CN116950566A - Self-generating near-bit geosteering tool - Google Patents
Self-generating near-bit geosteering tool Download PDFInfo
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- CN116950566A CN116950566A CN202311207893.2A CN202311207893A CN116950566A CN 116950566 A CN116950566 A CN 116950566A CN 202311207893 A CN202311207893 A CN 202311207893A CN 116950566 A CN116950566 A CN 116950566A
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- measurement
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- 238000005259 measurement Methods 0.000 claims description 73
- 238000007789 sealing Methods 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 13
- 238000010248 power generation Methods 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 24
- 230000008569 process Effects 0.000 description 22
- 238000005553 drilling Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000002310 elbow joint Anatomy 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Classifications
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0085—Adaptations of electric power generating means for use in boreholes
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
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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
- F03B13/02—Adaptations for drilling wells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a self-generating near-bit geosteering tool, which comprises a guide column, wherein one end of the guide column is connected with a connecting piece, the other end of the guide column is connected with a bit mounting seat, an angle measuring device is arranged in the guide column and used for determining the current initial angle of a near-bit by acquiring the current position, a guide calibrating device is also arranged in the bit mounting seat and used for adjusting the initial angle of the near-bit; wherein, the drill bit mount pad is including setting up the mount pad body inside the guide post other end, and the inside drill bit groove that is provided with of mount pad body, the width in drill bit groove is greater than the width of nearly drill bit, and the inside center department of drill bit groove is provided with the guide way of V type, and guide way internally mounted has the locating lever, and spherical connecting piece is still installed to the inside spherical connecting piece of still installing of mount pad body, and seal assembly is installed to drill bit tank bottom end. The invention can guide the near drill bit and accurately adjust the angle, and can meet the use requirements of various complex environments.
Description
Technical Field
The invention belongs to the technical field of drilling equipment, and particularly relates to a self-generating near-bit geosteering tool.
Background
In drilling engineering such as petroleum, mine and geological exploration, the drilling track is required to be more accurately drilled according to engineering design requirements, stratum information is mastered timely and accurately, a thin oil layer is identified, drilling efficiency is improved, and the stratum information is transmitted to the ground in real time. Thus, the engineering technicians can know the change of the well track and the stratum information in time.
The steering drilling technology sequentially goes through two development stages of sliding steering drilling and rotating automatic steering drilling, the sliding steering drilling adopts an elbow joint straightening motor, and the well deviation and the azimuth are measured by a near-bit and a conventional measurement while drilling instrument to alternately steer in a sliding drilling and rotating drilling mode, so that the steering method is a steering mode which is more widely adopted at the present stage. The rotary automatic guiding drilling system integrates the functions of drilling machine, electricity and liquid and can adapt to the new automatic drilling technology of the severe underground environment.
The main application of the near-bit geosteering tool in the industry is to measure the near-bit well inclination angle through a triaxial acceleration sensor and a triaxial magnetometer, and a directional well engineer can refer to the well inclination near the current bit. Meanwhile, the near-bit provides azimuth gamma measurement, and because the measuring point is near to the bit position, a geosteering engineer can timely adjust the trend of a tool earlier according to stratum azimuth gamma information measured by the near-bit, and provide timely and accurate instructions for accurate middle-target, but most of adjustment of the current near-bit measurement instrument while drilling in the actual use process is carried out detection angle from the outside and corresponding adjustment, and because the bit is in the rotating process, the condition of inaccurate detection results is easy to occur, and the final drilling measurement result is affected.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a self-generating near-bit geosteering tool for solving the problem of inaccurate adjustment caused by inaccurate detection of the inclination angle in the prior art.
To achieve the above and other related objects, the present invention provides a self-generating near-bit geosteering tool, comprising a guide post, one end of the guide post is connected with a connecting piece, the other end of the guide post is connected with a bit mounting seat, the bit mounting seat is used for mounting a near-bit, an angle measuring device is mounted in the guide post, the angle measuring device is used for determining the current initial angle of the near-bit by acquiring the current position, and a guide calibration device is also mounted in the bit mounting seat and is used for adjusting the initial angle of the near-bit;
the drill bit installing seat comprises an installing seat body arranged in the other end of the guide post, a drill bit groove is formed in the installing seat body, the width of the drill bit groove is larger than that of the near drill bit, a V-shaped guide groove is formed in the center of the inside of the drill bit groove, a positioning rod is arranged in the guide groove, a spherical connecting piece is further arranged in the installing seat body, the positioning rod is hinged to the spherical connecting piece so as to correspondingly deform to adapt to the angle of the near drill bit when the angle of the near drill bit is adjusted, the near drill bit is inserted into the drill bit groove and then is inserted into the positioning rod to be fixed together, the guide calibrating device is arranged on the inner wall of the drill bit groove so as to respectively adjust the angle of the near drill bit from two ends, and a sealing assembly is arranged at the bottom end of the drill bit groove and used for keeping the drill bit groove in a sealing state when the angle of the near drill bit is changed.
In an embodiment of the invention, the guiding calibration device comprises a locking ring installed inside the installation seat body, the near drill bit is arranged inside the locking ring, a plurality of rotating seats are uniformly arranged on the locking ring, flexible metal plates are hinged outside the rotating seats, the outer walls of two ends of the flexible metal plates are respectively connected with a first electric push rod and a second electric push rod, the outer ends of the first electric push rod and the second electric push rod are inserted into the installation seat body and are connected with a bearing seat, the vertical distance between the first electric push rod and the rotating seat is larger than the vertical distance between the second electric push rod and the rotating seat, and the ends of the first electric push rod and the second electric push rod penetrate through the flexible metal plates and are connected with friction pads, and the friction pads are attached to the surfaces of the near drill bit.
In an embodiment of the present invention, a limiting head is further installed at an end of the rotating seat, and a limiting groove matched with the limiting head is provided on a surface of the near-bit.
In an embodiment of the present invention, the number of the locking rings is at least three, and the intervals between two adjacent locking rings sequentially increase from top to bottom.
In an embodiment of the invention, the sealing assembly comprises a sealing seat installed at the bottom end of the installation seat body, a bending metal plate is connected to the outer wall of the sealing seat, an annular sealing pad is installed on the outer wall of the drill bit, the end part of the annular sealing pad is fixedly connected with the bending metal plate, the inside of the annular sealing pad is of a hollow structure, a plurality of bending pipes are arranged inside the annular sealing pad, pressure release balls are connected to the surfaces of the bending pipes in a conducting manner, and the pressure release balls are positioned inside the drill bit groove to release pressure when being pressed, and the bending pipes are of elastic structures.
In an embodiment of the invention, the angle measuring device comprises an upper measuring ring installed inside the guide post and a lower measuring ring installed inside the installation seat body, wherein the upper measuring ring and the inner wall of the lower measuring ring are both provided with angle measuring pieces through the installation ring, and the angle measuring pieces are used for measuring the current angle of the near drill bit.
In an embodiment of the present invention, the angle measurement member includes a plurality of measurement seats uniformly mounted on the mounting ring, a sliding rail is disposed on the mounting ring, the measurement seats are driven by a control motor to rotate around the mounting ring along the sliding rail, a reference column and a measurement column are mounted inside the measurement seats, an upper fixing column and a lower fixing column are mounted inside the measurement seats, a central point connecting line of the upper fixing column and the lower fixing column is parallel to an axial direction of the guide column, one end of the reference column is rotationally connected with the upper fixing column, the other end of the reference column is connected with a balancing weight, one end of the measurement column is fixedly connected with the upper fixing column, the other end of the measurement column is fixedly connected with the lower fixing column, the measurement column and the inside of the reference column are hollow structures, a measurement liquid is mounted inside the measurement column and the inside of the reference column, and when the guide column is in a vertical state, the measurement column and the reference column are completely coincident, and the angle sensor is disposed inside the measurement column and the reference column.
In an embodiment of the present invention, an angle measuring instrument is installed on the upper fixing column, the angle measuring instrument is used for measuring an included angle between the measuring column and the reference column after the measuring column and the reference column are separated, a traction rope is further connected between the measuring column and the reference column, scale marks are arranged on the traction rope, scale marks are arranged on the measuring column and the reference column, and an optical sensor is installed inside the installation ring to detect the scale marks on the measuring column, the reference column and the traction rope through the optical sensor.
In an embodiment of the invention, the angle measuring part further comprises a motor controller, and the motor controller is used for controlling the control motor to adjust the positions of different measuring seats on the mounting ring.
In an embodiment of the present invention, a power generation device is further installed inside the guide post, the power generation device includes a plurality of guide plates uniformly embedded outside the guide post, a guide groove is provided inside the guide plates, a plurality of parallel rotating discs are installed inside the guide grooves, a rotating shaft is connected to the center of the rotating discs, the rotating shaft is inserted inside the guide post and is connected with an electromagnetic coil, the rotating shaft is rotatably connected with the guide post through a bearing, a cylindrical magnet is further installed inside the guide post, and the electromagnetic coil is disposed inside the cylindrical magnet to generate power through rotation of the electromagnetic coil around the cylindrical magnet, so as to supply power to the guide tool.
In an embodiment of the present invention, the two ends of the guiding groove are both provided with screens, and the diameter of the opening at the two ends of the guiding groove is larger than the width of the middle part of the guiding groove.
As described above, the self-generating near-bit geosteering tool of the present invention has the following beneficial effects:
through setting up angle measurement device in the guide post inside, at near drill bit in the underground advancing process, measure the angle of guide post and near drill bit respectively through angle measurement device in order to obtain the accurate angle of current position, in order to obtain accurate well deviation angle at the drilling in-process, and utilize the direction calibrating device to carry out quick adjustment to near drill bit from inside, not only can effectively reduce the influence of external pressure to near drill bit adjustment process, moreover from inside adjustment make near drill bit's angle adjustment more accurate, improve near drill bit angle adjustment's accuracy, the mode power supply of self-generating is adopted to whole device simultaneously, can provide the energy through power generation facility when internal power supply is not enough, thereby provide reserve electric power for whole device, effectively prolonged the exploration distance and the live time of whole device, can satisfy the user demand of various complex environment.
Drawings
FIG. 1 shows a schematic diagram of a self-generating near-bit geosteering tool of the present invention.
Fig. 2 shows a schematic diagram of the steering calibration device in the self-generating near-bit geosteering tool of the present invention.
FIG. 3 is a schematic cross-sectional view of a locking ring in a self-generating near-bit geosteering tool of the present invention.
Fig. 4 shows a schematic of the closure assembly of the self-generating near-bit geosteering tool of the present invention.
FIG. 5 is a schematic cross-sectional view of an annular seal pad in a self-generating near-bit geosteering tool of the present invention.
Fig. 6 shows a schematic diagram of the angle measurement device in the self-generating near-bit geosteering tool of the present invention.
FIG. 7 is a schematic view of the mounting structure of a measurement seat in a self-generating near-bit geosteering tool of the present invention.
FIG. 8 is a schematic diagram of the internal structure of a measurement seat in a self-generating near-bit geosteering tool of the present invention.
Fig. 9 shows a schematic of the structure of the power generation device in the self-generating near-bit geosteering tool of the present invention.
Description of the reference numerals
1. A guide post;
2. a connecting piece;
3. a drill bit mounting seat;
4. a near bit;
5. an angle measuring device;
6. a guide calibration device;
7. a closure assembly;
8. an angle measuring member;
9. a power generation device;
301. a mounting seat body;
302. a drill bit slot;
303. a guide groove;
304. a positioning rod;
305. a spherical connector;
501. a measuring ring is arranged on the upper part;
502. a lower measuring ring;
503. a mounting ring;
601. a locking ring;
602. a rotating seat;
603. a flexible metal plate;
604. a first electric push rod;
605. a second electric push rod;
606. a pressure-bearing seat;
607. a friction pad;
608. a positioning head;
609. a limit groove;
701. a sealing seat;
702. bending the metal plate;
703. an annular closing pad;
704. bending the tube;
705. a pressure relief ball;
801. a measuring seat;
802. a reference column;
803. a measuring column;
804. an upper fixing column;
805. a lower fixing column;
806. balancing weight;
807. a traction rope;
901. a deflector;
902. a diversion trench;
903. a rotating disc;
904. a rotation shaft;
905. an electromagnetic coil;
906. a bearing;
907. a cylindrical magnet;
908. and (3) screening.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
According to the self-power generation type near-bit geosteering tool, the angle measuring device is arranged in the guide post, the angles of the guide post and the near-bit are respectively measured through the angle measuring device in the underground advancing process of the near-bit so as to obtain the accurate angle of the current position, and the near-bit is quickly adjusted from the inside by utilizing the guide calibrating device, so that the influence of external pressure on the near-bit adjusting process can be effectively reduced, the angle of the near-bit is adjusted more accurately from the inside, the accuracy of near-bit angle adjustment is improved, meanwhile, the whole device is powered in a self-power generation mode, and energy can be provided for the whole device through the power generating device when the internal power supply is insufficient, so that the exploration distance and the service time of the whole device are effectively prolonged, and the use requirements of various complex environments can be met.
As shown in fig. 1 to 9, in one embodiment, the self-generating near-bit geosteering tool of the present invention includes a guide post 1, one end of the guide post 1 is connected with a connecting piece 2, the other end of the guide post 1 is connected with a bit mount 3, the bit mount 3 is used for mounting a near-bit 4, an angle measuring device 5 is installed inside the guide post 1, the angle measuring device 5 is used for determining a current initial angle of the near-bit 4 by acquiring a current position, and a guide calibration device 6 is also installed inside the bit mount 3, and the guide calibration device 6 is used for adjusting the initial angle of the near-bit 4;
the drill bit mounting seat 3 comprises a mounting seat body 301 arranged in the other end of the guide post 1, a drill bit groove 302 is formed in the mounting seat body 301, the width of the drill bit groove 302 is larger than that of the near drill bit 4, a V-shaped guide groove 303 is formed in the center of the inside of the drill bit groove 302, a positioning rod 304 is mounted in the guide groove 303, a spherical connecting piece 305 is further mounted in the mounting seat body 301, the positioning rod 304 is hinged with the spherical connecting piece 305 so as to correspondingly deform to adapt to the angle of the near drill bit 4 when the angle of the near drill bit 4 is adjusted, the near drill bit 4 is inserted into the drill bit groove 302 and then is fixed with the positioning rod 304, the guide calibration device 6 is mounted on the inner wall of the drill bit groove 302 so as to respectively adjust the angle of the near drill bit 4 from two ends, and a sealing assembly 7 is mounted at the bottom end of the drill bit groove 302, and the sealing assembly 7 is used for keeping the drill bit groove 302 in a sealing state when the angle of the near drill bit 4 is changed.
In this embodiment, the guide post 1 is connected with external equipment through the connecting piece 2 to provide power for the near-bit 4, and the near-bit 4 is connected with the guide post 1 through the bit mounting seat 3, in the advancing process of the near-bit 4, the angle of the near-bit 4 is measured through the angle measuring device 5 in the guide post 1, and the angle of the near-bit 4 is adjusted according to the measured angle, so that the near-bit 4 can be always at a correct angle in the working process, in the adjusting process, the near-bit 4 is guided and positioned by utilizing the positioning rod 304 in the V-shaped wire groove 303, so that the position of the near-bit 4 cannot deviate greatly, the near-bit 4 is conveniently adjusted, the accuracy and stability of the working process of the near-bit 4 are improved, and the sealing component 7 seals and protects the near-bit 4 in the adjusting process, so that the near-bit 4 is always in a sealed state and is not easy to be influenced by the external environment, and plays a protective role in protecting the near-bit 4.
In an embodiment of the present invention, referring to fig. 6, 7 and 8, the angle measuring device 5 includes an upper measuring ring 501 installed inside the guide post 1 and the lower measuring ring 502 installed inside the installation seat body 301, the inner walls of the upper measuring ring 501 and the lower measuring ring 502 are both installed with an angle measuring member 8 through the installation ring 503, the angle measuring member 8 is used for measuring the current angle of the near bit 4, the angle measuring member 8 includes a plurality of measuring seats 801 uniformly installed on the installation ring 503, a sliding rail is provided on the installation ring 503, the measuring seats 801 are driven by a control motor to rotate around the installation ring 503 along the sliding rail, a reference post 802 and a measuring post 803 are installed inside the measuring seats 801, a center point connecting line of the upper fixing post 804 and the lower fixing post 805 is parallel to the axial direction of the guide post 1, one end of the reference post 802 is connected with the upper fixing post 802 in a rotation connection, the other end of the reference post 802 is connected with the measuring post 803 in a full angle sensor 803, and the other end of the reference post 803 is connected with the sensor 803, and the sensor 803 is completely coincides with the inner end of the sensor 803, and the sensor 803 is completely inside the sensor 803, and the sensor is completely coincides with the sensor 803.
In this embodiment, when the near-bit 4 travels in the underground exploration, the angle measuring device 5 performs angle measurement through the angle measuring piece 8 on the upper measuring ring 501 in the guide post 1 and the angle measuring piece 8 on the lower measuring ring 502 in the mounting base body 301, so as to calculate the accurate angle of the current position of the near-bit 4 according to the angles measured by the two angle measuring devices, thereby reducing the measurement error possibly caused by local measurement and improving the accuracy of the measurement result.
Specifically, during the working process of the near-bit 4, the angle measuring piece 8 is respectively installed inside the guide post 1 and the installation seat body 301 through the installation ring 503, so that the angle when the guide post 1 and the installation seat body 301 are used as references is measured through the angle measuring piece 8, and the angle of the current near-bit 4 is obtained by taking the average value of the two measurement results.
In the specific measurement, since the angle of the near-bit 4 is changed in the running process, the whole guiding tool is adjusted accordingly, and the measuring seat 801 positioned in the mounting ring 503 is used for angle measurement, taking the angle measuring piece 8 in the guiding column 1 as an example, during measurement, the measuring seat 801 is driven to rotate along the mounting ring 503 by controlling the motor so as to adjust the position of the measuring seat 801, because the two ends of the measuring column 803 in the measuring seat 801 are respectively connected with the upper fixing column 804 and the lower fixing column 805, the measuring column 803 is always positioned at the same angle with the whole guiding column 1, when the near-bit 4 is in a vertical state, the reference column 802 and the measuring column 803 are parallel, one end of the reference column 802 is rotationally connected with the upper fixing column 804, and the other end of the reference column 802 is connected with the balancing weight 806, when the guiding column 1 is changed along with the near-bit 4, under the action of the balancing weight 806, the included angle is always generated between the reference column 802 and the measuring column 803, and the included angle between the reference column 802 and the measuring column 803 is calculated by the angle sensor so as to obtain the angle when the guiding column 1 is used as a reference. Similarly, the angle with the mount body 301 as a reference is obtained by measuring the measuring seat 801, and then the accurate angle can be obtained by measuring the average value between the two angles.
It should be noted that, in an embodiment of the present invention, the angle measurement member 8 further includes a motor controller, where the motor controller is configured to control the control motor to adjust the positions of different measurement seats 801 on the mounting ring 503, and control the control motor through the motor controller in the process of performing angle measurement on the measurement seat 801, so that the control motor drives the measurement seat 801 to move along the sliding rail to adjust the position of the measurement seat 801 on the mounting ring 503, so that the measurement seat 801 can perform angle measurement on different positions on the mounting ring 503, and the problem of inaccurate measurement result caused by long-time fixed position measurement is avoided.
Further, in the measurement process, the average value of the measurement results of the plurality of measurement seats 801 on each mounting ring 503 may be used as the measurement result of the current angle measurement member 8, so as to ensure the accuracy of the measurement result, which is not described herein.
In an embodiment of the present invention, an angle measuring device is mounted on the upper fixing post 804, the angle measuring device is used for measuring an included angle between the measuring post 803 and the reference post 802 after the measuring post 803 and the reference post 802 are separated, a hauling rope 807 is further connected between the measuring post 803 and the reference post 802, scale marks are arranged on the hauling rope 807, scale marks are arranged on the measuring post 803 and the reference post 802, and an optical sensor is mounted inside the mounting ring 503 to detect the scale marks on the measuring post 803, the reference post 802 and the hauling rope 807 through the optical sensor.
In order to ensure the accuracy of the measurement result, after the corresponding angle result is measured on the measurement seat 801, the measurement column 803, the reference column 802 and the scale mark on the traction rope 807 are detected by using the optical sensor through the scale mark of the traction rope 807 between the reference column 802 and the measurement column 803, so that the included angle between the reference column 802 and the measurement column 803 is calculated according to the Pythagorean theorem, and the measured angle is checked according to the measured result, thereby ensuring the accuracy of the angle measurement result.
In still another embodiment of the present invention, referring to fig. 2 and 3, the guide calibration device 6 includes a locking ring 601 installed inside the mounting base body 301, the near drill bit 4 is disposed inside the locking ring 601, a plurality of rotating bases 602 are uniformly disposed on the locking ring 601, a flexible metal plate 603 is hinged outside the rotating bases 602, two outer walls at two ends of the flexible metal plate 603 are respectively connected with a first electric push rod 604 and a second electric push rod 605, outer ends of the first electric push rod 604 and the second electric push rod 605 are inserted into the mounting base body 301 and are connected with a pressure-bearing base 606, a vertical distance between the first electric push rod 604 and the rotating bases 602 is greater than a vertical distance between the second electric push rod 605 and the rotating bases 602, ends of the first electric push rod 604 and the second electric push rod 605 penetrate through the flexible metal plate 603 and are connected with friction pads, the friction pads 607 are together with surfaces of the near drill bit 4, ends of the rotating bases 602 are further provided with a head 608, and the head 607 is fitted with a head 608, and the head 608 is fitted with a limit groove 609.
In this embodiment, after the angle of the near-bit 4 is measured by the angle measuring element 8, the angle of the near-bit 4 is adjusted by the guide calibration device 6 according to the preset angle of the near-bit 4, and according to the difference between the angles of the two, the lengths of the first electric push rod 604 and the second electric push rod 605 at the two ends of the flexible metal plate 603 are correspondingly adjusted, so that the flexible metal plate 603 is deformed, the friction pad 607 on the surface of the flexible metal plate contacts with the surface of the near-bit 4 and pushes the near-bit 4 to move in the direction of adjustment, and in the adjustment process, a part of the first electric push rod 604 and the second electric push rod 605 push the near-bit 4 outwards, and the other part of the first electric push rod 604 and the second electric push rod 605 shrink inwards to adapt to the angle adjustment of the near-bit 4, so as to improve the accuracy of angle adjustment.
On the other hand, since the first electric push rod 604 and the second electric push rod 605 are all arranged outside the near drill 4 around the locking ring 601, the position of the near drill 4 can be adjusted from different directions during adjustment, the near drill 4 can be quickly corrected, and the adjustment is convenient. And the vertical distance between the first electric putter 604 and the rotating seat 602 is greater than the vertical distance between the second electric putter 605 and the rotating seat 602, so that the first electric putter 604 can be more suitable for the movement range of the near-bit 4 during adjustment, and the adjustment is more convenient.
Further, the number of the locking rings 601 is at least three, the distance between every two adjacent locking rings 601 is increased from top to bottom, and the angle of the near drill 4 is adjusted by arranging a plurality of groups of locking rings 601, so that the stability of the near drill 4 in the angle adjusting process is improved. The locking ring 601 close to the guide post 1 is more dense, so that the near drill bit 4 can be quickly adjusted.
In still other embodiments, referring to fig. 4 and 5, the sealing assembly 7 includes a sealing seat 701 installed at the bottom end of the mounting seat body 301, a bent metal plate 702 is connected to the outer wall of the sealing seat 701, an annular sealing pad 703 is installed on the outer wall of the drill bit 4, the end of the annular sealing pad 703 is fixedly connected with the bent metal plate 702, the inside of the annular sealing pad 703 is a hollow structure, a plurality of bending tubes 704 are arranged inside the annular sealing pad 703, pressure release balls 705 are connected on the surface of the bending tubes 704 in a conducting manner, the pressure release balls 705 are located inside the drill bit groove 302 to release pressure when being pressed, and the bending tubes 704 are arranged to be elastic structures.
During the advancing and adjusting process of the near-bit 4, the sealing assembly 7 is utilized to ensure that the inside of the bit slot 302 is always in a sealed state, so that the near-bit 4 is protected.
Specifically, along with the removal and the regulation of near drill bit 4, buckle metal sheet 702 corresponds and produces deformation in order to adapt to near drill bit 4's position change, cooperates annular seal to fill up 703 inside pressure release ball to crooked pipe 704 simultaneously and carries out the pressure release for when annular seal fills up 703 quilt was pressed, can guarantee the stability of whole buckle metal sheet 702 and annular seal fills up 703, effectively reduces because the excessive deformation that pressure produced appears damaging, plays the guard action to whole equipment.
In an embodiment of the present invention, referring to fig. 9, a power generation device 9 is further installed inside the guide post 1, the power generation device 9 includes a plurality of guide plates 901 uniformly embedded outside the guide post 1, a guide groove 902 is provided inside the guide plates 901, a plurality of parallel rotating discs 903 are installed inside the guide groove 902, a rotating shaft 904 is connected to the center of the rotating discs 903, the rotating shaft 904 is inserted inside the guide post 1 and is connected with an electromagnetic coil 905, the rotating shaft 904 is rotatably connected with the guide post 1 through a bearing 906, a cylindrical magnet 907 is also installed inside the guide post 1, and the electromagnetic coil 905 is disposed inside the cylindrical magnet 907 to generate power through rotation of the electromagnetic coil 905 around the cylindrical magnet 907, so as to supply power to the guide tool. The two ends of the diversion trench 902 are provided with the screen 908, and the diameter of the opening at the two ends of the diversion trench 902 is larger than the width of the middle part of the diversion trench 902.
Specifically, during the working process, when the near-drill 4 continuously advances, thrust is generated to the underground slurry and the slurry is continuously extruded upwards, the slurry enters the guide groove 902 through the guide plate 901, so that the plurality of rotating discs 903 in the guide groove 902 are driven, the rotating discs 903 rotate, the rotating shafts 904 are driven to rotate, the electromagnetic coils 905 at the end parts of the rotating shafts 904 rotate around the cylindrical magnets 907 to perform cutting magnetic induction line movement to generate electric power, and the whole guide tool is powered. And guide post 1 all sets up guide plate 901 all around for mud can flow into guide plate 901 from different positions and generate electricity, improves generating efficiency, even partial guide plate 901 inner structure damages also does not influence holistic generating efficiency, can satisfy different service scenarios. And screen cloth 908 of guiding gutter 902 both ends installation can play the filtration effect to the mud, prevents that too big grit from entering into the inside damage that produces of guiding gutter 902 to carousel 903, and the opening diameter at guiding gutter 902 both ends is greater than the width of mid portion for the velocity of flow is accelerated after entering into guiding gutter 902 inside, increases the promotion rotation effect to carousel 903, improves generating efficiency.
In summary, according to the self-generating near-bit geosteering tool disclosed by the invention, the angle measuring device is arranged in the guide post, and the angles of the guide post and the near-bit are respectively measured by the angle measuring device in the underground advancing process of the near-bit so as to obtain the accurate angle of the current position, so that the accurate well inclination angle is obtained in the drilling process, the near-bit is quickly adjusted from the inside by utilizing the guide calibrating device, the influence of external pressure on the near-bit adjusting process can be effectively reduced, the angle adjustment of the near-bit is more accurate by adjusting from the inside, the accuracy of the near-bit angle adjustment is improved, meanwhile, the whole device adopts the self-generating mode to supply power, and energy can be provided by the power generating device when the internal power supply is insufficient, so that the backup power is provided for the whole device, the exploration distance and the service time of the whole device are effectively prolonged, and the use requirements of various complex environments can be met. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (11)
1. The utility model provides a from power generation near-bit geosteering tool, its characterized in that includes guide post (1), guide post (1) one end is connected with connecting piece (2), the guide post (1) other end is connected with drill bit mount pad (3), drill bit mount pad (3) are used for installing near-bit (4), guide post (1) internally mounted has angle measurement device (5), angle measurement device (5) are used for confirming through acquireing current position near-bit (4) current initial angle, just drill bit mount pad (3) inside still installs direction calibrating device (6), direction calibrating device (6) are used for right near-bit (4) initial angle adjusts;
the drill bit mounting seat (3) comprises a mounting seat body (301) arranged in the other end of the guide post (1), a drill bit groove (302) is formed in the mounting seat body (301), the width of the drill bit groove (302) is larger than that of the drill bit (4), a V-shaped guide groove (303) is formed in the center of the inside of the drill bit groove (302), a positioning rod (304) is arranged in the guide groove (303), a spherical connecting piece (305) is further arranged in the mounting seat body (301), the positioning rod (304) is hinged with the spherical connecting piece (305) so as to correspondingly deform to adapt to the angle of the drill bit (4) when the drill bit (4) is adjusted, the drill bit (4) is inserted into the positioning rod (304) and fixed together after being inserted into the drill bit groove (302), the guide calibrating device (6) is arranged on the inner wall of the drill bit groove (302) so as to respectively adjust the angle of the drill bit (4) from two ends, the drill bit (4) is arranged at the bottom end (7) of the drill bit assembly (302), and the drill bit assembly (7) is kept in a closed state when the drill bit assembly (4) is kept in a closed state.
2. The self-generating near-bit geosteering tool of claim 1, wherein the guiding calibration device (6) comprises a locking ring (601) installed inside the installation seat body (301), the near-bit (4) is arranged inside the locking ring (601), a plurality of rotating seats (602) are uniformly arranged on the locking ring (601), flexible metal plates (603) are hinged outside the rotating seats (602), two end outer walls of the flexible metal plates (603) are respectively connected with a first electric push rod (604) and a second electric push rod (605), the outer ends of the first electric push rod (604) and the outer ends of the second electric push rod (605) are inserted into the installation seat body (301) and are connected with a bearing seat (606), the vertical distance between the first electric push rod (604) and the rotating seats (602) is larger than the vertical distance between the second electric push rod (605) and the rotating seats (602), and the end portions (605) of the first electric push rod (604) and the second electric push rod (605) are respectively connected with a flexible backing plate (607) penetrating through the metal plates (603) and are in friction fit with the near-bit surface (4).
3. The self-generating near-bit geosteering tool of claim 2, wherein the rotating seat (602) end further mounts a limit head (608), and the near-bit (4) surface is provided with a limit groove (609) that mates with the limit head (608).
4. The self-generating near-bit geosteering tool of claim 2, wherein the number of locking rings (601) is at least three, and the spacing between adjacent sets of locking rings (601) increases sequentially from top to bottom.
5. The self-generating near-bit geosteering tool of claim 2, wherein the sealing assembly (7) comprises a sealing seat (701) mounted at the bottom end of the mounting seat body (301), a bent metal plate (702) is connected to the outer wall of the sealing seat (701), an annular sealing pad (703) is mounted on the outer wall of the near-bit (4), the end of the annular sealing pad (703) is fixedly connected with the bent metal plate (702), a hollow structure is arranged inside the annular sealing pad (703), a plurality of bending tubes (704) are arranged inside the annular sealing pad (703), pressure relief balls (705) are connected on the surface of the bending tubes (704), the pressure relief balls (705) are located inside the bit grooves (302) to relieve pressure when being pressed, and the bending tubes (704) are arranged to be elastic structures.
6. Self-generating near-bit geosteering tool according to claim 1, characterized in that the angle measuring device (5) comprises an upper measuring ring (501) mounted inside the steering column (1) and a lower measuring ring (502) mounted inside the mount body (301), the upper measuring ring (501) and the inner wall of the lower measuring ring (502) are both mounted with angle measuring elements (8) through mounting rings (503), the angle measuring elements (8) are used for measuring the angle at which the near-bit (4) is currently located.
7. The self-generating near-bit geosteering tool of claim 6, wherein the angle measurement member (8) comprises a plurality of measurement seats (801) uniformly mounted on the mounting ring (503), a slide rail is disposed on the mounting ring (503), the measurement seats (801) are driven by a control motor to rotate around the mounting ring (503) along the slide rail, a reference column (802) and a measurement column (803) are mounted inside the measurement seats (801), an upper fixed column (804) and a lower fixed column (805) are mounted inside the measurement seats (801), a central point connecting line of the upper fixed column (804) and the lower fixed column (805) is parallel to an axial direction of the guide column (1), one end of the reference column (802) is rotationally connected with the upper fixed column (804), the other end of the reference column (802) is connected with a balancing weight (806), one end of the measurement column (803) is fixedly connected with the upper fixed column (804), the other end of the measurement column (803) is fixedly connected with the lower fixed column (803), the measurement column (803) is completely coincides with the reference column (803), and the measurement column (803) is completely coincides with the measurement column (803) in an internal space (802), and the measurement column (803) is completely coincides with the measurement column (803) in the vertical space, angle sensors are arranged inside the measuring column (803) and the reference column (802) so as to measure the inclination angles of the liquid surfaces inside the reference column (802) and the measuring column (803) through the angle sensors.
8. The self-generating near-bit geosteering tool of claim 7, wherein an angle gauge is mounted on the upper fixed column (804) for measuring an angle between the measurement column (803) and the reference column (802) after they are separated, and a haulage rope (807) is further connected between the measurement column (803) and the reference column (802), scale marks are provided on the haulage rope (807), and scale marks are provided on both the measurement column (803) and the reference column (802), and an optical sensor is mounted inside the mounting ring (503) for detecting the scale marks on the measurement column (803), the reference column (802), and the haulage rope (807) by the optical sensor.
9. The self-generating near-bit geosteering tool of claim 8, wherein the angle measurement (8) further comprises a motor controller for controlling the control motor to adjust the position of the different measurement seats (801) at the mounting ring (503).
10. Self-generating near-bit geosteering tool according to any of claims 1 to 9, characterized in that the inside of the steering column (1) is also equipped with a power generation device (9), the power generation device (9) comprises a plurality of guide plates (901) uniformly embedded outside the steering column (1), the guide plates (901) are internally provided with guide grooves (902), the guide grooves (902) are internally equipped with a plurality of parallel rotating discs (903), the center of the rotating discs (903) is connected with a rotating shaft (904), the rotating shaft (904) is inserted inside the steering column (1) and is connected with an electromagnetic coil (905), and the rotating shaft (904) is connected with the steering column (1) in a rotating way through a bearing (906), the inside of the steering column (1) is also equipped with a cylindrical magnet (907), and the electromagnetic coil (905) is arranged inside the cylindrical magnet (907) to generate electricity through the rotation of the electromagnetic coil (905) around the cylindrical magnet (907) to power the steering tool.
11. The self-generating near-bit geosteering tool of claim 10, wherein the diversion trench (902) has screens (908) mounted at both ends and the diameter of the opening at both ends of the diversion trench (902) is greater than the width of the middle portion of the diversion trench (902).
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| CN202311207893.2A CN116950566B (en) | 2023-09-19 | 2023-09-19 | Self-generating near-bit geosteering tool |
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| CN105863511A (en) * | 2016-04-22 | 2016-08-17 | 柳超 | Directional drilling executing mechanism based on three-speed drill bit |
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Denomination of invention: A self generating near drill bit geological guidance tool Granted publication date: 20231208 Pledgee: Bank of Shanghai Co.,Ltd. Jing'an Sub branch Pledgor: Shanghai datan Energy Technology Co.,Ltd. Registration number: Y2024310000633 |