | 史密斯国际有限公司 | Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements |
| US10287825B2 (en) | 2014-03-11 | 2019-05-14 | Smith International, Inc. | Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements |
| CN106460465B (en) * | 2014-03-11 | 2020-05-05 | 史密斯国际有限公司 | Cutting element having non-planar surface and downhole cutting tool employing same |
| US11215012B2 (en) | 2014-03-11 | 2022-01-04 | Schlumberger Technology Corporation | Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements |
| CN107208476A (en) * | 2015-03-25 | 2017-09-26 | 哈利伯顿能源服务公司 | Adjustable depth of cut control to downhole well tool |
| CN104929523A (en) * | 2015-05-13 | 2015-09-23 | 北京金工万邦石油技术开发有限公司 | PDC (polycrystalline diamond compact) bit for hydraulic rotary percussion equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |