CN202417368U - Oscillatory spray type reverse-circulating coring device - Google Patents
Oscillatory spray type reverse-circulating coring device Download PDFInfo
- Publication number
- CN202417368U CN202417368U CN2011205329977U CN201120532997U CN202417368U CN 202417368 U CN202417368 U CN 202417368U CN 2011205329977 U CN2011205329977 U CN 2011205329977U CN 201120532997 U CN201120532997 U CN 201120532997U CN 202417368 U CN202417368 U CN 202417368U
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- spray
- nozzle
- coring
- water
- tubular shell
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Abstract
The utility model belongs to an improvement on a coring frilling tool in geological drilling, and particularly relates to an oscillatory spray type reverse-circulating coring device. The oscillatory spray type reverse-circulating coring device comprises a nozzle, a spray bearer and a water-diversion joint, wherein the nozzle and a self-excited oscillating cavity (provided with an upper nozzle and a lower nozzle) are arranged in a tubular shell through threads, the rear end of the spray bearer is connected to the water-diversion joint through a thread, the water-diversion joint is arranged at the rear end of the tubular shell through a thread, the outside diameter of the spray bearer in the tubular shell is smaller than the inside diameter of the tubular shell, a water sucking hole of the water-diversion joint is communicated with a reverse spray channel formed by the inner wall of the shell and the outer wall of the spray bearer, a gap is left between the front end face of the spray bearer and the outer end face of the lower nozzle of the self-excited oscillating cavity, the outlet of the spray bearer is communicated with a water drain hole of the water-diversion joint, and the other end of the water-diversion joint is connected with a valve seat through a thread. The coring device disclosed by the utility model is reasonable in structure, and can be used for solving the problem that disintegrated cores bridge and block coring tubes and a good deal of rock powder silts up coring tubes, thereby increasing the coring rate of broken stratums.
Description
Technical field
The utility model belongs to the improvement of the core drill structure in the geological drilling, the anti-coring apparatus that circulates of particularly oscillatory spray formula.
Background technology
At present, core drill mainly contains common core drill (being divided into single tube core drill, two-tube core drill) and injecting type is counter circulates (it is anti-to be called for short spray) core drill.
Spraying anti-core drill is the local anti-cyclic suction effect that utilizes flushing liquor, makes flushing liquor direction with rock core entering basket in the pipe of coring consistent, helps obtaining of broken rock core.The critical piece that sprays anti-core drill is the spray deinstall, and its structure can be divided into service depot, suction hole, drain hole three parts basically.The service depot comprises nozzle and holds spray apparatus that suction hole and drain hole design are on return connector.
The flushing liquor sent here by slush pump in the drilling tool gets into nozzle, because nozzle chamber is taper, and the nozzle section is less, and the flow velocity of the flushing liquor that therefore comes out from nozzle increases and injects and hold spray apparatus.Because flow velocity increases, pressure potential must drop to will be very little, at this moment just can around holding spray apparatus, form low-pressure area.Because the generation of low-pressure area, under action of pressure, flushing liquor is sucked in the basket at the bottom of the hole, local anti-circulation at the bottom of the formation hole.
Spraying anti-core drill mainly contains single tube and sprays anti-core drill, the anti-core drill of two-tube two moving sprays, two-tube single action and spray anti-core drill etc.
Practicality shows, sprays the anti-core drill effect of in zone of fracture, taking a sample and obviously is superior to common core drill.Yet, the phenomenon of spray that anti-core drill exists still in the zone of fracture core-drilling that the particle rock core is built bridge, card stifled core pipe and a large amount of rock dust what plug being cored pipe, it has a strong impact on sample quality and the raising of the rate of coring.
Summary of the invention
The purpose of the utility model is to provide a kind of oscillatory spray formula the anti-coring apparatus that circulates, and it is rational in infrastructure, and the problem of can solve that broken rock core is built bridge, card stifled core pipe and a large amount of rock dust silting the pipe of coring up improves the rate of coring of broken formation.
The purpose of the utility model is achieved in that the anti-coring apparatus that circulates of a kind of oscillatory spray formula; Comprise nozzle; Hold spray apparatus and return connector, in tubular shell, through screw thread nozzle and the self-excited oscillation cavity with top nozzle and following nozzle are installed, the rear end of holding spray apparatus is through being threaded on the return connector; Return connector is installed in the rear end of tubular shell through screw thread; Be positioned at tubular shell to hold its external diameter of spray apparatus littler than the internal diameter of tubular shell, the suction hole of return connector and inner walls with hold the anti-channel connection of spray that the spray apparatus outer wall constitutes, hold between the outer face of nozzle under front end face and the self-excited oscillation cavity of spray apparatus and leave the gap; The outlet of holding spray apparatus is communicated with the drain hole of return connector, and the other end of return connector is through the valve seat that is being threaded.
This vibration injecting type is counter to circulate coring apparatus mainly by Hull nurse the self-excited oscillation cavity type injecting type reverse circulation sub (cavity that is about to spray in the contra adapter is designed to Hull nurse chamber now) and the facility formation of coring now.
The nurse chamber self-oscillation principle of vibrating now in Hull is: high pressure liquid stream gets into the vibration chamber that volume increases suddenly through top nozzle; Effect with surrounding fluid in the vibration chamber makes pressure fluctuation strengthen; Be equivalent to the effect generation acoustic radiation of piston at the fluid pulse of following nozzle exit; The acoustic pressure propagate, new disturbance generation is brought out in shear layer separation place at the upper reaches, under instable frequency-selecting of shear layer and amplification; Cavity pressure is further increased; And make that random eddy current becomes the orderly eddy current in the strength set in the former shear layer, thus the amplitude of pressure fluctuation is improved greatly, just produce fluid self-excited vibration in the vibration chamber and form oscillating jet at jet expansion down.Oscillating jet gets into return connector can produce the vibration suction effect.
Vibrate the now spray contra adapter of the anti-coring apparatus that circulates of chamber injecting type of this Hull nurse utilizes Hull nurse chamber self-oscillation now principle; Inner no mechanical motor element sprays the contra adapter internal cavity and is designed to the Hull nurse chamber that vibrates now, includes nozzle, holds spray apparatus, return connector, shell etc.; Holding spray apparatus is arranged on the return connector; Nozzle, return connector respectively with shell through being threaded, the return connector other end is connected with the facility of coring, current are injected by nozzle and are held spray apparatus; The effect in chamber because the Hull nurse vibrates now; Penetrate with oscillation form from the return connector outer tunnel, current are aspirated with oscillation form and are got into the pipe of coring by in the return connector internal channel entering spray contra adapter simultaneously, accomplish the anti-coring operation that circulates of oscillatory spray formula.
The utility model is rational in infrastructure, and the problem of solved that broken rock core is built bridge, card stifled core pipe and a large amount of rock dust silting the pipe of coring up has improved the rate of coring of broken formation.
Description of drawings
To combine accompanying drawing that the utility model is done further to describe below, accompanying drawing 1 is the sectional structure sketch map of the utility model.
The specific embodiment
The anti-coring apparatus that circulates of a kind of oscillatory spray formula; Shown in accompanying drawing 1, comprise nozzle 2, hold spray apparatus 4 and return connector 5; In tubular shell 1, nozzle 2 and the self-excited oscillation cavity 3 with top nozzle 7 and following nozzle 8 are installed through screw thread; The rear end of holding spray apparatus 4 is through being threaded on the return connector 5, and return connector 5 is installed in the rear end of tubular shell 1 through screw thread, be positioned at tubular shell 1 to hold spray apparatus 4 its external diameters littler than the internal diameter of tubular shell 1; The suction hole 10 of return connector 5 and housing 1 inwall and the anti-channel connection of spray that holds spray apparatus 4 outer walls formation; Hold between the outer face of nozzle 8 under front end face and the self-excited oscillation cavity of spray apparatus 4 and leave the gap, the outlet of holding spray apparatus 4 is communicated with the drain hole 9 of return connector 5, and the other end of return connector 5 is through the valve seat 6 that is being threaded.The self-excited oscillation cavity 3 is the Hull nurse chamber that vibrates now; It is the cavity that structure is made up of cylindrical housings; The center of its upper surface is being provided with the conical top nozzle 7 that equates with nozzle 2 taperings; Nozzle 2 small end outlet diameters and top nozzle 7 big end inlet diameters equate, be provided with on the lower surface of cavity with top nozzle 7 corresponding tapers under nozzle 8.
Claims (2)
1. anti-coring apparatus that circulates of oscillatory spray formula; Comprise nozzle (2); Hold spray apparatus (4) and return connector (5); It is characterized in that: in tubular shell (1), nozzle (2) is installed and has top nozzle (7) and the self-excited oscillation cavity (3) of following nozzle (8) through screw thread; The rear end of holding spray apparatus (4) is through being threaded on the return connector (5), and return connector (5) is installed in the rear end of tubular shell (1) through screw thread, be positioned at tubular shell (1) to hold its external diameter of spray apparatus (4) littler than the internal diameter of tubular shell (1); The suction hole (10) of return connector (5) and housing (1) inwall and the anti-channel connection of spray that holds spray apparatus (4) outer wall formation; Hold between the outer face of nozzle (8) under front end face and the self-excited oscillation cavity of spray apparatus (4) and leave the gap, the outlet of holding spray apparatus (4) is communicated with the drain hole (9) of return connector (5), and the other end of return connector (5) is through the valve seat that is being threaded (6).
2. the anti-coring apparatus that circulates of oscillatory spray formula according to claim 1; It is characterized in that: the self-excited oscillation cavity (3) is the Hull nurse chamber that vibrates now; It is the cavity that structure is made up of cylindrical housings; The center of its upper surface is being provided with the conical top nozzle (7) that equates with nozzle (2) tapering, and nozzle (2) small end outlet diameter holds inlet diameter to equate greatly with top nozzle (7), be provided with on the lower surface of cavity with the corresponding taper of top nozzle (7) under nozzle (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205329977U CN202417368U (en) | 2011-12-19 | 2011-12-19 | Oscillatory spray type reverse-circulating coring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205329977U CN202417368U (en) | 2011-12-19 | 2011-12-19 | Oscillatory spray type reverse-circulating coring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417368U true CN202417368U (en) | 2012-09-05 |
Family
ID=46742141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205329977U Expired - Fee Related CN202417368U (en) | 2011-12-19 | 2011-12-19 | Oscillatory spray type reverse-circulating coring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417368U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295256A (en) * | 2014-08-12 | 2015-01-21 | 中国石油集团长城钻探工程有限公司 | Jet type coring tool |
| CN109973025A (en) * | 2019-04-01 | 2019-07-05 | 无锡锡钻地质装备有限公司 | A kind of reverse circulation sub applied to geological prospecting drilling tool |
| CN111350476A (en) * | 2020-05-09 | 2020-06-30 | 西南石油大学 | Jet flow crushing, sucking and recovering device suitable for natural gas hydrate exploitation |
-
2011
- 2011-12-19 CN CN2011205329977U patent/CN202417368U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295256A (en) * | 2014-08-12 | 2015-01-21 | 中国石油集团长城钻探工程有限公司 | Jet type coring tool |
| CN109973025A (en) * | 2019-04-01 | 2019-07-05 | 无锡锡钻地质装备有限公司 | A kind of reverse circulation sub applied to geological prospecting drilling tool |
| CN109973025B (en) * | 2019-04-01 | 2021-08-06 | 无锡锡钻地质装备有限公司 | Reverse circulation joint applied to geological exploration drilling tool |
| CN111350476A (en) * | 2020-05-09 | 2020-06-30 | 西南石油大学 | Jet flow crushing, sucking and recovering device suitable for natural gas hydrate exploitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20131219 |