CN202545098U - Downhole turbine generator system - Google Patents
Downhole turbine generator system Download PDFInfo
- Publication number
- CN202545098U CN202545098U CN2012201043602U CN201220104360U CN202545098U CN 202545098 U CN202545098 U CN 202545098U CN 2012201043602 U CN2012201043602 U CN 2012201043602U CN 201220104360 U CN201220104360 U CN 201220104360U CN 202545098 U CN202545098 U CN 202545098U
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- drill collar
- turbine
- turbogenerator
- turbine generator
- generator system
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- Expired - Fee Related
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Abstract
The utility model discloses a downhole turbine generator system, belonging to the downhole generator field. The downhole turbine generator system comprises a fish joint, a turbine generator, a positioning sheath, a locking mechanism and a drill collar, wherein the fish joint is connected with the upper end of the turbine generator; the turbine generator is located inside the drill collar; the lower end of the turbine generator is fixed to the drill collar through the locking mechanism; the positioning sheath is arranged at the connection part of the fish joint and the turbine generator and located between the drill collar and the connection part; the drill collar is fixed to the positioning sheath through a locking pin; and the drill collar, the positioning sheath and the fish joint are fixed through an anti-rotation pin. The downhole turbine generator system is lifted through the fish joint; when the lifting force is greater than the locking force of the locking mechanism, the turbine generator system becomes loose, and then is fished out of the mouth of the well; therefore, economic loss caused by the buried generator is avoided.
Description
Technical field
The utility model relates to the downhole generator field, and is particularly a kind of when running into down hole problem, can be salvaged the turbogenerator of well separately.
Background technique
The down-hole turbogenerator is simple, output power is high and free from environmental pollution, and it has been widely used in the measurement while drilling field as the power supply unit of downhole instrument.
The patent No. is to disclose a kind of down-hole turbogenerator in 200620158603.5 the utility model patent; Said turbogenerator is fixed on the drill collar inwall; Be made up of generator body, transmission turbine and rectifying device three parts, said generator body comprises stator coil and rotor magnet.
In the process that realizes the utility model; The inventor finds that there is following problem at least in existing technology: because the generator body-fixed is at the drill collar inwall; When down hole problems such as generation bit freezing or bury drills, generator can't take out from well, causes very big economic loss.
The model utility content
The utility model provides a kind of down-hole turbine generator system in order to solve the deficiency that exists in the existing technology, through in the turbogenerator upper end fishing joint being set; And through positioning sheath and locking mechanism with the generator body-fixed in drill collar; When running into down hole problem, fishing tool promotes turbine generator system through fishing joint, when lifting force during greater than the coupling mechanism force of said locking mechanism; Turbine generator system is loosening, thereby is salvaged well head.
The utility model solves the technological scheme that its technical problem adopted:
A kind of down-hole turbine generator system; Said turbine generator system comprises fishing joint, turbogenerator, positioning sheath, locking mechanism and drill collar; Said fishing joint is connected with the upper end of said turbogenerator, and it is inner that said turbogenerator is positioned at said drill collar, and the lower end of said turbogenerator is fixed through said locking mechanism and said drill collar; Said positioning sheath is located at the connection part of said fishing joint and said turbogenerator; And between said drill collar and said connection part, said drill collar and said positioning sheath are fixed through spring bolt, and said drill collar, said positioning sheath and said fishing joint are fixed through stop pin.
Particularly, said positioning sheath comprise cylindrical body be located on the said cylindrical lower surface and with the body concentric round boss of said cylinder;
The endoporus of said drill collar is not for waiting gauge structure; Said cylindrical side surface pastes with the inwall of said drill collar mutually; Paste mutually on the plane of the junction surface of said cylindrical body and said round boss and diameter change place of said endoporus, and the side surface of said round boss pastes with the inwall of said drill collar mutually.
Particularly; The internal cavities of said positioning sheath comprises upper cavity and lower cavity; Said upper cavity and said lower cavity are cylindrical shape, and the diameter of said upper cavity is different with the diameter of said lower cavity, and the cross section of said internal cavities is the T type;
The sidewall of said fishing joint bottom is provided with annular protrusion, and the outer wall of said annular protrusion pastes with the sidewall of said upper cavity mutually, and said annular protrusion is stuck in the joint of said upper cavity and said lower cavity;
The top of said turbogenerator is positioned at said lower cavity;
The middle part of said fishing joint is a frustum cone structure, and said frustum cone structure is stuck in the open upper end place of said upper cavity.
Particularly; Said annular protrusion is provided with pin hole; Said positioning sheath is provided with the hole corresponding with said pin hole, and said drill collar is provided with the anti-rotation pin-and-hole corresponding with said pin hole, and said stop pin passes said anti-rotation pin-and-hole and said hole is fixed in the said pin hole.
Particularly; Said locking mechanism comprises rubber sleeve and platen; Said rubber sleeve is located at the lower ending opening place of said drill collar, and between said turbogenerator and said drill collar, said rubber sleeve and said turbogenerator are interference fit; The pressure tooth of said platen is inserted between said rubber sleeve and the said drill collar, and the card of said platen is connected with the lower end surface of said drill collar through bolt.
Particularly; Said rubber sleeve comprises annular matrix and protruding block; One side of said protruding block links to each other with the inwall one of said annular matrix, and the outer wall of opposite side and said turbogenerator lower end is fitted, and the inwall of the outer wall of said annular matrix and said drill collar lower end is fitted.
Particularly; Said turbogenerator comprises turbine fluid director, turbine drives, generator body and rectification circuit, and said generator body comprises generator rotor shaft, magnetic coupling seal closure, upper end rotor magnetic sheet, lower end rotor magnetic sheet and stator coil, and said magnetic coupling seal closure covers the top of said generator rotor shaft; Said upper end rotor magnetic sheet is positioned on the circumference on said generator rotor shaft top; And be positioned at said magnetic coupling seal closure, said lower end rotor magnetic sheet is positioned on the circumference of said generator rotor shaft bottom, and it is outside that said stator coil is located at said lower end rotor magnetic sheet; Said turbine drives is a hollow structure; Be enclosed within outside the said magnetic coupling seal closure, and the diameter of the first half of said turbine drives is different with the diameter of Lower Half, the said first half is provided with blade; The external diameter of said blade is not more than the diameter of said Lower Half; Said Lower Half inside is provided with magnetic sheet, and said magnetic sheet and said upper end rotor magnetic sheet form one group of magnetic couple drive structure, and said rectification circuit is connected with said generator body lower end.
Said fishing joint inside is provided with cavity; The opening of said cavity is positioned at the lower end of said fishing joint; The top of said magnetic coupling seal closure is positioned at said cavity, and with said fishing joint through being threaded, said turbine fluid director is threaded onto the bottom of said fishing joint outward.
The top of said turbine drives is connected with said magnetic coupling seal closure through a TC bearing; The bottom of said turbine drives is connected with said magnetic coupling seal closure through the 2nd TC bearing; A said TC bearing and said the 2nd TC bearing all are threaded onto said magnetic coupling seal closure outward; Be threaded onto said turbine drives in a said TC bearing and said the 2nd TC bearing are equal; And a said TC bearing is consistent with the inclination direction of said blade with the rotation direction of the outer shroud screw thread of said the 2nd TC bearing, and the rotation direction of the interior ring screw thread of a said TC bearing and said the 2nd TC bearing is opposite with the inclination direction of said blade.
Further, the inclination direction of the rotation direction of said turbine fluid director screw thread and said turbine fluid director blade is opposite.
The beneficial effect of the technological scheme that the utility model embodiment provides is: through in the turbogenerator upper end fishing joint being set; And through positioning sheath and locking mechanism with the generator body-fixed in drill collar, when running into down hole problem, fishing tool is through fishing joint lifting turbine generator system; When lifting force during greater than the coupling mechanism force of said locking mechanism; Turbine generator system is loosening, thereby is salvaged well head, has avoided turbogenerator to be buried the economic loss that cause in the shaft bottom.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment's technological scheme; To do one to the accompanying drawing that uses among the embodiment below introduces simply; Obviously, below listed accompanying drawing only be some embodiments of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the overall structure schematic representation of the down-hole turbine generator system that provides of the utility model embodiment;
Fig. 2 is the partial schematic diagram of Fig. 1;
Fig. 3 is the A-A directional profile figure of Fig. 1;
Fig. 4 is the axial schematic representation of the locking mechanism that provides of the utility model embodiment;
Fig. 5 is the structural representation of the turbogenerator that provides of the utility model embodiment.
In the accompanying drawing, the component list of each label representative is following:
1, fishing joint, 2, turbogenerator, 3, positioning sheath, 4, locking mechanism, 5, drill collar, 6, spring bolt; 7, stop pin, 8, cylindrical body, 9, round boss, 10, annular protrusion, 11, pin hole, 12, the anti-rotation pin-and-hole; 13, rubber sleeve, 14, platen, 15, bolt, 16, the generator body housing, 17, the turbine fluid director, 18, turbine drives; 19, rectification circuit, 20, generator rotor shaft, 21, magnetic coupling seal closure, 22, upper end rotor magnetic sheet, 23, lower end rotor magnetic sheet, 24, stator coil; 25, magnetic sheet, the 26, the one TC bearing, the 27, the 2nd TC bearing, 28, the rectification circuit shell, 29, protruding block.
Embodiment
For the purpose, technological scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model mode of execution is done to describe in detail further below.
Referring to Fig. 1, the utility model embodiment provides a kind of down-hole turbine generator system, and said turbine generator system comprises fishing joint 1, turbogenerator 2, positioning sheath 3, locking mechanism 4 and drill collar 5.The maximum outside diameter of said turbine generator system is less than the diameter of top drill pipe bore.Fishing joint 1 is connected with the upper end of turbogenerator 2; Turbogenerator 2 is positioned at drill collar 5 inside; The lower end of turbogenerator 2 is fixing with drill collar 5 through locking mechanism 4, and positioning sheath 3 is located at the connection part of fishing joint 1 and turbogenerator 2, and between drill collar 5 and said connection part; Drill collar 5 is fixing through spring bolt 6 with positioning sheath 3, and drill collar 5, positioning sheath 3 and fishing joint 1 are fixing through stop pin 7.
Referring to Fig. 2, positioning sheath 3 comprises cylindrical body 8 and round boss 9, and round boss 9 is located on the lower surface of cylindrical body 8, and the concentric and diameter of round boss 9 and cylindrical body 8 is less than the diameter of cylindrical body 8, and round boss 9 links to each other with cylindrical body 8 one; Referring to Fig. 1; The endoporus of drill collar 5 is not for waiting gauge structure; First half aperture is big, and the Lower Half aperture is little, and the side surface of cylindrical body 8 pastes with the inwall of the first half of drill collar 5 mutually; Cylindrical body 8 is stuck on the plane of drill collar 5 diameter of bore changes place with the junction surface of round boss 9, and the side surface of round boss 9 pastes with the inwall of the Lower Half of drill collar 5 mutually.
Referring to Fig. 2; Positioning sheath 3 inner hollow, the internal cavities of positioning sheath 3 comprises upper cavity and lower cavity, said upper cavity and said lower cavity are cylindrical shape; And the diameter of said upper cavity is greater than the diameter of said lower cavity, and the cross section of said internal cavities is the T type; The sidewall of fishing joint 1 bottom is provided with annular protrusion 10, and the outer wall of annular protrusion 10 pastes with the sidewall of said upper cavity mutually, and annular protrusion 10 is stuck in the joint of said upper cavity and said lower cavity; The top of turbogenerator 2 is positioned at said lower cavity; The middle part of fishing joint 1 is a frustum cone structure, and said frustum cone structure is stuck in the open upper end place of said upper cavity.
Referring to Fig. 1, annular protrusion 10 is provided with pin hole 11, and positioning sheath 3 is provided with and pin hole 11 corresponding holes, and drill collar 5 is provided with and pin hole 11 corresponding anti-rotation pin-and-holes 12, and stop pin 7 is fixed in the pin hole 11 through anti-rotation pin-and-hole 12 and said hole.
Among the utility model embodiment, the assembly process between positioning sheath 3 and fishing joint 1, turbogenerator 2 and drill collar 5 threes is:
Referring to Fig. 3, the M8 screw is passed said hole and pin hole 11, connect fishing joint 1 and positioning sheath 3; Positioning sheath 3 and fishing joint 1 and turbogenerator 2 are together pushed in the drill collar 5, push the back and rotate fishing joint 1, make the anti-rotation pin-and-hole 12 of drill collar 5 aim at the pin hole 11 of fishing joint 1 with the rotary tooling bar; With fishing joint 1 and drill collar 5 lockings, take out the M8 screw with spring bolt 6 then, stop pin 7 is screwed in anti-rotation pin-and-hole 12; Make stop pin 7 pass said hole, be fixed in the pin hole 11.
Referring to Fig. 1 and Fig. 4, locking mechanism comprises rubber sleeve 13 and platen 14.Rubber sleeve 13 is located at the lower ending opening place of drill collar 5, and is stuck between turbogenerator 2 and the drill collar 5, and rubber sleeve 13 is an interference fit with turbogenerator 2; Platen 14 comprises the card and pressure tooth of ring, presses tooth to be positioned at a side of card, and the pressure tooth of platen 14 is inserted between rubber sleeve 13 and the drill collar 5; The card of platen 14 is connected with the lower end surface of drill collar 5 through bolt 15; The installation of rubber sleeve 13 for ease, rubber sleeve 13 comprise annular matrix and protruding block 29, and a side of protruding block 29 links to each other with the inwall one of said annular matrix; The outer wall of opposite side and turbogenerator 2 lower ends is stung to be close to and is closed, and the inwall of the outer wall of said annular matrix and drill collar 5 lower ends is stung to be close to and closed.Moving axially of the turbogenerator 2 that causes owing to underground vibrating when locking mechanism can prevent horizontal drilling.
Both assembly processes of locking mechanism 4 and turbogenerator 2 and drill collar 5 are:
The down-hole turbine generator system that the utility model embodiment provides; Through fishing joint being set in the turbogenerator upper end; Through positioning sheath and locking mechanism with the generator body-fixed in drill collar, when running into down hole problem, fishing tool promotes turbine generator system through the frustum that drags for fishing joint; When lifting force during greater than the coupling mechanism force of said locking mechanism; Turbine generator system is loosening, thereby is salvaged well head, has avoided turbogenerator to be buried the economic loss that cause in the shaft bottom.
Referring to Fig. 5, in the utility model embodiment, turbogenerator 2 comprises turbine fluid director 17, turbine drives 18, generator body and rectification circuit 19.
Said generator body comprises generator rotor shaft 20, magnetic coupling seal closure 21, upper end rotor magnetic sheet 22, lower end rotor magnetic sheet 23 and stator coil 24: upper end rotor magnetic sheet 22 is positioned on the circumference of generator rotor shaft 20 upper ends; Magnetic coupling seal closure 21 covers on the top of generator rotor shaft 20; Upper end rotor magnetic sheet 22 is positioned at magnetic coupling seal closure 21; Lower end rotor magnetic sheet 23 is positioned on the circumference of generator rotor shaft 20 bottoms; Stator coil 24 is located at rotor magnetic sheet 23 outsides, lower end, in order to protect the internal structure of said generator body, this external generator body housing 16 that also is provided with of said generator;
Rectification circuit 19 is connected with said generator body lower end, and rectification circuit 19 outsides are provided with right way circuit case 28.Turbine fluid director 17 is positioned at the top of turbine drives 18.Fishing joint 1 inside is provided with cavity, and the opening of said cavity is positioned at the lower end of fishing joint 1, and the top of magnetic coupling seal closure 21 is positioned at said cavity, and with fishing joint 1 through being threaded, the turbine fluid director 17 outer bottoms that are threaded onto fishing joint 1.The inclination direction of the rotation direction of turbine fluid director 17 screw threads and turbine fluid director 17 blades is opposite, thereby the radial component that has guaranteed mud impulse turbine refluence device 17 has the locking effect to it, prevents that this fluid director from getting loose under the vibrations condition.
The working procedure of the turbogenerator that the utility model embodiment provides is:
During drilling well; Mud rotates turbine drives 18 through impacting turbine drives 18 behind turbine fluid director 17 water conservancy diversion, and turbine drives 18 drives generator rotor shaft 20 through magnetic couple drive structure and rotates; Make the rotor magnetic sheet 23 of circle distribution in stator coil 24, rotate in its underpart; Realize the generating of stator coil 24 cutting magnetic induction lines, the threephase AC that stator coil 24 cutting magnetic induction lines produce is a VDC through rectification circuit 19 rectifications, provides to downhole instrument.
Among the utility model embodiment:
The processing of positioning sheath 20 usefulness wear-resistant metal materials has reduced 20 wearing and tearing of turbine drives 3 positioning sheath that high speed rotating causes in positioning sheath 20;
The integrated poured moulding process processing of nonmetal rubber sleeve 13 usefulness thermostable fluorine rubber in the locking mechanism, the rubber sleeve shore hardness is not less than 90 degree, elongation at break 150-350%;
The one TC bearing 26 and the 2nd TC bearing 27 are by carcass and tungsten carbide powder and cemented carbide, combine together through sintering, after machining forms, cemented carbide thickness is not less than 2mm, and the circumference coverage scale is not less than 65%;
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. down-hole turbine generator system; It is characterized in that; Said turbine generator system comprises fishing joint, turbogenerator, positioning sheath, locking mechanism and drill collar; Said fishing joint is connected with the upper end of said turbogenerator, and it is inner that said turbogenerator is positioned at said drill collar, and the lower end of said turbogenerator is fixed through said locking mechanism and said drill collar; Said positioning sheath is located at the connection part of said fishing joint and said turbogenerator; And between said drill collar and said connection part, said drill collar and said positioning sheath are fixed through spring bolt, and said drill collar, said positioning sheath and said fishing joint are fixed through stop pin.
2. down-hole according to claim 1 turbine generator system is characterized in that,
Said positioning sheath comprise cylindrical body be located on the said cylindrical lower surface and with the body concentric round boss of said cylinder;
The endoporus of said drill collar is not for waiting gauge structure; Said cylindrical side surface pastes with the inwall of said drill collar mutually; Paste mutually on the plane of the junction surface of said cylindrical body and said round boss and diameter change place of said endoporus, and the side surface of said round boss pastes with the inwall of said drill collar mutually.
3. down-hole according to claim 2 turbine generator system is characterized in that,
The internal cavities of said positioning sheath comprises upper cavity and lower cavity, and said upper cavity and said lower cavity are cylindrical shape, and the diameter of said upper cavity is different with the diameter of said lower cavity, and the cross section of said internal cavities is the T type;
The sidewall of said fishing joint bottom is provided with annular protrusion, and the outer wall of said annular protrusion pastes with the sidewall of said upper cavity mutually, and said annular protrusion is stuck in the joint of said upper cavity and said lower cavity;
The top of said turbogenerator is positioned at said lower cavity;
The middle part of said fishing joint is a frustum cone structure, and said frustum cone structure is stuck in the open upper end place of said upper cavity.
4. down-hole according to claim 3 turbine generator system; It is characterized in that; Said annular protrusion is provided with pin hole; Said positioning sheath is provided with the hole corresponding with said pin hole, and said drill collar is provided with the anti-rotation pin-and-hole corresponding with said pin hole, and said stop pin passes said anti-rotation pin-and-hole and said hole is fixed in the said pin hole.
5. down-hole according to claim 1 turbine generator system; It is characterized in that said locking mechanism comprises rubber sleeve and platen, said rubber sleeve is located at the lower ending opening place of said drill collar; And between said turbogenerator and said drill collar; Said rubber sleeve and said turbogenerator are interference fit, and the pressure tooth of said platen is inserted between said rubber sleeve and the said drill collar, and the card of said platen is connected with the lower end surface of said drill collar through bolt.
6. down-hole according to claim 5 turbine generator system; It is characterized in that; Said rubber sleeve comprises annular matrix and protruding block; One side of said protruding block links to each other with the inwall one of said annular matrix, and the outer wall of opposite side and said turbogenerator lower end is fitted, and the inwall of the outer wall of said annular matrix and said drill collar lower end is fitted.
7. down-hole according to claim 1 turbine generator system is characterized in that, said turbogenerator comprises turbine fluid director, turbine drives, generator body and rectification circuit; Said generator body comprises generator rotor shaft, magnetic coupling seal closure, upper end rotor magnetic sheet, lower end rotor magnetic sheet and stator coil; Said magnetic coupling seal closure covers the top of said generator rotor shaft, and said upper end rotor magnetic sheet is positioned on the circumference on said generator rotor shaft top, and is positioned at said magnetic coupling seal closure; Said lower end rotor magnetic sheet is positioned on the circumference of said generator rotor shaft bottom; It is outside that said stator coil is located at said lower end rotor magnetic sheet, and said turbine drives is a hollow structure, is enclosed within outside the said magnetic coupling seal closure; And the diameter of the first half of said turbine drives is different with the diameter of Lower Half; The said first half is provided with blade, and the external diameter of said blade is not more than the diameter of said Lower Half, and said Lower Half inside is provided with magnetic sheet; Said magnetic sheet and said upper end rotor magnetic sheet form one group of magnetic couple drive structure, and said rectification circuit is connected with said generator body lower end.
8. down-hole according to claim 7 turbine generator system; It is characterized in that; Said fishing joint inside is provided with cavity, and the opening of said cavity is positioned at the lower end of said fishing joint, and the top of said magnetic coupling seal closure is positioned at said cavity; And with said fishing joint through being threaded, said turbine fluid director is threaded onto the bottom of said fishing joint outward.
9. down-hole according to claim 7 turbine generator system; It is characterized in that; The top of said turbine drives is connected with said magnetic coupling seal closure through a TC bearing; The bottom of said turbine drives is connected with said magnetic coupling seal closure through the 2nd TC bearing; A said TC bearing and said the 2nd TC bearing all are threaded onto said magnetic coupling seal closure outward; Be threaded onto said turbine drives in a said TC bearing and said the 2nd TC bearing are equal, and a said TC bearing is consistent with the inclination direction of said blade with the rotation direction of the outer shroud screw thread of said the 2nd TC bearing, the rotation direction of the interior ring screw thread of a said TC bearing and said the 2nd TC bearing is opposite with the inclination direction of said blade.
10. down-hole according to claim 8 turbine generator system is characterized in that, the inclination direction of the rotation direction of said turbine fluid director screw thread and said turbine fluid director blade is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201043602U CN202545098U (en) | 2012-03-19 | 2012-03-19 | Downhole turbine generator system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201043602U CN202545098U (en) | 2012-03-19 | 2012-03-19 | Downhole turbine generator system |
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| CN202545098U true CN202545098U (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201043602U Expired - Fee Related CN202545098U (en) | 2012-03-19 | 2012-03-19 | Downhole turbine generator system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470433A (en) * | 2013-08-19 | 2013-12-25 | 广东普洛测控科技有限公司 | Underground mud power generation device |
| CN106368639A (en) * | 2016-09-21 | 2017-02-01 | 中国石油集团渤海钻探工程有限公司 | Fishing tool of turbine generator of logging-while-drilling instrument |
| CN106411095A (en) * | 2016-11-30 | 2017-02-15 | 北京蒙德纳科技发展有限公司 | Power supply system of wireless drilling inclinometer underground instrument |
| CN108756800A (en) * | 2018-07-19 | 2018-11-06 | 长江大学 | A kind of welded type underground fishing tool |
| CN109185017A (en) * | 2018-10-17 | 2019-01-11 | 中国科学院地质与地球物理研究所 | Generator front end assemblies and shaft |
| CN110607996A (en) * | 2019-08-30 | 2019-12-24 | 中国地质大学（武汉） | Turbine drilling tool underground friction nanometer power generation nipple |
| CN111425172A (en) * | 2020-03-25 | 2020-07-17 | 中国石油天然气股份有限公司 | Chemical flooding constant-current dispenser |
-
2012
- 2012-03-19 CN CN2012201043602U patent/CN202545098U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470433A (en) * | 2013-08-19 | 2013-12-25 | 广东普洛测控科技有限公司 | Underground mud power generation device |
| CN103470433B (en) * | 2013-08-19 | 2016-06-22 | 广东普洛测控科技有限公司 | A kind of underground mud power generation device |
| CN106368639A (en) * | 2016-09-21 | 2017-02-01 | 中国石油集团渤海钻探工程有限公司 | Fishing tool of turbine generator of logging-while-drilling instrument |
| CN106411095A (en) * | 2016-11-30 | 2017-02-15 | 北京蒙德纳科技发展有限公司 | Power supply system of wireless drilling inclinometer underground instrument |
| CN106411095B (en) * | 2016-11-30 | 2019-08-06 | 北京蒙德纳科技发展有限公司 | A kind of wireless drilling inclinometers downhole instrument power supply system |
| CN108756800A (en) * | 2018-07-19 | 2018-11-06 | 长江大学 | A kind of welded type underground fishing tool |
| CN108756800B (en) * | 2018-07-19 | 2023-09-22 | 长江大学 | Welding type downhole fishing tool |
| CN109185017A (en) * | 2018-10-17 | 2019-01-11 | 中国科学院地质与地球物理研究所 | Generator front end assemblies and shaft |
| CN110607996A (en) * | 2019-08-30 | 2019-12-24 | 中国地质大学（武汉） | Turbine drilling tool underground friction nanometer power generation nipple |
| CN110607996B (en) * | 2019-08-30 | 2021-11-05 | 中国地质大学（武汉） | Turbine drilling tool underground friction nanometer power generation nipple |
| CN111425172A (en) * | 2020-03-25 | 2020-07-17 | 中国石油天然气股份有限公司 | Chemical flooding constant-current dispenser |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20210319 |