CN202249789U - Ultrahigh pressure drill bit system for underground supercharger - Google Patents
Ultrahigh pressure drill bit system for underground supercharger Download PDFInfo
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- CN202249789U CN202249789U CN201120353036XU CN201120353036U CN202249789U CN 202249789 U CN202249789 U CN 202249789U CN 201120353036X U CN201120353036X U CN 201120353036XU CN 201120353036 U CN201120353036 U CN 201120353036U CN 202249789 U CN202249789 U CN 202249789U
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Abstract
The utility model relates to an ultrahigh pressure drill bit system for an underground supercharger. The technical scheme provided by the utility model is that: the system mainly comprises a drill bit body, an adapter, an ultrahigh pressure drilling fluid delivery passage and a normal drilling fluid delivery passage, wherein the normal drilling fluid delivery passage is a communicating flow passage which is formed by an overflow hole of a righting overflow structure, an annular space between an ultrahigh pressure thick hose protection cylinder and an adapter inner hole, an overflow hole of a split type righting device and an annular space between an ultrahigh pressure thick hose protection cylinder and a drill bit body inner cavity; and the ultrahigh pressure drilling fluid delivery passage is integrally connected with an ultrahigh pressure thick hose, an ultrahigh pressure thin hose and an ultrahigh pressure drilling fluid nozzle by a metal ultrahigh pressure drilling fluid flow passage. The system has the beneficial effects that: the structure guarantees that the aim of constructing an ultrahigh pressure drill bit from a normal drill bit by different factories can be fulfilled by only adjusting the lengths of the ultrahigh pressure thick hose and the ultrahigh pressure thin hose; the nozzle is formed by only slightly modifying a normal nozzle; a processing technology of the nozzle is easy to implement; and the construction cost of the drill bit can be effectively reduced.
Description
Technical field:
The utility model relates to a kind of oil and gas drilling engineering field, and particularly a kind of underground booster is used the super-pressure bit system.
Background technology:
Drilling engineering practice both at home and abroad shows, utilizes the downhole pressure increasing device to improve part drilling fluid expulsion pressure and comes auxiliary rock can increase substantially the bit speed of deep formation.But can the super-pressure drilling fluid of downhole pressure increasing device output is transferred to the shaft bottom respectively with the normal pressure drilling fluid and makes its each self-injection be one of key issue of this technology realization.
Super-pressure drilling fluid of in the prior art downhole pressure increasing device being exported and normal pressure drilling fluid are transferred to the shaft bottom respectively and the existing following patent documentation of instrument of its injection are disclosed.
Chinese patent manual CN2584797 (on November 05th, 2003 is open) provides a kind of super-pressure drill bit that has centralizer; It is between downhole pressure increasing pump discharge and bit nozzle, to be connected a super high pressure bend; Two centralizers up and down are housed on the super high pressure bend, between two centralizers spring are housed.Centralizer is installed up and down by clip spring seat, jump ring, pad and is constituted; Jump ring is the gap type ring spring; The first half of jump ring is that round table-like, the latter half is a cylinder; The centre is a through hole, has three radial slots at Rotary-table and cylindrical top, on the wall thickness between two seams, opens shaft orientation flowing channel; It is cylindric that clip spring seat is, and is big mouthful of downward inner conical between wherein, with screwed connection in inner walls.Be added with a protective sleeve at high-voltage tube revealed section and nozzle outside, protective sleeve is welded on the bit body.
Chinese patent manual CN2665342 (on December 22nd, 2004 is open) has described a kind of drill bit--dual channel drill bit that is used with the down-hole automatic pressure unit.By bit body, nozzle, super-pressure nozzle, super-pressure communicating pipe, mud runner, and compositions such as the gear wheel of fractured rock or composite sheet.It is characterized in that: super-pressure communicating pipe is arranged in the mud runner, super-pressure communicating pipe the lower end positioning sleeve is arranged.Positioning sleeve is fixed on the bit body, and positioning sleeve is fixed on super-pressure communicating pipe in the mud runner.Super-pressure communicating pipe connects the super-pressure nozzle.Effect is that the superelevation mud that the down-hole automatic pressure unit produces can form superhigh pressure jetting and flow broken bottom rock through arriving super-pressure nozzle and ejection super-pressure communicating pipe owing in the mud runner of drill bit, be provided with super-pressure communicating pipe.Super-pressure communicating pipe the outside be the mud runner, the mud that slush pump provides is accomplished bottom hole flushing through mud runner and nozzle and is returned with taking on the rock.
Chinese patent manual CN2683822 (on 03 09th, 2005 open) provides a kind of super-pressure dual channel PDC drill bit; This is to be the basis with ordinary steel body PDC drill bit; Under the situation of existing common flow passage and plain nozzle, at super high pressure bend of bit body set inside, the port of export of booster pump under the upper end connection well of super high pressure bend; The lower end is connected with the super-pressure bit nozzle through the super-pressure runner of in bit body, processing; The super-pressure drill bit is installed in the back of PDC cutting teeth on the wing of drill bit, carries out the superhigh pressure water jet cutting rock, and auxiliary cutting element breaks rock.Bit body top has erection device that super high pressure bend is fixed in the drill bit chamber.Erection device also has shaft orientation flowing channel except setting upright the super high pressure bend.Plain nozzle can change, and the super-pressure nozzle is contained in the overcoat the inside, and is also replaceable.
Chinese patent manual CN2931757 (on 08 08th, 2007 open) has described a kind of dual channel drill bit that drills for oil, and relates to the drill bit that drills for oil.Its objective is to the hydraulic drilling specific drilling tool provides matching used drill bit and disclose a kind of dual channel drill bit; The principal character of this scheme is also to be provided with second mud tube in the hydraulic fill pipeline; The bottom of second mud tube connects the bottom that places hydraulic fill pipeline, is provided with support between the top of second mud tube and the hydraulic fill pipeline tube wall; Hydraulic fill pipeline bottom centre is provided with counterbore, and the second mud tube bottom is press-fit in the counterbore, and the bottom of counterbore is shaped on nozzle; Support evenly is provided with along the spaced radial of hydraulic fill pipeline.Press the dual channel drill bit that this programme is implemented; Have characteristics rational in infrastructure, succinct, that connection is reliable and easy to process, with low cost; Be not merely Application and Development hydraulic drilling technology useful technical support is provided; And with this programme success be applied to the PDC matrix drill bits, for oil drilling production provides a kind of effective new drill rationally.
In principle; These drill bits can be realized the super-pressure drilling fluid of downhole pressure increasing device output and normal pressure drilling fluid are transferred to the shaft bottom respectively and make the purpose of its injection; But do not consider following problem in the design: (1) needs to produce target drill; Target drill need imbed the special-purpose runner of super-pressure drilling fluid in bit matrix, the cost that this has increased drillng operation undoubtedly, influenced the downhole pressure increasing device in different regions, the applying of Different Strata; (2) there are two possibilities that runner can not connect simultaneously in the installation process; Because super high pressure fluid overcurrent pipeline does not have pressure-bearing and bears device; With downhole pressure increasing device cargo handling process in, can produce because of axially loaded excessive or axis and misalign the super-pressure runner that causes and be communicated with failure scenarios; (3) connection procedure may damage super-pressure runner and being connected of bit body; In buckle process on the downhole pressure increasing device; Above-mentioned several kinds of drill bit super-pressure runners do not prevent rotating mechanism; Torsional interaction on the super-pressure runner in the connecting portion of bit body, very easily cause the damage at this position.
Therefore, need a kind of underground booster badly and use the super-pressure bit system, utilize the downhole pressure increasing device to improve the requirement that this technology popularization of deep formation rate of penetration is used to satisfy.
Summary of the invention:
The purpose of the utility model is exactly the above-mentioned defective that exists to prior art, provides a kind of underground booster to use the super-pressure bit system.
Its technical scheme is: be made up of bit body, crossover sub, super-pressure drilling fluid transmission channel and common drilling fluid transmission channel, described common drilling fluid transmission channel is made up of with the annular space between the bit body inner chamber with the thick flexible pipe protection of annular space, the flowing hole of opposite opened centralizer, the super-pressure tube between the crossover sub endoporus the flowing hole of setting upright flow structure, the thick flexible pipe protection of super-pressure tube and is communicated with runner; Described super-pressure drilling fluid transmission channel connects into an integral body by metal super-pressure drilling fluid runner and the thick flexible pipe of super-pressure, super-pressure small hose, super-pressure drilling fluid nozzle; The thick flexible pipe of described super-pressure, super-pressure small hose are threaded.
Above-mentioned super-pressure small hose is installed super-pressure drilling fluid nozzle; Described bit body is threaded with the box end of crossover sub; The endoporus of the pin end of crossover sub is installed and was set upright flow structure; Cooperate with aperture stop nut, the anti-pull-up structure of metal super-pressure drilling fluid runner; Set upright flow structure six side's endoporus hexahedron of packing into, had the gap between hexahedron and the metal super-pressure drilling fluid runner six side's endoporus.
Above-mentioned aperture stop nut is installed on the described metal super-pressure drilling fluid runner, its soffit with set upright the flow structure upper surface and contacted.
The anti-pull-up structure upper surface of metal super-pressure drilling fluid runner with set upright the flow structure soffit and contacted.
The opposite opened centralizer is equipped with in above-mentioned crossover sub and bit body junction.
Metal super-pressure drilling fluid runner is equipped with super-pressure drilling fluid runner seal assembly, in order to realize the sealing at super-pressure drilling liquid flow pipeline joint place.
Above-mentioned bit body can be dissimilar rock bit or PDC drill bit.
The beneficial effect that the utility model compared with prior art has is:
1, applied widely; Its bit body is common any drill bit; Only need other assemblies except bit body in the system be constructed according to the building method of this system, can realize of the conversion of common drill bit, help applying of downhole pressure increasing device to super-pressure dual channel drill bit;
2, this structure only need be adjusted the purpose that the thick flexible pipe of super-pressure, super-pressure small hose length can be realized the common drill configurations super-pressure of different manufacturers drill bit.Super-pressure drilling fluid nozzle only is the transformation of do slightly of plain nozzle, and this nozzle processing technology realizes easily, can effectively reduce the drill configurations cost;
3, simple in structure, stable performance, use can not bring otherwise risk for drillng operation.
Description of drawings:
Accompanying drawing 1 is the sectional view of the utility model;
Accompanying drawing 2 is A-A sectional views of the utility model;
Accompanying drawing 3 is B-B sectional views of the utility model;
Among the last figure: super-pressure drilling fluid runner seal assembly 1, aperture stop nut 2, spacing back-up ring 3, hexahedron 4, metal super-pressure drilling fluid runner 5, set upright the thick flexible pipe of the thick flexible pipe protection of flow structure 6, crossover sub 7, opposite opened centralizer 8, super-pressure tube 9, bit body 10, super-pressure 11, super-pressure small hose 12, super-pressure drilling fluid nozzle 13.
The specific embodiment:
In conjunction with accompanying drawing 1-3, the utility model is done further to describe:
The utility model is by being made up of bit body 10, crossover sub 7, super-pressure drilling fluid transmission channel and common drilling fluid transmission channel, and described common drilling fluid transmission channel is made up of with the annular space between bit body 10 inner chambers with the thick flexible pipe protection of annular space, the flowing hole of opposite opened centralizer 8, the super-pressure tube 9 between crossover sub 7 endoporus the flowing hole of setting upright flow structure 6, the thick flexible pipe protection of super-pressure tube 9 and is communicated with runner; Described super-pressure drilling fluid transmission channel connects into an integral body by the thick flexible pipe of metal super-pressure drilling fluid runner 5 and super-pressure 11, super-pressure small hose 12, super-pressure drilling fluid nozzle 13; The thick flexible pipe of described super-pressure 11, super-pressure small hose 12 are threaded, and are used for the length of Adjustment System pipeline; The thick flexible pipe 11 outer thick flexible pipe protection of the super-pressure tubes 9 that are provided with of super-pressure, the thick flexible pipe protection of super-pressure tube 9 is used to protect the thick flexible pipe 11 of super-pressure not by erosion, and sets upright a whole set of pipe-line system; The thick flexible pipe 11 of super-pressure is a super-pressure drilling fluid runner, and internal diameter is bigger, and the mobile frictional resistance of super-pressure drilling fluid is less.Super-pressure small hose 12 internal diameters and external diameter are all less, flexible in bit body 10 inner flow passages, have prevented that bit body 10 inner flow passages are crooked and problem that super-pressure drill bit that cause can't be constructed.
Wherein, super-pressure drilling fluid nozzle 13 is installed in the lower end of super-pressure small hose 12; Described bit body 10 is threaded with the box end of crossover sub 7; The endoporus of the pin end of crossover sub 7 is installed and was set upright flow structure 6; Cooperate with aperture stop nut 2, metal super-pressure drilling fluid runner 5 anti-pull-up structure; Seal assembly produces metal super-pressure drilling fluid runner 5 when being used to bear downhole pressure increasing device and the dismounting of this system axial tension and pressure; Set upright flow structure 6 six side's endoporus hexahedron 4 of packing into, had the gap between hexahedron 4 and the metal super-pressure drilling fluid runner 5 six side's endoporus.
In addition; Aperture stop nut 2 is installed on the described metal super-pressure drilling fluid runner 5; Its soffit contacted with setting upright flow structure 6 upper surfaces, the axial compression that seal assembly produces metal super-pressure drilling fluid runner 5 when being used to bear the downhole pressure increasing device and being connected with this system.The anti-pull-up structure upper surfaces of metal super-pressure drilling fluid runner 5 contacted with setting upright flow structure 6 soffits, and seal assembly is to the axial tension of metal super-pressure drilling fluid runner 5 generations when being used to bear downhole pressure increasing device and this system and taking apart; Set upright flow structure 6 tops spacing back-up ring 3 was installed, and be used for fixing and set upright flow structure 6, and made it bear torsional interaction and do not produce rotation; Crossover sub 7 is equipped with opposite opened centralizer 8 with bit body 10 junctions; Be used to realize the overcurrent that reaches the normal pressure drilling fluid placed in the middle of metal super-pressure drilling fluid runner 5; Metal super-pressure drilling fluid runner 5 is equipped with super-pressure drilling fluid runner seal assembly 1, in order to realize the sealing at super-pressure drilling liquid flow pipeline joint place.
The thick flexible pipe of super-pressure 11, super-pressure small hose 12 are used the length that can conveniently adjust the whole system pipeline, can construct inner flow passage and have crooked super-pressure drill bit.The thick flexible pipe protection of super-pressure tube 9 can play the thick flexible pipe 11 of protection super-pressure not by erosion, and sets upright the double action of a whole set of pipe-line system.Super-pressure small hose 12 is realized being tightly connected with super-pressure drilling fluid nozzle 13 easily, can effectively solve the problem that can't use labyrinth to realize superhigh pressure sealing in the less space.This structure only need be adjusted the purpose that the thick flexible pipe of super-pressure 11, super-pressure small hose 12 length can be realized dissimilar common drill configurations super-pressure drill bits.Super-pressure drilling fluid nozzle 13 only is the transformation of do slightly of plain nozzle, and this nozzle processing technology realizes easily, can effectively reduce the drill configurations cost.
Claims (7)
1. a underground booster is used the super-pressure bit system; It is characterized in that: mainly be made up of bit body (10), crossover sub (7), super-pressure drilling fluid transmission channel and common drilling fluid transmission channel, described common drilling fluid transmission channel is made up of with the annular space between bit body (10) inner chamber the thick flexible pipe protection of flowing hole, super-pressure tin (9) of the annular space between the thick flexible pipe protection tube of the flowing hole of setting upright flow structure (6), super-pressure (9) and crossover sub (7) endoporus, opposite opened centralizer (8) and is communicated with runner; Described super-pressure drilling fluid transmission channel connects into an integral body by metal super-pressure drilling fluid runner (5) and the thick flexible pipe of super-pressure (11), super-pressure small hose (12), super-pressure drilling fluid nozzle (13); The thick flexible pipe of described super-pressure (11), super-pressure small hose (12) are threaded.
2. underground booster according to claim 1 is used the super-pressure bit system, it is characterized in that: described super-pressure small hose (12) is installed super-pressure drilling fluid nozzle (13); Described bit body (10) is threaded with the box end of crossover sub (7); The endoporus of the pin end of crossover sub (7) is installed and was set upright flow structure (6); Cooperate with aperture stop nut (2), the anti-pull-up structure of metal super-pressure drilling fluid runner (5); Set upright flow structure (6) six side's endoporus hexahedron (4) of packing into, had the gap between hexahedron (4) and metal super-pressure drilling fluid runner (5) the six side's endoporus.
3. underground booster according to claim 2 is used the super-pressure bit system; It is characterized in that: described aperture stop nut (2) is installed on the described metal super-pressure drilling fluid runner (5), its soffit with set upright flow structure (6) upper surface and contacted.
4. underground booster according to claim 2 is used the super-pressure bit system, it is characterized in that: the anti-pull-up structure upper surface of metal super-pressure drilling fluid runner (5) with set upright flow structure (6) soffit and contacted.
5. underground booster according to claim 1 and 2 is used the super-pressure bit system, it is characterized in that: described crossover sub (7) is equipped with opposite opened centralizer (8) with bit body (10) junction.
6. underground booster according to claim 1 and 2 is used the super-pressure bit system, it is characterized in that: metal super-pressure drilling fluid runner (5) is equipped with super-pressure drilling fluid runner seal assembly (1).
7. underground booster according to claim 1 and 2 is used the super-pressure bit system, it is characterized in that: described bit body (10) can be rock bit or PDC drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120353036XU CN202249789U (en) | 2011-09-20 | 2011-09-20 | Ultrahigh pressure drill bit system for underground supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120353036XU CN202249789U (en) | 2011-09-20 | 2011-09-20 | Ultrahigh pressure drill bit system for underground supercharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202249789U true CN202249789U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120353036XU Expired - Fee Related CN202249789U (en) | 2011-09-20 | 2011-09-20 | Ultrahigh pressure drill bit system for underground supercharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202249789U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704857A (en) * | 2012-06-21 | 2012-10-03 | 中国石油大学(华东) | Underground supercharging and accelerating system |
| CN104141457A (en) * | 2013-05-07 | 2014-11-12 | 中国石油大学(华东) | Well drilling pressurizing speed-up device |
-
2011
- 2011-09-20 CN CN201120353036XU patent/CN202249789U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704857A (en) * | 2012-06-21 | 2012-10-03 | 中国石油大学(华东) | Underground supercharging and accelerating system |
| CN102704857B (en) * | 2012-06-21 | 2014-06-11 | 中国石油大学(华东) | Underground supercharging and accelerating system |
| CN104141457A (en) * | 2013-05-07 | 2014-11-12 | 中国石油大学(华东) | Well drilling pressurizing speed-up device |
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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: 20120530 Termination date: 20150920 |
|
| EXPY | Termination of patent right or utility model |