CN115898327B - Rotary self-guiding type floating shoe for horizontal well - Google Patents
Rotary self-guiding type floating shoe for horizontal well Download PDFInfo
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- CN115898327B CN115898327B CN202310179022.8A CN202310179022A CN115898327B CN 115898327 B CN115898327 B CN 115898327B CN 202310179022 A CN202310179022 A CN 202310179022A CN 115898327 B CN115898327 B CN 115898327B
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- 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
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- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention discloses a rotary self-guiding floating shoe for a horizontal well, which relates to the technical field of horizontal well drilling equipment.
Description
Technical Field
The invention relates to the technical field of horizontal well drilling equipment, in particular to a horizontal well rotary self-guiding type floating shoe.
Background
The horizontal well is mainly used for development of carbonate fractured reservoirs, reservoirs with gas top or bottom water, thin-layer reservoirs, low-permeability reservoirs, heavy oil reservoirs, high-water-content artificial water-flooding reservoirs and the like, and mainly comprises the operations of primary drill-out, secondary drill-out, drilling, drill-out, drill-in, bit changing, drill-out, well completion, electrical measurement, casing running, well cementation operation and the like in the drilling process;
for the well cementation operation, the purpose of the well cementation operation is to protect and support the sleeve in the oil-gas well, seal and isolate stratum such as oil, gas and water, and the essence of the well cementation operation is the operation of filling cement in the annular space of a shaft and a steel pipe, wherein the structure of horizontal well drilling equipment is needed to be used, the horizontal well drilling equipment is used as an auxiliary structure for filling cement slurry, so that the backflow of cement slurry is avoided, and the horizontal well drilling equipment is also used as an auxiliary structure for putting the sleeve into the well wall, so that the sleeve is prevented from being inserted into the well wall;
in the actual process of well drilling and well cementation, the actual well length of the horizontal well can reach thousands of meters, and the well is not in a completely vertical state, but in a multiple bending state, so that when a casing is put into the well, the horizontal well drilling equipment is mainly in a relatively static well-down mode, the horizontal well drilling equipment is subjected to a bending well wall, the well-down difficulty of the horizontal well drilling equipment is increased, even the well wall is scratched to increase and damage the well, when the current horizontal well drilling equipment is put into the well, the inner wall of the well with complex bending degree is difficult to meet, and the possibility that the horizontal well drilling equipment scratches the well wall is increased;
the present application proposes a solution to the above technical problem.
Disclosure of Invention
The invention aims to provide a rotary self-guiding floating shoe for a horizontal well, which is used for solving the problem that the conventional horizontal well drilling equipment is difficult to meet the inner wall of a well with complex bending degree because the motion form of the horizontal well drilling equipment is mainly a static mode in the well descending action, and increasing the possibility that the horizontal well drilling equipment scratches the well wall to damage the well.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a horizontal well rotation self-guiding type floating shoe, includes main part section of thick bamboo and play thick bamboo cap, play thick bamboo cap setting is in the downside position of main part section of thick bamboo, and is provided with the locating cone that is vertical setting in the inside central point of main part section of thick bamboo put, be provided with the chute chamber between main part section of thick bamboo inner wall and the locating cone outer wall, install the upper bracket piece in the inside central point position of upper bracket piece, locating cone central point position is provided with the double-end ball cap pole that is vertical setting, the double-end ball cap pole is located the both ends position of locating cone inner wall and outer wall and all installs the shutoff ball, the inside slidable mounting of cavity has the locating plate, be connected between locating plate lower extreme central point position and the double-end ball cap pole upper end position, be provided with the top position spring between cavity inner wall bottom and the locating plate, the middle end part of double-end ball cap pole installs the sliding block, the sliding block is sliding connection with the central point position of locating cone;
the upper end part of the positioning cone is cylindrical, the lower end part of the positioning cone is in a reverse conical shape, a limited spiral flow strip is arranged on the inner wall of the main body cylinder corresponding to the upper end part of the positioning cone, a plurality of arc flow strips are arranged on the inner wall of the main body cylinder corresponding to the lower end part of the positioning cone, the arc flow strips are arranged in an annular array along the central point of the positioning cone, and the limited spiral flow strips, the arc flow strips and the launder cavity are matched;
the positioning cone is internally provided with a grouting pipe, the grouting pipe is communicated with the inside of the launder cavity, and a plurality of grout outlets are formed in the outer wall position of the launder cavity corresponding to the ball blocking position at the lower end of the double-end ball cap rod.
Further provided is that: and a connecting plug is arranged at the top end of the inner wall of the positioning cone, and the grouting pipe is fixed in the connecting plug.
Further provided is that: the upper end of the main body cylinder is rotatably provided with a connecting hoop, and the connecting hoop is in threaded connection with the outer wall of the positioning cone.
Further provided is that: the outer wall of the top end of the positioning cone is in threaded connection with a stop cap, and the spiral directions of the stop cap, the connecting hoop and the outer wall of the positioning cone are opposite.
Further provided is that: the upper supporting block is characterized in that an upper pressing block is arranged at the upper end of the upper supporting block, a chock is arranged at the central point of the lower surface of the upper pressing block, an induction piece is arranged at the upper end of the chock, the cross section of the induction piece is in a concave arc shape, a positioning signal ball is arranged at the central point of the top end inside the upper pressing block, the lower end of the positioning signal ball is connected with a power signal wire, and the lower end of the power signal wire is connected with a second swing ball.
Further provided is that: the induction piece is provided with a ring locus and a plurality of side loci, the ring locus is arranged on the outer edge of the inner side of the induction piece, the side loci are arranged on the inner wall of the induction piece, and the side loci are arranged in an annular array along the central point of the induction piece.
Further provided is that: the novel ball swinging device is characterized in that an annular movable cavity is formed in the main body barrel, a movable ring is arranged in the movable cavity, a plurality of first swinging balls are connected to the outer wall of the movable ring, the first swinging balls are arranged in an annular array along the center point of the movable ring, and ball grooves matched with the first swinging balls are formed in the positions, corresponding to the outer wall of the movable ring, of the movable cavity.
The invention has the following beneficial effects:
1. the invention forms a launder cavity between the main body cylinder and the positioning cone, cement slurry for well cementation is injected into the launder cavity through the grouting pipe, so that the launder cavity is used as a cement slurry runner, then the positioning cone is used as a static structure in combination with a limited spiral flow strip and a flow strip in the flowing process of cement slurry, when cement slurry flows through the launder cavity, the main body cylinder forms a dynamic rotating structure relative to the positioning cone through the internal force generated when the cement slurry runner, the main body cylinder can rotate appropriately around the positioning cone, and then in the well descending process, the whole horizontal well drilling equipment structure forms a self-guiding rotating structure, and the purpose is to facilitate the horizontal well drilling equipment to drive a casing to descend;
2. according to the dynamic rotation mode of the main body cylinder, two groups of free swing structures are arranged in the positioning cone and the main body cylinder, free motions generated by the first swing ball and the second swing ball under the action of gravity force in the two groups of free swing structures are matched with dynamic rotation, the purpose of setting the free swing structures in the positioning cone is to match with preliminary detection of the downhole angle of the whole horizontal well drilling equipment structure, the first swing balls in the free swing structures in the main body cylinder swing orderly in a follow-up mode through dynamic rotation, centrifugal force is generated through the rotation action of the first swing balls, lateral force is generated on the main body cylinder, and preliminary stabilization is achieved on the main body cylinder.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a horizontal well rotary self-guiding floating shoe according to the present invention;
FIG. 2 is a cross-sectional view of FIG. 1 of a horizontal well rotary self-guiding shoe according to the present invention;
FIG. 3 is a split view of FIG. 1 in a horizontal well rotary self-guiding floating shoe according to the present invention;
FIG. 4 is a cross-sectional view of a horizontal well rotating self-guiding floating shoe stopping cap, connecting hoop and main body barrel component according to the present invention;
FIG. 5 is a cut-away view of a positioning cone assembly in a horizontal well rotary self-guiding shoe in accordance with the present invention;
FIG. 6 is a cross-sectional view of a body tube member of a horizontal well rotary self-guiding float shoe in accordance with the present invention;
FIG. 7 is a schematic view of the structure of a double-ended ball cap bar component in a horizontal well rotary self-guiding floating shoe according to the present invention;
FIG. 8 is a cross-sectional view of an upper press block component in a horizontal well rotary self-guiding float shoe according to the present invention;
fig. 9 is a schematic structural diagram of a portion a of a horizontal well rotary self-guiding floating shoe according to the present invention.
In the figure: 1. a main body cylinder; 2. a connecting hoop; 3. a retaining cap; 4. grouting pipe; 5. a pulp outlet cap; 6. a connecting plug; 7. pressing into blocks; 8. a supporting block is arranged; 9. positioning a cone; 10. a launder cavity; 11. an induction piece; 12. a first swing ball; 13. a movable ring; 14. a lateral site; 15. a loop site; 16. a sliding block; 17. double-ended spherical cap bar; 18. a direction-limiting spiral flow strip; 19. arc-shaped flow bars; 20. a movable cavity; 2001. a ball groove; 21. a slurry outlet; 22. a cavity; 23. a positioning plate; 24. a top spring; 25. a power signal line; 26. positioning a signal ball; 27. a second swing ball; 28. a chock.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
In horizontal well drilling operation, the well formed is not completely vertical or completely horizontal, and the actual well presents multiple curves, so in the well cementation operation of the horizontal well, the structures such as horizontal well drilling equipment are required to be used as guide shoes or cement slurry filling structures, the difficulty of the horizontal well drilling equipment in a static mode in the well is high, and the following technical scheme is provided for the purpose:
referring to fig. 1-9, in the embodiment, a horizontal well rotary self-guiding floating shoe comprises a main body barrel 1 and a slurry outlet cap 5, wherein the slurry outlet cap 5 is arranged at the lower side position of the main body barrel 1, a positioning cone 9 which is vertically arranged is arranged at the inner central position of the main body barrel 1, a launder cavity 10 is arranged between the inner wall of the main body barrel 1 and the outer wall of the positioning cone 9, an upper supporting block 8 is arranged at the inner lower end position of the positioning cone 9, a cavity 22 is formed at the inner central point of the upper supporting block 8, a double-end ball cap rod 17 which is vertically arranged is arranged at the central point of the positioning cone 9, blocking balls are arranged at the two end positions of the inner wall and the outer wall of the positioning cone 9, a positioning plate 23 is slidably arranged in the cavity 22, a top spring 24 is arranged between the bottom end of the inner wall of the cavity 22 and the positioning plate 23, a sliding block 16 is arranged at the middle end part of the double-end ball cap rod 17, and the sliding block 16 is slidably connected with the central point position of the positioning cone 9;
the upper end part of the positioning cone 9 is cylindrical, the lower end part of the positioning cone 9 is inverted conical, a limited spiral flow strip 18 is arranged on the inner wall of the main body cylinder 1 corresponding to the upper end part of the positioning cone 9, a plurality of arc-shaped flow strips 19 are arranged on the inner wall of the main body cylinder 1 corresponding to the lower end part of the positioning cone 9, the arc-shaped flow strips 19 are arranged in an annular array along the center point of the positioning cone 9, and the limited spiral flow strips 18, the arc-shaped flow strips 19 and the launder cavity 10 are matched;
the grouting pipe 4 is arranged in the positioning cone 9, the grouting pipe 4 is communicated with the inside of the launder cavity 10, and a plurality of grout outlets 21 are formed in the launder cavity 10 at the outer wall positions corresponding to the ball blocking positions at the lower ends of the double-end ball cap rods 17.
In the use process, the horizontal well drilling equipment structure is connected with a sleeve structure used in the well descending process, and the well descending process is not repeated here, and particularly needs to be described as follows: one end of the grouting pipe 4 needs to be connected to a grouting structure;
in the actual use process, the method comprises the following steps:
step one: the main body cylinder 1 is used as a main structure in a well, namely the main body cylinder 1 is used as a direct structure contacting a well wall, in the well descending process, the positioning cone 9 is of a static structure relative to the main body cylinder 1, the main body cylinder 1 is of a dynamic structure relative to the positioning cone 9, a certain correlation exists between the main body cylinder 1 and the positioning cone, cement slurry is injected into the chute cavity 10 formed between the dynamic structure and the static structure through the grouting pipe 4, when the cement slurry flows into the chute cavity 10, the cement slurry flows along the limited spiral flow strip 18 at first, and the cement slurry flowing into the chute cavity 10 is enabled to flow in a spiral downward direction under the action of the limited spiral flow strip 18 by referring to the shape of the limited spiral flow strip 18 in FIG. 6;
step two: when the cement paste flows out from the lowest side of the limited spiral flow strip 18, the cement paste enters the area of the arc-shaped flow strip 19 again, so that the flowing direction of the cement paste is interfered by the arc-shaped flow strip 19 again;
step three: finally, the cement slurry flows into the lowest side of the sluice chamber 10, referring to fig. 2 and 9, as the cement slurry is continuously poured in, the pressure of the cement slurry in the sluice chamber is increased until the pressure exceeds the elastic force of the top spring 24, so that the double-end ball cap rod 17 is driven to move downwards, then the slurry outlet 21 is exposed, the cement slurry is discharged along the slurry outlet 21, finally, the cement slurry is discharged along the slurry outlet cap 5, and when the cement slurry is stopped being poured in, the double-end ball cap rod 17 is driven to reset under the resilience force of the top spring 24 to block the slurry outlet 21.
In combination with the above-mentioned internal steps one, two and three, the cement slurry is limited to "interference" of the spiral flow strip 18 and the arc flow strip 19 in the flowing process, in this state, the positioning cone 9 is in a relatively static state, and the force generated when the cement slurry is "interfered" is transferred to the main body cylinder 1 in a reactive force manner, so that the main body cylinder 1 can be driven to perform self-guiding dynamic rotation in the flowing direction of the cement slurry, and the purpose is to facilitate the well-down process in a dynamic manner.
Example two
The embodiment is a dynamic rotation mode matched with the embodiment, optimizes the installation mode of the whole structure, and specifically comprises the following steps:
the top end position of the inner wall of the positioning cone 9 is provided with a connecting plug 6, the grouting pipe 4 is fixed in the connecting plug 6, the upper end position of the main body cylinder 1 is rotatably provided with a connecting hoop 2, the connecting hoop 2 is in threaded connection with the outer wall of the positioning cone 9, the top end outer wall position of the positioning cone 9 is in threaded connection with a retaining cap 3, and the spiral directions of the retaining cap 3, the connecting hoop 2 and the outer wall of the positioning cone 9 are opposite.
Working principle: in the first embodiment, the positioning cone 9 is of a static structure, and the main body barrel 1 is of a dynamic structure, but in the actual installation process, the installation stability of each component needs to be ensured, and the following installation mode is proposed for this purpose:
a-1: the connecting hoop 2 is connected to the positioning cone 9, and the connecting hoop 2 is in rotary connection with the main body cylinder 1, so that an integrated structure is formed between the main body cylinder 1 and the positioning cone 9, but the self-guiding rotation process of the main body cylinder 1 is not affected;
a-2: the retaining cap 3 is connected to the positioning cone 9 again, so that the connecting hoop 2 is secondarily reinforced, the connection stability of the whole structure is ensured, and the retaining cap also has the installation structure as the connecting plug 6;
in connection with the insides of a-1 and a-2 it is necessary to ensure that the thread direction between the coupling collar 2 and the retaining cap 3 and the positioning cone 9 is reversed, the purpose of which is to cause the retaining cap 3 to come loose relative to the coupling collar 2 during the continuous self-guiding rotation, with the result that the stability of the connection between the components is affected.
Example III
The embodiment is based on the dynamic rotation mode of the first embodiment, and the following is added:
the upper pressing block 7 is installed at the upper end position of the upper supporting block 8, the chock 28 is installed at the central point of the lower surface of the upper pressing block 7, the induction piece 11 is installed at the upper end position of the chock 28, the cross section of the induction piece 11 is in an inward concave arc shape, the positioning signal ball 26 is installed at the central point of the top end inside the upper pressing block 7, the lower end of the positioning signal ball 26 is connected with the power signal wire 25, the lower end of the power signal wire 25 is connected with the second pendulum ball 27, one ring site 15 and a plurality of side sites 14 are arranged in the induction piece 11, the ring site 15 is arranged on the outer edge of the inner side of the induction piece 11, the plurality of side sites 14 are arranged on the inner wall position of the induction piece 11, the side sites 14 are arranged in an annular array along the central point position of the induction piece 11, the main body barrel 1 is provided with an annular movable cavity 20, the movable cavity 20 is provided with a plurality of first pendulum balls 12, the plurality of first pendulum balls 12 are arranged in an annular array along the central point of the movable ring 13, and the movable cavity 20 is provided with ball 2001 grooves matched with the first pendulum balls 12 corresponding to the outer wall position of the movable ring 13.
The advantages are that: referring to the well of the current horizontal well, the well is not in a completely vertical or completely horizontal state, and for this purpose, the following two ways are added:
b-1: in combination with the dynamic rotation mode in the first embodiment, for the hoistway in the relatively vertical state, the second swing ball 27 is theoretically kept consistent with the direction of the attraction force all the time under the action of the gravity force, referring to fig. 8, in the initial state of the second swing ball 27, the second swing ball 27 is not in contact with the side locus 14 or the ring locus 15, a closed circuit is not formed among the second swing ball 27, the power signal line 25 and the positioning signal ball 26, but the actual hoistway is in a multiple bending state, so in actual situations, the second swing ball 27 touches the side locus 14 in the corresponding position along with the angle switching of the hoistway, and a closed circuit is formed among the second swing ball 27, the power signal line 25 and the positioning signal ball 26, so that the actual angle of the horizontal well drilling equipment is fed back;
the circuit between the second swing ball 27, the power signal line 25 and the positioning signal ball 26 can refer to the current electric signal conversion principle, wherein the principle is that electric power is converted into a digital signal, the digital signal is fed back to form a corresponding image, and the circuit is not repeated here, and the circuit is only used as an auxiliary structure in the whole horizontal well drilling equipment structure;
b-2: referring to B-1, when the second swing ball 27 contacts the ring site 15, the horizontal well drilling device at this time can be fed back to be in a relatively horizontal state, and with reference to fig. 4, along with the self-guiding rotation of the main body barrel 1, the movable ring 13 can also be indirectly driven to rotate, so as to drive the first swing balls 12 to perform annular motion, so that the annular motion of the first swing balls 12 generates an outward centrifugal force, and in theory, an even outward external force is formed on the outer wall of the main body barrel 1, so as to stabilize the dynamic rotation process in the first embodiment.
To sum up: the main structure of cement slurry is utilized between the main body cylinder and the positioning cone, cement slurry is injected through the grouting pipe, the positioning cone is used as a static structure, the pressure during cement slurry injection is used as a power source, the directional spiral flow strip and the arc flow strip in the main body cylinder are combined, the main body cylinder can rotate appropriately, a static-dynamic combined rotating structure is formed, the rotating speed of the main body cylinder is in direct proportion to the injection speed of the cement slurry, accordingly, when a casing is put into, the horizontal well drilling equipment is ensured to be put into a well in a dynamic mode, when the horizontal well drilling equipment is put into the well in the dynamic rotating mode, the first swing ball and the second swing ball are utilized to rotate appropriately, the centrifugal force matched with the main body cylinder or the positioning cone is generated, and the purpose of the main body cylinder is to stabilize outwards.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. The utility model provides a horizontal well rotation self-guiding type floating shoe, includes main part section of thick bamboo (1) and goes out thick bamboo cap (5), its characterized in that, go out thick bamboo cap (5) set up on the downside position of main part section of thick bamboo (1), and be provided with on the inside central point of main part section of thick bamboo (1) and be vertical setting's locating cone (9), be provided with chute chamber (10) between main part section of thick bamboo (1) inner wall and locating cone (9) outer wall, install on locating cone (9) inside lower extreme position and go up riding block (8), cavity (22) have been seted up in last riding block (8) inside central point position, locating cone (9) central point position is provided with and is vertical setting's double-ended spherical cap pole (17), double-ended spherical cap pole (17) are located on the both ends position of locating cone (9) inner wall and outer wall and all install the stifled ball, the inside slidable mounting of cavity (22) has locating plate (23), be connected between locating plate (23) lower extreme central point position and the upper end position of spherical cap pole (17), be equipped with in locating cone (16) and the end portion slider (16) slide between locating cone (23);
the upper end part of the positioning cone (9) is cylindrical, the lower end part of the positioning cone (9) is in a reverse conical shape, a limited spiral flow strip (18) is arranged on the inner wall position of the main body cylinder (1) corresponding to the upper end part of the positioning cone (9), a plurality of arc-shaped flow strips (19) are arranged on the inner wall position of the main body cylinder (1) corresponding to the lower end part of the positioning cone (9), the arc-shaped flow strips (19) are arranged in an annular array along the center point of the positioning cone (9), and the limited spiral flow strips (18), the arc-shaped flow strips (19) and the launder cavity (10) are matched;
the grouting device is characterized in that a grouting pipe (4) is arranged inside the positioning cone (9), the grouting pipe (4) is communicated with the inside of the launder cavity (10), and a plurality of grout outlets (21) are formed in the outer wall position of the launder cavity (10) corresponding to the ball blocking position at the lower end of the double-end ball cap rod (17).
2. The rotary self-guiding type floating shoe for the horizontal well according to claim 1, wherein a connecting plug (6) is arranged at the top end position of the inner wall of the positioning cone (9), and the grouting pipe (4) is fixed in the connecting plug (6).
3. The rotary self-guiding type floating shoe for the horizontal well according to claim 1, wherein a connecting hoop (2) is rotatably arranged at the upper end position of the main body cylinder (1), and the connecting hoop (2) is in threaded connection with the outer wall of the positioning cone (9).
4. A horizontal well rotary self-guiding type floating shoe according to claim 3, wherein the outer wall of the top end of the positioning cone (9) is in threaded connection with a retaining cap (3), and the spiral directions of the retaining cap (3), the connecting hoop (2) and the outer wall of the positioning cone (9) are opposite.
5. The rotary self-guiding floating shoe for the horizontal well according to claim 1, wherein an upper pressing block (7) is arranged at the upper end position of the upper supporting block (8), a chock (28) is arranged at the central point of the lower surface of the upper pressing block (7), an induction piece (11) is arranged at the upper end position of the chock (28), the cross section of the induction piece (11) is in a concave arc shape, a positioning signal ball (26) is arranged at the central point of the top end inside the upper pressing block (7), a power signal wire (25) is connected to the lower end of the positioning signal ball (26), and a second swinging ball (27) is connected to the lower end of the power signal wire (25).
6. The horizontal well rotating self-guiding type floating shoe according to claim 5, wherein a ring site (15) and a plurality of side sites (14) are arranged in the sensing piece (11), the ring site (15) is arranged on the inner outer edge of the sensing piece (11), the plurality of side sites (14) are arranged on the inner wall of the sensing piece (11), and the side sites (14) are arranged in a ring array along the central point of the sensing piece (11).
7. The rotary self-guiding type floating shoe for the horizontal well according to claim 1, wherein an annular movable cavity (20) is formed in the main body barrel (1), a movable ring (13) is arranged in the movable cavity (20), a plurality of first swing balls (12) are connected to the outer wall of the movable ring (13), the first swing balls (12) are arranged in an annular array along the central point of the movable ring (13), and ball grooves (2001) matched with the first swing balls (12) are formed in the position, corresponding to the outer wall of the movable ring (13), of the movable cavity (20).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310179022.8A CN115898327B (en) | 2023-03-01 | 2023-03-01 | Rotary self-guiding type floating shoe for horizontal well |
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| CN202310179022.8A CN115898327B (en) | 2023-03-01 | 2023-03-01 | Rotary self-guiding type floating shoe for horizontal well |
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| CN115898327B true CN115898327B (en) | 2023-05-02 |
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| CN201090174Y (en) * | 2007-10-17 | 2008-07-23 | 吉林石油集团有限责任公司 | Steel body sealing float collar and float shoe for oil field well-cementing |
| WO2013071688A1 (en) * | 2011-09-23 | 2013-05-23 | Wang Jianbai | Method of controlling out-of-control high-pressure oil well blowout |
| CN203081394U (en) * | 2012-10-10 | 2013-07-24 | 西安航威石化设备有限公司 | Float collar and float shoe for horizontal well |
| CN103061706A (en) * | 2012-12-31 | 2013-04-24 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Casing float shoe for well cementation |
| CN103147719A (en) * | 2013-01-09 | 2013-06-12 | 慕武 | Spring type automatic grout valve |
| CN204225816U (en) * | 2014-10-21 | 2015-03-25 | 中国石油集团长城钻探工程有限公司 | A kind of efficient drifting guide shoe with spinfunction |
| CN204609831U (en) * | 2015-02-17 | 2015-09-02 | 天津钻迈科石油技术服务有限公司 | A kind of mud grouting float collar float plug of oil well cementing |
| CN106761472A (en) * | 2016-12-29 | 2017-05-31 | 德州汉隆石油设备有限公司 | Self- steering covers tube vibration guide shoe |
| CN207420537U (en) * | 2017-10-18 | 2018-05-29 | 中国石油集团渤海钻探工程有限公司 | Self-aiming rotates float shoe |
| CN113374443A (en) * | 2021-07-21 | 2021-09-10 | 濮阳三力诚信石油设备有限公司 | Self-rotating drillable reaming float shoe |
| CN114086898A (en) * | 2022-01-17 | 2022-02-25 | 山东健源石油工程技术有限公司 | Casing centralizer for well cementation construction and method |
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