CN202900119U - Ground extraction gas drilled well casing dredging device - Google Patents
Ground extraction gas drilled well casing dredging device Download PDFInfo
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- CN202900119U CN202900119U CN 201220335874 CN201220335874U CN202900119U CN 202900119 U CN202900119 U CN 202900119U CN 201220335874 CN201220335874 CN 201220335874 CN 201220335874 U CN201220335874 U CN 201220335874U CN 202900119 U CN202900119 U CN 202900119U
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- well
- cleaning piece
- well casing
- casing
- spiral cleaning
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Abstract
The utility model relates to a ground extraction gas drilled well casing dredging device which is used in the field of coal mine gas control. The ground extraction gas drilled well casing dredging device is composed of a well opening rotating assembly (1), a flexible shaft (2), a spiral cleaning piece (4) and a supporting sleeve (6). The ground extraction gas drilled well casing dredging device is characterized in that by means of conveying mechanism of a spiral conveyer on material, a cylindrical helical spring is chosen as a dredge cleaning piece, the dredge cleaning piece is hoisted in a drilled well screen pipe section, a manually-operated rotating mechanism is arranged on a well opening portion, a power transmission flexible shaft is arranged along a well casing, the well opening rotating assembly (1), the flexible shaft (2) and the spiral cleaning piece (4) are sequentially connected from top to bottom, and the supporting sleeve (6) is used for supporting a shaft neck at the lower end of the spiral cleaning piece. The spiral cleaning piece (4) is used for cleaning and dredging blocking objects and the like in the well casing on the lower portion of a drilled well when driven by the well opening rotating assembly (1) and the flexible shaft (6) to rotate, and therefore normal extraction of gas by a ground drilled well can be maintained.
Description
Technical field
The utility model relates to a kind of ground drawing-off gas pneumatic drill well dredger, and this device is applicable to control of coalmine gas and device in Gas ground extraction technical field.
Background technology
In existing coal mine gas process for comprehensively treating, relate to the method for utilizing CMM Surface Well Drilling gas, such as ground well drainage Seam Mining district, the goaf gas gas technology (patent No.: 200510025402.8) of Huainan Mining's invention and enforcement.This technology run through the vertical shaft in each coal seam by the ground Drilling that faces down in advance, and along pit shaft mounting sleeve (well casing), the sleeve pipe tube wall that wherein passes through each coal seam section was drilled with the air sifter hole namely before underground each seam mining, and this section sleeve pipe claims screen casing.Cheng Jinghou exploits first underseam, because of the impact of adopting, the device in Gas in the above zone of underseam is able to release and has increased flowability, under the extraction suction function, the gas that covers the gas pressure relief in each coal seam on the well casing peripheral region and lodge in the bottommost coal seam goaf compiles to the well casing place, sieve aperture by screen casing etc. is gathered in the well casing, and upwards draining into ground along well casing, the things such as coal dust cinder that influx well casing with coal-bed gas gas then drain into drilling well bottommost coal seam goaf downwards along well casing.
The method is in implementation process, indivedual residual problems are still waiting to solve, one of them is: the things such as coal dust cinder that influx well casing do not stop up because row under the reasons such as well casing distortion fracture does not freely form gradually, stop up section and increase the upper row who then affects gradually device in Gas, finally cause not exhaust of well casing, drilling well loses the extraction function, causes whole extraction well to be scrapped.There is no at present the mechanical device of this problem of processing, in a single day this blockage appears in the extraction well that is delivered for use, and does not effectively remedy means and solution.
The utility model content
In a single day the problem that can't dredge appears stopping up for present ground extraction device in Gas drilling well well casing, the utility model proposes a kind of can be at the well casing dredging method of terrestrial operation, adopt the mass transport mechanism of conveying worm, realization is that the screen casing obstruction is cleared up dredging to the bottom well casing, make the thing such as coal dust cinder can be along the normal lower row of well casing, in order to make device in Gas upwards drain into ground along well casing, thereby keep the drilling well of bleeding to the long-term extraction of device in Gas.
The technical solution of the utility model is:
Described ground extraction device in Gas drilling well well casing dredger, use conveying worm to conveying and the auxiliary agitation mechanism of material, selecting helical spring is the spiral cleaning piece as the dredging executive component, and device comprises well head rotating assembly (1), flexible axle (2), spiral cleaning piece (4), support set (6).Spiral cleaning piece (4) is arranged in the bore screen pipeline section, at well head place configuration manpower rotating mechanism and along well casing configuration power transmission flexible axle (2), well head rotating assembly (1), flexible axle (2) and spiral cleaning piece (4) three connect from top to bottom successively, with the axle journal of support set (6) supporting setting screw cleaning piece (4) lower end.
Described spiral cleaning piece (4) adopts cylindrical helical spring, and its lower end is axle journal.Integral hoisting is in the sieve tube segment of drilling well bottom.
Described well head rotating assembly (1) is comprised of well head supporting and rolling disc two parts; The basic structure of well head supporting be a cover with the transmission minor axis assembly of axial thrust bearing, and the assembly upside is equipped with sealing device; The minor axis upper end connects a manual rolling disc, and the minor axis lower end then is connected with flexible axle (2) upper end.
Described flexible axle (2) is formed by connecting piecemeal with having certain flexible round steel.
Described support set (6) is comprised of the longitudinal supporting plate of a cylindrical sleeve and outer rim welding thereof.
The good effect that the utility model has: use conveying worm to conveying and the auxiliary agitation mechanism of material, utilize the rotation of cylindrically coiled spring that obstruction is dredged cleaning, solved gas gas well well casing in case the problem that does not have solution occurs stopping up, can avoid the drilling well of bleeding of considerable amount only to cause scrapping because screen casing stops up, to keep for a long time normal mash gas extraction gas of costly ground drilling.
Description of drawings
Figure of description is the schematic diagram of the Nomenclature Composition and Structure of Complexes of the present utility model and the drilling well well casing of bleeding.
Among the figure: 1, well head rotating assembly, 2, flexible axle, 3, the drilling well inner sleeve of bleeding, 4, the spiral cleaning piece, 5, screen casing, 6, support set.
The specific embodiment
Below in conjunction with accompanying drawing, by embodiment the utility model is described further.
Embodiment:
Referring to Figure of description, described ground extraction device in Gas drilling well well casing dredger is by well head rotating assembly (1), flexible axle (2), four parts such as spiral cleaning piece (4) and support set (6) form, and wherein first three part is connected from top to bottom successively by well head.
Described well head rotating assembly (1) is comprised of well head supporting and rolling disc two parts.Be convenient installing, be hinged with a right angle elbow in the overhead appropriate location of surface well inner sleeve, rotating assembly (1) is namely taken root on the big syphon wall that is fixed on elbow, the basic structure of well head supporting is that a cover is with the transmission minor axis assembly of axial thrust bearing, and sealing device is equipped with at transparent cover place in upper end, in case the pipeline methane gas leaks outside.It is rolling disc that the minor axis upper end connects a manual rotating disk.The upper end of minor axis lower end and flexible axle (2) is welded to connect, and flexible axle (2) and spiral cleaning piece (4) integral body all is lifted in the well casing and screen casing of drilling well.
The elasticity round steel of the available suitable diameter of described flexible axle (2) is formed by connecting piecemeal, and the junction should be able to transmitting torque.The overall length of flexible axle is consistent with the inner sleeve of drilling well (not containing screen casing) length, is lifted in the well casing, and its lower end is connected with the upper end of spiral cleaning piece (4), and its upper end is connected with the minor axis of well head rotating assembly (1).
Described spiral cleaning piece (4) adopts cylindrically coiled spring, and cylindrically coiled spring is easy to make and is not fragile.The total length of spiral cleaning piece is greater than the total length of drilling well screen casing, and the helical spring upper end directly is connected with flexible axle, and it is lifted in the screen casing.Journal structure is made in the helical spring lower end, in the hole of the splicing sleeve of packing into (6).
Described support set (6) is at three longitudinal supporting plates of the uniform welding of a cylindrical sleeve outer rim, and integral solder is fixed on the inside pipe wall of drilling well screen casing bottom, its effect is the axle journal of supporting and setting screw cleaning piece (4) lower end, makes spiral cleaning piece (4) lower end rotate and limit its axial stretching around a fixed point.
The rolling disc of the well head rotating assembly (1) that exposes by manual rotation to the bottom transmitting torque, is rotated spiral cleaning piece (4) through flexible axle (2).When backward rotation, rocking around heart rotation and integral body thereof of spiral cleaning piece (4) has the well casing obstruction and upwards pushes agitaion, can to the closely knit obstruction that hardens in the well casing carry stir loosening, for discharging downwards creates favorable conditions; When forward rotation, spiral cleaning piece (4) then has downward pushing to squeeze effect to obstruction in the well casing, and makes the interior obstruction of pipe progressively discharge the goaf that the mouth of pipe falls into underseam by gravity, thereby realizes the cleaning dredging to lower screen.
Claims (5)
1. one kind is used for ground extraction device in Gas drilling well well casing dredger, use conveying worm to the conveying mechanism of material, select helical spring as the dredging executive component, it is characterized in that by well head rotating assembly (1), flexible axle (2), spiral cleaning piece (4), support set (6) forms, the spiral cleaning piece is lifted on the bore screen pipeline section, at well head place configuration manpower rotating mechanism and along well casing configuration power transmission flexible axle (2), well head rotating assembly (1), flexible axle (2) and spiral cleaning piece (4) three connect from top to bottom successively, with the axle journal of support set (6) supporting spiral cleaning piece lower end.
2. ground extraction device in Gas drilling well well casing dredger according to claim 1 is characterized in that: described spiral cleaning piece (4) adopts cylindrical helical spring, and its lower end is axle journal, and integral hoisting is in the sieve tube segment of drilling well bottom.
3. ground extraction device in Gas drilling well well casing dredger according to claim 1 is characterized in that: described well head rotating assembly (1) is comprised of well head supporting and rolling disc two parts.
4. ground extraction device in Gas drilling well well casing dredger according to claim 1, it is characterized in that: described flexible axle (2) is formed by connecting piecemeal with having certain flexible round steel.
5. ground extraction device in Gas drilling well well casing dredger according to claim 1 is characterized in that: described support set (6) is comprised of the longitudinal supporting plate of a cylindrical sleeve and outer rim welding thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220335874 CN202900119U (en) | 2012-06-30 | 2012-06-30 | Ground extraction gas drilled well casing dredging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220335874 CN202900119U (en) | 2012-06-30 | 2012-06-30 | Ground extraction gas drilled well casing dredging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900119U true CN202900119U (en) | 2013-04-24 |
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ID=48120802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220335874 Expired - Fee Related CN202900119U (en) | 2012-06-30 | 2012-06-30 | Ground extraction gas drilled well casing dredging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900119U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883348A (en) * | 2014-04-02 | 2014-06-25 | 淮北矿业（集团）勘探工程有限责任公司 | Method for welding well ground pipeline for gas extraction in mining area |
| CN108868679A (en) * | 2017-05-16 | 2018-11-23 | 中国石油天然气股份有限公司 | A kind of coal bed gas naked eye multi-branched horizontal well wellbore dredging tool |
| CN111974762A (en) * | 2020-08-12 | 2020-11-24 | 宜昌南玻光电玻璃有限公司 | Blockage clearing device and method for cullet chute |
-
2012
- 2012-06-30 CN CN 201220335874 patent/CN202900119U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883348A (en) * | 2014-04-02 | 2014-06-25 | 淮北矿业（集团）勘探工程有限责任公司 | Method for welding well ground pipeline for gas extraction in mining area |
| CN103883348B (en) * | 2014-04-02 | 2016-04-20 | 淮北矿业（集团）勘探工程有限责任公司 | The welding method of a kind of minery gas pumping well ground pipeline |
| CN108868679A (en) * | 2017-05-16 | 2018-11-23 | 中国石油天然气股份有限公司 | A kind of coal bed gas naked eye multi-branched horizontal well wellbore dredging tool |
| CN108868679B (en) * | 2017-05-16 | 2021-03-09 | 中国石油天然气股份有限公司 | Coal bed gas bore hole multi-branch horizontal well hole dredging tool |
| CN111974762A (en) * | 2020-08-12 | 2020-11-24 | 宜昌南玻光电玻璃有限公司 | Blockage clearing device and method for cullet chute |
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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: 20130424 Termination date: 20130630 |