CN201269096Y - Down-hole electric generating apparatus - Google Patents
Down-hole electric generating apparatus Download PDFInfo
- Publication number
- CN201269096Y CN201269096Y CNU2008201401697U CN200820140169U CN201269096Y CN 201269096 Y CN201269096 Y CN 201269096Y CN U2008201401697 U CNU2008201401697 U CN U2008201401697U CN 200820140169 U CN200820140169 U CN 200820140169U CN 201269096 Y CN201269096 Y CN 201269096Y
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- Prior art keywords
- impeller
- motor
- generating apparatus
- electric generating
- pipe nipple
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Abstract
The utility model discloses a generating set providing electric energy support for subsurface equipment and tools, which comprises a driving short piece, a coupling short piece and a motor short piece. The device divides an impeller drive shaft and a motor shaft into a two-section structure, and the middle is connected through a shaft coupling with center adjusting function, thus effectively reducing the coaxality requirement of shafting; the impeller in the device adopts special design structure, therefore, the output power is relatively large and can reach above 1 kW; and a rotor and a stator of the motor are dipped in the hydraulic oil, thus reducing the manufacture difficulty and increasing the working reliability. The generating set not only can provide high-power electric energy, but also can work underground stably and reliably.
Description
Technical field:
The utility model relates to a kind of device that is used for down-hole generating in petroleum works, particularly a kind of TRT that provides electric energy to support for downhole instrument and instrument.
Background technology:
Modern oil/gas drilling technology relates to the underground data measuring of multiple different parameters and provides formation data and drilling engineering information required in the drilling process by telemetry system.In downhole measurement tools, be installed in the data that sensor obtains in the nearly drill bit drill string and be transferred to ground by signal the spread of the rumours device, confession terrestrial operation personnel analyze and judge.Downhole measurement tools obtains electric power in the down-hole have battery pack and two kinds of approach of turbine generator, because battery capacity is limited, the big current work duration is short, and at high temperature its security performance is difficult to guarantee, battery material is because itself characteristic simultaneously, transportation, storing and scrapping all needs to carry out special disposal.In downhole measurement tools, the power consumption of measuring transducer and associated electronics only has several watts to tens watts usually, and typical telemetry system power consumption needs 60 watts at least, maximum possible reaches 700 watts, be the operating time of prolongation instrument in the down-hole, external at present generally with of the standard configuration of down-hole turbine generator as downhole measurement tools, to reduce battery capacity and volume, utilize generator to be electronic sensor group and the power supply of signal telemetry device for the battery electric energy supplement reaches, product that has even cancellation battery, directly provide electric power by turbine generator, China does not also have corresponding down-hole electric generating apparatus instrumentation at present.Increase along with the oil gas well mining degree of depth and horizontal section length, the prolongation of the rising of well temperature and downhole measurement tools underground work time, and the use of the electromagnetic wave data telemetry system of high power consumption, the capacity of downhole measurement tools power system and reliability become the key of restriction underground survey system operate as normal, and down-hole electric generating apparatus is the most effectual way that solves this difficult problem, because offshore company maintains secrecy at the core technology and the design aspect of down-hole turbine generator, domestic in recent years some R﹠D institution comes out but yet there are no ripe commercial product also in the tackling of key scientific and technical problems of carrying out correlation technique.
US Patent specification US5 discloses the down-hole downhole measurement tools of a kind of integrated drilling fluid pulse generator and turbine generator in 517,464.Turbine generator and drilling fluid pulse generator are integrated, and turbine generator is made up of turbine propulsion device, driving shaft, speed changer (no-load voltage ratio 14: 1), threephase alternator, rotation-speed measuring device.Because the restriction in space, down-hole and the characteristic of blade wheel structure, the power that generator provides is less, is generally tens watts, can not satisfy high-power requirement; System adopts speed-changing gear box to realize the connection of turbine and motor, complex structure; On-line operation such as bearing and coil requires highly in drilling fluid to the insulating properties of drilling fluid quality, bearing performance and coil, and runs up in down-hole high temperature, strong vibration adverse circumstances midium or long term and very easily to damage, thus the application life of having reduced turbine generator.
A kind of being used for the down-hole drilling fluids motor that bores the instrument power supply disclosed among the Chinese patent manual CN1865693A.The drilling fluid generator is made up of turbine, driving shaft, speed changer, magnetic coupling, spacer, generator, and transmission adopted magnetic coupling technology is utilized slippage effect that inside and outside magnetic force coupling produces and the magnetic force coupling technical protection generator that is flexible coupling.Generator rotor shaft is connected with speed changer by magnetic coupling, has avoided coil to contact with drilling fluid with bearing, still, its reducer structure and magnetic coupling complex structure, the magnetic coupling sliding contact surface works in the drilling fluid easy to wear, and power is less.
The utility model content:
The purpose of this utility model is that the down-hole electric generating apparatus that provides a kind of power output bigger, simple in structure is provided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of down-hole drilling fluids TRT comprises driving pipe nipple, connection pipe nipple and motor pipe nipple that impeller drive shaft and motor shaft are the two-part structure in the described driving pipe nipple, and the rotor coil and the stator coil of generator all are immersed in the dynamo oil.
Described two-part structure is meant that impeller drive shaft connects transfer torque with motor shaft by hitch bar.Impeller drive shaft is provided with rotatory sealing near impeller end.Described connection pipe nipple comprises centralizer and plug, is installed in the upper end of motor pipe nipple.Impeller is fixed on the impeller drive shaft that drives pipe nipple, at the inlet of impeller filter is installed, and between impeller and the drill collar guide shell is housed.Impeller is one or more levels axial-flow type or radial-flow type structure.
The beneficial effect that down-hole electric generating apparatus described in the utility model has is, this structure is that impeller drive shaft and motor shaft are divided into the two-part structure, and middle shaft coupling by can aligning links, thereby has reduced the axiality requirement of axle system effectively; Impeller in the structure adopts special project organization, thereby power output is bigger, can reach more than the 1kW, and make it be subjected to the influence of drilling fluid displacement less by optimal design; The rotor of motor and stator and bearing all are immersed in the hydraulic oil, have reduced manufacture difficulty, have increased functional reliability.This utility model not only can provide powerful electric energy, and can be in the down-hole reliable and stable work.
Description of drawings:
Fig. 1 is the rough schematic of down-hole electric generating apparatus
Fig. 2 is the structural representation of down-hole electric generating apparatus
1. drill collar 2. impeller pressure caps 3. impellers 4. glands 5. rotatory sealings 6. hitch bars 7. motor driving shafts 8. permanent magnets 9. high pressure plugs 10. floating pistons 11. pressurized springs 12. filter screens 13. guide shells 14. centralizers 15. plugs 16. impeller drive shaft 17. stator coils 18. motor pipe nipple resistance to compression tubes 19. joints 20. oil filler plugs 21. drive pipe nipple 22. connection pipe nipples 23. motor pipe nipples
The specific embodiment:
Now, the utility model is further described in conjunction with Figure of description.
Fig. 1 is the schematic diagram of down-hole electric generating apparatus.Down-hole electric generating apparatus comprises driving pipe nipple 21, connects pipe nipple 22 and motor pipe nipple 23.This device is installed in the drill collar 1, the top of down-hole electric generating apparatus is filter screen 12, impeller pressure cap 2 is equipped with on the top of impeller 3, guide shell 13 is contained between impeller 3 and the drill collar 1, rotatory sealing 5 compresses by gland 4, centralizer 14 is placed on the upper end of plug 15, hitch bar 6 is contained in the upper end of motor driving shaft 7, lower end resilient connection with impeller drive shaft 16, reduced the axiality requirement of system, motor pipe nipple 23 comprises permanent magnet 8 and the stator coil 17 that is immersed in the hydraulic oil, and permanent magnet 8 is fixed on the motor shaft 7, and stator coil 17 is fixed on motor pipe nipple resistance to compression tube 18 inner tube walls.Adopt pressurized spring 11 and floating piston 10 to realize oil mass storage, pressure compensation and sealing effectiveness in the joint 19.Oil filler plug 20 and high pressure plug 9 are installed on the joint 19 simultaneously.
The course of work of this device is: in drilling process, have the filter screen of the drilling fluid of a fixed displacement and pressure by device, big solid in the filtering drilling fluid, filtered drilling fluid promotes the impeller rotation, impeller driving shaft, hitch bar and motor shaft rotation, make the stator coil that is fixed on the permanent magnet on the rotor axis of electric and is installed on the motor pipe nipple inner tube wall interact, produce required electric energy.Device is higher than drilling liquid pressure all the time by hydraulic fluid pressure in pressurized spring and the floating piston holdout device, the hydraulic oil and the drilling fluid that guarantee the rotatory sealing both sides have certain positive differential pressure, thereby prevent that drilling fluid from entering hydraulic fluid chamber, make the rotor stator and the relevant rotary part of motor all be operated in the hydraulic oil, increased the job stability and the reliability of this down-hole electric generating apparatus.
Claims (5)
1, a kind of down-hole electric generating apparatus, it comprises driving pipe nipple (21), connects pipe nipple (22) and motor pipe nipple (23), it is characterized in that: drive pipe nipple impeller drive shaft (16) and be the two-part structure with motor shaft (7), permanent magnet (8) and stator coil (17) all are immersed in the dynamo oil.
2, a kind of down-hole electric generating apparatus as claimed in claim 1 is characterized in that: described two-part structure is that impeller drive shaft (16) connects by hitch bar (6) with motor shaft (7).
3, a kind of down-hole electric generating apparatus as claimed in claim 1 is characterized in that: impeller drive shaft (16) is provided with rotatory sealing (5) near impeller (3) end.
4, a kind of down-hole electric generating apparatus as claimed in claim 1, it is characterized in that: impeller (3) is fixed on the impeller drive shaft (16) that drives pipe nipple (21), inlet at impeller (3) is equipped with filter (12), between impeller (3) and the drill collar (1) guide shell (13) is housed.
5, a kind of down-hole electric generating apparatus as claimed in claim 4 is characterized in that: described impeller (3) is axial-flow type or radial-flow type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201401697U CN201269096Y (en) | 2008-10-15 | 2008-10-15 | Down-hole electric generating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201401697U CN201269096Y (en) | 2008-10-15 | 2008-10-15 | Down-hole electric generating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201269096Y true CN201269096Y (en) | 2009-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201401697U Expired - Lifetime CN201269096Y (en) | 2008-10-15 | 2008-10-15 | Down-hole electric generating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201269096Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383766A (en) * | 2011-10-17 | 2012-03-21 | 西南石油大学 | Self-heating natural gas hydrate preventing device |
| CN102493768A (en) * | 2011-12-02 | 2012-06-13 | 东北石油大学 | High-frequency pulsed jet flow resonance well drilling device and well drilling method thereof |
| CN106870261A (en) * | 2017-03-20 | 2017-06-20 | 江苏大学 | A kind of small-sized hydroelectric power generating apparatus generated electricity using sewer pipe sewage |
| CN109989707A (en) * | 2019-04-23 | 2019-07-09 | 西南石油大学 | Based on the motor-driven double speed PDC drill bit of turbine generation formula |
| CN112127841A (en) * | 2020-10-23 | 2020-12-25 | 陕西昆鹏能源科技有限公司 | Intelligent power generation device for pressure difference in oil-gas well |
-
2008
- 2008-10-15 CN CNU2008201401697U patent/CN201269096Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383766A (en) * | 2011-10-17 | 2012-03-21 | 西南石油大学 | Self-heating natural gas hydrate preventing device |
| CN102383766B (en) * | 2011-10-17 | 2013-11-27 | 西南石油大学 | Self-heating natural gas hydrate preventing device |
| CN102493768A (en) * | 2011-12-02 | 2012-06-13 | 东北石油大学 | High-frequency pulsed jet flow resonance well drilling device and well drilling method thereof |
| CN102493768B (en) * | 2011-12-02 | 2014-05-28 | 东北石油大学 | High-frequency pulsed jet flow resonance well drilling device and well drilling method thereof |
| CN106870261A (en) * | 2017-03-20 | 2017-06-20 | 江苏大学 | A kind of small-sized hydroelectric power generating apparatus generated electricity using sewer pipe sewage |
| CN109989707A (en) * | 2019-04-23 | 2019-07-09 | 西南石油大学 | Based on the motor-driven double speed PDC drill bit of turbine generation formula |
| CN112127841A (en) * | 2020-10-23 | 2020-12-25 | 陕西昆鹏能源科技有限公司 | Intelligent power generation device for pressure difference in oil-gas well |
| CN112127841B (en) * | 2020-10-23 | 2023-03-10 | 陕西昆鹏能源科技有限公司 | Intelligent power generation device for pressure difference in oil-gas well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM + CHEMICAL VICTORY OIL ENGINEERING Effective date: 20150625 Owner name: SINOPEC OILFIELD SERVICE CORPORATION Free format text: FORMER OWNER: WELL-DRILLING TECHNOLOGY INST., SHENGLI PETROLEUM ADMINISTRATION, SINOPEC Effective date: 20150625 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150625 Address after: 100029 Beijing Chaoyang District Hui Xin a No. twelve layer 6 Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Patentee after: Drilling Well Technology Institute, Shengli Petroleum Engineering Co., Ltd., SINOPEC Address before: 257017 No. 236, North Road, Dongying District, Shandong, Dongying Patentee before: Well-Drilling Technology Inst., Shengli Petroleum Administration, SINOPEC |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090708 |
|
| CX01 | Expiry of patent term |