CN1091176A - The flow control type vibration-jet device that is used for drill bit - Google Patents
The flow control type vibration-jet device that is used for drill bit Download PDFInfo
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- CN1091176A CN1091176A CN 93101428 CN93101428A CN1091176A CN 1091176 A CN1091176 A CN 1091176A CN 93101428 CN93101428 CN 93101428 CN 93101428 A CN93101428 A CN 93101428A CN 1091176 A CN1091176 A CN 1091176A
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Abstract
The present invention relates to a kind of fluid automatically controlled vibration and produce water attack to improve the oil drilling spraying tool of jet impulse rock breaking capacity, it utilizes attached wall of jet and negative-feedback switching principle to form bistable oscillation and is alternately penetrated by low-resistance runner nozzle and high resistant runner nozzle, and the water attack high voltage transient that low-resistance produces when high resistant switches can strengthen the impact force of jet to rock.The present invention can increase the useful effect pressure of bit nozzle exponentially under existing pump press strip spare.Because need not moving part goes to produce water attack, damage the loss that delays work so can reduce parts, improve bit speed.
The present invention can be applicable to oil mine and geological drilling.
Description
The present invention ejects spatially drill bit to interlock, and the fluid automatically controlled oscillation device of Jian Xie stream thigh in order to strengthen the broken rock effect of jet impulse, belongs to oil drilling facility class in time.
Since this century the seventies, countries in the world scientific and technological circle have generally acknowledged that drill footage not only depends on the Mechanical Crushing effect of bit cone to rock, but also will lean on the high speed mud of nozzle ejection to go to wash down to hold away the shaft bottom landwaste under the arm and erosion splitting rock goes to bring into play the hydraulic drilling effect.Yet, the continuous injection mode that mostly is that field drilling adopts at present, its shortcoming is:
(1) finite energy that slush pump is provided is shared out equally in whole drilling process, and the water horse power (power) that acts in the unit interval on the rock stratum, shaft bottom is too low, is not enough to splitting and peels off rock.
The chip hold down of its constant stagnation pressure was unfavorable for the rock starting and breaks away from basic unit's rock mass when (2) the positive top of a fluid stream swept away portion's rock continuously.
In recent years, the lot of domestic and foreign scholar is devoted to formulate the novel injection device to replace solid jet.The king " is used for the cavitation jet nozzle (China Patent No. 90212418) on the drill bit with suitable." pulsed jet regulation device for high pressure spray nozzle " of Wang Shilie (China Patent No. 85100562), " hydraulic drilling jar " of Anna's rig international corporation (China Patent No. 91102908), " rock bit oscillation pulsed water jet nozzle " (China Patent No. 89201391) of Southwest Petroleum Institute, and hammering drill bit (the ACC patent No. 91007274/09101 of Li Site, priority date 89069AU004631), " drilling mud pulser " (ACC patent No. 91021303/09103 of (" Improved Rock DrillingBit for Percussion Hammer " ACC-NO:91007274/09101.Priority:890609AU 004631 of Lister) and Ward, the priority date: 890314US323624) (the Downhole Drilling Flow Pulsing Appts.-Incorporates a movable valve member for poducing an enhanced water hammer effect. of Walter " ACC-No:9102303/09103, priority:890314 US 323624) be its representative.But deep-well confined pressure height be difficult for to form the negative pressure of generating gasification, is the range of application that class of 90212418 is come the bit nozzle of fractured rock by the hole of gasifying thereby limited the patent No..And as the patent No. be 89201391 by the limit wall convex-concave that flows to make the so-called oscillation pulsed water jet nozzle of lift-off collar vortex, the amplitude of its pressure fluctuation meter only accounts for the very little part of jet stagnation pressure amplitude, waits further raising so its rock breaking efficiency still has." drilling mud pulser " (ACC patent No. 91021303) of " pulsed jet regulation device for high pressure spray nozzle " of Wang Shilie (patent No. 85100562) and Ward, all thereby attempt generation water hammer can greatly improve rock breaking capacity, but depend on mechanical part and periodically block the mud injection, and these mechanical parts (as the spring in the device of Ward) fracture very easy to wear, lower the efficient of this class device, still can not adapt to the production needs of oil drilling.
The purpose of this invention is to provide a kind of rapid wear mechanical organ such as spring that do not rely on, but can periodically produce water hammer, form instantaneous pressure far above the stagnation pressure of solid jet so that the fluid automatically controlled vibration-jet device of efficient rock-breaking at the drill bit place.
The fluid automatic control technology (or claiming fluidics) that the present invention utilizes hydrodynamics and cybernetics hybridization to produce, form multistage bistable fluidic clapp oscillator with multistage stock inlet and control mouth and backfeed loop, make jet alternately by the ejection of left and right sides delivery outlet, remove to promote the drill bit power stream and alternately spray by the auxiliary jet of bit central nozzle or drill margin.The present invention utilizes the eddy flow drag device to make the impedance of jet stream runner when auxiliary jet far above the central nozzle person again, thereby generation water hammer, very high instantaneous pressure appears in the drill collar cavity, ordering about mud is penetrated by the thin nozzle in jet pipe lower end with very high-speed, its to the instantaneous impact of rock far above solid jet, for example, corresponding to well depth 1500m, 1200 kilograms every cubic metre of mud densities, the situation of bit diameter 216mm, the water attack instantaneous impact can be than the impact force of solid jet about big twice.
Jet pipe intermittently sprays the pulsed flow of liquid that modulation reaches 100% high-low pressure alternation, will cause the tension strain impulse wave of horizontal direction in the rock stratum, shaft bottom, quickens opening of rock stratum and splits with broken.The low-speed jet that flows out in the auxiliary jet forms coaxial ring set compound jet with the high-speed jet that jet pipe penetrates, the kernel high-speed jet is advanced with the outer shroud low-speed jet is parallel, both interfaces are velocity discontinuities, by modern fluid mechanics research newest fruits as can be known, this discontinuity surface place will produce vortex row by shearing instability and self-oscillation, thereby when the jet impulse rock face, produce Pulse Pressure with High Frequency, further aggravate opening of rock and split with broken.
In oscillating jet one-period of the present invention, the preceding half cycle period is a low resistance state, and its jet causes the pressure spikes district by the center, main burner directive drilling well shaft bottom that is positioned at bit central at center, shaft bottom scar; The second half period is a high-impedance state, jet is by drill margin directive shaft bottom corner, form the pressure spikes district at the edge, and jet flows to the edge by the center, this will cause by the extrorse barometric gradient in center, help rubble laterally passing and landwaste starting, thereby quicken to remove the shaft bottom landwaste, improve bit speed.
Concrete enforcement of the present invention can be illustrated by accompanying drawing, and the fluid automatically controlled oscillator water inlet among the present invention can be one or more, determines according to actual needs and adjustment.Be taken as 4 among the figure,, have in the accompanying drawing 1.2 and 3: one-level stock inlet 1 for example, one-level trunnion 5, secondary stock inlet 2, secondary trunnion 6,3, three grades of trunnions 7 of three grades of stock inlets, the power stream stock inlet is a level Four stock inlet 4, power stream trunnion 8, left side vibration delivery outlet 9, right vibration delivery outlet 10, high resistant delivery channel 11, low-resistance delivery channel or be center power stream nozzle 12, a left side are adopted and are pressed hole 13, left side control mouthfuls 14, the right side is adopted and is pressed hole 15, right control mouth 16, metal bellows feedback channel 17, cyclone pipe 18, high resistant goes out the linkage section 19 of runner 11 and cyclone pipe 18, the drain hole 20 of cyclone pipe, auxiliary jet 21, jet pipe import 22, the thin nozzle 23 of jet pipe, wherein auxiliary jet 21, are surrounded on the jet pipe periphery, and coaxial with jet pipe.Jet pipe length is determined according to pump pressure and lithology optimization, is a kind of example in the accompanying drawing.Center power stream nozzle 12, auxiliary jet 21, jet pipe import 22 and outlet 23, and all the inwall of runner all uses the tungsten plating to improve abrasion resistance.
Also draw drill collar 24 and drill bit 25 in the accompanying drawing, as is generally known at present, the gear wheel of cutting fractured rock all is equipped with in the drill bit bottom of adopting in the production, is limited to map sheet, is not shown in the accompanying drawing.
In the deep drilling exploration manufacturing process, the working condition of this device can be described below: high-pressure slurry will enter the stock inlet 1 that is installed in the controlled oscillator in the chamber by the drill collar inner chamber, by the liquid stream of the high speed turbulent fluctuation of trunnion 5 ejaculations of 1 bottom will because of the effect of entrainmenting to more attaching near the left side wall of central axis than the right side, thereby promoting to flow to the liquid stream that comes by stock inlet 2 penetrates together to the right, 1 and 2 liquid stream again will with the formed impulse force of its momentum flux promote stock inlet 3 flow to the liquid stream that comes and 1 with 2 liquid stream by 9 ejaculations of left side vibration delivery outlet, further promote to flow to the mud that comes and spray, remove bottom-hole cleaning landwaste and cooling gear wheel from center power stream nozzle 12 by stock inlet 4 with 1.2 and 3 momentum fluxes that combine.Meanwhile adopt and press mouthfuls 13 meet the stream hook and then can be converted into pressure energy to the kinetic energy of the sub-fraction of 1.2 and 3. 3 whole liquid streams of stock inlet, pass control mouth 14 left by the anti-passage 17 of bursting, and then from the jet of left side compressing stock inlet 1 following trunnion 5 ejections, make it moving by runner right side wall surface current, and flow in the liquid flow direction left side that the nozzle 6 that further promotes stock inlet 2 penetrates, the jet that the liquid stream of 1 and 2 stock inlets can promote the trunnion 6 of stock inlet 3 bottoms again flows to the right and is flowed out by right side vibration delivery outlet 10, the jet directive high resistant runner exit that forces stock inlet 4 following trunnions 8 to penetrate has at last realized that power stream is by the switching of central nozzle to auxiliary jet.Because action of centrifugal force in the eddy flow runner 18, by 11 through 18 to auxiliary jet 21 flow resistance increase when flowing out many by central nozzle 12, so spray volume reduces sharply, cause the flowing velocity of mud in drill collar and the drilling rod inner chamber all to fall sharply, if the increment of flow velocity is-△ U, according to momentum law, the drill collar bottom will obtain water attack supercharging △ P
△P＝ρC△U+△P
f
ρ is a mud density herein, and C is an acoustic wave propagation velocity in the incompressible fluid in the steel pipe, and △ U is the absolute value of mud flow velocity variations amplitude in the drilling rod inner chamber.
△ P
fBe to fall sharply because of flow velocity on the way, abrasion reduces and the frictional resistance supercharging that obtains in the drill collar bottom.
Under this water attack high voltage transient effect, thin nozzle 23 will spray transient state high-speed pulse jet and remove to impact rock.
Yet, when the slurry flows of 1.2 and 3 stock inlets flows through by 10, adopt and press mouth 15 to be converted to pressure energy to the part of liquid flowing energy.Direction by control mouthfuls 16 removes to change the jet of trunnion 5 makes it to attach to once again the left side wall, promptly restores.
Then, go round and begin again, by central nozzle 12 or auxiliary jet 21 ejections, 23 at the thin nozzle of jet pipe will intermittently spray transient state high-speed jet pulse to power stream with one after the other ground.
The present invention has the following advantages: 1. under existing pump press strip spare, can improve exponentially the broken rock water horse power (power) that acts on the shaft bottom, 2. the stretch-draw strain-pulse ripple of alternation is brought out in the high pressure transient jet pulse meeting of being launched in rock mass, cause occurring in the rock crackle and crack, this high-voltage pulse then can make it accelerate open to the microfissure that has occurred to split and fragmentation.
3. the major-minor nozzle is not to spray simultaneously, but slurry flows is sprayed in one after the other, and formed bottom-hole flow field with big barometric gradient is conducive to broken sillar and transports from laterally peeling off and being held under the arm by the mud punching.
4. the coaxial differential ring set jet that penetrates of auxiliary jet and high-pressure nozzle can form collar vortex in the shearing aspect of the low-speed jet of internal layer high-speed jet and outer shroud, aggravates jet to hammering and the fragmentation of rock.
5. the switching of jet direction, the blocking-up of flowing is all finished by fluid oneself, does not rely on rotation and the slip of mechanical part, and bump so there is not abrasion to damage problem, has reduced the neutral gear that stops rig repair, has improved production efficiency.
The present invention is based on solid physical theory basis and (translates referring to Fluid Transmission and Control teaching and research group of Tsing-Hua University, the bosom is sharp outstanding with Smith Streeter, transient flow, hydraulic and electric engineering publishing house nineteen eighty-three) and experimental verification qualitatively (referring to annex, doctor J.R.Tippets that Britain establishes Fei De university is published in the paper on the 45th page of " jet quarterly " Fluidics Quaterly the 6th the 2nd phase of volume, 1974, The Fluidic Hydraulic Ram and Conjectured Pressure Amplifier, relevant experimental result and argumentation).
And China is domestic the close production practices comparable data (China University Of Petroleum Beijing that " high-pressure water jet " periodical first phase in 1992 of publishing referring to Jiangsu Inst. of Coal Mine delivers, the paper of Shen Zhonghou, water-jet technology are used in petroleum works and are looked forward to).So the present invention has real feasibility, can be applicable to oil drilling production to improve rate of penetration.
Description of drawings:
Fig. 1: be multistage bistable fluidic oscillator flow passage configuration figure.
Fig. 2: be multistage bistable fluidic oscillator, feedback channel and cyclone pipe top view in the drill collar cavity arrangements.
Fig. 3: be the constructional drawing of cyclone pipe, linkage section and drain hole.
Fig. 4: be multistage bistable fluidic oscillator, cyclone cross-sectional side and auxiliary jet and high-pressure nozzle coaxial layer cover constructional drawing.
1-level stock inlet
2.-secondary stock inlet
3.-three grades of stock inlets
4.-power stream stock inlet (level Four stock inlet)
5.-level trunnion
6.-secondary trunnion
7.-three grades of trunnions
8.-power stream trunnion (level Four trunnion)
9.-left side vibration delivery outlet
10.-right vibration delivery outlet
11.-high resistant delivery channel
12.-low-resistance delivery channel (main burner)
13.-adopting, a left side presses the hole
14.-left side control mouth
15.-adopting, the right side presses the hole
16.-right control mouth
17.-metal bellows feedback channel (about each, measure-alike)
18.-cyclone pipe
19.-linkage section (connects high resistant runner 11 and cyclone pipe 18
20.-the drain hole of cyclone pipe
21.-auxiliary jet
22.-jet pipe import
23.-the thin nozzle of nozzle exit
24.-drill collar
25.-drill bit
Claims (3)
1, a kind of Flow Control vibration-jet device, multistage bistable fluidic oscillator is arranged, the eddy flow drag device, the power stream nozzle, secondary jet nozzle and high-pressure nozzle, it is characterized in that fluidic oscillator has a plurality of stock inlets, as (1) among Fig. 1, (2), (3) and stock inlets such as (4), with a plurality of trunnions, as (5) among Fig. 1, (6), (7) and trunnions such as (8), there are two feedback channels (17) will adopt the pressure of pressing hole (13) or (15) again and feed back to left side control mouthful (14) or right control mouthful (16) respectively, realize that degree of depth negative-feedback guarantees stable vibration, jet one after the other ground is penetrated through low-resistance delivery channel main burner (12) by left side vibration delivery outlet (9), or by right side vibration delivery outlet (10) through high resistant delivery channel (11), linkage section (19), cyclone pipe (18) cyclone pipe drain hole (20) and auxiliary jet (21) penetrate.
2, Flow Control vibration-jet device as claimed in claim 1, the high-velocity flow that it is characterized in that runner (11) is done the contra solem eddy flow by linkage section (19) guiding cyclone pipe (18), the bend outside is because of the centrifugal force supercharging, cause spiral flow, drain hole (20) then is positioned at inboard depressor area, and cyclone pipe (18) is fixing to guarantee top elbows and bottom bend pipe Free Transform in the stage casing.
3, as claim 1 and 2 described Flow Control vibration-jet devices, it is characterized in that high-pressure nozzle is coaxial with auxiliary jet (21), the latter's runner from the periphery around the former, and the thin nozzle (23) of jet pipe be diameter is the garden post nozzle of d, auxiliary jet (21) outlet section then for (23) coaxial diameter be the garden post nozzle of 5d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93101428 CN1034598C (en) | 1993-02-17 | 1993-02-17 | Flow control type vibration-jet device for drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93101428 CN1034598C (en) | 1993-02-17 | 1993-02-17 | Flow control type vibration-jet device for drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1091176A true CN1091176A (en) | 1994-08-24 |
| CN1034598C CN1034598C (en) | 1997-04-16 |
Family
ID=4983588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93101428 Expired - Fee Related CN1034598C (en) | 1993-02-17 | 1993-02-17 | Flow control type vibration-jet device for drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1034598C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427214C (en) * | 2005-11-30 | 2008-10-22 | 孙厚钧 | Jet-flow oscillator |
| CN106337654A (en) * | 2016-11-22 | 2017-01-18 | 西南石油大学 | Drilling device and method utilizing supercritical carbon dioxide |
| CN115788307A (en) * | 2023-02-13 | 2023-03-14 | 中国石油大学(华东) | Drilling tool with coupled two-stage drill bit and vibration impact and high-pressure pulse jet |
-
1993
- 1993-02-17 CN CN 93101428 patent/CN1034598C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427214C (en) * | 2005-11-30 | 2008-10-22 | 孙厚钧 | Jet-flow oscillator |
| CN106337654A (en) * | 2016-11-22 | 2017-01-18 | 西南石油大学 | Drilling device and method utilizing supercritical carbon dioxide |
| CN106337654B (en) * | 2016-11-22 | 2018-06-19 | 西南石油大学 | A kind of drilling rig and method using supercritical carbon dioxide |
| CN115788307A (en) * | 2023-02-13 | 2023-03-14 | 中国石油大学(华东) | Drilling tool with coupled two-stage drill bit and vibration impact and high-pressure pulse jet |
| CN115788307B (en) * | 2023-02-13 | 2023-06-13 | 中国石油大学(华东) | Drilling tool with double-stage drill bit coupled with vibration impact and high-pressure pulse jet flow |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1034598C (en) | 1997-04-16 |
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Address after: 200000 room 6, Lane 77, Lane 202, Furong Road, Shanghai Applicant after: Sun Yanqing Applicant after: Gao Peilin Address before: Room 183, No. five, 101 village, Tianshan, Shanghai Applicant before: Sun Yanqing Applicant before: Gao Peilin |
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