CN211287528U

CN211287528U - Efficient surface layer pipe drill bit

Info

Publication number: CN211287528U
Application number: CN201922424879.3U
Authority: CN
Inventors: 周强; 王婷婷
Original assignee: Chengdu Xiuyuan Technology Development Co ltd
Current assignee: Chengdu Xiuyuan Technology Development Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-18
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to a drill bit technical field specifically is an efficient stratum of being fit for oil field and drilling, go into the earth's surface drill bit of top layer pipe down, its pivot lower extreme fixedly connected with grinds the roller, it has three at least first mud guide groove to grind the inside even division of roller, grind a plurality of grinding roller sword of the even fixedly connected with in roller outside, under the rotation of pivot, beat the pit and continue to move to the underground with ground through the circular cone, its forwarding roller sword contacts with ground cross section, forwarding roller sword drilling falls the earth of ground cross section, along with the circular cone moves down, wait for forwarding roller to extend to inside the earth completely, partial earth sediment can enter first second mud guide groove and then enter first mud guide groove, earth sediment is respectively from grinding roller upper end blowout and grinding roller lower extreme blowout, it creeps into inefficiency to have solved present oil well top layer pipe, it needs many times to drill into an oil well top layer pipe down, And the speed of discharging mud slag is low, so that good early-stage work is performed for smoothly drilling the surface casing in the next step.

Description

Efficient surface layer pipe drill bit

Technical Field

The utility model relates to a drill bit technical field specifically is an efficient top layer pipe drill bit.

Background

The surface conduit drill bit is a well drilling tool used for drilling an oil well, the drill bit is a main tool for breaking rocks in the well drilling process, a well bore is formed by breaking rocks by the drill bit, the drill bit is a main component of well drilling equipment and mainly used for breaking rocks and forming the well bore, a surface well bore is formed well, and the length of the used time is related to the matching degree between the drill bit and the stratum besides the characteristics of the drilled stratum rocks and the performance of the drill bit; the rotary drill bit is a drill bit commonly used in the petroleum industry at present, and can rotate under the drive of machinery, so that the whole drill bit is driven to perform centripetal motion, and rocks are cracked and broken through cutting and grinding, so that the effect of drilling downwards is achieved.

The existing surface conduit drill bit needs to carry out a plurality of drilling steps according to different depths in the drilling process, different drill bits can be used for drilling in each step, the drill bit needs to be stopped to clean soil and mud residues when the drill bit is drilled to a certain depth, the efficiency is low, the time spent on drilling one well is long, and the drill bit can be accelerated to wear if the soil and mud residues are not cleaned in time.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides an efficient top layer pipe drill bit possesses advantages such as realizing high efficiency drilling and automatic discharge earth sediment, has solved present oil well top layer pipe and has crept into inefficiency, lower one oil well top layer pipe need drill boring many times, and the slow problem of discharge earth sediment speed, has done good earlier stage work for going on next step's top layer sleeve pipe drilling smoothly.

(II) technical scheme

In order to realize the purposes of realizing the high-efficiency drilling and automatically discharging earth slag and the like, the utility model provides a following technical scheme: a high-efficiency surface layer guide pipe drill bit comprises a rotating shaft, wherein a grinding roller is fixedly connected to the lower end of the rotating shaft, at least three first mud guide grooves are uniformly formed in the grinding roller, a plurality of grinding roller cutters are uniformly and fixedly connected to the outer part of the grinding roller, a crushing roller is fixedly connected to the lower end of the grinding roller, at least three second mud guide grooves are uniformly formed in the crushing roller, the second mud guide grooves are communicated with the first mud guide grooves, and a plurality of crushing roller cutters are uniformly and fixedly connected to the outer part of the crushing roller; the crushing roller is characterized in that the lower end of the crushing roller is fixedly connected with an advancing roller, a plurality of advancing roller cutters are uniformly and fixedly connected to the outer portion of the advancing roller, a conical shaft is inserted into the lower end of the advancing roller, the upper end of the conical shaft extends into the rotating shaft, a cone is fixedly connected to the lower end of the conical shaft, and a plurality of stirring cutters are uniformly and fixedly connected to the outer portion of the cone.

Further advantage, the outside threaded connection of pivot has the bolt, the bolt left end extends to the conical shaft inside.

Further advantageously, the outer portion of the rotating shaft is connected with a bolt in a threaded manner, and the left end of the bolt extends into the conical shaft 13.

With further advantage, the upper end of the cone is in contact with the lower end of the advancing roller.

The conical tool has the further advantages that the cone is made of high-hardness alloy wear-resistant steel, and the stirring knife is made of high-strength alloy tool steel.

It is a further advantage that the diameter of the first sludge guide groove is larger than the diameter of the second sludge guide groove, the diameter of the grinding roller is larger than the diameter of the crushing roller, and the diameter of the crushing roller is larger than the diameter of the forwarding roller.

Further advantageously, the first slurry guide groove extends out of the lower end of the grinding roller and the second slurry guide groove extends out of the lower end of the crushing roller.

(III) advantageous effects

Compared with the prior art, the utility model provides an efficient top layer pipe drill bit possesses following beneficial effect: according to the efficient surface guide pipe drill bit, under the rotation of a rotating shaft, pits are formed in the ground through a cone and the ground continuously moves towards the underground, an advancing roller cutter of the efficient surface guide pipe drill bit is in contact with the cross section of the ground, the advancing roller cutter drills soil falling off the cross section of the ground, the advancing roller cutter moves downwards along with the cone until the advancing roller completely extends into the ground, partial soil and soil residues enter a second soil guide groove and then enter a first soil guide groove, and the soil residues are sprayed out from the upper end of a grinding roller and the lower end of the grinding roller respectively; the crushing roller crushes the soil slag, when the crushing roller completely extends into the ground, part of the soil slag can directly enter the first mud guide groove, the soil slag in the first mud guide groove and the soil slag in the second mud guide groove are sprayed out from the upper end of the grinding roller together, the cone continues to move downwards, the grinding roller can be contacted with the cross section of the ground and grinds the soil slag, and finally, the second mud guide groove and the first mud guide groove spray out all the soil slag from the upper end of the grinding roller together; the circular cone wearing and tearing are removable, screw out the bolt, take off the circular cone from the roller lower extreme that advances to take out the circular cone axle from the drill bit is inside, inside the same model circular cone of change back the drill bit, the bolt of screwing can continue to use, has reduced the frequency of changing the drill bit simultaneously and has saved the spending of purchasing the drill bit.

Drawings

FIG. 1 is a schematic view of the whole external structure of the present invention;

fig. 2 is a schematic view of the inside of the structure of the present invention.

In the figure: 1-rotating shaft, 2-first mud guide groove, 3-grinding roller, 4-bolt, 5-grinding roller knife, 6-grinding roller, 7-grinding roller knife, 8-advancing roller, 9-advancing roller knife, 10-second mud guide groove, 11-cone, 12-stirring knife and 13-cone shaft.

Detailed Description

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.

As shown in fig. 1-2, the present embodiment discloses a high efficiency surface layer conduit drill bit, which comprises a rotating shaft 1, a grinding roller 3 is fixedly connected to the lower end of the rotating shaft 1, at least three first mud guide grooves 2 are uniformly formed in the grinding roller 3, a plurality of grinding roller cutters 5 are uniformly and fixedly connected to the outer portion of the grinding roller 3, a crushing roller 6 is fixedly connected to the lower end of the grinding roller 3, at least three second mud guide grooves 10 are uniformly formed in the crushing roller 6, the second mud guide grooves 10 are communicated with the first mud guide grooves 2, a plurality of crushing roller cutters 7 are uniformly and fixedly connected to the outer portion of the crushing roller 6, a forwarding roller 8 is fixedly connected to the lower end of the crushing roller 6, a forwarding roller cutter 9 is uniformly and fixedly connected to the outer portion of the forwarding roller 8, a conical shaft 13 is inserted into the lower end of the forwarding roller 8, the upper end of the conical shaft 13 extends into the rotating shaft 1, a cone 11 is fixedly connected, a plurality of stirring knives 12 are uniformly and fixedly connected to the outer part of the cone 11, the upper end of the cone 11 is in contact with the lower end of the advancing roller 8, a bolt 4 is in threaded connection with the outer part of the rotating shaft 1, the left end of the bolt 4 extends into the conical shaft 13, the lower end of the grinding roller 3 extends out of the first mud guide groove 2, the lower end of the crushing roller 6 extends out of the second mud guide groove 10, the diameter of the first mud guide groove 2 is larger than that of the second mud guide groove 10, the diameter of the grinding roller 3 is larger than that of the crushing roller 6, the diameter of the crushing roller 6 is larger than that of the advancing roller 8, the grinding roller knives 5 are in a wolf tooth shape, the crushing roller knives 7 are in a crescent shape, the advancing roller knives 9 are in a spiral shape, and the stirring knives 12 are in a semicircular;

in the first embodiment, the upper end of the rotating shaft 1 is connected with a drilling mechanism of drilling equipment, the drilling mechanism of the drilling equipment drives the rotating shaft 1 to rotate, the grinding roller 3, the crushing roller 6 and the advancing roller 8 rotate along with the rotation of the rotating shaft 1, the bolt 4 connects the conical shaft 13 with the rotating shaft 1, the conical shaft 13 rotates along with the rotation of the rotating shaft 1, the grinding roller 3, the crushing roller 6 and the grinding roller cutter 5, the crushing roller cutter 7 and the advancing roller cutter 9 which correspond to the outer parts of the advancing roller 8 can also rotate along with the grinding roller cutter, the cone 11 contacts with the ground to drill a pit, the stirring cutter 12 outside the cone 11 can stir the pit, the semi-circular stirring cutter 12 drills and stirs soil to loosen the soil and lay a foundation for the advancing roller 8 to move downwards, when the advancing roller 8 moves downwards to a soil layer, the advancing roller cutter 9 drills the soil, the spiral advancing roller cutter 9 is favorable for pushing the advancing roller 8 to move downwards continuously, the advancing roller cutter 9 crushes the soil slag, the soil slag is discharged out of the periphery of the drill hole along the spiral shape along with the rotation of the advancing roller cutter 9, when the advancing roller 8 completely enters the soil layer, the soil slag enters the second soil guide groove 10 and then enters the first soil guide groove 2, the soil slag is sprayed out from the upper end of the grinding roller 3 under the high-speed rotation of the rotating shaft, wherein a small part of the soil slag is directly sprayed out from the lower end of the grinding roller 3, then the grinding roller 6 is gradually moved into the soil layer, the grinding roller cutter 7 is driven to further drill the soil under the rotation of the grinding roller 6, the grinding roller cutter 7 further crushes the soil, the crescent-shaped grinding roller cutter 7 is beneficial to moving the soil slag upwards and discharging the soil slag, the drill hole is expanded by the grinding roller 6, when the grinding roller 6 completely enters the soil layer, a part of the soil slag directly enters the first soil guide groove 2, the grinding roller 3 rotates to drive the grinding roller cutter 5 to drill soil, the wolf tooth-shaped grinding roller cutter 5 plays a good grinding role, the grinding roller 3 further expands a drill hole, the soil slag is automatically discharged in the whole drilling process, the drill bit does not need to be taken out on the way to manually discharge the soil slag, the drill bit can finish one-time drilling of an oil well, the time for drilling the oil well is reduced to the maximum extent, the efficiency of drilling the oil well is improved, the oil well drilling operation is carried out for a long time, the condition that the cone 11 is easily abraded due to contact with the soil layer under high-speed rotation is avoided, after the cone 11 is abraded, the cone 11 is taken down from the lower end of the advancing roller 8 by only needing to screw out the cone shaft 13, a new cone 11 is inserted back into the drill bit, and the bolt 4 can be continuously used, while reducing the frequency of bit changes and saving the expense of purchasing bits.

In the second embodiment, as shown in fig. 1-2, based on the first embodiment, the cone 11 is made of high-hardness alloy wear-resistant steel, the stirring blade 12 is made of high-strength alloy tool steel, in order to reduce the wear caused by the contact between the cone 11 and the earth formation under high-speed rotation, the wear resistance of the cone 11 can be enhanced by using the high-hardness alloy wear-resistant steel, the high-hardness alloy wear-resistant steel has strong wear resistance to prolong the service life of the cone 11, the high-strength alloy tool steel has strong strength and hardness, the compressive strength and hardness of the stirring blade 12 can be enhanced by using the high-strength alloy tool steel, and the deformation of the stirring blade 12 during drilling can be reduced to prolong the service life of the stirring blade 12.

The embodiments described above employ: the 1-rotating shaft, the 2-first mud guide groove, the 3-grinding roller, the 4-bolt, the 5-grinding roller knife, the 6-grinding roller, the 7-grinding roller knife, the 8-advancing roller, the 9-advancing roller knife, the 10-second mud guide groove, the 11-cone, the 12-stirring knife and the 13-cone shaft can be obtained by market purchase or private customization.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A high efficiency surface layer guide pipe drill bit, comprising a shaft (1), characterized in that: the lower end of the rotating shaft (1) is fixedly connected with a grinding roller (3), at least three first mud guide grooves (2) are uniformly formed in the grinding roller (3), a plurality of grinding roller cutters (5) are uniformly and fixedly connected to the outer part of the grinding roller (3), the lower end of the grinding roller (3) is fixedly connected with a crushing roller (6), at least three second mud guide grooves (10) are uniformly formed in the crushing roller (6), the second mud guide grooves (10) are communicated with the first mud guide grooves (2), and a plurality of crushing roller cutters (7) are uniformly and fixedly connected to the outer part of the crushing roller (6); the crushing roller is characterized in that a forward roller (8) is fixedly connected to the lower end of the crushing roller (6), a plurality of forward roller cutters (9) are uniformly and fixedly connected to the outer portion of the forward roller (8), a conical shaft (13) is inserted into the lower end of the forward roller (8), the upper end of the conical shaft (13) extends into the rotating shaft (1), a cone (11) is fixedly connected to the lower end of the conical shaft (13), and a plurality of stirring cutters (12) are uniformly and fixedly connected to the outer portion of the cone (11).

2. A high efficiency surface pipe drill bit as defined in claim 1, wherein: grinding roller sword (5) are wolf tooth shape, crushing roller sword (7) are crescent shape, advance roller sword (9) are the spiral shape, stirring sword (12) are half toroidal form.

3. A high efficiency surface pipe drill bit as defined in claim 1, wherein: the outer portion of the rotating shaft (1) is in threaded connection with a bolt (4), and the left end of the bolt (4) extends into the conical shaft (13).

4. A high efficiency surface pipe drill bit as defined in claim 1, wherein: the upper end of the cone (11) is contacted with the lower end of the advancing roller (8).

5. A high efficiency surface pipe drill bit as defined in claim 1, wherein: the cone (11) is made of high-hardness alloy wear-resistant steel, and the stirring knife (12) is made of high-strength alloy tool steel.

6. A high efficiency surface pipe drill bit as defined in claim 1, wherein: the diameter of the first sludge guide groove (2) is larger than that of the second sludge guide groove (10), the diameter of the grinding roller (3) is larger than that of the crushing roller (6), and the diameter of the crushing roller (6) is larger than that of the advancing roller (8).

7. A high efficiency surface pipe drill bit as defined in claim 1, wherein: the first sludge guide groove (2) extends out of the lower end of the grinding roller (3), and the second sludge guide groove (10) extends out of the lower end of the crushing roller (6).