CN110778274B - Drill bit for petroleum geological exploration and installation method - Google Patents
Drill bit for petroleum geological exploration and installation method Download PDFInfo
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- CN110778274B CN110778274B CN201911192501.3A CN201911192501A CN110778274B CN 110778274 B CN110778274 B CN 110778274B CN 201911192501 A CN201911192501 A CN 201911192501A CN 110778274 B CN110778274 B CN 110778274B
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- drill bit
- cylinder
- fixedly connected
- connecting rod
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- 239000003208 petroleum Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000009434 installation Methods 0.000 title claims abstract description 14
- 238000005553 drilling Methods 0.000 claims abstract description 38
- 230000000903 blocking effect Effects 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000010008 shearing Methods 0.000 claims description 31
- 239000003921 oil Substances 0.000 claims description 24
- 230000007797 corrosion Effects 0.000 claims description 13
- 238000005260 corrosion Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- 239000010941 cobalt Substances 0.000 claims description 12
- 229910017052 cobalt Inorganic materials 0.000 claims description 12
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
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- 238000004372 laser cladding Methods 0.000 description 2
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- 229910003460 diamond Inorganic materials 0.000 description 1
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Images
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
- E21B10/00—Drill bits
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a drill bit for petroleum geological exploration and an installation method thereof, wherein the drill bit comprises a drill cylinder and a drill bit, the bottom of the drill cylinder is provided with an installation hole through which the drill bit passes and is communicated with an inner cylinder of the drill cylinder, and the diameter of the installation hole is smaller than that of the inner cylinder of the drill cylinder; the upper part of the drill bit is fixedly connected with a connecting rod, and the upper end of the connecting rod sequentially passes through the mounting hole and a connecting member arranged in the drill cylinder and extends to the top of the drill cylinder to be fixedly connected with a locking mechanism fixedly connected with the top of the drill cylinder; a blocking boss for preventing the connecting member from descending is arranged in the middle of the drill cylinder, when the connecting member is positioned on the blocking boss, the connecting member is fixedly connected with the inner wall of the drill cylinder, at the moment, the upper end of the drill bit is positioned in the mounting hole, and the lower end of the drill bit is positioned below the drill cylinder; after the drilling is finished, the drill bit is separated from the drill barrel, and the drill barrel is left in the drill hole to be used as a pipe column, so that the steps below the pipe column in the oil exploitation process are reduced, and the oil exploitation efficiency is improved.
Description
Technical Field
The invention relates to the technical field of azimuth petroleum geological exploration machinery, in particular to a drill bit for petroleum geological exploration and an installation method.
Background
At present, with the continuous development of oil exploration technology, drill bits are continuously updated, and the variety of the drill bits is various, such as roller cone drill bits, diamond compact drill bits and the like, and the drill bits are different in order to meet the requirements of oil drilling of different soil layers. The drilling machine for petroleum exploration is a key machine for petroleum exploration and geological field drilling, wherein the drill bit is a tool for crushing a stratum to form a well head, and the quality of each parameter of the drilling machine is directly related to the efficiency of the drilling machine and the overall performance of the drilling machine. A typical use for oil and mineral exploration is a drag bit, which relies primarily on shear to break up the rock formation.
However, when drilling, such as drilling to oil, and extraction is needed, the oil extraction can be performed after the steps of drilling, pipe descending, pipe sealing and the like are newly performed, which brings great inconvenience to the whole oil drilling and extraction and degrades the oil extraction efficiency.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a drill bit for petroleum geological exploration and an installation method, wherein the drill bit can be directly disassembled after drilling, and a drill barrel is used as a pipe column for petroleum exploitation.
In order to achieve the purpose, the invention adopts the following technical scheme that the drill bit for petroleum geological exploration comprises a drill cylinder and a drill bit, wherein the bottom of the drill cylinder is provided with a mounting hole through which the drill bit penetrates and is communicated with an inner cylinder of the drill cylinder, and the diameter of the mounting hole is smaller than that of the inner cylinder of the drill cylinder; the upper part of the drill bit is fixedly connected with a connecting rod, and the upper end of the connecting rod sequentially penetrates through the mounting hole and a connecting member arranged in the drill cylinder and extends to the top of the drill cylinder to be fixedly connected with a locking mechanism fixedly connected with the top of the drill cylinder; the middle part of the drill barrel is provided with a blocking boss for preventing the connecting member from descending, when the connecting member is positioned on the blocking boss, the connecting member is fixedly connected with the inner wall of the drill barrel, at the moment, the upper end of the drill bit is positioned in the mounting hole, and the lower end of the drill bit is positioned below the drill barrel.
The connecting member comprises a connecting body, and the connecting body is provided with a central hole penetrating through the upper end surface and the lower end surface of the connecting body; the middle part of the connecting body is provided with an annular groove which is communicated with the central hole of the connecting body;
a plurality of tiles are arranged in the annular open groove, the end face of each tile close to the central hole is an inclined face, an inner cavity formed by the plurality of tiles after surrounding is a through hole of an inverted cone-shaped pipe, and each tile is fixedly connected with the upper end face and the lower end face of the annular open groove through a sliding device;
the middle part of the connecting rod is fixedly connected with an inverted cone-shaped push block, the inverted cone-shaped push block is inserted into inverted cone-shaped pipe through holes formed by a plurality of tiles, and when the inverted cone-shaped push block moves downwards relative to the tiles, the inverted cone-shaped push block pushes the tiles to move outwards the annular slot, so that the tiles are extruded with the inner barrel of the drill barrel;
a baffle is arranged below the connecting body, the baffle is fixedly connected to the connecting rod, and the diameter of the baffle is larger than that of the central hole and smaller than that of the blocking boss.
The sliding device comprises a base fixedly arranged on the end face of the annular groove, a sliding base is arranged on the base, a sliding groove is formed in the middle of the sliding base, a sliding plate is buckled on the sliding base, a sliding block is arranged at the bottom of the sliding plate, the sliding block is located in the sliding groove and slides along the sliding groove, the sliding block is connected with one side of the sliding groove through an extension spring, a connecting block fixedly connected with a tile is arranged at the top of the sliding plate, and when the tile moves towards the direction of the inner cylinder of the drill cylinder, the extension spring is compressed.
The locking mechanism comprises a supporting cover movably connected to the drill cylinder, a telescopic electric cylinder is fixedly connected to the lower portion of the supporting cover, and the telescopic end of the telescopic electric cylinder is fixedly connected with the top of the connecting rod through a coupler.
The inner wall of connecting the body centre bore is equipped with many bar grooves that link up with the tile medial surface, be equipped with on the outer wall of back taper ejector pad many with bar groove complex bar lug.
The fixed protruding type mounting chamber that is equipped with in both sides of mounting hole, be equipped with a shearing pin in the protruding type mounting chamber, shearing pin one end pass the jack that protruding type mounting chamber and drill bit upper end were equipped with, the thrust plate fixed connection that the other end and protruding type mounting chamber were equipped with, thrust spring fixed connection that thrust plate and protruding type mounting chamber bottom were equipped with.
The diameter of the orifice of the mounting hole is smaller than that of the inner hole, a circular boss clamped at the orifice of the mounting hole is arranged at the upper end of the drill bit, and the insertion hole is formed in the circular boss; the upper end of jack is equipped with cuts the cutting edge, it is equipped with the shearing recess to cut pin upper end, and when cutting the pin and inserting the shearing recess, the cutting edge be located directly over the shearing recess.
The tiles are fixedly connected through the elastic pieces.
The outer side surfaces of the drill cylinder and the drill bit are coated with a layer of corrosion-resistant material, and the corrosion-resistant material comprises the following components: the material is prepared from 94 parts of cobalt-based powder, 5.2 parts of aluminum oxide and 0.8 part of lanthanum oxide; the cobalt-based powder comprises, by weight, 2.1 parts of carbon, 1.1 parts of silicon, 31.8 parts of chromium, 1.3 parts of nickel, 12.5 parts of tungsten and 51.1 parts of cobalt per 100 parts of the cobalt-based powder.
A drill bit mounting method for petroleum geological exploration is carried out according to the following method:
the method comprises the following steps: inserting a connecting rod with an inverted conical push block into the connecting member, and enabling the end part of the connecting rod to extend out of the connecting member, wherein the inverted conical push block enters the connecting member;
step two: fixedly connecting a drill bit to the bottom of the connecting rod, fixedly connecting a telescopic electric cylinder to the top of the connecting rod, and fixing a support cover on the telescopic electric cylinder;
step three: mounting the assembly formed in the second step in a drill cylinder, enabling the connecting member to block the blocking boss, and fixedly connecting the support cover with the top of the drill cylinder;
step four: the flexible electric jar that starts, the flexible end extension of this flexible electric jar drives the connecting rod and continues down, the back taper ejector pad enter into the connecting element and strut the tile in the connecting element, the tile closely contradicts with the inner wall of boring a section of thick bamboo, accomplishes the fixed connection of connecting element and boring a section of thick bamboo, when the connecting rod can not continue down, the drill bit reachs the position of design, accomplishes the installation of whole drill bit for oil geological exploration.
The invention has the beneficial effects that: the drilling device is simple in structure, the drill bit and the drill barrel form the drill bit required by the whole drilling for drilling, after the drilling is completed, when oil exploitation is required or liquid in a drill hole is required to be extracted, the connecting rod is lifted, the connecting member is separated from the drill barrel, the drill bit is separated from the drill barrel at the moment, the connecting member and the drill barrel are completely separated from the drill barrel along with the ascending of the connecting rod, the drill barrel is used as a pipe column when the oil exploitation or the extraction of drilling liquid is performed, the problem that the pipe column needs to be lowered after the drilling is completed at present is solved, the drilling and the pipe column lowering are completed at one time, and the drilling and oil exploitation efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a first schematic view of the combination of the connecting member and the connecting rod according to the present invention;
FIG. 3 is a second schematic structural view of the combination of the connecting member and the connecting rod of the present invention;
FIG. 4 is a schematic axial side view of the connecting member of the present invention;
FIG. 5 is a schematic top view of the connecting member of the present invention;
FIG. 6 is a schematic view of the locking mechanism of the present invention;
FIG. 7 is an enlarged view of the portion A of FIG. 2;
fig. 8 is an enlarged schematic view of the part B in fig. 1.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example 1
The drill bit for petroleum geological exploration shown in figure 1 comprises a drill barrel 1 and a drill bit 2, wherein the drill bit 2 and the drill barrel 1 are both provided with blades for drilling exploration, and the drill barrel 1 and the drill bit 2 are coated with corrosion-resistant materials, so that the drill barrel is prevented from being overlooked when being used as a pipe column for a long time; when drilling, the drill cylinder is fixedly connected with the drill bit 2 relatively, and can drill simultaneously;
the bottom of the drilling barrel 1 is provided with a mounting hole 4 through which the drill bit 2 passes and is communicated with the inner barrel of the drilling barrel 1, and the diameter of the mounting hole 4 is smaller than that of the inner barrel of the drilling barrel 1; when the drill bit 2 is used for drilling, the upper part of the drill bit 2 is positioned in the mounting hole 4 and is relatively fixedly arranged with the mounting hole 4, and the lower end of the drill bit 2 is positioned at the lower end of the drill barrel 1 and is used for performing rock breaking and drilling; the diameter of the mounting hole is smaller than that of the drill cylinder, so that the drill bit can penetrate through the drill cylinder to be fixed in the mounting hole during installation, and can be drawn out of the drill cylinder after drilling is completed; the drill bit is characterized in that the diameter of the orifice of the mounting hole 4 is small, a blocking cylinder is arranged in the orifice of the mounting hole 4, a circular boss 201 is arranged at the upper end of the drill bit 2, a plurality of positioning grooves parallel to the central line of the blocking cylinder are formed in the inner wall of the blocking cylinder, a plurality of positioning blocks matched with the positioning grooves are arranged on the outer surface of the circular boss 201, the positioning blocks are inserted into the positioning grooves, the situation that the drill bit and the drill cylinder rotate relatively is prevented, and more stability in drilling is guaranteed.
The upper part of the drill bit 2 is fixedly connected with a connecting rod 3, and the upper end of the connecting rod 3 sequentially penetrates through a mounting hole 4 and a connecting member 5 arranged in the drill cylinder 1 and extends to the top of the drill cylinder 1 to be fixedly connected with a locking mechanism 6 fixedly connected with the top of the drill cylinder 1; the locking mechanism 6 is used for fixedly connecting the connecting rod 3 with the drill barrel 1, and the drill bit 2 is fixedly connected with the drill barrel when the connecting rod 3 is fixedly connected with the drill barrel 1 because the drill bit 2 is fixedly connected with the connecting rod 3; the connecting component 5 is used for further ensuring the connection between the connecting rod and the drill barrel 2, avoiding the drill bit from drilling relative to the drill barrel during drilling and improving the torsion of the connecting rod;
the middle part of the drill barrel 1 is provided with a blocking boss 8 for preventing the connecting member 5 from descending, when the connecting member 5 is positioned on the blocking boss 8, the connecting member 5 is fixedly connected with the inner wall of the drill barrel 1, at the moment, the upper end of the drill bit 2 is positioned in the mounting hole 4, and the lower end of the drill bit 2 is positioned below the drill barrel 1. The blocking boss 8 is used for preventing the connecting component from going downwards along with the connecting rod and positioning the connecting component 5;
specifically, in the using process, the connecting rod 3 with the drill bit and the connecting member 5 installed is installed downwards from the upper part of the drill barrel 1, when the connecting member 5 reaches the position of the blocking boss 8, the connecting rod 3 continues to descend, at the moment, the connecting rod is fixedly connected with the inner wall of the drill barrel 2 under the action of the descending force of the connecting rod, the drill bit 2 is located at the installation position, when the connecting rod 3 cannot descend at all, the locking mechanism 6 is fixedly connected to the upper part of the drill barrel, the connecting rod 3 is fixedly connected to complete the installation of the whole drill bit, when the drilling is completed and oil extraction is needed, the locking mechanism 6 is detached from the drill barrel, the connecting rod 3 is lifted upwards, the connecting rod 3 takes the drill bit and the connecting mechanism 5 out of the drill barrel along the connecting rod, and the drill barrel with the drill bit, the connecting rod and the connecting mechanism 5 stripped is used for a pipe column for oil extraction or drilling fluid extraction at, the defect that the oil extraction is carried out from a newly pressed pipe column after the drilling is finished is effectively overcome, the oil extraction efficiency is improved, and the oil extraction time is saved.
As shown in fig. 2, 3, 4 and 5, the connecting member 5 includes a connecting body 501, and the connecting body 501 is provided with a central hole penetrating through the upper and lower end surfaces of the connecting body 501; the middle part of the connecting body 501 is provided with an annular groove which is communicated with a central hole of the connecting body 501; the connecting body 501 is cylindrical, and is provided with an annular slot (not marked in the figure) for mounting tiles, wherein the annular slot can separate the connecting body 501 from top to bottom, or the annular slot is composed of a plurality of slots, and a spacing barrier is arranged in the middle of each slot;
a plurality of tiles 502 are arranged in the annular slot, the end surface of each tile 502 close to the central hole is an inclined surface, an inner cavity formed by surrounding the plurality of tiles 502 is an inverted cone-shaped tube through hole 504, and each tile 502 is fixedly connected with the upper end surface and the lower end surface of the annular slot through a sliding device; the tiles 502 are connected in the annular groove through a sliding device, so that the tiles can move inside and outside along the annular groove, the tiles are further guaranteed to be in contact with the inner wall of the drill barrel in an abutting mode, the connecting member is guaranteed to be fixedly connected with the drill barrel, meanwhile, if the annular groove is an integral groove, the tiles 502 can be connected through the elastic piece 516 and then installed in the annular groove, the elastic piece 516 is made of a rigid spring and can sequentially penetrate through the middle of the tiles when in use, all the tiles are fixedly connected, and if the annular groove is composed of a plurality of grooves, one tile is arranged in each groove; the medial surface of all tiles forms and perforates 504 with the back taper pipe, guarantees the middle part fixedly connected with back taper ejector pad 503 of connecting rod 3 can insert this back taper pipe perforation 504 kind, and can with the tile outwards strut with the fixed conflict of inner wall of boring a section of thick bamboo.
Specifically, the inverted cone-shaped push block 503 is inserted into inverted cone-shaped tube through holes 504 formed by a plurality of tiles 502, and when the inverted cone-shaped push block 503 descends relative to the tiles 502, the inverted cone-shaped push block 503 pushes the tiles to move outwards the annular slot, so that the tiles 502 are extruded with the inner cylinder of the drill barrel 1;
a baffle 506 is arranged below the connecting body 501, the baffle 506 is fixedly connected to the connecting rod 3, and the diameter of the baffle 506 is larger than that of the central hole and smaller than that of the blocking boss 8. The baffle 506 place the connection body 501 follow the connecting rod on drop, specifically in the in-process that uses, because baffle 506's effect, the connecting element can not follow the connecting rod on drop, when the below of connecting body falls to the upper surface that blocks boss 8, the connecting rod drive back taper ejector pad 503 continues down, back taper ejector pad 503 enters into back taper pipe perforation 504, promotes the tile is close to the inner wall end of drill pipe, when the surface of tile and the internal surface of drill pipe closely contradict, the connecting rod can not continue down, the drill bit installation is accomplished, when the probing is accomplished, lifts the connecting rod, and the conflict power of the tile of contradicting on the drill pipe inner wall disappears, and connecting element and drill pipe separation this moment, the drill bit separates with the drill pipe promptly.
Further, the inner wall of connecting body 501 centre bore is equipped with many bar grooves 514 that link up with tile 502 medial surface, be equipped with many on the outer wall of back taper ejector pad 503 with bar groove 514 complex bar lug 515, through the cooperation between bar lug and the bar groove, can guarantee tile and back taper ejector pad 503 can not take place relative rotation when the drill bit rotates, take place the condition of skidding, make its more stable of connecting.
Further, in order to ensure that the tiles can slide relative to the annular groove and can be reset when the contact force between the tiles and the inner wall of the drill cylinder is lost, as shown in fig. 7, the sliding device includes a base 507 fixedly arranged on the end surface of the annular groove, a sliding base 508 is arranged on the base 507, a sliding groove 509 is arranged in the middle of the sliding base 508, a sliding plate 510 is fastened on the sliding base 508, a sliding block 511 is arranged at the bottom of the sliding plate 510, the sliding block 511 is positioned in the sliding groove 509 and slides along the sliding groove 509, the sliding block 511 is connected with one side of the sliding groove 509 through a tension spring 512, a connecting block 513 fixedly connected with the tiles 502 is arranged at the top of the sliding plate 510, and when the tiles 502 move towards the inner cylinder direction of the drill cylinder 1, the tension spring 512 is compressed. The connecting block and the tile are fixedly connected, the inverted cone-shaped push block 503 pushes the tile to move towards the direction of the inner wall of the drill barrel, at the moment, the sliding plate relatively slides to the base 508, the extension spring is compressed, and after the conflict force disappears, the compressed extension spring needs to reset to push the tile to move towards the direction of the central hole.
Further, in order to ensure that the downward acting force of the reverse conical push block 503 cannot be changed when the connecting rod is used, the connecting rod can be pressed down constantly, and when the connecting rod is lifted up, the connecting rod can be lifted up automatically, the locking mechanism 6 shown in fig. 6 comprises a support cover 601 movably connected to the drill barrel 1, a telescopic electric cylinder 602 is fixedly connected to the lower portion of the support cover 601, and the telescopic end of the telescopic electric cylinder 602 is fixedly connected to the top of the connecting rod 3 through a coupler 603. When the drill barrel and the drill bit are installed, the telescopic electric cylinder drives the connecting rod to move downwards to prop open the tile, the tile and the drill barrel form a contact force to fixedly connect the drill bit below the drill barrel, when drilling is completed, the telescopic electric cylinder lifts the connecting rod, the contact force between the connecting component and the drill barrel disappears, and the drill barrel is separated from the drill bit.
Further, in order to ensure that the drill bit and the drill barrel can be further connected after being connected through the connecting rod, the stability of the drill bit and the drill barrel is improved, a convex mounting cavity 101 is fixedly arranged on two sides of the mounting hole 4 shown in fig. 8, a shearing pin 102 is arranged in the convex mounting cavity 101, one end of the shearing pin 102 penetrates through the convex mounting cavity 101 and a jack 202 arranged at the upper end of the drill bit 2, the other end of the shearing pin is fixedly connected with a thrust plate 103 arranged in the convex mounting cavity 101, and the thrust plate 103 is fixedly connected with a thrust spring 104 arranged at the bottom of the convex mounting cavity 101.
The diameter of the orifice of the mounting hole 4 is smaller than that of the inner hole, a circular boss 201 clamped at the orifice of the mounting hole 4 is arranged at the upper end of the drill bit 2, and the insertion hole 202 is arranged on the circular boss 201; the upper end of the insertion hole 202 is provided with a shearing blade 203, the upper end of the shearing pin 102 is provided with a shearing groove 105, and when the shearing pin 102 is inserted into the shearing groove 105, the shearing blade 203 is positioned right above the shearing groove 105.
When the drill bit enters the mounting hole 4, the drill bit presses the shearing pin 102 into the convex mounting cavity, when the jack of the drill bit is opposite to the shearing pin 102, the shearing pin 102 is pushed into the jack due to the compressed thrust spring, the drill bit is fixedly connected with the mounting hole, secondary fixed connection is completed, the connection stability of the drill cylinder and the drill bit is ensured, when the drill bit needs to be disassembled, the connecting rod is lifted, the drill bit moves upwards relative to the mounting hole at the moment, the arranged shearing blade collides with the shearing groove, the shearing pin is sheared, the drill bit is separated from the mounting hole, and the disassembly of the drill bit and the mounting hole is completed.
Example 2
In addition to example 1, the surface of the drill casing is damaged when the drill casing is drilled, and when the drill casing is used as a pipe column for a long time, corrosion is likely to occur, and the function of the drill casing cannot reach the service cycle of the pipe column,
for this purpose, the outer side surfaces of the drill barrel 1 and the drill bit 2 are coated with a layer of corrosion-resistant material, which is composed of the following components: the material is prepared from 94 parts of cobalt-based powder, 5.2 parts of aluminum oxide and 0.8 part of lanthanum oxide; the cobalt-based powder comprises, by weight, 2.1 parts of carbon, 1.1 parts of silicon, 31.8 parts of chromium, 1.3 parts of nickel, 12.5 parts of tungsten and 51.1 parts of cobalt per 100 parts of the cobalt-based powder. The corrosion-resistant material prepared from the material has the following advantages: has higher hardness, wear resistance and corrosion resistance, and has lower cracking tendency. The oil drill pipe laser cladding wear-resistant and corrosion-resistant coating material is high in hardness, good in wear resistance and corrosion resistance, and still has good wear resistance and corrosion resistance in a saturated saline mud environment, a coating which is metallurgically combined with the oil drill pipe can be formed on the surface of the oil drill pipe by using the coating material by using a laser cladding technology, the requirement on the specific performance of the surface of the oil drill pipe is met, the oil drill pipe is not easy to corrode in the saturated saline mud environment, the repair cost of the oil drill pipe is reduced, the economic loss is reduced, the strength and the corrosion resistance of a drill barrel and a drill hole are effectively improved, and the service life of a pipe column can be prolonged when the drill barrel is used as the pipe column.
A drill bit mounting method for petroleum geological exploration is carried out according to the following method:
the method comprises the following steps: coating a layer of corrosion-resistant material on the surfaces of a drill bit and a drill barrel, then inserting a connecting rod 3 with an inverted-cone-shaped push block 503 into a connecting member 5, wherein the inverted-cone-shaped push block 503 and the connecting rod are of an integrated structure, the inverted-cone-shaped push block 503 is cast during production, the end part of the connecting rod 3 extends out of the connecting member 5, and the inverted-cone-shaped push block 503 enters the connecting member 5; the inverted cone-shaped push block 503 is positioned at the upper end of the inverted cone-shaped pipe perforation 504 formed by the tile,
step two: fixedly connecting the drill bit 2 to the bottom of the connecting rod 3, fixedly connecting the telescopic electric cylinder 602 to the top of the connecting rod 3, and simultaneously fixing the support cover 601 on the telescopic electric cylinder 602;
step three: mounting the assembly formed in the step two in the drill cylinder 1, enabling the connecting member 5 to block the blocking boss 8, and fixedly connecting the support cover 601 with the top of the drill cylinder 1;
step four: starting the telescopic electric cylinder 602, extending the telescopic end of the telescopic electric cylinder 602 to drive the connecting rod 3 to continue to move downwards, enabling the inverted cone-shaped push block 503 to enter the connecting member 5 to prop open the tile 502 in the connecting member 5, enabling the tile 502 to tightly abut against the inner wall of the drill barrel 1 to complete the fixed connection of the connecting member 5 and the drill barrel 1, and when the connecting rod 3 cannot continue to move downwards, enabling the drill bit 1 to reach the designed position, enabling the shearing pin to enter the slot, completing the fixed connection of the drill bit and the mounting hole, and further completing the installation of the drill bit for the whole petroleum geological exploration;
step five: after drilling is completed, the telescopic end of the telescopic electric cylinder 602 is started to extend and retract to drive the connecting rod to move upwards, the shearing pin is used for pulling up force, the shearing pin is sheared and moves upwards continuously, the inverted cone-shaped push block 503 is separated from the tile, the supporting cover is detached from the drill barrel, the connecting rod, the connecting mechanism and the drill barrel are lifted out of the drill barrel, the rest drill barrel is used for the pipe column, the pipe column is replaced by the drill barrel, and the oil exploitation efficiency is improved.
The above embodiments are merely illustrative of the present invention, and should not be construed as limiting the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (7)
1. The drill bit for petroleum geological exploration is characterized by comprising a drill cylinder (1) and a drill bit (2), wherein the bottom of the drill cylinder (1) is provided with a mounting hole (4) through which the drill bit (2) passes and is communicated with an inner cylinder of the drill cylinder (1), and the diameter of the mounting hole (4) is smaller than that of the inner cylinder of the drill cylinder (1); the upper part of the drill bit (2) is fixedly connected with a connecting rod (3), the upper end of the connecting rod (3) sequentially penetrates through the mounting hole (4) and a connecting member (5) arranged in the drill cylinder (1) and extends to the top of the drill cylinder (1) to be fixedly connected with a locking mechanism (6) fixedly connected with the top of the drill cylinder (1); a blocking boss (8) for preventing the connecting member (5) from descending is arranged in the middle of the drill barrel (1), when the connecting member (5) is positioned on the blocking boss (8), the connecting member (5) is fixedly connected with the inner wall of the drill barrel (1), at the moment, the upper end of the drill bit (2) is positioned in the mounting hole (4), and the lower end of the drill bit (2) is positioned below the drill barrel (1);
the connecting member (5) comprises a connecting body (501), and the connecting body (501) is provided with a central hole penetrating through the upper end surface and the lower end surface of the connecting body (501); the middle part of the connecting body (501) is provided with an annular groove which is communicated with a central hole of the connecting body (501);
a plurality of tiles (502) are arranged in the annular slot, the end faces of the tiles (502) close to the central hole are inclined planes, inner cavities formed by the plurality of tiles (502) after surrounding are inverted-cone-shaped pipe through holes (504), and each tile (502) is fixedly connected with the upper end face and the lower end face of the annular slot through a sliding device;
the middle part of the connecting rod (3) is fixedly connected with an inverted cone-shaped push block (503), the inverted cone-shaped push block (503) is inserted into inverted cone-shaped pipe through holes (504) formed by a plurality of tiles (502), and when the inverted cone-shaped push block (503) moves downwards relative to the tiles (502), the inverted cone-shaped push block (503) pushes the tiles to move outwards towards the annular groove, so that the tiles (502) are extruded with the inner cylinder of the drill barrel (1);
a baffle (506) is arranged below the connecting body (501), the baffle (506) is fixedly connected to the connecting rod (3), and the diameter of the baffle (506) is larger than that of the central hole and smaller than that of the blocking boss (8);
the sliding device comprises a base (507) fixedly arranged on the end face of the annular groove, a sliding base (508) is arranged on the base (507), a sliding groove (509) is formed in the middle of the sliding base (508), the sliding base (508) is buckled with a sliding plate (510), a sliding block (511) is arranged at the bottom of the sliding plate (510), the sliding block (511) is located in the sliding groove (509) and slides along the sliding groove (509), the sliding block (511) is connected with one side of the sliding groove (509) through a tension spring (512), a connecting block (513) fixedly connected with a tile (502) is arranged at the top of the sliding plate (510), and when the tile (502) moves towards the inner cylinder direction of the drilling cylinder (1), the tension spring (512) is compressed;
locking mechanism (6) are including supporting lid (601) of swing joint on a boring section of thick bamboo (1), support lid (601) below fixedly connected with flexible electric jar (602), shaft coupling (603) fixed connection is passed through with the top of connecting rod (3) to the flexible end of flexible electric jar (602).
2. The drill bit for petroleum geological exploration according to claim 1, characterized in that the inner wall of the central hole of the connecting body (501) is provided with a plurality of strip-shaped grooves (514) communicated with the inner side surface of the tile (502), and the outer wall of the inverted cone-shaped push block (503) is provided with a plurality of strip-shaped protrusions (515) matched with the strip-shaped grooves (514).
3. The drill bit for petroleum geological exploration according to claim 1, characterized in that a convex mounting cavity (101) is fixedly arranged on each side of the mounting hole (4), a shear pin (102) is arranged in the convex mounting cavity (101), one end of the shear pin (102) passes through the convex mounting cavity (101) and a jack (202) arranged at the upper end of the drill bit (2), the other end of the shear pin is fixedly connected with a thrust plate (103) arranged in the convex mounting cavity (101), and the thrust plate (103) is fixedly connected with a thrust spring (104) arranged at the bottom of the convex mounting cavity (101).
4. The drill bit for petroleum geological exploration according to claim 3, characterized in that the diameter of the opening of the mounting hole (4) is smaller than that of the inner hole, the upper end of the drill bit (2) is provided with a circular boss (201) clamped in the opening of the mounting hole (4), and the insertion hole (202) is arranged on the circular boss (201); the upper end of jack (202) is equipped with shearing blade (203), shearing pin (102) upper end is equipped with shearing recess (105), and when shearing pin (102) inserted shearing recess (105), shearing blade (203) be located shearing recess (105) directly over.
5. The drill bit for petroleum geological exploration according to claim 1, characterized in that said tiles (502) are fixedly connected by means of elastic members (516).
6. Drill bit for petroleum geological exploration, according to claim 1, characterized in that the outer side of said drilling barrel (1) and said drill bit (2) is coated with a corrosion-resistant material consisting of: the material is prepared from 94 parts of cobalt-based powder, 5.2 parts of aluminum oxide and 0.8 part of lanthanum oxide; the cobalt-based powder comprises, by weight, 2.1 parts of carbon, 1.1 parts of silicon, 31.8 parts of chromium, 1.3 parts of nickel, 12.5 parts of tungsten and 51.1 parts of cobalt per 100 parts of the cobalt-based powder.
7. A drill for petroleum geological exploration, according to claim 1, providing a method of installing a drill for exploration, characterized by the following steps:
the method comprises the following steps: inserting a connecting rod (3) with an inverted conical push block (503) into the connecting member (5), extending the end of the connecting rod (3) out of the connecting member (5), and enabling the inverted conical push block (503) to enter the connecting member (5);
step two: fixedly connecting a drill bit (2) to the bottom of a connecting rod (3), fixedly connecting a telescopic electric cylinder (602) to the top of the connecting rod (3), and simultaneously fixing a support cover (601) on the telescopic electric cylinder (602);
step three: mounting the assembly formed in the step two in a drill cylinder (1), enabling the connecting member (5) to block on the blocking boss (8), and fixedly connecting a support cover (601) with the top of the drill cylinder (1);
step four: start flexible electric jar (602), the flexible end extension of this flexible electric jar (602), drive connecting rod (3) and continue down, back taper ejector pad (503) enter into in connecting elements (5) tile (502) among connecting elements (5) and strut, tile (502) closely contradict with the inner wall of boring a section of thick bamboo (1), accomplish the fixed connection of connecting elements (5) and boring a section of thick bamboo (1), when connecting rod (3) can not continue down, drill bit (1) reachs the position of design, accomplish the installation of whole drill bit for oil geological exploration.
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| CN112211561A (en) * | 2020-09-03 | 2021-01-12 | 祁东县锋速钻探工具有限公司 | Dual-purpose diamond geological drill bit convenient to installation |
| CN114165172B (en) * | 2021-12-14 | 2023-07-25 | 江苏和信石油机械有限公司 | Firm pressure formula is rescued and is used drilling rod and drill bit structure |
| CN117418778B (en) * | 2023-12-14 | 2024-02-23 | 西派集团有限公司 | Petroleum geological survey drilling equipment |
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| US9593534B2 (en) * | 2013-08-07 | 2017-03-14 | Jimmy Edward Toler, Jr. | Axis offset cam tool for reverse circulation exploration drilling systems and method of use thereof |
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| WO2008017452A1 (en) * | 2006-08-07 | 2008-02-14 | Vaillant Geosysteme Gmbh | Drill string and method of making boreholes in the ground |
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