CN114635665B - Oil drilling plugging device - Google Patents
Oil drilling plugging device Download PDFInfo
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- CN114635665B CN114635665B CN202210548497.5A CN202210548497A CN114635665B CN 114635665 B CN114635665 B CN 114635665B CN 202210548497 A CN202210548497 A CN 202210548497A CN 114635665 B CN114635665 B CN 114635665B
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- 238000005553 drilling Methods 0.000 title claims abstract description 29
- 239000003129 oil well Substances 0.000 claims abstract description 70
- 238000003780 insertion Methods 0.000 claims abstract description 44
- 230000037431 insertion Effects 0.000 claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims description 24
- 238000009434 installation Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The application relates to the technical field of petroleum drilling, in particular to a petroleum drilling plugging device which comprises a casing, a limiting mechanism and a plugging mechanism; the limiting mechanism comprises a driving assembly and a plurality of inserting rods for being inserted into the wall of the oil well, the inserting rods are uniformly distributed along the circumferential direction of the sleeve, a sliding groove for the inserting rods to slide is formed in the sleeve, and the sliding groove is formed along the radial direction of the sleeve; the driving assembly is used for driving the insertion rod to slide along the sliding groove; the plugging mechanism is used for plugging an oil well; according to the designed petroleum drilling plugging device, when the surface of the well wall of the oil well is flat, the plugging rods are uniformly inserted into the well wall of the oil well, so that the sleeve and the well wall of the oil well are fixed; when the surface of the well wall of the oil well is uneven, the inserting rods can be inserted into the uneven positions of the well wall of the oil well, so that the plurality of inserting rods tend to be stressed uniformly, the connection performance of the inserting rods and the well wall is improved, and the fixing effect of the sleeve is further improved.
Description
Technical Field
The application relates to the technical field of petroleum drilling, in particular to a petroleum drilling plugging device.
Background
Lost circulation is one of the common phenomena in oilfield development. The lost circulation refers to a complex underground condition that drilling fluid, cement slurry, completion fluid and other fluids directly enter a stratum under the action of pressure difference in underground operation such as drilling, well cementation, testing or well repair; the leakage stoppage device is clamped at the leakage stoppage position to separate liquid flow from an upper production layer and a lower production layer against the leakage phenomenon, and meanwhile, the liquid flow cannot enter an oil pipe, so that the leakage stoppage is realized, and the purpose of increasing oil is achieved.
The patent document with the application number of 201720976484.2 discloses a cage sleeve type well drilling plugging device which comprises a small continuous oil pipe, an expansion sleeve, a cage sleeve and a sealing sleeve, wherein the small continuous oil pipe is connected with the expansion sleeve, and the expansion sleeve is in a closed state; the cage sleeve comprises a plurality of cage columns with equal length and locking rings which are connected with each other to form a cylinder, the number of the locking rings is at least two, the head end and the tail end of each locking ring are connected in a matched mode, an adaptive ratchet wheel and a pawl are arranged between the matched connecting portions, a clip is sleeved on the outer side of the matched connecting portion, and the ratchet wheel and the pawl enable the locking rings to expand only; the sealing sleeve is sleeved outside the cage sleeve, the expansion sleeve is positioned in the cage sleeve, and the maximum expandable diameter of the expansion sleeve is larger than the diameter of the cage sleeve.
Aiming at the related technology, the applicant thinks that when the cage sleeve and the sealing sleeve are abutted against the well wall, the rock stratum can be damaged in the drilling process, so that the surface of the rock stratum is uneven, a gap is left between the local positions of the cage sleeve and the sealing sleeve and the well wall, and the fixing effect of the cage sleeve and the sealing sleeve is influenced.
Disclosure of Invention
In order to improve the fixed effect of sleeve pipe and the wall of a well, this application provides an oil drilling plugging device.
The application provides a petroleum drilling plugging device adopts following technical scheme:
the oil drilling plugging device comprises a casing, a limiting mechanism and a plugging mechanism;
the limiting mechanism comprises a driving assembly and a plurality of inserting rods for being inserted into the wall of the oil well, the inserting rods are uniformly distributed along the circumferential direction of the sleeve, a sliding groove for the inserting rods to slide is formed in the sleeve, the sliding groove is formed along the radial direction of the sleeve, and the number of the sliding groove is the same as that of the inserting rods;
the driving assembly is used for driving the insertion rod to slide along the sliding groove;
the plugging mechanism is used for plugging an oil well.
By adopting the technical scheme, when plugging is carried out underground, the driving assembly is adjusted, the driving assembly drives the insertion rod to slide along the sliding groove, so that the insertion rod is inserted into the wall of the oil well, and then the plugging assembly is adjusted so that the plugging assembly plugs the position of the oil well to be plugged; according to the designed petroleum drilling plugging device, when the surface of the well wall of the oil well is flat, the plugging rods are uniformly inserted into the well wall of the oil well, so that the sleeve and the well wall of the oil well are fixed; when the surface of the well wall of the oil well is uneven, the inserting rods can be inserted into the uneven positions of the well wall of the oil well, so that the plurality of inserting rods tend to be stressed uniformly, the connection performance of the inserting rods and the well wall is improved, and the fixing effect of the sleeve is further improved.
Optionally, the driving assembly includes a threaded rod, a sleeve, a push block and a guide member, and the threaded rod, the sleeve, the push block and the sleeve are coaxially arranged;
the sleeve is sleeved on the threaded rod and is in threaded connection with the threaded rod;
the pushing block is sleeved on the sleeve and fixedly connected with the sleeve, the pushing block is positioned in the inner cavity of the sleeve, the pushing block comprises a cylindrical section and a circular truncated cone section which are integrally arranged, and one end of the insertion rod extending into the inner cavity of the sleeve is abutted against the side wall of the circular truncated cone section;
the guide is used for moving the sleeve along the axial direction of the threaded rod.
By adopting the technical scheme, the threaded rod is rotated, under the action of the guide piece, the threaded rod drives the sleeve to move along the axial direction of the threaded rod, the sleeve drives the push block to slide along the inner cavity of the sleeve, in the sliding process of the push block, firstly, the small end of the circular truncated cone section is contacted with the insertion rod, the circular truncated cone section pushes the insertion rod to move towards one side far away from the inner cavity of the sleeve, and the insertion rod moves into the wall of the oil well; the driving assembly of design is convenient for drive peg graft pole and slides along the groove that slides, and then makes the peg graft pole insert the oil well wall of a well in, realizes sheathed tube rigidity.
Optionally, the sleeve comprises an installation part, a clamping part and a rotation part which are arranged in sequence from high to low, and the installation part, the clamping part and the rotation part are coaxially arranged;
the pushing block is positioned in the inner cavity of the clamping part, and the cylindrical section is connected with the clamping part in a sliding manner;
joint portion is kept away from installation department one end with rotation portion rotates to be connected, just threaded rod one end with rotation portion fixed connection, the other end passes joint portion stretches into in the installation department inner chamber.
By adopting the technical scheme, the sleeves which are arranged in sections drive the rotating part to rotate through the threaded rod, so that the uneven rock wall of the oil well is polished, the well wall of the oil well tends to be flat, and the plugging mechanism is convenient to plug the oil well; the clamping part is convenient for installing the inserting rod and the push block.
Optionally, the blocking mechanism comprises an upper pressure plate, a lower pressure plate and a rubber plug;
the lower pressing plate is fixedly connected with one end, close to the mounting portion, of the clamping portion, the sleeve penetrates through the lower pressing plate and extends into the inner cavity of the mounting portion, and the sleeve is connected with the lower pressing plate in a sliding mode;
one end of the sleeve extending into the inner cavity of the mounting part is fixedly connected with the upper pressure plate, a pressure groove used for the upper pressure plate to slide is formed in the mounting part, and the pressure groove is formed in the axial direction of the mounting part;
the rubber plug is sleeved on the sleeve, and the rubber plug is located between the upper pressing plate and the lower pressing plate.
By adopting the technical scheme, the threaded rod is rotated, under the action of the guide piece, the threaded rod drives the sleeve to move along the axis direction of the threaded rod, the sleeve drives the push block to move, the push block pushes the insertion rod to slide along the sliding groove, the sleeve continues to move after the insertion rod is inserted into the well wall of the oil well and drives the upper pressure plate to move downwards, the upper pressure plate applies force to the rubber plug, and the distance between the upper pressure plate and the lower pressure plate is reduced due to the fixed position of the lower pressure plate, so that the rubber plug is extruded and expanded, the rubber plug is tightly abutted against the well wall of the oil well, and the oil well is sealed; the plugging mechanism of design is through adjusting the distance between top board and the holding down plate, is convenient for block up the application of force to rubber through top board and holding down plate for rubber blocks up and takes place the extrusion bulging, realizes that rubber blocks up and the oil well wall of a well supports tightly, and then realizes that rubber blocks up the shutoff to the oil well.
Optionally, a sealing rubber ring is sleeved on the peripheral wall of the upper pressure plate.
Through adopting above-mentioned technical scheme, the sealing rubber ring of design has improved the sealing performance between top board and the installation department, has avoided liquid entering installation department inner chamber in the oil well.
Optionally, the guide piece includes an at least guide bar, guide bar one end with top board fixed connection, offer in the joint portion and be used for the guide way that the guide bar slided, the guide way is followed the axial direction setting of joint portion.
By adopting the technical scheme, in the process that the threaded rod drives the sleeve to move downwards, the sleeve drives the upper pressure plate to move downwards, and the upper pressure plate drives the guide rod to slide along the guide groove; the guide piece of design is convenient for to the sleeve direction for the sleeve moves along the axial direction of threaded rod.
Optionally, the clamping portion comprises a connecting section, a linkage part and a plurality of limiting sections for abutting against the wall of the oil well;
the plurality of limiting sections are uniformly distributed along the circumferential direction of the sleeve, and the sliding grooves are positioned on the limiting sections;
the connecting section is provided with a limiting groove for sliding of the limiting section, and the limiting groove is arranged along the radial direction of the clamping part;
the linkage piece is connected with the insertion rod and drives the limiting section to move towards one side far away from the inner cavity of the clamping part.
By adopting the technical scheme, in the process that the inserting rod moves along the sliding groove, the inserting rod applies force to the linkage piece, the linkage piece drives the limiting section to slide along the limiting groove, and the limiting section slides until the limiting section is abutted against the wall of the oil well, so that the position of the limiting section is fixed, and further the position of the sleeve is fixed; the connecting section of the clamping part is used for installing the lower pressing plate and the rotating section, so that the rotating section is conveniently and rotatably connected with the connecting section, and meanwhile, the position fixation of the lower pressing plate is realized; the spacing section is used for abutting against the wall of the oil well, and the connection performance of the sleeve and the wall of the oil well is improved.
Optionally, the linkage piece comprises a guide sliding block;
a guide sliding groove used for sliding of the guide sliding block is formed in the groove wall of the sliding groove, and the guide sliding groove is formed along the length direction of the sliding groove;
the guide sliding block is fixedly connected with the side wall of the insertion rod and comprises a first motion stage and a second motion stage;
in the first motion stage, the guide slide block slides along the guide sliding groove to drive the insertion rod to be inserted into the wall of the oil well;
and in the second motion stage, the guide slide block is abutted against the groove wall of the guide sliding groove, and the guide slide block drives the limiting section to slide along the limiting groove so as to drive the limiting section to be abutted against the wall of the oil well.
By adopting the technical scheme, the threaded rod is rotated, under the action of the guide rod and the guide groove, the threaded rod drives the sleeve to move along the axis direction of the threaded rod, the sleeve drives the push block to slide along the inner cavity of the sleeve, the small end of the circular platform section is firstly contacted with the insertion rod in the sliding process of the push block along the inner cavity of the sleeve, the side wall of the circular platform section is abutted against the insertion rod, the circular platform section pushes the insertion rod to slide along the sliding groove along with the downward movement of the circular platform section along the inner cavity of the sleeve, the insertion rod drives the guide sliding block to slide along the guide sliding groove until the insertion rod is inserted into the well wall, and when the guide sliding block is abutted against the well wall, the insertion rod continues to move along the sliding groove, the guide sliding block drives the limiting section to move until the limiting section is abutted against the well wall of the oil well, so that the position of the sleeve is fixed; the designed linkage piece is convenient for applying force to the limiting section through the guide sliding block, so that the guide sliding block drives the limiting section to slide along the limiting groove, the limiting section is tightly abutted against the wall of the oil well, and the position fixation of the sleeve is further realized.
Optionally, the linkage member further includes a first return spring for driving the insertion rod to move towards one side of the inner cavity of the sleeve; the first reset spring is positioned in the guide sliding groove, one end of the first reset spring is connected with the guide sliding block, and the other end of the first reset spring is connected with the groove wall of the guide sliding groove.
By adopting the technical scheme, the designed first reset spring is convenient for driving the insertion rod to move towards one side of the inner cavity of the clamping part, so that the insertion rod is reset, and the oil well is unblocked; meanwhile, the insertion rod and the push block are in a butt joint state, the push block is convenient to drive the insertion rod to slide along the sliding groove, and the insertion of the insertion rod and the wall of the oil well is achieved.
Optionally, a limiting slide block is arranged on the limiting section, a limiting slide groove used for sliding of the limiting slide block is formed in the connecting section, the limiting slide groove is communicated with the limiting groove, the limiting slide groove is arranged along the radial direction of the clamping portion, and a second reset spring used for driving the limiting slide block to move to one side of the inner cavity of the clamping portion is arranged in the limiting slide groove.
Through adopting above-mentioned technical scheme, the spacing section of drive of being convenient for resets of second reset spring of design for spacing section resumes to initial position under natural state, and spacing section and linkage segment surface tend to levelly and smoothly, and the plugging device of being convenient for is along the lift of oil well, simultaneously, the reuse of the plugging device of being convenient for.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the designed petroleum drilling plugging device, when the surface of the well wall of the oil well is flat, the plugging rods are uniformly inserted into the well wall of the oil well, so that the sleeve and the well wall of the oil well are fixed; when the surface of the well wall of the oil well is uneven, the insertion rods can be inserted into uneven positions of the well wall of the oil well, so that the plurality of insertion rods tend to be stressed uniformly, the connection performance of the insertion rods and the well wall is improved, and the fixing effect of the sleeve is further improved;
2. according to the designed oil drilling plugging device, the guide sliding block drives the limiting section to slide along the limiting groove through the linkage piece, so that the limiting section is conveniently abutted against the wall of the oil well, and meanwhile, the insertion rod is firstly inserted and fixed with the wall of the oil well and then the limiting section is abutted against the wall of the oil well through the sliding connection of the guide sliding block and the guide sliding groove, so that the position fixation of a sleeve is realized;
3. the designed oil drilling plugging device drives the rotating part to rotate through the threaded rod, so that the uneven rock wall of the oil well is polished, the well wall of the oil well tends to be flat, and the plugging mechanism is convenient to plug the oil well; the clamping part is convenient for installing the opposite insertion connecting rod and the push block.
Drawings
Fig. 1 is a schematic overall structure diagram of an oil drilling plugging device according to embodiment 1 of the present application.
Fig. 2 is a sectional view of the oil drilling plugging device according to embodiment 1 of the present application.
Fig. 3 is an enlarged schematic view of a portion a of fig. 2.
Fig. 4 is an enlarged schematic view of a portion B of fig. 2.
Description of reference numerals: 1. a sleeve; 11. an installation part; 111. pressing a groove; 12. a clamping part; 121. a connecting section; 122. a limiting section; 123. a linkage member; 1231. a guide chute; 1232. a guide slider; 1233. a first return spring; 13. a rotating part; 131. a rotating section; 132. an extension section; 2. a limiting mechanism; 21. a drive assembly; 211. a motor; 212. a threaded rod; 213. a sleeve; 214. a guide member; 2141. a guide rod; 2142. a guide groove; 2143. closing up the baffle ring; 2144. flaring bosses; 215. a push block; 2151. a cylindrical section; 2152. a circular table section; 22. a plug rod; 221. a plug section; 222. a slipping section; 23. a sliding groove; 24. a limiting groove; 25. a limiting slide block; 26. a second return spring; 27. a limiting chute; 3. a plugging mechanism; 31. an upper pressure plate; 32. rubber blocking; 33. a lower pressing plate; 34. a waist-shaped groove; 35. and sealing the rubber ring.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses oil drilling plugging device.
Referring to fig. 1, the petroleum drilling plugging device comprises a casing 1, a limiting mechanism 2 for fixing the position of the casing 1 and a plugging mechanism 3 for plugging an oil well; the sleeve 1 comprises a mounting part 11, a clamping part 12 and a rotating part 13 which are arranged in sequence from high to low, wherein the mounting part 11, the clamping part 12 and the rotating part 13 are coaxially arranged; joint portion 12 is kept away from 11 one end of installation department and is rotated with rotation portion 13 and is connected, rotation portion 13 includes rotation section 131 and the section 132 of stretching into of a body coupling in this application, rotate section 131 and stretch into the coaxial setting of section 132, and rotate section 131 and be connected with joint portion 12 rotation, stretch into section 132 by being close to rotate section 131 one end to keeping away from rotation section 131 one end cross sectional area and reduce gradually, stretch into section 132 in this embodiment and be the setting of inversion round platform form to be convenient for joint portion 12 stretches into the oil well.
Referring to fig. 2 and 3, the plugging mechanism 3 includes an upper pressing plate 31, a lower pressing plate 33, and a rubber plug 32; the sleeve 1, the upper pressure plate 31, the lower pressure plate 33 and the rubber plug 32 are coaxially arranged, the lower pressure plate 33 is welded with one end, close to the mounting portion 11, of the clamping portion 12, and the diameter of the lower pressure plate 33 is the same as that of the clamping portion 12; one end of the sleeve 213, which extends into the mounting portion 11, is welded with the upper pressure plate 31, a pressure groove 111 for the upper pressure plate 31 to slide is formed in the mounting portion 11, and the pressure groove 111 is arranged along the axial direction of the mounting portion 11, so that the upper pressure plate 31 can move along the axial direction of the mounting portion 11; a sealing rubber ring 35 is sleeved on the peripheral wall of the upper pressure plate 31, and the upper pressure plate 31 is bonded with the sealing rubber ring 35; the rubber plug 32 is sleeved on the sleeve 213, and the rubber plug 32 is located between the upper pressing plate 31 and the lower pressing plate 33; the upper pressing plate 31 moves downwards to extrude the rubber plug 32, so that the rubber plug 32 expands and tightly abuts against the wall of the oil well, and the oil well is plugged.
Referring to fig. 2 and 4, the limiting mechanism 2 includes a driving assembly 21 and a plurality of plugging rods 22 for being inserted into the well wall, the number of the plugging rods 22 in the present application may be three, four, or five, but it is only necessary to realize that the plugging rods 22 can be inserted into the well wall and fix the position of the casing 1, the number of the plugging rods 22 in this embodiment is four, the four plugging rods 22 are uniformly distributed along the circumferential direction of the casing 1, and each plugging rod 22 is arranged along the radial direction of the casing 1, so that the four plugging rods 22 can be conveniently inserted into the well wall to realize the position fixation of the casing 1; the insertion rod 22 comprises a sliding section 222 and an insertion section 221 which are integrally connected, the sliding section 222 and the insertion section 221 are coaxially arranged, and the cross-sectional area of the insertion section 221 is gradually reduced from one end close to the sliding section 222 to one end far away from the sliding section 222; offer the groove 23 that slides that is used for the section 222 that slides on the joint portion 12, and the groove 23 that slides sets up along the radial direction of sleeve pipe 1, and the groove 23 that slides is the same with peg graft pole 22 quantity, and peg graft section 221 is coniform setting in this embodiment to peg graft pole 22 inserts the oil well lateral wall along the groove 23 that slides.
Referring to fig. 2 and 4, the driving assembly 21 is used for driving the insertion rod 22 to slide along the sliding groove 23; the driving assembly 21 comprises a threaded rod 212, a sleeve 213, a push block 215 and a guide 214, wherein the threaded rod 212, the sleeve 213, the push block 215 and the sleeve 1 are coaxially arranged; the sleeve 213 is sleeved on the threaded rod 212, the sleeve 213 is in threaded connection with the threaded rod 212, the sleeve 213 penetrates through the lower pressing plate 33 and extends into the inner cavity of the mounting part 11, and the sleeve 213 is connected with the lower pressing plate 33 in a sliding manner; the pushing block 215 is sleeved on the sleeve 213, the pushing block 215 is fixedly connected with the sleeve 213, the pushing block 215 is located in the inner cavity of the clamping portion 12, the pushing block 215 comprises a cylindrical section 2151 and a circular truncated cone section 2152 which are integrally connected, the cylindrical section 2151 is located above the circular truncated cone section 2152, the cylindrical section 2151 and the circular truncated cone section 2152 are coaxially arranged, the cylindrical section 2151 is connected with the clamping portion 12 in a sliding mode, the cross-sectional area of the circular truncated cone section 2152 is gradually reduced from one end close to the cylindrical section 2151 to one end far away from the cylindrical section 2151, one end, far away from the inserting section 221, of the sliding section 222 extends into the inner cavity of the clamping portion 12, and one end, extending into the inner cavity of the clamping portion 12, of the sliding section 222 abuts against the side wall of the circular truncated cone section 2152; the sliding groove 23 is arranged along the radial direction of the clamping part 12, and the sliding groove 23 is communicated with the inner cavity of the clamping part 12; threaded rod 212 one end is kept away from with rotation section 131 and is stretched into section 132 one end fixed connection, and the other end passes joint portion 12 and stretches into installation department 11 inner chamber, and threaded rod 212 stretches into installation department 11 inner chamber one end and installs motor 211, and threaded rod 212 passes through the coupling joint with motor 211.
Referring to fig. 2 and 3, the guide 214 is used to move the sleeve 213 in the axial direction of the threaded rod 212, so that the sleeve 213 moves in the axial direction of the threaded rod 212, the guide 214 includes at least one guide rod 2141, which may be one in this case, two or three, but the guide of the sleeve 213 is achieved, and in this embodiment, two guide rods 2141 are provided, and the two guide rods 2141 are symmetrically distributed about the axis of the threaded rod 212, the guide rods 2141 are axially parallel to the threaded rod 212, one end of the guide rod 2141 is welded to the upper pressing plate 31, a guide groove 2142 for the guide rod 2141 to slide is formed in the clamping portion 12, the guide groove 2142 is arranged along the axial direction of the clamping portion 12, an expanding boss 2144 is welded to one end, away from the upper pressing plate 31, of the guide rod 2141, a closing-up retaining ring 2143 capable of abutting against the expanding boss 2144 is welded to the clamping portion 12, and the closing-up retaining ring 2143 is arranged close to a notch of the guide groove 2142; in addition, in order to enable the guide rod 2141 to slide along the guide groove 2142, the guide rod 2141 penetrates through the rubber plug 32, and the guide rod 2141 is connected with the rubber plug 32 in a sliding manner, in order to avoid overlarge force applied to the guide rod 2141 by the rubber plug 32 in the bulging process, in the application, a waist-shaped groove 34 is formed in the rubber plug 32, the length direction of the waist-shaped groove 34 is the same as the radial direction of the rubber plug 32, and the guide rod 2141 penetrates through the waist-shaped groove 34; the motor 211 drives the threaded rod 212 to rotate, the threaded rod 212 drives the rotating part 13 to rotate, meanwhile, the threaded rod 212 drives the sleeve 213 to move along the axial direction of the threaded rod 212, and the sleeve 213 drives the push block 215 to move, so that the push block 215 slides along the sliding groove 23.
Referring to fig. 2 and 4, the clamping portion 12 includes a connecting section 121, a linkage member 123 and a plurality of limiting sections 122 for abutting against the wall of the oil well; the number of the limiting sections 122 is the same as that of the inserting rods 22, so that the number of the inserting rods 22 is four, the four limiting sections 122 are uniformly distributed along the circumferential direction of the casing 1, each limiting section 122 is correspondingly provided with one sliding groove 23, and one inserting rod 22 is installed; the connecting section 121 is provided with a limiting groove 24 for sliding the limiting section 122, and the limiting groove 24 is arranged along the radial direction of the clamping part 12; in order to limit the range of motion of the limiting section 122, avoid the limiting section 122 to break away from with the linkage segment 121, the welding has the limiting slide block 25 on the limiting section 122 lateral wall, set up the limiting slide groove 27 that is used for the limiting slide block 25 to slide on the limiting section 122, limiting slide groove 27 communicates with limiting groove 24, limiting slide groove 27 sets up along the radial direction of joint portion 12, be provided with the second reset spring 26 that is used for driving limiting slide block 25 to move to joint portion 12 inner chamber one side in the limiting slide groove 27, the cell wall welding of second reset spring 26 one end and limiting slide groove 27, the other end welds with limiting slide block 25.
Referring to fig. 4, the linkage 123 is connected to the inserting rod 22, the linkage 123 drives the limiting section 122 to move to a side away from the inner cavity of the clamping portion 12, the linkage 123 includes a guide slider 1232 and a first return spring 1233 for driving the inserting rod 22 to move to a side of the inner cavity of the casing 1, a guide sliding groove 1231 for sliding the guide slider 1232 is formed in a wall of the sliding groove 23, the guide sliding groove 1231 is arranged along a length direction of the sliding groove 23, the guide slider 1232 is welded to a side wall of the inserting rod 22, the guide slider 1232 includes a first movement stage and a second movement stage, the first movement stage is that the guide slider 1232 slides along the guide sliding groove 1231 to drive the inserting rod 22 to be inserted into a well wall of the oil well; in the second motion stage, the guide block 1232 drives the limiting section 122 to slide along the limiting groove 24, so as to drive the limiting section 122 to abut against the well wall of the oil well; the threaded rod 212 is driven to rotate by the motor 211, under the action of the guide rod 2141, the threaded rod 212 drives the sleeve 213 to move along the axial direction of the threaded rod 212, and the sleeve 213 drives the push block 215 to move, firstly, the round platform section 2152 abuts against the sliding section 222, along with the downward movement of the round platform section 2152, the length of the inserting rod 22 extending out of the sliding groove 23 is gradually increased, so that the inserting section 221 is inserted into the side wall of the oil well, the round platform section 2152 continues to move downwards, the sliding section 222 drives the guide slider 1232 to move, the guide slider 1232 drives the limiting section 122 to move, so that the limiting section 122 moves towards one side of the well wall of the oil well, so that the abutting of the limiting section 122 and the well wall of the oil well is realized, and under the condition that the casing 1 is not centered in the oil well, because the depth of the inserting rod 22 into the well wall of the oil well is different, when the limiting section 122 contacts with the well wall of the oil well, the limiting section 122 acts on the inserting rod 22, so that the axis of the casing 1 coincides with the axis of the well; the first return spring 1233 is located in the guide sliding groove 1231, and one end of the first return spring 1233 is welded to the guide sliding block 1232, and the other end is welded to the groove wall of the guide sliding groove 1231.
The implementation principle of the petroleum drilling plugging device of the embodiment of the application is as follows: the motor 211 is adjusted, the motor 211 drives the threaded rod 212 to rotate, under the action of the guide rod 2141, the threaded rod 212 drives the sleeve 213 to move along the axial direction of the threaded rod 212, and the sleeve 213 drives the push block 215 to move, firstly, the round platform section 2152 is in contact with the sliding section 222, as the round platform section 2152 moves downwards, the length of the insertion rod 22 extending out of the sliding groove 23 is gradually increased, so that the insertion section 221 is inserted into the side wall of the oil well, the round platform section 2152 continues to move downwards, the sliding section 222 drives the guide block 1232 to move, the guide block 1232 drives the limit section 122 to move, so that the limit section 122 moves towards one side of the well wall, and further the limit section 122 is abutted against the well wall, and the insertion rod 22 is abutted against the cylindrical section 2151, the threaded rod 212 continues to rotate, the sleeve 213 drives the upper press plate 31 to slide along the press groove 111, applies force to the rubber plug 32, because the distance between the upper press plate 31 and the lower press plate 33 is reduced, the circumferential side of the rubber plug 32 is expanded, and the plugging of the well wall of the oil well is realized.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (6)
1. The oil drilling plugging device comprises a casing (1), and is characterized by further comprising a limiting mechanism (2) and a plugging mechanism (3);
the limiting mechanism (2) comprises a driving assembly (21) and a plurality of inserting rods (22) used for being inserted into the wall of an oil well, the inserting rods (22) are uniformly distributed along the circumferential direction of the sleeve (1), a sliding groove (23) used for sliding the inserting rods (22) is formed in the sleeve (1), the sliding groove (23) is formed in the radial direction of the sleeve (1), and the number of the sliding groove (23) is the same as that of the inserting rods (22);
the driving component (21) is used for driving the insertion rod (22) to slide along the sliding groove (23);
the plugging mechanism (3) is used for plugging an oil well;
the driving assembly (21) comprises a threaded rod (212), a sleeve (213), a pushing block (215) and a guide piece (214), and the threaded rod (212), the sleeve (213), the pushing block (215) and the sleeve (1) are coaxially arranged;
the sleeve (213) is sleeved on the threaded rod (212), and the sleeve (213) is in threaded connection with the threaded rod (212);
the pushing block (215) is sleeved on the sleeve (213), the pushing block (215) is fixedly connected with the sleeve (213), the pushing block (215) is located in the inner cavity of the sleeve (1), the pushing block (215) comprises a cylindrical section (2151) and a circular truncated cone section (2152) which are integrally arranged, and one end, extending into the inner cavity of the sleeve (1), of the insertion rod (22) is abutted to the side wall of the circular truncated cone section (2152);
the guide (214) is used for moving the sleeve (213) along the axial direction of the threaded rod (212);
the sleeve (1) comprises an installation part (11), a clamping part (12) and a rotating part (13) which are arranged in sequence from high to low, wherein the installation part (11), the clamping part (12) and the rotating part (13) are coaxially arranged;
the push block (215) is positioned in the inner cavity of the clamping part (12), and the cylindrical section (2151) is connected with the clamping part (12) in a sliding manner;
one end, far away from the installation part (11), of the clamping part (12) is rotatably connected with the rotating part (13), one end of the threaded rod (212) is fixedly connected with the rotating part (13), and the other end of the threaded rod penetrates through the clamping part (12) and extends into an inner cavity of the installation part (11);
the clamping part (12) comprises a connecting section (121), a linkage piece (123) and a plurality of limiting sections (122) which are used for abutting against the wall of the oil well;
the limiting sections (122) are uniformly distributed along the circumferential direction of the sleeve (1), and the sliding grooves (23) are positioned on the limiting sections (122);
the connecting section (121) is provided with a limiting groove (24) for the sliding of the limiting section (122), and the limiting groove (24) is arranged along the radial direction of the clamping part (12);
the linkage piece (123) is connected with the insertion rod (22), and the linkage piece (123) drives the limiting section (122) to move towards one side far away from the inner cavity of the clamping part (12);
the linkage (123) comprises a guide slider (1232);
a guide sliding groove (1231) for the guide sliding block (1232) to slide is formed in the groove wall of the sliding groove (23), and the guide sliding groove (1231) is arranged along the length direction of the sliding groove (23);
the guide sliding block (1232) is fixedly connected with the side wall of the insertion rod (22), and the guide sliding block (1232) comprises a first motion stage and a second motion stage;
in the first motion stage, the guide slide block (1232) slides along the guide chute (1231) to drive the insertion rod (22) to be inserted into the wall of the oil well;
and in the second motion stage, the guide block (1232) is abutted to the groove wall of the guide chute (1231), and the guide block (1232) drives the limiting section (122) to slide along the limiting groove (24), so that the limiting section (122) is abutted to the well wall of the oil well.
2. Oil drilling plugging device according to claim 1, characterized in that the plugging mechanism (3) comprises an upper pressure plate (31), a lower pressure plate (33) and a rubber plug (32);
the lower pressing plate (33) is fixedly connected with one end, close to the mounting part (11), of the clamping part (12), the sleeve (213) penetrates through the lower pressing plate (33) and extends into the inner cavity of the mounting part (11), and the sleeve (213) is connected with the lower pressing plate (33) in a sliding mode;
one end of the sleeve (213) extending into the inner cavity of the mounting part (11) is fixedly connected with the upper pressure plate (31), a pressure groove (111) for the sliding of the upper pressure plate (31) is formed in the mounting part (11), and the pressure groove (111) is arranged along the axial direction of the mounting part (11);
the rubber plug (32) is sleeved on the sleeve (213), and the rubber plug (32) is located between the upper pressing plate (31) and the lower pressing plate (33).
3. The oil drilling plugging device according to claim 2, wherein a sealing rubber ring (35) is sleeved on the peripheral wall of the upper pressure plate (31).
4. The oil drilling plugging device according to claim 2, wherein the guide member (214) comprises at least one guide rod (2141), one end of the guide rod (2141) is fixedly connected with the upper pressing plate (31), a guide groove (2142) for the guide rod (2141) to slide is formed in the clamping portion (12), and the guide groove (2142) is arranged along the axial direction of the clamping portion (12).
5. Oil drilling lost circulation device according to claim 1, characterized in that the linkage (123) further comprises a first return spring (1233) for driving the plugging rod (22) to move towards the side of the inner cavity of the casing (1); the first return spring (1233) is located in the guide sliding groove (1231), one end of the first return spring (1233) is connected with the guide sliding block (1232), and the other end of the first return spring is connected with the groove wall of the guide sliding groove (1231).
6. The oil drilling plugging device according to claim 1, wherein a limiting sliding block (25) is arranged on the limiting section (122), a limiting sliding groove (27) used for the limiting sliding block (25) to slide is arranged on the connecting section (121), the limiting sliding groove (27) is communicated with the limiting groove (24), the limiting sliding groove (27) is arranged along the radial direction of the clamping portion (12), and a second return spring (26) used for driving the limiting sliding block (25) to move to one side of the inner cavity of the clamping portion (12) is arranged in the limiting sliding groove (27).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210548497.5A CN114635665B (en) | 2022-05-20 | 2022-05-20 | Oil drilling plugging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210548497.5A CN114635665B (en) | 2022-05-20 | 2022-05-20 | Oil drilling plugging device |
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| CN114635665B true CN114635665B (en) | 2022-08-02 |
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| CN115653579B (en) * | 2022-11-04 | 2024-05-14 | 西南石油大学 | Fixing device for stratum pressure rapid measuring instrument |
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| CN114635665A (en) | 2022-06-17 |
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