CN202913956U - Bit nozzle for well drilling - Google Patents
Bit nozzle for well drilling Download PDFInfo
- Publication number
- CN202913956U CN202913956U CN 201220642793 CN201220642793U CN202913956U CN 202913956 U CN202913956 U CN 202913956U CN 201220642793 CN201220642793 CN 201220642793 CN 201220642793 U CN201220642793 U CN 201220642793U CN 202913956 U CN202913956 U CN 202913956U
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- nozzle
- bit
- outlet
- drill bit
- bit nozzle
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Abstract
The utility model discloses a bit nozzle for well drilling. The bit nozzle for the well drilling comprises a drill bit body, an inlet and an outlet, wherein the inlet and the outlet are respectively formed at two ends of the drill bit body. A hollow passage is formed in the middle part of the drill bit body, in the passage, two side wall faces of the upper portion of the inner wall of the drill bit body are partially extend inwards and upwards and contract gradually, and so that two symmetrical protruding parts are formed. The upper end faces of the two protruding parts are parallel and level to the upper end face of the drill bit body, and gaps are formed between endpoints of the inner sides of the two protruding parts. The outlet is divided to be of an 8 shape which is communicated in the middle by the protruding parts. An annular corrosion prevention groove is further formed in the upper end face of the drill bit body and around the outlet. The bit nozzle can lower pressure drop of the bit nozzle and increase one-time stroke action of the bit. The corrosion prevention groove is arranged so that partial excessive erosion of the bit nozzle can be avoided. The bit nozzle for the well drilling is simple, reliable in performance and low in processing cost.
Description
Technical field
The utility model relates to a kind of oil, natural gas extraction drilling bit, particularly relates to a kind of drilling well bit nozzle.
Background technology
Along with updating and the constantly raising of drilling life of bit of the development of domestic rig speed-raising technical research, bit model, mainly concentrate on two aspects as the auxiliary hydraulic drilling effect research that cooperates the drill bit efficiency of breaking rock to improve: the one, the broken rock effect research of strong drilling fluid jet stream nuclear, the one, improve and strengthen shaft bottom drilling fluid cross flow thruster effect, avoid drilling cuttings to repeat broken research.Clearly: above research mainly concentrates on a certain moment of hydraulic jetting drilling-well technology, perhaps is confined to study in certain very of short duration period.And the pressing issues that present situ of drilling well faces are to enter in the well life cycle at a complete drill bit, how to bring into play better the effect of waterpower auxiliary rock.On-the-spot situation is: because upper formation is softer, can give full play to the usefulness of hydraulic jetting drilling-well, need to combine at the very start the bit nozzle combination of reduced size.When drill bit pierces the stratum very behind the progress chi, drilling tool water hole press the annular pressure lost of consumption and bore hole annulus all to increase along journey, according to experience, do not occur in the situation of larger variation in drilling assembly and property of drilling fluid, the pump pressure increase is about about 3.5MPa/Km.In this high-pressure hydraulic jet drilling process, just the pressure drop disintegration of a part of bit port need to be reduced, in order to satisfy the needs of a vice-minister bit run.
The Modern Water Conservancy breaking technique for rock studies show that, independent high-energy jet stream nuclear can not improve the rate of penetration of drill bit fully and effectively, how to impel the broken landwaste of drill bit to break away from the shaft bottom, and fully carry up, reducing drilling cuttings in the repetition fragmentation in shaft bottom, then is another key problem that improves the hydraulic drilling efficient studies.The cluster fluidic technology cooperates with the organic of fan-shaped diffusion jet technology, can find equalization point for the research of modern hydraulic drilling technology to a certain extent.Situ of drilling well bit nozzle is made up and preferred process in, bit nozzle often appears by erosion or the excessive phenomenon of erosion, the drill body that has even bad by thorn, this has affected research and the application of waterpower high-pressure jet drilling technology to a certain extent.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of bit nozzle, when satisfying the broken rock effect of drill bit, can cool off, increase the drill bit one stroke to drill bit and protect drill body not by erosion.
For this reason, the technical solution of the utility model is as follows:
A kind of drilling well bit nozzle, comprise drill body and the entrance and exit that is respectively formed at described drill body two ends, form the runner of hollow at described drill body middle part, in described runner, local inwardly by the two side walls of described drill body upper inside wall, extend upward and shrink gradually, form the lug boss of two symmetries, the upper surface of described two lug bosses is concordant with the upper surface of described drill body, form the gap between the inboard end points of two lug bosses, described outlet is slit into the figure of eight of intermediate connection by described bossing.
For preventing that the utility model nozzle is by the excessive erosion of high speed drilling fluid jet; on the upper surface of described drill body, around described outlet, also be formed with the corrosion protection groove of annular; when nozzle by local erosion during to the corrosion protection groove; the erosion effect of drilling fluid jet will be spread to both sides along the corrosion protection groove; thereby play the protection bit nozzle not by excessive erosion; the protection bit port, the protection drill body.
Preferably, the section shape of described corrosion protection groove is semicircle or rectangle.
This drilling well when satisfying the broken rock effect of drill bit, also possesses following functions with bit nozzle: 1) play the broken rock effect of auxiliary hydraulic jet by cluster fluidic; 2) by fan-shaped diffusion jet, play at the bottom of horizontal sliding landwaste, the compression well vortex, cleaning drill bit and reduce drilling cuttings and repeat fragmentation, can strengthen the cooling drill bit; 3) by utilizing the drilling fluid jet to the inevitable erosion effect of nozzle bosses, play the effect that self adaptation reduces the bit nozzle pressure drop, can increase the effect of drill bit one stroke; 4) by special corrosion protection groove design, avoid the local excessive erosion effect of bit nozzle, play protection bit nozzle integrality, the not washed out effect of protection drill body.This nozzle arrangements is simple, dependable performance, processing cost are lower.
Description of drawings
Fig. 1 is the cross-sectional view that bit nozzle is used in drilling well of the present utility model;
Fig. 2 is the plan structure schematic diagram that bit nozzle is used in drilling well of the present utility model;
Fig. 3 is the cross-sectional view that another embodiment of bit nozzle is used in drilling well of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the structure of drilling well of the present utility model with bit nozzle is elaborated.
As depicted in figs. 1 and 2, this drilling well comprises with bit nozzle: drill body and the entrance 1 that is respectively formed at the drill body two ends and outlet 2, form the runner 5 of hollow at the drill body middle part, in described runner 5, local inwardly by the two side walls of described drill body upper inside wall, extend upward and shrink gradually, form the lug boss 3 of two symmetries, the upper surface of two lug bosses 3 is concordant with the upper surface of drill body, form the gap between the inboard end points of two lug bosses, namely at a distance of certain distance, outlet 2 is divided into the figure of eight of intermediate connection by lug boss 3.
In addition, on the upper surface of drill body, around described outlet also be formed with the annular corrosion protection groove 4.The section shape of corrosion protection groove 4 is semicircle, also can Fig. 3 shown in, be rectangle.
During use, as required, can nozzle be installed on the PDC bit port by screw thread, perhaps be installed on the rock bit hydrophthalmia by jump ring.The whole runner of nozzle interior is streamlined, the fluids such as drilling fluid flow into through nozzle entrance, turn to through fairshaped nozzle bosses compression, form two strands of cluster fluidics at jet expansion, because the compression steering-effecting of nozzle bosses, very large fan-shaped spray district appears in the outside of cluster fluidic, has increased bottom-hole flow field cross flow energy, played clear well at the bottom of, the effect in cleaning drill bit, compression swirl district.For preventing that nozzle by the excessive erosion of high speed drilling fluid jet, is provided with the corrosion protection groove at jet expansion.When nozzle by local erosion during to the corrosion protection groove, the erosion effect of drilling fluid jet will be spread to both sides along the corrosion protection groove, thereby plays the protection bit nozzle not by excessive erosion, plays the effect of protection bit port, protection drill body.
This bit nozzle both can satisfy the needs of high-pressure jet drilling, also can realize the needs of hydraulic drilling under lower pump condition.The cluster fluidic design of this nozzle can form long and stable stream nuclear, brings into play to greatest extent the hydraulic drilling effect.The application life of this drill bit is longer, and the hydraulic drilling effect of top broken ground is fairly obvious, use this nozzle, can be when the top well obtains effective hydraulic drilling, rig speed-raising, utilize the drilling fluid high-speed jet to the slow erosion effect of nozzle bosses, realize the self adaptation expansion effect of jet size, realize the high-pressure jet drilling of continuation, avoid, overhigh pumping pressure oversize because of bit run, be forced to reduce discharge capacity, be forced to pull out of hole midway and change the unnecessary operation such as bit nozzle.
Because high speed drilling fluid jet has the erosion effect to nozzle, the later stage of high pump pressure environment, nozzle bosses is gradually by erosion, the jet size self adaptation enlarges, and has reduced bit pressuredrop, is conducive under the identical pump condition, the high-pressure jet drilling of well section on a large scale in the bit run, reach the organic unity of high efficiency drill and hydraulic drilling, reached and reduce the trip time, improved the purpose of drilling speed.
Claims (4)
1. drilling well bit nozzle, comprise drill body and the entrance (1) that is respectively formed at described drill body two ends and outlet (2), form the runner (5) of hollow at described drill body middle part, it is characterized in that: in described runner (5), two side walls by described drill body upper inside wall is inwardly local, extend upward and gradually contraction, form the lug boss (3) of two symmetries, the upper surface of described two lug bosses (3) is concordant with the upper surface of described drill body, form the gap between the inboard end points of two lug bosses, described outlet (2) is slit into the figure of eight of intermediate connection by described bossing.
2. drilling well bit nozzle according to claim 1 is characterized in that: the corrosion protection groove (4) that also is formed with annular on the upper surface of described drill body, around described outlet.
3. drilling well bit nozzle according to claim 2 is characterized in that: the section shape of described corrosion protection groove (4) is for semicircle.
4. drilling well bit nozzle according to claim 2, it is characterized in that: the section shape of described corrosion protection groove (4) is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642793 CN202913956U (en) | 2012-11-28 | 2012-11-28 | Bit nozzle for well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642793 CN202913956U (en) | 2012-11-28 | 2012-11-28 | Bit nozzle for well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202913956U true CN202913956U (en) | 2013-05-01 |
Family
ID=48162277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220642793 Expired - Fee Related CN202913956U (en) | 2012-11-28 | 2012-11-28 | Bit nozzle for well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202913956U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178869A (en) * | 2015-08-05 | 2015-12-23 | 中国石油集团渤海钻探工程有限公司 | Method for calculating size combination of nozzle of drill bit for petroleum drilling |
| CN114856453A (en) * | 2022-07-06 | 2022-08-05 | 胜利油田万和石油工程技术有限责任公司 | PDC drill bit with quick assembly disassembly formula nozzle |
-
2012
- 2012-11-28 CN CN 201220642793 patent/CN202913956U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178869A (en) * | 2015-08-05 | 2015-12-23 | 中国石油集团渤海钻探工程有限公司 | Method for calculating size combination of nozzle of drill bit for petroleum drilling |
| CN114856453A (en) * | 2022-07-06 | 2022-08-05 | 胜利油田万和石油工程技术有限责任公司 | PDC drill bit with quick assembly disassembly formula nozzle |
| CN114856453B (en) * | 2022-07-06 | 2022-09-09 | 胜利油田万和石油工程技术有限责任公司 | PDC drill bit with quick assembly disassembly formula nozzle |
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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: 20130501 Termination date: 20161128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |