CN110671057A - Anti-sticking drill bit with shock resistance - Google Patents
Anti-sticking drill bit with shock resistance Download PDFInfo
- Publication number
- CN110671057A CN110671057A CN201911026317.1A CN201911026317A CN110671057A CN 110671057 A CN110671057 A CN 110671057A CN 201911026317 A CN201911026317 A CN 201911026317A CN 110671057 A CN110671057 A CN 110671057A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- drill
- petal
- shaped
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B17/042—Threaded
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B45/00—Measuring the drilling time or rate of penetration
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model provides an anti-sticking bores drill bit with shock resistance, is connected with the drilling rod through screw-thread fit, comprises screw thread tube head, core accuse connection base, locating pin and drill bit body, and the drill bit body comprises two lamella form brill body units. When the drill bit body normally drills, the cylinder body end of the drill bit body is used as the drill bit operation front end, when the drill bit jamming phenomenon occurs, the core control is connected with a core ball built-in speed sensor linkage controller on a shaft rod in the base, so that the positioning pin relieves the limitation on the petal-shaped drill body units, and the two petal-shaped drill body units are magnetically controlled to rotate in a split mode or in a single rotation mode or in two different directions, so that the drill bit body is in a spiral shape or the hemisphere body end of the drill bit body is used as the drill bit operation front end. In the rotary process of the petal-shaped drill body unit, effective unfreezing is realized by fully utilizing the scraping, grinding, vibrating, reducing and buffering principles, and the hemisphere body end of the drill body becomes the operation front end of the drill bit to enhance the impact effect of the drill bit on stratum rocks, so that the rotary drill body unit has higher engineering practical application value.
Description
Technical Field
The invention relates to an anti-sticking drill bit with impact resistance, namely a drilling tool connected to a drill rod through threads, and belongs to the field of petroleum engineering drilling tool design and manufacture and the technical field.
Background
The drilling bit mainly comprises a drag bit, a roller bit, a diamond bit and a PDC bit. The properties of cutting, grinding, impacting and the like of stratum rocks of each drill bit are different, and the advantages of the drill bits in the actual engineering operation are shown in different rock breaking modes and different costs. In the drilling operation, although the type of the drill bit is optimally selected and the weight and the drilling speed are optimally controlled, the drill bit still blocks due to various reasons such as sand setting, well collapse, falling objects, sand bridges, mud bags and the like during the drilling or lifting process of the drill bit.
Disclosure of Invention
The invention provides a drill bit capable of preventing sticking of a drill bit, which has a scraper on the surface and simultaneously has impact resistance, can better adapt to soft, medium and hard stratums and can effectively solve the problems of sand setting, well collapse, falling objects, sand bridges and mud bags sticking of the drill bit by considering the cutting and impact resistance of stratum rocks and combining the reason of the formation of sticking of the drill bit.
The technical scheme adopted by the invention for solving the technical problems is as follows:
and a drill bit with anti-sticking performance is arranged at the end part of the drill rod. The drill bit consists of a threaded pipe head, a core control connecting base, a positioning pin and a drill bit body. The drill bit body that constitutes by two lamella form bores body unit, one end is the cylinder under normal condition, and the other end is the hemisphere. In the drilling process, when the drill bit normally drills, one end of the cylinder of the drill bit body is used as the operation front end; when the drill jamming phenomenon occurs, the core ball magnetic control petal-shaped drill body unit on the central shaft rod of the core control connection base is turned over in a split mode, and the formed drill bit body is in a spiral shape or one end of a hemisphere of the drill bit body serves as the operation front end. After the jam is released, the core ball magnetic control petal-shaped drill body unit is turned over to restore one end of the cylinder of the drill bit body to be the front running end. The change of the appearance of the drill bit body at the front end of operation enables the drill bit to eliminate the problems of sand setting and drilling clamping, well collapse and drilling clamping, falling object and drilling clamping, sand bridge and mud bag and drilling clamping and the like by utilizing the principles of movement, vibration, friction, scraping, reducing and buffering under the drilling clamping state, thereby achieving effective blockage removal. And one end of the drill bit body in a spiral shape or a hemisphere shape is used as the operation front end, so that the impact resistance of the drill bit in medium and hard strata is greatly enhanced.
The threaded pipe head is matched with the threads of the drill rod to be used for connecting the drill collar and the drill bit, the interior of the threaded pipe head is hollow, and the vertical projection surface of the threaded pipe head is in a circular ring shape.
The core control connection base main body is a cylindrical base, one side end face of the base is provided with a middle shaft rod and a core ball, and the other side end face of the base is integrally connected with the circular ring face of the threaded pipe head. A plurality of hollow holes are uniformly distributed on the cylindrical base and used as flow channels for fluids such as drilling fluid, and the shape of the hole opening is round, square or special. The middle shaft rod is integrated with a core ball thereon, and the core ball has magnetic adsorption performance so as to adsorb the petal-shaped drill body unit wrapped outside the middle shaft rod. And positioning pin grooves with buckles for locking are symmetrically distributed on the maximum cross section of the core ball in the horizontal direction, and the number of the positioning pin grooves is even. The core ball is internally provided with a speed sensor and a controller, the drill bit body keeps in a certain speed range while moving with the drill rod in the drilling process, when the drill bit is blocked and rotated, the speed sensor in the core ball monitors that the rotation or the running speed of the drill bit reaches a lower limit rated value, the controller controls the positioning pin to remove the limitation on the petal-shaped drill body units, and controls the two petal-shaped drill body units wrapped outside the core ball to rotate 180 degrees by taking the core ball as an axis and taking the interface of the two petal-shaped drill body units as a rotating bottom surface, so that the appearance of the drill bit body is changed, and the blockage release is promoted. After the jamming is released, when the speed sensor in the core ball monitors that the rotation or the running speed of the drill bit is restored to the normal speed range, the petal-shaped drill body unit is controlled again to complete the rotation, so that the drill bit body is restored to the shape state before the jamming occurs. The petal-shaped drill body unit controlled by the mandrel rotates in a split manner, and the two petal bodies can rotate while standing or rotating in different directions. Therefore, at the interface of the two petal-shaped drill body units, the operation of the rotation of the two petal-shaped drill body units is controlled in a split manner, the external force effects of grinding, scraping, vibrating and the like are exerted, the substances which are stuck to the drill bit and are generated by sand, mud, falling objects and the like on the drill bit body are removed, and the effective stuck freeing is achieved.
The positioning pin is a pin rod with a buckle, slides in a linear communication groove formed by the core ball pin groove and the petal-shaped drill body unit pin groove, and limits the rotation operation of the core ball magnetic control petal-shaped drill body unit. In the linear communicating groove, when the positioning pin is positioned at the connecting part of the core ball and the petal-shaped drill body unit, the petal-shaped drill body unit is limited in rotation; when the positioning pin is positioned in the pin groove of the petal-shaped drill body unit and is separated from the joint of the core ball and the petal-shaped drill body unit, the rotation limitation of the petal-shaped drill body unit is relieved, and the core ball can rotate in a split manner by the magnetic control petal-shaped drill body unit.
The drill bit body is composed of two petal-shaped drill body units with the same shape, and the interface of the two petal-shaped drill body units and the middle axial plane of the threaded pipe head and the core control connecting base are in the same plane. When the two petal-shaped drill body units are symmetrically combined in the horizontal direction, the shape of the drill body is a vault cylinder, namely one end of the drill body is a hemisphere, the other end of the drill body is a cylinder, and the radius of the cross section of the cylinder and the height of the cylinder are equal to the radius of the hemisphere. The outer surface of the side wall of the end of the cylinder of the drill bit body is uniformly distributed with guide scrapers integrally formed with the cylinder, the scrapers are in a streamline shape along the side wall of the cylinder, and a groove formed between every two adjacent scrapers plays a role in guiding liquid such as drilling fluid and the like, so that the liquid generates rotational flow and is favorable for removing rock fragments at the bottom of a well; the outer surface of the hemispherical end head of the drill bit body is uniformly distributed with particle grinding teeth made of high-hardness materials, and the particle grinding teeth and the hemispherical body are integrally formed. In the drilling process, when the drill bit normally drills, one end of a cylinder of the drill bit body serves as the operation front end, and a scraper on the surface of the cylinder plays roles in shearing and cutting stratum rocks. When the drill jamming phenomenon occurs, the core ball magnetic control petal-shaped drill body unit connected to the central shaft of the base is turned over in a split mode, and the formed drill bit body is in a spiral shape or one end of a hemisphere of the drill bit body serves as the operation front end. The special appearance of spiral drill bit body is equivalent to accomplishing the operation of going up and down and walk the line in the well drilling operation, plays the cushioning effect to the drill bit. The particles on the outer surface of the hemisphere roll and grind stratum rocks, and meanwhile, the hemisphere serving as the operation front end can play a drilling impact effect under the action of a drill rod, so that the crushing of the rocks is facilitated. Furthermore, the helical bit body and one end of the hemisphere of the bit body serve as the operation front end and play a role of reducing and releasing the blockage when contacting with the stratum rock. After the blockage is released, the core control magnetic ball controls the petal-shaped drill body unit to overturn, so that one end of the cylinder of the drill body is recovered to be the front running end. The drill bit body is internally provided with a hollow rod-shaped groove and a hollow spherical groove, the hollow rod-shaped groove corresponds to the shaft lever in the core control connection base, and the hollow spherical groove corresponds to the core ball on the shaft lever in the core control connection base. When the drill bit body is combined with the core control connecting base, the hollow rod-shaped groove and the hollow spherical groove are respectively and tightly attached to a central shaft rod of the core control connecting base and a core ball on a central shaft rod.
The perpendicular projection surface of the petal-shaped drill body units is semicircular, the hollow rod-shaped groove and the hemispherical groove inside the petal-shaped drill body units correspond to the core balls on the central shaft rod and the central shaft rod of the core control connection base respectively, and when the two petal-shaped drill body units are symmetrically combined in the horizontal direction, the formed complete hollow rod-shaped groove and the hollow spherical groove just wrap the core balls on the central shaft rod and the central shaft rod of the core control connection base tightly. The shape of the petal-shaped drill body unit is divided into two parts, one part is 1/4 spheres, the other part is 1/2 cylinders, and the cross section radius of the cylinders and the height of the cylinders are equal to the radius of 1/4 spheres. The 1/4 spheroid part and the 1/2 cylinder part of lamella form brill body unit integrated into one piece, evenly distributed has the locating pin groove of taking buckle locking on the hemisphere and the cylinder structure demarcation cross section, and is unanimous with the locating pin groove quantity and the position that distribute on the biggest cross section of core ball, two parts locating pin groove one-to-one, every group locating pin groove straight line intercommunication. And a positioning pin is arranged in each group of positioning pin grooves, and the locking and unlocking states of the petal-shaped drill body and the core ball are controlled by the movement of the positioning pin in the positioning pin grooves. The petal-shaped drill body unit is controlled by the magnetic adsorption of a core ball on a central shaft rod of the core control connection base, and when the positioning pin is arranged in the positioning pin groove and positioned at the joint of the petal-shaped drill body unit and the core ball, the petal-shaped drill body unit is in a buckle lock. The petal-shaped drill body units rotate 180 degrees by taking the core ball as an axis and taking the interface of the two petal-shaped drill body units as a rotating bottom surface. After the petal-shaped drill body unit rotates to enable the appearance of the drill bit body to change, the positioning pin slides to the joint of the petal-shaped drill body unit and the core ball again in the positioning pin groove, and the petal-shaped drill body unit is in a buckle locking state again. In the drilling process, when the drill bit normally drills, the drill bit body is formed by the two petal-shaped drill body units, the front end of the drill bit in operation is a cylinder, and the other end of the drill bit is a hemisphere. When the drill bit is stuck, if one petal-shaped drill body unit is kept still, the other petal-shaped drill body unit rotates for 180 degrees by taking the mandrel as an axis, and the drill bit body is in a spiral shape; if the two petal-shaped drill body units rotate 180 degrees, the front end of the drill bit is a hemisphere, and the other end of the drill bit is a cylinder.
Compared with the prior art, the appearance of the drill bit body is changed in a mode of split rotation of the core ball magnetic control petal-shaped drill body unit and limitation of the positioning pin. In the process that the appearance of the drill bit body is changed, the principles of scraping, grinding, vibrating, reducing and buffering are fully utilized, the problems of sand setting jamming, well collapse jamming, falling object jamming, sand bridge jamming and mud bag jamming are eliminated, and effective jamming releasing is realized. Moreover, the hemispheroid is used as the operation front end of the drill bit, so that the shock resistance to stratum rocks is enhanced, and the engineering practical applicability is strong.
Drawings
FIG. 1 is a side view of a drill bit with a cylinder as the leading end of the drilling operation.
FIG. 2 is a top view of a core controlled connection mount.
FIG. 3 is a side view of a core controlled connection mount.
Figure 4 is a side view of a lobed drill body unit.
Fig. 5 is a side view of a helical bit body.
FIG. 6 is a side view of a drill bit with a hemisphere as the leading end of the drilling operation.
In the figure: 1. the drilling tool comprises a threaded pipe head, 2 a core control connection base, 3 a drill bit body, 4 a positioning pin, 21 a base, 22 a central shaft rod, 23 a hollow hole, 24 a core ball, 25 a core ball pin groove, 31 a petal-shaped drill body unit, 32 a guide scraper, 33 particle grinding teeth, 34 a core ball groove, 35 a petal-shaped drill body unit pin groove and 36 a central shaft rod groove.
Detailed Description
The anti-sticking drill bit with the shock resistance in the embodiment of the invention consists of a threaded pipe head, a core control connecting base, a positioning pin and a drill bit body, wherein the drill bit body consists of two petal-shaped drill body units.
In the embodiment of the invention, the threaded pipe head is matched with the threads of the drill rod, the interior of the threaded pipe head is hollow, and the vertical projection surface is in a circular ring shape.
In the embodiment of the invention, the core control connecting base main body is a cylindrical base, one side end face of the base is provided with a middle shaft rod and a core ball, and the other side end face is integrally connected with the circular ring face of the threaded pipe head.
In the embodiment of the invention, a plurality of hollow holes are uniformly distributed on the cylindrical base of the core control connection base, and the shape of the hole opening is round, square or special.
In the embodiment of the invention, a central shaft rod of a core control connecting base is integrated with a core ball on the central shaft rod, a speed sensor and a controller are arranged in the core ball, the core ball has magnetic adsorption performance, positioning pin grooves with buckle locking are symmetrically distributed on the maximum cross section of the core ball in the horizontal direction, and the number of the positioning pin grooves is even.
In the embodiment of the invention, the drill bit body is composed of two petal-shaped drill body units with the same shape, and the interface of the two petal-shaped drill body units and the middle axial plane of the threaded pipe head and the core control connecting base are positioned on the same plane.
In the embodiment of the invention, when the two petal-shaped drill body units forming the drill bit body are symmetrically combined in the horizontal direction, the drill bit body is in the shape of a vault cylinder, namely, one end of the drill bit body is a hemisphere, the other end of the drill bit body is a cylinder, and the radius of the cross section of the cylinder and the height of the cylinder are equal to the radius of the hemisphere.
In the embodiment of the invention, the outer surface of the side wall of the end head of the cylinder of the drill bit body is uniformly distributed with the guide scrapers which are integrally formed with the cylinder, the scrapers are in a streamline shape along the side wall of the cylinder, the outer surface of the end head of the hemisphere of the drill bit body is uniformly distributed with the particle grinding teeth made of high-hardness materials, and the particle grinding teeth and the hemisphere are integrally formed.
In the embodiment of the invention, the drill bit body is internally provided with a hollow rod-shaped groove and a hollow spherical groove, the hollow rod-shaped groove corresponds to the shaft lever in the core control connecting base, and the hollow spherical groove corresponds to the core ball on the shaft lever in the core control connecting base.
In the embodiment of the invention, an 1/4 sphere part and a 1/2 cylinder part of a petal-shaped drill body unit are integrally formed, positioning pin grooves with buckles for locking are uniformly distributed on the structural interface of the sphere and the cylinder, the number and the positions of the positioning pin grooves distributed on the maximum cross section of a core ball are consistent, the two positioning pin grooves are in one-to-one correspondence, and each group of positioning pin grooves are linearly communicated.
The embodiment of the invention comprises the following steps:
the drilling speed of the drilling tool in the drilling process is monitored through the speed monitoring sensor, and the controller is linked to execute split rotating operation of the drill body unit when the drilling tool speed suddenly drops to cause the problem of drill sticking, so that the appearance of the drill bit body is changed. A side view of the drill bit in its original state, i.e., with the cylinder as the front end of the drilling operation, is shown in fig. 1; when the drill bit jamming problem occurs, when one of the two petal-shaped drill body units of the drill bit body rotates by 180 degrees and then is in a spiral shape, the side view of the drill bit body is shown in fig. 5; after the two petal-shaped drill body units of the drill body rotate by 180 degrees, the side view of the drill bit with the hemispheroid as the front end of the drilling operation is shown in FIG. 6; the top view and the side view of the core control connecting base are respectively shown in fig. 2 and fig. 3; a side view of the lobed drill body unit is shown in figure 4. One end of a threaded pipe head (1) of the drill bit is matched with the drill rod through threads to realize the connection of the drill bit body (3) and the drill collar, and the other end of the threaded pipe head is integrally connected with the end surface of a cylindrical base (21) of the core control connection base (2). In the drilling process, when a drill bit normally drills, the two petal-shaped drill body units (31) are symmetrically combined in the horizontal direction, so that a central shaft rod groove (36) and a core ball groove (34) which are hollow inside are wrapped outside a central shaft rod (22) of the core control connecting base (2) and a core ball (24) on the central shaft rod (22) and are completely attached to each other. The core ball pin grooves (25) in the radial direction of the core ball (24) correspond to the petal-shaped drill body unit pin grooves (35) one by one to form communicated linear pin grooves. When the locating pin (4) is positioned at the joint of the core ball (24) and the petal-shaped drill body unit (31) in the linear pin groove, the core ball (24) and the petal-shaped drill body unit (31) are locked through the lock catch. At the moment, the front end of the drill body (3) is a cylinder with a guide scraper (32) integrally formed on the outer surface of the side wall, and the other end of the drill body is a hemisphere with a particle grinding tooth (33) integrally formed on the outer surface of the side wall. The guide blades (32) act as shearing and cutting blades on the formation rock. Fluids such as drilling fluid flow into the bottom of the well through the threaded pipe head (1) via the hollow hole (23) in the base (21) of the core control connection base (2) along the outer surface of the hemispherical end of the drill bit body (3), and a guide groove formed between two adjacent guide scrapers (32) on the outer surface of the cylinder at the front end of the operation of the drill bit body (3) is beneficial to forming rotational flow of the fluids so as to carry and remove rock debris at the bottom of the well. A speed sensor arranged in the core ball (24) monitors the running speed of the drill bit, and when the speed suddenly drops and reaches a lower limit value, the occurrence of drill jamming is indicated. The positioning pin (4) is triggered by a built-in controller of the core ball (24) to slide towards the inner part (35) of the pin groove of the petal-shaped drill body unit and completely separate from the pin groove (25) of the core ball, the petal-shaped drill body unit (31) takes the core ball (24) as an axis and takes the interface of the two petal-shaped drill body units (31) as a rotating bottom surface to rotate for 180 degrees, the petal-shaped drill body unit (31) rotates in a single split way to enable the appearance of the drill body (3) to be in a screw shape or two different directions simultaneously to enable the operation front end of the drill body (3) to be converted into a hemisphere, the positioning pin (4) slides to the connecting part of the petal-shaped drill body unit (31) and the core ball (24) again in the linear pin groove, and the petal-shaped drill body unit (31) is locked again by the positioning pin (4) buckle. In the process that the petal-shaped drill body units (31) rotate, substances which are stuck to the drill bit and generated by sand, mud, falling objects and the like on the drill bit body (3) are removed through external force effects of grinding, scraping, vibrating and the like at the interface of the two petal-shaped drill body units (31), and effective stuck freeing is achieved. The special appearance of the spiral drill bit body (3) is equivalent to completing lifting operation routing in the drilling operation, and the spiral drill bit body has a buffering effect on the drill bit; the hemisphere is used as a drill bit body (3) at the operation front end, particle grinding teeth (33) on the outer surface of the hemisphere have grinding and grinding effects on stratum rocks, and meanwhile, the hemisphere as the operation front end can play a drilling impact effect under the action of a drill rod, so that the hemisphere is beneficial to crushing the stratum rocks. Furthermore, the screw-shaped or semi-spherical structure also plays a diameter reduction and stuck release role when the drill bit body (3) at the operation front end is in contact with the stratum rock. After the jam is released, the core ball (24) controls the positioning pin (4) to slide to the inner part of the pin groove (35) of the petal-shaped drill body unit, and the magnetic control petal-shaped drill body unit (31) is overturned to enable one end of the cylinder of the drill body (3) to be used as the operation front end again.
Claims (10)
1. The utility model provides an anti-sticking bores drill bit with shock resistance, comprises screw thread tube head, core accuse connection base, locating pin and drill bit body, and the drill bit body comprises two lamella form brill body units.
2. The anti-seize drill bit of claim 1, further comprising: when the drill bit body normally drills, the cylindrical end of the drill bit body serves as the running front end of the drill bit, when the drill bit jamming phenomenon occurs, the core control connecting base is connected with the core ball control positioning pin on the shaft rod in the base to remove the limitation on the petal-shaped drill body units, the two petal-shaped drill body units are magnetically controlled to rotate in a split mode, the drill bit body is made to be spiral or the hemispherical end of the drill bit body serves as the running front end of the drill bit, effective jamming is achieved by fully utilizing the scraping, grinding, vibrating, reducing and buffering principles in the rotating process of the petal-shaped drill body units, and the hemispherical end of the drill bit body serves as the running front end of the drill bit to enhance the impact effect of the drill bit on stratum rocks.
3. The anti-sticking drill bit with impact resistance of claim 1, wherein the core control connection base body is a cylindrical base, one side end surface of the base is provided with a central shaft rod and a core ball, the other side end surface of the base is integrally connected with the annular surface of the threaded pipe head, a plurality of hollow holes are uniformly distributed on the cylindrical base and used as flow channels for fluids such as drilling fluid, and the shape of the hole is round, square or irregular.
4. The anti-sticking drill bit with impact resistance of claim 3, wherein the core control connection base has a shaft rod integrated with a core ball thereon, the core ball has magnetic adsorption property to adsorb the petal-shaped drill body unit wrapped outside the core ball, positioning pin grooves with snap-in locking are symmetrically distributed on the maximum cross section of the core ball in the horizontal direction, and the number of the positioning pin grooves is even.
5. The drill bit of claim 1, wherein the positioning pin is a pin rod with a snap-fit, the rotation of the core ball magnetically controlled split drill body unit is limited by sliding in a straight communication groove formed by the core ball pin groove and the split drill body unit pin groove, the rotation of the split drill body unit is limited when the positioning pin is located at the joint of the core ball and the split drill body unit, and the rotation limitation of the split drill body unit is released when the positioning pin is separated from the joint of the core ball and the split drill body unit, so that the core ball can be rotated in the split manner by the magnetically controlled split drill body unit.
6. The anti-sticking drill bit with impact resistance as claimed in claim 1, wherein the bit body is composed of two petal-shaped drill body units with the same shape, the interface of the two petal-shaped drill body units and the central axis of the threaded tube head and the core control connection base are on the same plane, when the two petal-shaped drill body units are symmetrically combined in the horizontal direction, the bit body is in the shape of a dome cylinder, namely, one end is a hemisphere, the other end is a cylinder, and the cross section radius of the cylinder and the height of the cylinder are equal to the radius of the hemisphere.
7. The anti-sticking drill bit as claimed in claim 6, wherein the outer surface of the side wall of the cylinder end of the bit body is uniformly distributed with guiding scrapers integrally formed with the cylinder, the scrapers are in streamline shape along the side wall of the cylinder, the groove formed between two adjacent scrapers guides the liquid such as drilling fluid, so that the liquid generates rotational flow and is beneficial to removing rock debris at the bottom of the well, the outer surface of the hemispherical end of the bit body is uniformly distributed with high-hardness particle grinding teeth, and the particle grinding teeth and the hemispherical body are integrally formed.
8. The drill bit as claimed in claim 6, wherein the petal-shaped drill units have a semicircular vertical projection plane, the hollow longitudinal rod-shaped grooves and the hollow hemispherical grooves are respectively corresponding to the core balls on the central shaft and the central shaft of the core control connection base, and when the two petal-shaped drill units are symmetrically combined in the horizontal direction, the formed complete hollow rod-shaped grooves and the hollow spherical grooves just fit the central shaft and the central shaft of the core control connection base to form a good package.
9. The anti-sticking drill bit with impact resistance as claimed in claim 6, wherein the petal-shaped drill body unit is divided into two parts, one part is 1/4 spheres, the other part is 1/2 cylinders, the cross-sectional radius and the height of the cylinders are equal to the radius of 1/4 spheres, the 1/4 sphere part and the 1/2 cylinder part of the petal-shaped drill body unit are integrally formed, positioning pin grooves with snap locks are uniformly distributed on the structural interface of the spheres and the cylinders, the number and the positions of the positioning pin grooves are consistent with those of the positioning pin grooves distributed on the maximum cross section of the core ball, the two positioning pin grooves are in one-to-one correspondence, and each group of the positioning pin grooves are communicated linearly.
10. The anti-sticking drill bit with impact resistance according to claim 6, wherein the petal-shaped drill body units rotate 180 degrees under the magnetic control of the core ball by taking the core ball as an axis and taking the interface of the two petal-shaped drill body units as a rotating bottom surface, the petal-shaped drill body units rotate separately to make the appearance of the drill bit body appear in a spiral shape or two split-type drill body units rotate in different directions simultaneously to convert the operation front end of the drill bit body into a hemisphere, the interface of the two petal-shaped drill body units is subjected to external forces such as grinding, scraping, vibrating and the like during the rotation of the petal-shaped drill body units to remove substances which cause sticking on the drill bit body, such as sand, mud, falling objects and the like, so as to effectively relieve sticking, the special appearance of the spiral drill bit body is equivalent to the completion of lifting operation in the drilling operation to play a role of buffering, the hemisphere serves as the drill bit body at the operation front end, and the grain grinding teeth of the hemisphere roll and grind the formation rock, meanwhile, the hemispheroid as the operation front end can play a drilling impact under the action of a drill rod, and is beneficial to crushing stratum rocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026317.1A CN110671057B (en) | 2019-10-25 | 2019-10-25 | Anti-sticking drill bit with shock resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026317.1A CN110671057B (en) | 2019-10-25 | 2019-10-25 | Anti-sticking drill bit with shock resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110671057A true CN110671057A (en) | 2020-01-10 |
| CN110671057B CN110671057B (en) | 2021-06-01 |
Family
ID=69084089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911026317.1A Active CN110671057B (en) | 2019-10-25 | 2019-10-25 | Anti-sticking drill bit with shock resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110671057B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914791A (en) * | 2021-12-09 | 2022-01-11 | 烟台佑利技术有限公司 | Drilling propeller for oil exploitation and use method thereof |
| CN116104482A (en) * | 2023-04-13 | 2023-05-12 | 山东联合能源管道输送有限公司 | Positioning detection system and detection method for long-distance directional drill of crude oil long-distance pipeline |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203822169U (en) * | 2014-05-19 | 2014-09-10 | 李常林 | Drilling type anchor rod |
| KR20140138397A (en) * | 2013-05-23 | 2014-12-04 | (주)씨엔피텍 | Drilling bit |
| US10100581B1 (en) * | 2015-02-18 | 2018-10-16 | Michael Timte | Rotary drill bit |
-
2019
- 2019-10-25 CN CN201911026317.1A patent/CN110671057B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140138397A (en) * | 2013-05-23 | 2014-12-04 | (주)씨엔피텍 | Drilling bit |
| CN203822169U (en) * | 2014-05-19 | 2014-09-10 | 李常林 | Drilling type anchor rod |
| US10100581B1 (en) * | 2015-02-18 | 2018-10-16 | Michael Timte | Rotary drill bit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914791A (en) * | 2021-12-09 | 2022-01-11 | 烟台佑利技术有限公司 | Drilling propeller for oil exploitation and use method thereof |
| CN113914791B (en) * | 2021-12-09 | 2022-02-25 | 烟台佑利技术有限公司 | Drilling propeller for oil exploitation and use method thereof |
| CN116104482A (en) * | 2023-04-13 | 2023-05-12 | 山东联合能源管道输送有限公司 | Positioning detection system and detection method for long-distance directional drill of crude oil long-distance pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110671057B (en) | 2021-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110671057B (en) | Anti-sticking drill bit with shock resistance | |
| CN103306600B (en) | The axial instrument that spins of a kind of cam-type | |
| CN110905419B (en) | Petroleum drilling tool | |
| CN105178846A (en) | Shock-absorbing rock breaking tool | |
| CN104196456B (en) | PDC drill tool with alternating cutting trajectory | |
| CN105604489B (en) | The positive and negative drill hammer power generator of hydraulic pressure high frequency and application process | |
| CN106150393B (en) | A kind of rotatable drill stem type slipping drilling pipe nipple | |
| AU2019276221A1 (en) | Liquid injection type reamer bit | |
| CN208106331U (en) | Combined type diamond bit with slew buffer structure | |
| CN114033312A (en) | Hydraulic combined mechanical reaming and permeability increasing device and method | |
| CN102536160A (en) | Ball seat type rubber plug system for liner cementing | |
| CN106507861B (en) | Two-tube single action core drill | |
| CN110607993B (en) | Inside and outside convertible anti-sticking drill bit | |
| CN103775010A (en) | Borehole cleaning tool for horizontal-section gas drilling | |
| CN110145241A (en) | A kind of low torque diamond bit suitable for hard formation drilling | |
| CA2426176C (en) | Single-cone rock bit having cutting structure adapted to improve hole cleaning, and to reduce tracking and bit balling | |
| WO2012089142A1 (en) | Combined one cone bit | |
| CN110409999A (en) | A kind of underground aided drilling tool | |
| CN110359856A (en) | Combined type diamond bit with slew buffer structure | |
| CN205025352U (en) | Rock instrument is broken in shock attenuation | |
| CN110725651B (en) | Shell type package anti-sticking coring drill bit | |
| CN206190214U (en) | Hard rock grinds drill bit | |
| CN206368686U (en) | Drill bit radial direction bumper jar | |
| WO2014062415A1 (en) | Methods and system for lubrication pressure relief for a roller cone drill bit | |
| CN105625972A (en) | Variable-diameter drift diameter gauge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |