CN109372480B - Movable underground power generation device and method for water injection well - Google Patents
Movable underground power generation device and method for water injection well Download PDFInfo
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- CN109372480B CN109372480B CN201810504266.8A CN201810504266A CN109372480B CN 109372480 B CN109372480 B CN 109372480B CN 201810504266 A CN201810504266 A CN 201810504266A CN 109372480 B CN109372480 B CN 109372480B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000002347 injection Methods 0.000 title claims abstract description 49
- 239000007924 injection Substances 0.000 title claims abstract description 49
- 238000010248 power generation Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000012360 testing method Methods 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000003116 impacting effect Effects 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 12
- 238000005553 drilling Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000002332 oil field water Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B1/00—Engines of impulse type, i.e. turbines with jets of high-velocity liquid impinging on blades or like rotors, e.g. Pelton wheels; Parts or details peculiar thereto
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
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- Geochemistry & Mineralogy (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a movable underground power generation device and a movable underground power generation method for a water injection well, wherein the device comprises an outer pipe and a power generation unit, the power generation unit is positioned in an inner cavity of the outer pipe, a spring piece is arranged on the inner wall of the left side of the outer pipe, and the spring piece elastically extrudes the power generation unit on the inner wall of the right side of the outer pipe under the normal state. The generator set comprises at least one group, and the two ends of the generator set are respectively an upper guide body and a lower guide body. The upper guide body is provided with a right lower inclined plane, and the lower guide body is provided with a left lower inclined plane. The upper guide body is provided with a radial upper guide body through hole, and the lower guide body is provided with a radial lower guide body through hole. The outer pipe is provided with an upper supporting rod and a lower supporting rod which radially face the inner cavity of the outer pipe, wherein the upper supporting rod is inserted into the through hole of the upper guide body, and the lower supporting rod is inserted into the through hole of the lower guide body. And the left side surface of the generator set is provided with a water-stop sheet. The invention can provide long-term and stable power supply for the underground intelligent water injection tool.
Description
Technical Field
The invention relates to the technical field of oilfield water injection development, in particular to a movable underground power generation device and method for a water injection well.
Background
In the field of oilfield water injection development, stratified water injection has become a main means for improving the water injection development effect, the development of the stratified water injection technology successively goes through four stages, the first stage is a fixed stratified water injection technology, a water nozzle is fixed, and the water injection amount cannot be adjusted; the second stage is a movable type layered water injection technology, and the movable water nozzle can be tested and allocated in a mode of throwing and fishing the water nozzle for multiple times; the third stage is a measurement and regulation integrated layered water injection technology, a water nozzle is arranged in a water distributor, and the measurement and regulation instruments are only needed to be put into the water distributor for completing the measurement and regulation work of each layer underground, and the technology is also a technology mainly applied and popularized in various oil fields at present; the fourth stage is a wireless intelligent layered water injection technology, underground real-time wireless measurement and adjustment are realized through an underground intelligent water distributor, complex and complicated workloads such as underground dropping, fishing, testing and adjustment are eliminated, underground real-time monitoring and dynamic adjustment are realized, and the technology is still in research and development and small-scale test stages at present.
The wireless intelligent layered water injection technology requires a long-term stable power supply system regardless of underground real-time monitoring and allocation or wireless data transmission. The underground circuit system is powered by a self-contained battery, is limited by the size of an underground space, and has smaller battery volume and battery capacity, so that higher requirements are put forward on the low-power-consumption design of the underground circuit system; secondly, in the battery power supply state, the underground real-time monitoring, intelligent allocation and data acquisition and real-time transmission can generate continuous high energy consumption, and the service life of the battery can be greatly influenced; the underground power supply battery is a disposable consumable product, cannot be charged and utilized circularly, and the frequent replacement of the battery means huge operation and production cost. At present, an energy storage battery is mature, the hydroelectric generation technology is relatively mature, and an oil field water injection well has a source of power generation power for stable injection of fluid, so that long-term and stable power guarantee can be provided for wireless intelligent layered water injection through the underground self-power generation technology of the water injection well.
Through searching, application number: 200810114632.5, published japanese patent application No. 2012-01-11 discloses a downhole power generation device, which is disposed in a downhole drilling system, wherein the drilling system includes a driving shaft for driving a drill bit to rotate and a guide support rotary sleeve sleeved outside the driving shaft, the downhole power generation device includes a generator, the generator is disposed in a space between the driving shaft and the guide support rotary sleeve and has a machine body and a rotor shaft, wherein the machine body of the generator is fixedly disposed on the guide support rotary sleeve, and a transmission mechanism is connected between the rotor shaft of the generator and the driving shaft of the drilling system and is used for transmitting the rotation power of the driving shaft to the rotor shaft. The underground power generation device can not only provide high-power electric energy in an underground drilling system, but also work without time limitation in the underground along with the drilling operation.
Although some downhole power generation devices are disclosed, the same technical scheme as the present invention is not disclosed in the publications, and many technical problems to be solved by the present invention cannot be solved by the searched publications. While the above publications do not suggest themselves to the present invention.
Disclosure of Invention
The invention aims to provide a movable underground power generation device and method for a water injection well, which can provide long-term and stable power supplement for an underground intelligent water injection tool. The opening and closing of the central water injection channel are realized in a radial moving mode, the passing of a test instrument can be met, and the normal production test of a water injection well cannot be influenced.
In order to achieve the purpose, the invention adopts the following technical scheme that the movable underground power generation device for the water injection well comprises an outer pipe and a power generation unit, wherein the power generation unit is positioned in an inner cavity of the outer pipe, a spring piece is arranged on the inner wall of the left side of the outer pipe, and the spring piece elastically extrudes the power generation unit on the inner wall of the right side of the outer pipe under the normal state.
The generator set comprises at least one group, and the two ends of the generator set are respectively an upper guide body and a lower guide body.
The upper guide body is provided with a right lower inclined plane, and the lower guide body is provided with a left lower inclined plane.
The upper guide body is provided with a radial upper guide body through hole, and the lower guide body is provided with a radial lower guide body through hole.
The outer pipe is provided with an upper supporting rod and a lower supporting rod which radially face the inner cavity of the outer pipe, wherein the upper supporting rod is inserted into the through hole of the upper guide body, and the lower supporting rod is inserted into the through hole of the lower guide body.
The left side surface of the generator set is provided with a water-stop sheet, the upper end of the water-stop sheet is higher than the generator set and extends to the upper port of the inner cavity of the outer pipe, and the lower end of the water-stop sheet is lower than the generator set and extends to the lower port of the inner cavity of the outer pipe; when the spring piece elastically extrudes the generator set on the inner wall of the right side of the outer pipe, the center line of the generator set is consistent with the center lines of the inner cavities of the upper joint and the lower joint.
The upper end of the outer pipe is connected with the upper joint, and the lower end of the outer pipe is connected with the lower joint.
In order to achieve the purpose, the invention adopts the following technical scheme that a generator set is arranged in an underground outer pipe to form an underground generating set, the upper part and the lower part of the underground generating set are both connected with an oil pipe, the generator set is centered to a central flow channel of a short-section pipe column under the thrust action of a spring piece, water coming from the oil pipe impacts blades of the generator set to rotate when water is injected, the generator set starts to work, the fluid kinetic energy is converted into electric energy to supply power to underground intelligent water injection devices of all stages, and after impacting the impeller of the generator of all stages, the water flows downwards from an annular flow channel and flows into a water injection central channel again, so that real-time power generation is realized in the water injection process.
When a test instrument needs to be put in, the gravity of the instrument acts on the inclined plane of the guide body on the generator set, the support spring is compressed and attached to the edge, the generator set is synchronously pushed back to move to one side of the encapsulation short section pipe column to be attached to the compression spring, a channel for passing the instrument through the center is reserved at the moment, the instrument is guaranteed to smoothly pass through the channel, and the instrument pushes the generator set to radially move to the center position through the rear spring piece to continue generating electricity; when the instrument is lifted upwards, the steel wire drives the instrument to push the inclined plane of the guide body under the generator set, the support spring is compressed and attached to the edge, the generator set is synchronously pushed back to move to one side of the encapsulation short section pipe column to be attached to the compression spring, a channel of the instrument is reserved at the center, and the instrument is guaranteed to pass through smoothly.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention designs a mobile underground power generation technology according to the characteristics of limited space of a water injection well, unidirectional water injection and passing of a test instrument, and provides continuous power supply for an underground intelligent injection allocation device of the water injection well.
2. The power generation method and the device can fully utilize water from the water injection well, provide maximum hydrodynamic force for the generator set and ensure that the power generation power meets the target requirement.
3. The device disclosed by the invention realizes the opening and closing of the central water injection channel in a radial movement mode, can meet the passing of a test instrument, and cannot influence the normal production test of a water injection well.
4. The invention adopts an independent generator set, the generators can be randomly disassembled, assembled and replaced, and a plurality of generators can be connected in series for use, thereby meeting the requirements of different power generation powers.
5. The device has the advantages of simple and compact structure, small influence caused by the size limitation of the shaft, reliable working performance, simple installation and convenient use.
Drawings
FIG. 1 is a schematic structural view of a movable downhole power generation device for a water injection well according to the present invention;
FIG. 2 is a schematic view of the present invention showing the generator set squeezed to one side after being lowered into the instrument;
fig. 3 is a schematic diagram of a generator set structure.
In the figure: the device comprises an upper joint 1, a water-stop sheet 2, an upper supporting rod 3, a spring piece 4, an outer tube 5, a lower supporting rod 6, a lower joint 7, a generator set 8, an upper guide body through hole 9, a lower guide body through hole 10 and an instrument 11.
Detailed Description
The detailed description and technical contents of the present invention are described below with reference to the accompanying drawings, which are, however, for reference and illustration purposes only and are not intended to limit the present invention.
According to fig. 1, 2 and 3, the movable underground power generation device for the water injection well comprises an outer pipe 5 and a power generation unit 8, wherein the power generation unit is located in an inner cavity of the outer pipe, a spring piece 4 is installed on the inner wall of the left side of the outer pipe, and the spring piece elastically extrudes the power generation unit on the inner wall of the right side of the outer pipe in a normal state.
The generator set comprises at least one group, and the two ends of the generator set are respectively an upper guide body and a lower guide body. The upper guide body is provided with a right lower inclined plane, and the lower guide body is provided with a left lower inclined plane. The upper guide body is provided with a radial upper guide body through hole 9, and the lower guide body is provided with a radial lower guide body through hole 10.
And the outer pipe is provided with an upper supporting rod 3 and a lower supporting rod 6 which radially face the inner cavity of the outer pipe, wherein the upper supporting rod is inserted into the through hole of the upper guide body, and the lower supporting rod is inserted into the through hole of the lower guide body.
The left side surface of the generator set is provided with a water-stop sheet 2, the upper end of the water-stop sheet is higher than the generator set and extends to the upper port of the inner cavity of the outer pipe, and the lower end of the water-stop sheet is lower than the generator set and extends to the lower port of the inner cavity of the outer pipe; when the spring piece elastically extrudes the generator set on the inner wall of the right side of the outer pipe, the center line of the generator set is consistent with the center lines of the inner cavities of the upper joint and the lower joint. The water-stop sheet welds in generating set one side, blocks that the incoming water gets into the side opening that the spring leaf is located, and generating set can follow bracing piece radial movement, and generating set's removal route has been injectd to the bracing piece, and the spring leaf can be withdrawed and pop out under the exogenic action.
The upper end of the outer pipe is connected with an upper joint 1, and the lower end of the outer pipe is connected with a lower joint 7.
The upper end of the upper joint 1 is connected with an oil pipe, the lower end of the upper joint is connected with an outer pipe 5, the lower end of the outer pipe is connected with a lower joint 7, the lower end of the lower joint is connected with the oil pipe, and a spring piece 4 and a generator set 8 are arranged in the outer pipe; go up bracing piece 3, lower bracing piece 6 respectively with the outer union coupling back, insert on the generating set in guide body through-hole and the lower guide body through-hole, hang generating set at inside center channel, water-stop sheet 2 blocks and locates at the hole inlet that deviates from, guarantees that the incoming water enters into generating set place space.
When normal water injection, oil pipe water inflow is blocked by the water-stop sheet, and all enter the main flow channel, directly impact the generator impeller to provide power generation, the generator set starts to work, fluid kinetic energy is converted into electric energy to charge the underground energy storage battery, and the fluid flows into the water injection channel again after flowing through the generator set.
When the instrument is required to pass through, the generator set supported by the spring is pushed to one side of the short section by means of the gravity of the instrument, the requirement of the inner aperture through which the instrument passes is met, the hydraulic generator set is radially pushed to the central water passing channel by the instrument through the rear spring piece, when the instrument is lifted, the hydraulic generator set is pushed to be retracted laterally by means of the upward pulling force of the instrument, and the central channel is opened to enable the instrument to pass through smoothly.
The generator set 8 is of an independent structure, can be randomly disassembled, installed and replaced, and can also be used in a plurality of series lengthening modes, so that the requirements of different generated power sizes are met. The water injection channel can meet the passing of a test instrument and cannot influence the normal production test of the water injection well. The generator set 8 is a conventional hydroelectric generator in the field, and is the prior art and can be directly applied.
In a word, a portable underground power generation facility of water injection well adopts the radial movement mode to realize opening and closing of central water injection passageway, can satisfy passing through of test instrument, can not influence the normal production test of water injection well, and the generator can be dismantled, installed, change at will, also can a plurality of series connection uses, satisfies different generated power's demand.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, but rather should be construed in all respects as illustrative and not restrictive.
Claims (3)
1. A movable underground power generation device for a water injection well comprises an outer pipe and a power generation unit, and is characterized in that the power generation unit is positioned in an inner cavity of the outer pipe, a spring piece is arranged on the inner wall of the left side of the outer pipe, and the spring piece elastically extrudes the power generation unit on the inner wall of the right side of the outer pipe under a normal state; the device comprises at least one group of generator set, wherein an upper guide body and a lower guide body are respectively arranged at two ends of the generator set; the upper guide body is provided with a radial upper guide body through hole, and the lower guide body is provided with a radial lower guide body through hole; the outer pipe is provided with an upper supporting rod and a lower supporting rod which radially face the inner cavity of the outer pipe, wherein the upper supporting rod is inserted into the through hole of the upper guide body, and the lower supporting rod is inserted into the through hole of the lower guide body; the upper end of the outer pipe is connected with an upper joint, and the lower end of the outer pipe is connected with a lower joint; the left side surface of the generator set is provided with a water-stop sheet, the upper end of the water-stop sheet is higher than the generator set and extends to the upper port of the inner cavity of the outer pipe, and the lower end of the water-stop sheet is lower than the generator set and extends to the lower port of the inner cavity of the outer pipe; when the spring piece elastically extrudes the generator set on the inner wall of the right side of the outer pipe, the center line of the generator set is consistent with the center lines of the inner cavities of the upper joint and the lower joint.
2. The movable water injection well downhole power generation device of claim 1, wherein the upper guide body is provided with a right lower inclined surface, and the lower guide body is provided with a left lower inclined surface.
3. The power generation method of the movable downhole power generation device of the water injection well of claim 2 is characterized in that a generator set is installed in an underground outer pipe to form the downhole power generation device, the upper part and the lower part of the downhole power generation device are both connected with an oil pipe, the generator set is centered to a central flow channel of a sealing short section pipe column under the thrust action of a spring piece, water coming from the oil pipe impacts blades of the generator set to rotate when water is injected, the generator set starts to work, fluid kinetic energy is converted into electric energy to supply power to each level of intelligent water injection device in the well, and after impacting each level of generator impeller, the water flows downwards from an annular flow channel and flows into a water injection central channel again, so that real-time;
when a test instrument needs to be put in, the gravity of the instrument acts on the inclined plane of the guide body on the generator set, the support spring is compressed and attached to the edge, the generator set is synchronously pushed back to move to one side of the encapsulation short section pipe column to be attached to the compression spring, a channel for passing the instrument through the center is reserved at the moment, the instrument is guaranteed to smoothly pass through the channel, and the instrument pushes the generator set to radially move to the center position through the rear spring piece to continue generating electricity; when the instrument is lifted upwards, the steel wire drives the instrument to push the inclined plane of the guide body under the generator set, the support spring is compressed and attached to the edge, the generator set is synchronously pushed back to move to one side of the encapsulation short section pipe column to be attached to the compression spring, a channel of the instrument is reserved at the center, and the instrument is guaranteed to pass through smoothly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810504266.8A CN109372480B (en) | 2018-05-23 | 2018-05-23 | Movable underground power generation device and method for water injection well |
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| CN201810504266.8A CN109372480B (en) | 2018-05-23 | 2018-05-23 | Movable underground power generation device and method for water injection well |
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| CN109372480B true CN109372480B (en) | 2021-03-09 |
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| CN110318730B (en) * | 2019-06-25 | 2023-05-02 | 中国石油化工股份有限公司 | High-freedom-degree multifunctional well instrument test bed |
| CN112302855B (en) * | 2020-11-02 | 2022-02-15 | 长江大学 | Underground power generation device and power generation method |
| CN113847034A (en) * | 2021-09-26 | 2021-12-28 | 内蒙古华威矿业工程有限责任公司 | Energy-saving transportation mining method for open pit coal mine |
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| CN203547709U (en) * | 2013-10-08 | 2014-04-16 | 中国石油化工股份有限公司 | Filtering type collecting flow meter |
| US9982205B2 (en) * | 2015-08-03 | 2018-05-29 | Craig Pichach | Subterranean gasification system and method |
| CN205743840U (en) * | 2016-05-16 | 2016-11-30 | 中国石油天然气股份有限公司 | A kind of automatically controlled descaler being applicable to water injection well in oil fields and scale removal tubing string thereof |
| CN106761455B (en) * | 2016-12-09 | 2018-08-17 | 中国石油天然气股份有限公司 | The self power generation of preset cable shaft underground and cable butting technique |
| CN106499387B (en) * | 2016-12-21 | 2019-04-16 | 西南石油大学 | A kind of active specific retention measuring device |
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