CN112282653A - Compensable drill bit assembly and method - Google Patents
Compensable drill bit assembly and method Download PDFInfo
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- CN112282653A CN112282653A CN202011225591.4A CN202011225591A CN112282653A CN 112282653 A CN112282653 A CN 112282653A CN 202011225591 A CN202011225591 A CN 202011225591A CN 112282653 A CN112282653 A CN 112282653A
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- 238000000034 method Methods 0.000 title abstract description 17
- 238000005553 drilling Methods 0.000 claims abstract description 174
- 238000003801 milling Methods 0.000 claims abstract description 72
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 15
- 239000010432 diamond Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
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Abstract
The invention relates to a compensable drilling bit device and a compensable drilling bit method. The technical scheme is as follows: a drilling tool carrier is arranged in a central hole of the drill rod pushing body, and a circulating liquid channel is formed between the drilling tool carrier and the drill rod pushing body; a central consumption body is arranged in a central bearing hole of the drilling tool carrier; the central consumption body is provided with a main drill bit device and a standby drill bit device, and the inner surface of the main drilling and milling drill bit is clamped in a drill bit anti-twisting capacity cutter groove arranged at the tail end of the drill rod advancing body. The beneficial effects are that: according to the invention, a plurality of spare drill bit devices and a main drill bit device are designed to be installed into a drill rod and put into a well for drilling operation at one time, and when the main drill bit device fails, the spare drill bit devices are moved out, so that a new drilling and milling drill bit is formed, and the operation of lifting the drill rod once or for a plurality of times to replace the drill bit is avoided, so that the operation time is greatly reduced, and the effective drilling efficiency is improved; meanwhile, the operation cost is reduced, the economic benefit of well drilling is improved, and the well drilling cost is reduced.
Description
Technical Field
The invention relates to a drilling bit device capable of compensating and a method thereof, in particular to a movable compensating type drilling bit device.
Background
During drilling, the drill bit is the primary tool for breaking rock and the borehole is formed by the drill bit breaking rock. The length of time a wellbore can take to form is related to the degree of mutual matching between the drill bit and the formation, in addition to the characteristics of the rock of the formation being drilled and the properties of the drill bit itself. The reasonable type selection of the drill bit plays an important role in improving the drilling speed and reducing the comprehensive drilling cost. The PDC drill bit is a rock breaking tool widely used in the industries of petroleum and natural gas exploration and development at present, effectively improves a mechanical drilling tool, and shortens the drilling period. However, in actual production, a general oil well is hundreds of meters to thousands of meters or even tens of thousands of meters deep, in this process, although the PDC drill bit is wear-resistant and durable, the problem that the drill rod is repeatedly pulled down due to the abrasion of the drill bit still exists, the drill rod is repeatedly pulled down to replace the drill bit by the depth of thousands of meters or even tens of thousands of meters, a large amount of time is consumed, the effective drilling time is reduced, the drill rod pulling pipe column and the drill rod pulling pipe column are used for most of the time, the time for actually replacing the drill bit is very short, and a large amount of manpower, material resources and financial resources are wasted.
At present, most innovations are used for improving the drill bit, the service life of the drill bit is prolonged, but no one wants to reduce the time for tripping the pipe column, and therefore the time for replacing the drill bit is greatly shortened.
Disclosure of Invention
The invention aims to provide a compensable drilling bit device and a compensable drilling bit method aiming at the defects in the prior art, a new structure carrying one or more than one spare drill bit is adopted, when a main drill bit is worn and scrapped or is close to failure, a drill rod with a short distance is lifted up, the spare drill bit is released to form a new drill bit, and thus, the operation times of pulling out and setting down a pipe column are greatly reduced, a large amount of time is saved, and the effective time of drilling is prolonged.
The invention provides a compensable drilling bit device, which adopts the technical scheme that: comprises a drill rod pushing body (1), a drilling tool carrier (2), a central consuming body (3), a main drilling and milling drill bit (4), a spare drill bit unfolding mechanism (6), a spare drill bit rotating shaft (7), a spare drill bit supporting rod (8), a force transmission torque strip (9), a circulating liquid channel (10), a spare drilling and milling drill bit (11), a drill bit anti-torque containing cutter groove (12), a spare drill bit unfolding movable groove (14), a first drill bit unfolding movable groove (15), a first drill bit unfolding shaft (16), a first supporting rod (17), a first drill bit unfolding spring (18) and a first drill bit rotating shaft (19), the rear end of the drill rod pushing body (1) is provided with an external thread (13) for connecting a drill rod, the drill rod pushing body (1) is provided with a central hole, a drilling tool carrier (2) is arranged in the central hole, and a circulating liquid channel (10) is formed between the drilling tool carrier (2) and the drill rod jack-in body (1); a central bearing hole is formed in the drilling tool carrier (2), a force transmission torque strip (9) is arranged in the central bearing hole, and the central bearing hole is connected with the central consumption body (3) through the force transmission torque strip (9); the central consumption body (3) is provided with a main drill bit device and a standby drill bit device, the main drill bit device at the front end comprises a first drill bit unfolding movable groove (15), a first drill bit unfolding shaft (16), a first supporting rod (17), a first drill bit unfolding spring (18), a first drill bit rotating shaft (19) and a main drilling and milling drill bit (4), the main drilling and milling drill bit (4) is connected to the front end of the center of the central consumption body (3) through the first drill bit rotating shaft (19), the middle part of the main drilling and milling drill bit (4) is connected to the first drill bit unfolding shaft (16) through the first supporting rod (17) and the first drill bit unfolding spring (18), and the first bit-extending shaft (16) moves in the first bit-extending movable slot (15), the inner surface of the main drilling and milling drill bit (4) is clamped in a drill bit torsion-proof containing cutter groove (12) arranged at the tail end of the drill rod pushing body (1), so that the torsion of the main drilling and milling drill bit (4) is improved.
Preferably, the spare drill bit device comprises a spare drill bit unfolding movable groove (14), a spare drill bit unfolding mechanism (6), a spare drill bit rotating shaft (7), a spare drill bit supporting rod (8) and a spare drilling and milling drill bit (11), wherein the spare drilling and milling drill bit (11) is connected with the spare drill bit rotating shaft (7) through the spare drill bit supporting rod (8), the middle part of the spare drilling and milling drill bit (11) is matched with the spare drill bit unfolding movable groove (14) through the spare drill bit unfolding mechanism (6), and the spare drill bit unfolding mechanism (6) is compressed to enable the spare drilling and milling drill bit (11) to be arranged on the upper part of the force transmission torque strip (9) of the center hole.
Preferably, the spare drilling devices are provided in a plurality of groups and are assembled in sequence on the central consumption body (3).
Preferably, be equipped with circulation constant pressure valve (5) in above-mentioned circulation liquid passageway (10), circulation constant pressure valve (5) are including constant pressure valve body (5.1) and divide constant pressure valve (5.2), and constant pressure valve body (5.1) are ring column structure, and it has a plurality of branch constant pressure valves (5.2) to distribute on constant pressure valve body (5.1).
Preferably, above-mentioned main brill mills drill bit (4) including sword piece body (4.1), a supporting cylinder (4.2), interior oblique tool bit (4.3), outer oblique tool bit (4.4), shaft hole (4.5), main drill bit bracing piece (4.6), sword piece body (4.1) adopts wear-resisting high temperature resistant material to make, and the upper portion of sword piece body (4.1) is equipped with thin thick main drill bit bracing piece (4.6) down, and the upper end of main drill bit bracing piece (4.6) is equipped with shaft hole (4.5), the middle part of sword piece body (4.1) is equipped with a supporting cylinder (4.2) for expand axle (16) and first bracing piece (17) cooperation with first drill bit.
Preferably, one end of the cutter block body (4.1) is provided with an inner inclined cutter head (4.3), and the other end of the cutter block body is provided with an outer inclined cutter head (4.4), so that when the main drilling and milling drill bit (4) is formed by the two cutter block bodies (4.1), the two inner inclined cutter heads (4.3) form the outermost end of the main drilling and milling drill bit (4), and the two outer inclined cutter heads (4.4) form a structure parallel to the drill rod jacking body (1).
Preferably, the knife block body (4.1) is in a strip-shaped structure, and diamonds are embedded on the surface of the knife block body.
Preferably, the drill bit bearing body (3) comprises a bearing body (3.1) and a rotating shaft movable groove (3.2), and a plurality of rotating shaft movable grooves (3.2) and a spare drill bit unfolding movable groove (14) are arranged on the cylindrical bearing body (3.1).
Preferably, the drill carrier (2) comprises a carrier body (2.1) and spare cutter block expansion slots (2.2), and a plurality of spare cutter block expansion slots (2.2) are formed in the cylindrical carrier body (2.1).
The invention provides a use method of a drilling bit device capable of compensating, which adopts the technical scheme that the use method comprises the following steps:
assembly of a compensable drill bit assembly: firstly, assembling a movable compensator, namely assembling a main drill bit device and a standby drill bit device on a central consumption body (3) to form a whole A and waiting for the next assembling process; connecting the force-transmitting torque strips (9) through screws, assembling the force-transmitting torque strips into the inner cavity of the drilling tool carrier (2), and welding the force-transmitting torque strips and the drilling tool carrier together; adjusting the pressure of the circulating constant pressure valve (5) by using a pressure testing machine, and then welding the circulating constant pressure valve (5) on the outer wall of the drilling tool carrier (2) to form a whole B; thirdly, the whole B is arranged in the drill rod jacking body (1) and is firmly welded to form a whole C; the whole A is arranged in the whole C, and a cutter block body (4.1) in the main drill bit device is changed into a main drilling and milling drill bit (4) through debugging, so that the device is assembled;
secondly, when normal drilling is carried out, the compensable drilling bit device is put into the well through a drill rod to carry out drilling operation, when normal drilling is carried out, the pressure of a drilled body and the drill rod is utilized to enable the main drilling and milling bit (4) to be positioned in a bit torsion-proof cutter groove (12) at the end part of the drill rod advancing body (1), the drill rod advancing body (1) and the force transmission torque strip (9) are utilized as a force applying body of the main drilling and milling bit (4), so that the rotation of the drill rod advancing body (1) can form strong torque on the main drilling and milling bit (4), the main drilling and milling bit (4) is utilized to carry out milling and drilling, liquid passing through the circulating constant pressure valve (5) is utilized to circulate, and drill cuttings are washed out to the ground in the form of mud;
thirdly, actively compensating the drill bit operation: when the drilling efficiency is reduced or the main drill bit device is completely failed, namely the working main drilling and milling drill bit (4) is worn out, at the moment, the drilling pipe column is lifted up, under the action of liquid pressure, the circulating constant pressure valve (5) has certain opening pressure, so that the center consuming body (3) bears the standby drill bit device to move downwards, two standby cutter block bodies at the lowest end in the standby drill bit device extend out of the drill rod jacking body (1), at the moment, the drill rod is rotated at the well mouth, the originally failed center consuming body (3) is disconnected at the lower part of the first drill bit unfolding movable groove (15), then the drill rod is stopped to rotate, the drill rod is moved downwards continuously, the whole drill rod is pressed downwards to enable the two cutter block bodies for drilling and milling to be positioned in the drill bit torsion-proof accommodating cutter groove (12) at the end part of the drill rod jacking body (1) to become a new drilling and milling drill bit, and continuous drilling is realized until the standby drill bit devices are completely exhausted, and then the drill rod and the drill bit device are lifted out of the wellhead to be replaced integrally.
Preferably, the spare drill bit device is deployed as follows:
firstly, because a drilling string with a certain distance is lifted, the bottom of a drill bit is away from the bottom of a well by a certain distance for compensating the drill bit, so that when liquid is injected from a well mouth and is pressurized, because a drilling tool carrier (2) is fixedly connected with a drill rod advancing body (1), a central consuming body (3) can move downwards, a cutter block body on a failed main drill bit device can be separated from a drill bit torsion-proof accommodating cutter groove (12) of the drill rod advancing body (1), at the moment, the drill rod is rotated from the well mouth, the failed main drill bit device can be disconnected from the lower part of a first drill bit unfolding movable groove (15) of the central consuming body (3), the drill rod is stopped to be rotated, and the drill rod is continuously moved downwards, so that a first spare drill bit device can be moved downwards;
secondly, because reserve sword piece expansion tank (2.2) have been seted up on drilling tool carrier (2), reserve brill mills drill bit (11) under the effect of reserve drill bit expansion mechanism (6), two sword piece bodies are followed reserve sword piece expansion tank (2.2) respectively and are expanded, and reserve drill bit pivot (7) can expand movable trough (14) sliding fit along reserve drill bit, then, lift the drilling rod a little, the tip of two sword piece bodies touches together, the drilling rod is transferred again and is made sword piece body block at drill bit anti-torque capacity sword groove (12) of drilling rod jack-up body (1) end, form new brill mills drill bit, accomplish the compensation of reserve drill bit device and switch.
The invention has the beneficial effects that: the invention designs one or more than one spare drill bit devices and a main drill bit device which are arranged in a drilling rod and put into a well for drilling operation at one time, when the main drill bit device fails, a drilling pipe column with a small distance can be lifted, so that the bottom of the drill bit is away from the bottom of the well by a small distance for compensating the drill bit, liquid is pumped from the well mouth to ensure that a center consumes and can move downwards, and the spare drill bit device is moved out, thereby forming a new drilling and milling drill bit to continue drilling operation, avoiding the operation of lifting the drilling rod for replacing the drill bit once or for a plurality of times, greatly reducing the operation time and improving the effective drilling efficiency; meanwhile, the operation cost is reduced, the economic benefit of well drilling is improved, and the well drilling cost is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure A-A of FIG. 1;
FIG. 3 is a partial schematic view of the circulation constant pressure valve;
FIG. 4 is a schematic structural view of a drill rod jack-in body;
FIG. 5 is a schematic diagram of the structure of the central expendable;
FIG. 6 is a schematic view of the structure of the drill carrier;
FIG. 7 is a schematic structural diagram of a main drilling and milling bit;
in the upper diagram: the drilling rod pushing-in body 1, the drilling tool carrier 2, the center consuming body 3, the main drilling and milling drill bit 4, the circulating constant pressure valve 5, the standby drill bit unfolding mechanism 6, the standby drill bit rotating shaft 7, the standby drill bit supporting rod 8, the force transmission torque strip 9, the circulating liquid channel 10, the standby drilling and milling drill bit 11, the drill bit torsion-proof cutter groove 12, the external thread 13, the standby drill bit unfolding movable groove 14, the first drill bit unfolding movable groove 15, the first drill bit unfolding shaft 16, the first supporting rod 17, the first drill bit unfolding spring 18, the first drill bit rotating shaft 19, the bearing body 3.1, the rotating shaft movable groove 3.2, the cutter block body 4.1, the supporting cylinder 4.2, the inner inclined cutter head 4.3, the outer inclined cutter head 4.4, the shaft hole 4.5, the main drill bit supporting rod 4.6, the constant pressure valve body 5.1, the partial constant pressure valve 5.2, the sphere seal 5.2.1, the partial constant pressure valve body 5.2.2, the pressure regulating spring 5.2.3 and.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to the attached drawing 1, the spare drill bit device comprises a spare drill bit unfolding movable groove 14, a spare drill bit unfolding mechanism 6, a spare drill bit rotating shaft 7, a spare drill bit supporting rod 8 and a spare drilling and milling drill bit 11, wherein the spare drilling and milling drill bit 11 is connected with the spare drill bit rotating shaft 7 through the spare drill bit supporting rod 8, the middle part of the spare drilling and milling drill bit 11 is matched with the spare drill bit unfolding movable groove 14 through the spare drill bit unfolding mechanism 6, and the spare drill bit unfolding mechanism 6 is compressed to enable the spare drilling and milling drill bit 11 to be arranged on the upper part of a force transmission torque strip 9 of a center.
Referring to fig. 2 and 3, a circulation constant pressure valve 5 is arranged in the circulation liquid channel 10, the circulation constant pressure valve 5 comprises a constant pressure valve body 5.1 and a sub constant pressure valve 5.2, the constant pressure valve body 5.1 is of a circular ring structure, and a plurality of sub constant pressure valves 5.2 are distributed on the constant pressure valve body 5.1; wherein, divide constant pressure valve 5.2 including sealed spheroid 5.2.1, divide constant pressure valve body 5.2.2, pressure regulating spring 5.2.3, pressure regulating screw 5.2.4, divide constant pressure valve body 5.2.2 to be equipped with the sap cavity, the entrance of crossing the sap cavity is equipped with the disk seat, sealed spheroid 5.2.1 is laid to disk seat department, sealed spheroid 5.2.1's right-hand member passes through pressure regulating spring 5.2.3 and connects, and be equipped with pressure regulating screw 5.2.4, can carry out the pressure regulating to the constant pressure valve, set up opening pressure.
Referring to the attached drawing 4, the main drilling and milling drill bit 4 comprises a cutter block body 4.1, a supporting cylinder 4.2, an inner inclined cutter head 4.3, an outer inclined cutter head 4.4, a shaft hole 4.5 and a main drill bit supporting rod 4.6, the cutter block body 4.1 is made of wear-resistant high-temperature-resistant materials, the main drill bit supporting rod 4.6 which is thin at the upper part and thick at the lower part is arranged on the upper part of the cutter block body 4.1, the shaft hole 4.5 is arranged at the upper end of the main drill bit supporting rod 4.6, and the supporting cylinder 4.2 is arranged in the middle of the cutter block body 4.1 and is used for being matched with a first drill bit unfolding shaft 16 and.
Preferably, one end of the cutter block body 4.1 is provided with an inner inclined cutter head 4.3, and the other end is provided with an outer inclined cutter head 4.4, so that when the two cutter block bodies 4.1 form the main drilling and milling drill 4, the two inner inclined cutter heads 4.3 form the outermost end of the main drilling and milling drill 4, and the two outer inclined cutter heads 4.4 form a structure parallel to the drill rod advancing body 1.
Preferably, the tool block body 4.1 is a strip-shaped structure, and diamond or other hard alloy is embedded on the surface of the tool block body, so that the hardness of drilling and milling can be improved.
Referring to fig. 6, the drill bit supporting body 3 includes a supporting body 3.1 and a rotating shaft active slot 3.2, a plurality of rotating shaft active slots 3.2 and a standby drill bit unfolding active slot 14 are arranged on the cylindrical supporting body 3.1, the rotating shaft active slot 3.2 is an arc-shaped slot, and a standby drill bit supporting rod can be unfolded along the rotating shaft active slot 6.2.
Referring to fig. 7, the drill carrier 2 includes a carrier body 2.1 and spare blade deployment slots 2.2, and a plurality of spare blade deployment slots 2.2 are formed in the cylindrical carrier body 2.1, so that the blade body can be deployed from the spare blade deployment slots. If necessary, a break guide line may be provided on the central waste body, so that the degree of alignment can be increased when the break guide line is broken.
In addition, the processing requirements of the components of the well drilling drill bit device capable of being compensated are as follows:
firstly, after a drill rod jack-in body is subjected to heat treatment, parts meeting the requirements of a drawing are machined by turning and milling; secondly, processing parts meeting the requirements of drawings by processes of turning, milling, drilling and tapping and the like after the heat treatment of the drilling tool carrier; ③ the center consumes the body: the part is made of eutectoid steel, and is processed by annealing to obtain a part meeting the requirements of a drawing, and then quenching and tempering are carried out to ensure that the part meets the requirements of the drawing; the processing of the drilling and milling cutter block is a hard alloy processing process, and the method comprises the following steps: after molding, the diamond is sintered to obtain the diamond; fifth, circulating a constant pressure valve: after each part is processed, the pressure is regulated according to the requirement, so that the process requirement is met.
The invention provides a use method of a drilling bit device capable of compensating, which adopts the technical scheme that the use method comprises the following steps:
assembly of a compensable drill bit assembly: firstly, assembling a movable compensator, namely assembling a main drill bit device and a standby drill bit device on a central consumption body 3 to form a whole A and waiting for the next assembling process; connecting the force transmission torque strips 9 through screws, assembling the force transmission torque strips in the inner cavity of the drilling tool carrier 2, and welding the force transmission torque strips and the drilling tool carrier together; adjusting the pressure of the circulating constant pressure valve 5 by using a pressure testing machine, and then welding the circulating constant pressure valve 5 on the outer wall of the drilling tool carrier 2 to form a whole B; thirdly, the whole B is arranged in the drill rod jacking body 1 and is firmly welded to form a whole C; the whole A is arranged in the whole C, and a cutter block body 4.1 in the main drill bit device is changed into a main drilling and milling drill bit 4 through debugging, so that the device is assembled;
secondly, when normal drilling is carried out, the compensable drilling bit device is put into the well through a drill rod to carry out drilling operation, when normal drilling is carried out, the pressure of a drilled body and the drill rod is utilized to enable the main drilling and milling bit 4 to be positioned in a bit torsion-proof tool groove 12 at the end part of the drill rod advancing body 1, the drill rod advancing body 1 and the force transmission torque strip 9 are utilized as a force application body of the main drilling and milling bit 4, so that the rotation of the drill rod advancing body 1 can form strong torque on the main drilling and milling bit 4, the drilling and milling are carried out through the main drilling and milling bit 4, liquid passing through the circulating constant pressure valve 5 is utilized for circulation, and drill cuttings are washed out to the ground in the form of mud;
thirdly, actively compensating the drill bit operation: when the drilling efficiency is reduced or the main drill bit device is completely failed, namely the working main drilling and milling drill bit 4 is worn out, the drilling pipe column is lifted up, under the action of the hydraulic pressure, the central consumable body 3 will carry the spare drill bit means downwards, so that two spare cutter block bodies at the lowest end in the spare drill bit device extend out of the drill rod pushing body 1, at the moment, the drill rod is rotated by the well mouth operation, the original failed center consuming body 3 is disconnected at the lower part of the first drill bit unfolding movable groove 15, then the drill rod stops rotating, the drill rod is moved downwards continuously, the whole drill rod is pressed downwards to enable the two cutter block bodies for drilling and milling to be positioned in the drill bit anti-twisting and accommodating cutter groove 12 at the end part of the drill rod advancing body 1 to become a new drilling and milling drill bit, therefore, continuous drilling is realized until a plurality of spare drill bit devices are completely used up, and the drill rod and the drill bit devices are lifted out of a wellhead to be replaced integrally.
In addition, the deployment of the spare bit assembly of the present invention is described in further detail as follows:
firstly, because a drilling string with a certain distance is lifted, the bottom of a drill bit is away from the bottom of a well by a certain distance for compensating the drill bit, so that when liquid is injected from a well mouth and is pressurized, because a drilling tool carrier 2 is fixedly connected with a drill rod advancing body 1, a central consuming body 3 moves downwards, a cutter block body on a failed main drill bit device is separated from a drill bit twisting prevention cutter groove 12 of the drill rod advancing body 1, at the moment, the drill rod is rotated from the well mouth, so that the failed main drill bit device can be disconnected from the lower part of a first drill bit unfolding movable groove 15 of the central consuming body 3, the drill rod is stopped from rotating, the drill rod is continuously moved downwards, and a first spare drill bit device can be moved downwards;
secondly, because the spare cutter block expansion slot 2.2 is formed in the drilling tool carrier 2, the spare drilling and milling bit 11 is expanded from the spare cutter block expansion slot 2.2 under the action of the spare bit expansion mechanism 6, the two cutter block bodies are expanded from the spare cutter block expansion slot 2.2 respectively, the spare bit rotating shaft 7 can be in sliding fit with the spare bit expansion movable slot 14, then the drill rod is lifted slightly, the end parts of the two cutter block bodies are touched together, the drill rod is lowered to enable the cutter block bodies to be clamped in the bit torsion-proof cutter-accommodating slot 12 at the tail end of the drill rod advancing body 1, a new drilling and milling bit is formed, and compensation switching of a spare bit device is completed.
The invention has the beneficial effects that: according to the invention, a plurality of spare drill bit devices and a main drill bit device are designed to be installed on a drill rod and put into a well for drilling operation at one time, when the main drill bit device fails, a drilling pipe column with a certain distance can be lifted, so that the bottom of the drill bit is away from the well bottom by a certain distance of a compensation drill bit, liquid is pumped into the well from the well mouth to ensure that a central consumed object can move downwards, and the spare drill bit device is moved out, so that a new drilling and milling drill bit is formed, the operation of lifting the drill rod once or for a plurality of times to replace the drill bit is avoided, the operation time is greatly reduced, and; meanwhile, the operation cost is reduced, the economic benefit of well drilling is improved, and the well drilling cost is reduced.
Example 2, the difference of the invention from example 1 is:
the spare drill bit devices are arranged in two groups and are sequentially assembled on the central consumption body 3, so that the second spare drill bit device can be started continuously after the main drill bit device and the first spare drill bit device fail in drilling and milling and are scrapped, the structure of the spare drill bit device is the same as that of the first spare drill bit device, and the length of the central consumption body 3 can be increased.
Compared with the embodiment 1, the method has the advantages that the time for lifting and lowering the drill rod at one time is reduced, and the time for one week or even two weeks can be saved if the deep well is more than 5000 meters, so that the drilling time is greatly saved and the drilling efficiency is improved for drilling the deep well.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (7)
1. A compensated drill bit assembly for drilling, comprising: comprises a drill rod pushing body (1), a drilling tool carrier (2), a central consuming body (3), a main drilling and milling drill bit (4), a spare drill bit unfolding mechanism (6), a spare drill bit rotating shaft (7), a spare drill bit supporting rod (8), a force transmission torque strip (9), a circulating liquid channel (10), a spare drilling and milling drill bit (11), a drill bit anti-torque containing cutter groove (12), a spare drill bit unfolding movable groove (14), a first drill bit unfolding movable groove (15), a first drill bit unfolding shaft (16), a first supporting rod (17), a first drill bit unfolding spring (18) and a first drill bit rotating shaft (19), the rear end of the drill rod pushing body (1) is provided with an external thread (13) for connecting a drill rod, the drill rod pushing body (1) is provided with a central hole, a drilling tool carrier (2) is arranged in the central hole, and a circulating liquid channel (10) is formed between the drilling tool carrier (2) and the drill rod jack-in body (1); a central bearing hole is formed in the drilling tool carrier (2), a force transmission torque strip (9) is arranged in the central bearing hole, and the central bearing hole is connected with the central consumption body (3) through the force transmission torque strip (9); the central consumption body (3) is provided with a main drill bit device and a standby drill bit device, the main drill bit device at the front end comprises a first drill bit unfolding movable groove (15), a first drill bit unfolding shaft (16), a first supporting rod (17), a first drill bit unfolding spring (18), a first drill bit rotating shaft (19) and a main drilling and milling drill bit (4), the main drilling and milling drill bit (4) is connected to the front end of the center of the central consumption body (3) through the first drill bit rotating shaft (19), the middle part of the main drilling and milling drill bit (4) is connected to the first drill bit unfolding shaft (16) through the first supporting rod (17) and the first drill bit unfolding spring (18), and the first bit-extending shaft (16) moves in the first bit-extending movable slot (15), the inner surface of the main drilling and milling drill bit (4) is clamped in a drill bit torsion-proof accommodating cutter groove (12) arranged at the tail end of the drill rod tappet body (1), so that the torsion of the main drilling and milling drill bit (4) is improved;
the main drilling and milling drill bit (4) comprises a cutter block body (4.1), a supporting cylinder (4.2), an inner inclined cutter head (4.3), an outer inclined cutter head (4.4), a shaft hole (4.5) and a main drill bit supporting rod (4.6), wherein the cutter block body (4.1) is made of a wear-resistant high-temperature-resistant material, the upper portion of the cutter block body (4.1) is provided with a main drill bit supporting rod (4.6) which is thin and thick, the upper end of the main drill bit supporting rod (4.6) is provided with a shaft hole (4.5), the middle of the cutter block body (4.1) is provided with a supporting cylinder (4.2) and is matched with a first drill bit unfolding shaft (16) and a first supporting rod (17).
2. A compensable drill bit assembly as recited in claim 1, wherein: the spare drill bit device comprises a spare drill bit unfolding movable groove (14), a spare drill bit unfolding mechanism (6), a spare drill bit rotating shaft (7), a spare drill bit supporting rod (8) and a spare drilling and milling drill bit (11), wherein the spare drilling and milling drill bit (11) is connected with the spare drill bit rotating shaft (7) through the spare drill bit supporting rod (8), the middle part of the spare drilling and milling drill bit (11) is matched with the spare drill bit unfolding movable groove (14) through the spare drill bit unfolding mechanism (6), the spare drill bit unfolding mechanism (6) is compressed, and the spare drilling and milling drill bit (11) is arranged on the upper portion of a force transmission torque strip (9) of a center hole.
3. A compensable drill bit assembly as recited in claim 1, wherein: the spare drill bit devices are provided with a plurality of groups and are sequentially assembled on the central consumption body (3).
4. A compensable drill bit assembly as recited in claim 1, wherein: be equipped with circulation constant pressure valve (5) in circulation liquid passageway (10), circulation constant pressure valve (5) are including constant pressure valve body (5.1) and divide constant pressure valve (5.2), and constant pressure valve body (5.1) are the circle annular structure, and it has a plurality of branch constant pressure valves (5.2) to distribute on constant pressure valve body (5.1).
5. A compensable drill bit assembly as recited in claim 1, wherein: one end of the cutter block body (4.1) is provided with an inner inclined cutter head (4.3), the other end of the cutter block body is provided with an outer inclined cutter head (4.4), so that when the main drilling and milling drill bit (4) is formed by the two cutter block bodies (4.1), the two inner inclined cutter heads (4.3) form the outermost end of the main drilling and milling drill bit (4), and the two outer inclined cutter heads (4.4) form a structure parallel to the drill rod jacking body (1).
6. A compensable drill bit assembly according to claim 5, wherein: the knife block body (4.1) is of a strip-shaped structure, and diamonds are embedded on the surface of the knife block body.
7. A compensable drill bit assembly as recited in claim 1, wherein: the drilling tool carrier (2) comprises a carrier body (2.1) and standby cutter block expansion grooves (2.2), and a plurality of standby cutter block expansion grooves (2.2) are formed in the cylindrical carrier body (2.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011225591.4A CN112282653A (en) | 2019-09-30 | 2019-09-30 | Compensable drill bit assembly and method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011225591.4A CN112282653A (en) | 2019-09-30 | 2019-09-30 | Compensable drill bit assembly and method |
| CN201910945049.7A CN110513050B (en) | 2019-09-30 | 2019-09-30 | Movable compensation type drill bit device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910945049.7A Division CN110513050B (en) | 2019-09-30 | 2019-09-30 | Movable compensation type drill bit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112282653A true CN112282653A (en) | 2021-01-29 |
Family
ID=68633071
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910945049.7A Active CN110513050B (en) | 2019-09-30 | 2019-09-30 | Movable compensation type drill bit device |
| CN202011225591.4A Withdrawn CN112282653A (en) | 2019-09-30 | 2019-09-30 | Compensable drill bit assembly and method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910945049.7A Active CN110513050B (en) | 2019-09-30 | 2019-09-30 | Movable compensation type drill bit device |
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| Country | Link |
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| CN (2) | CN110513050B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU935600A1 (en) * | 1980-10-23 | 1982-06-15 | Донецкий государственный проектно-конструкторский и экспериментальный институт комплексной механизации шахт | Outer pipe fishing device |
| CN2121299U (en) * | 1992-03-10 | 1992-11-11 | 厉永明 | Fast-changeable drill bit clamping apparatus |
| US5700113A (en) * | 1994-12-30 | 1997-12-23 | Black & Decker Inc. | Spade-type boring bit and an associated method and apparatus for forming metallic parts |
| CN2490318Y (en) * | 2001-06-20 | 2002-05-08 | 张书华 | Portable gas drawing-off detector |
| CN2740765Y (en) * | 2004-10-22 | 2005-11-16 | 地质矿产部勘探技术研究所 | Fidelity sampling drilling tool |
-
2019
- 2019-09-30 CN CN201910945049.7A patent/CN110513050B/en active Active
- 2019-09-30 CN CN202011225591.4A patent/CN112282653A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN110513050A (en) | 2019-11-29 |
| CN110513050B (en) | 2021-01-26 |
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Application publication date: 20210129 |