CN113187397B - Guide head deflectable type drill bit for reaming large curvature section of directional drilling and reaming method - Google Patents
Guide head deflectable type drill bit for reaming large curvature section of directional drilling and reaming method Download PDFInfo
- Publication number
- CN113187397B CN113187397B CN202110601191.7A CN202110601191A CN113187397B CN 113187397 B CN113187397 B CN 113187397B CN 202110601191 A CN202110601191 A CN 202110601191A CN 113187397 B CN113187397 B CN 113187397B
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- ball head
- reaming
- shaft
- drill bit
- guider
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Classifications
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock
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- 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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
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- 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
- E21B17/05—Swivel joints
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/064—Deflecting the direction of boreholes specially adapted drill bits therefor
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Abstract
The invention discloses a guide head deflectable drill bit for reaming a large curvature section of a directional drilling hole and a reaming method, wherein the guide head deflectable drill bit comprises a spiral ball head guider, a ball head shaft, a reaming drill bit and an upper joint; the bulb shaft is coaxial with the spiral bulb guider, the shaft end of the bulb shaft is fixedly connected with the spiral bulb guider, the hole expanding drill bit is connected with the bulb end of the bulb shaft, the bulb shaft can incline relative to the hole expanding drill bit, and the upper joint is fixed at the end of the hole expanding drill bit and located between the bulb end of the bulb shaft and the spiral bulb guider. The invention adopts the ball head shaft and the steel balls arranged on the ball head shaft to ensure that the drill bit can deflect, and simultaneously limits the axial displacement and the deflection angle of the drill bit, and the steel balls matched with the grooves can transmit torque, thereby changing the problems that the conventional drill bit is difficult to enter the existing track and is easy to open a new branch drill hole in the large-curvature drilling and reaming construction, and effectively improving the efficiency of reaming and drilling.
Description
Technical Field
The invention belongs to the technical field of directional drilling, and particularly relates to a guide head deflectable drill bit for reaming a large-curvature section of directional drilling, which is used for solving the problem that the conventional reaming drill bit is difficult to ream along the existing directional drilling track and cannot be constructed to a preset stratum area in the large-curvature section of the directional drilling.
Background
The roof high-position directional drilling is an important technical measure for solving gas extraction of a coal seam roof fissure zone and an upper corner. Researches show that the gas extraction effect of the top plate high-position directional drilling is in direct proportion to the diameter of the drilling hole. Therefore, the large-diameter directional long drill hole is widely applied to gas extraction of the coal seam roof fissure zone and the upper corner.
At present, the large-diameter directional drilling is mainly constructed by a directional drilling construction pilot hole and then a step-by-step reaming method through a reaming bit, and is limited by conditions such as equipment capacity, drilling process and the like. The conventional hole expanding drill bit is generally provided with a guide head at the front end and a hole expanding blade at the rear end. The guide head firstly enters a pilot directional drilling hole, and the reaming bit is guided to perform reaming construction along the existing drilling track. This drill has found good application in straight holes and relatively smooth curved holes.
However, because the high-position directional drilling hole is generally constructed in a coal roadway, the high-position directional drilling hole enters a coal seam roof through an upward-facing drilling hole and then horizontally drills into a preset area through adjusting a drilling azimuth angle, a large-curvature deflecting section often exists after the high-position directional drilling hole enters a horizontal section and an azimuth angle adjusting section from an upward-facing section, and during construction of a pilot hole, due to the functions of a screw motor with a bending angle and a directional drill bit with a deflecting function, the large-curvature drilling of the pilot hole is easily realized. However, because the reaming drilling requires that the drill bit has good drilling capability along the existing track, the reaming drill bit guide head has a large length and has a certain cutting capability. During the drilling construction of the large-curvature section, the guide head is easy to deviate from the existing track to drill branch drilling due to the ground layer breakage and the rigidity influence of the guide head, so that the drilling fails.
Therefore, the designer of the invention aims at the problems, researches and designs a guide head deflectable type drill bit for reaming a large-curvature section of a directional drilling hole by combining experience and results of related industries for a long time through careful research and design so as to overcome the defects.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a guide head deflectable drill bit for directional drilling and large-curvature section reaming and a reaming method, so as to solve the defects.
In order to achieve the purpose, the invention adopts the following technical scheme:
a guide head deflectable drill bit for reaming a large curvature section of a directional drilling hole comprises a spiral ball head guider, a ball head shaft coaxial with the spiral ball head guider, a reaming drill bit connected with the ball head end of the ball head shaft, an upper joint and a lower joint, wherein the shaft end of the ball head shaft is fixedly connected with the spiral ball head guider;
the spiral ball head guider comprises a guider body with a central through hole, one end of the guider body is a ball head, the other end of the guider body is a connecting end, a spiral bulge is arranged on the outer wall of the guider body, and the end face of the connecting end of the guider body is an arc-shaped concave surface;
The ball head shaft comprises a ball head end with a central through hole and a shaft end, and a plurality of grooves are formed in the ball head end; the reaming drill bit comprises a drill bit body with a central through hole and a plurality of blades arranged on the outer wall of the drill bit body, wherein the inner wall of the drill bit body is provided with a plurality of axial semi-cylindrical sliding chutes and annular steps, and the middle parts of the annular steps are provided with spherical grooves; the sliding grooves are opposite to the grooves one by one, steel balls are arranged between the sliding grooves and the grooves, and the spherical grooves are matched with the end faces of the ball ends;
the upper joint comprises a joint body, a conical through hole is formed in the center of the joint body, the end face of the large inner diameter end of the joint body is an arc convex surface and matched with the arc concave surface, and the small inner diameter end of the joint body is fixedly connected with the reaming bit; the ball head shaft can be tilted within the range of the conical through hole.
The invention also comprises the following technical characteristics:
specifically, the spiral ball head guider, the ball head shaft and the central through hole of the reaming bit are communicated.
Specifically, weak cutting teeth are arranged on a ball head of the spiral ball head guider; the spiral bulge is welded with a wear-resistant layer, and the outer diameter of the spiral bulge after the wear-resistant layer is welded is slightly smaller than the diameter of the pilot hole.
Specifically, a circular surface surrounded by a plurality of grooves of the ball head shaft is vertical to a central through hole of the ball head shaft; the joint of the shaft end and the ball end of the ball shaft is provided with an annular limiting bulge, the limiting bulge is positioned between the upper joint and the sliding groove, the diameter of the limiting bulge is larger than the inner diameter of the small inner diameter end of the joint body, and the diameter of the limiting bulge is smaller than the diameter of the inner wall of the reaming bit opposite to the limiting bulge.
Specifically, the bulb of bulb axle is served and is equipped with the first conical surface that is close to bulb end face and the second conical surface that is close to the axle head, and the crossing department of first conical surface and second conical surface is circular bead, the recess is the hemisphere recess, and the recess is along circular bead a week equipartition.
Specifically, an included angle between the first conical surface and the second conical surface is an obtuse angle, and the conical degrees of the second conical surface and the conical through hole in the upper joint are the same.
Specifically, cutting teeth and reverse cutting teeth are arranged on the blade, and a water hole in the blade is communicated with a central through hole of the reaming bit.
Specifically, the inner wall of the bit body is sequentially provided with a connecting section, a first inner wall, a second inner wall, an annular step, a third inner wall, a first conical section, a fourth inner wall and a second conical section; the connecting section is connected with the small inner diameter end of the connector body, and the sliding groove is formed in the second inner wall.
Specifically, the spiral ball head guider is in threaded connection with the shaft end of the ball head shaft, and the upper joint is in threaded connection with the reaming bit.
A method for reaming a large-curvature section of directional drilling is realized by the guide head deflectable drill bit and comprises the following steps: the spiral ball head guider enters the pilot hole and guides the reaming bit to perform reaming construction along the existing track of the pilot hole; the ball head shaft and the steel balls arranged on the ball head shaft can ensure that the ball head shaft and the spiral ball head guider deflect, the upper joint limits the axial displacement and the deflection angle of the ball head shaft, and the steel balls matched with the grooves can transmit torque; the spiral ball head guider has weak cutting capability, on one hand, the spiral ball head guider can cut residues in a pilot hole, and simultaneously, a new branch drill hole is prevented from being drilled due to the fact that the cutting capability is too strong; the wear-resistant layer improves the wear-resistant strength of the spiral ball head guider, and simultaneously strengthens the support with the hole wall while ensuring the powder discharge space, so that the reaming bit drills in reaming along the existing track.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention adopts the ball head shaft and the steel balls arranged on the ball head shaft to ensure that the drill bit can be guided to deflect circumferentially, and simultaneously limits the axial displacement and the deflection angle of the drill bit, and the steel balls matched with the grooves can transmit torque, thereby solving the problems that the conventional drill bit is difficult to enter the existing track and is easy to open a new branch drill hole in the large-curvature drilling and reaming construction, and effectively improving the efficiency of reaming and drilling.
The spiral ball head guider has weak cutting capacity, on one hand, the spiral ball head guider can cut residues in a pilot drill hole, and meanwhile, a new branch drill hole is prevented from being drilled due to the fact that the cutting capacity is too strong; the wear-resisting layer improves the wear-resisting strength of the guide head, simultaneously strengthens the support with the hole wall while ensuring the powder discharge space, and is more favorable for the reaming and drilling of the drill bit along the existing drilling track.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a screw ball head guide;
FIG. 3 is a schematic view of the ball pivot deflection of the present invention.
The reference numerals mean:
1. a spiral ball head guider, 2, a ball head shaft, 3, a hole expanding drill bit and 4, an upper joint;
101. the guide comprises a guide body, 102 parts of a ball head, 103 parts of a connecting end, 104 parts of a spiral bulge and 105 parts of weak cutting teeth;
201. The ball head comprises a shaft end 202, a ball head end 203, a limiting bulge 204, a first conical surface 205 and a second conical surface;
301. a bit body, 302, blades, 303, a sliding groove, 304, an annular step, 305, a steel ball, 306, cutting teeth, 307 and reverse cutting teeth;
401. the large inner diameter end, 402, the small inner diameter end.
The invention is described in detail below with reference to the drawings and the detailed description.
Detailed Description
The present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention fall within the protection scope of the present invention. The present invention will be described in further detail with reference to examples.
Example 1:
as shown in fig. 1 to 3, the present embodiment provides a guide head deflectable drill bit for reaming a large curvature section of directional drilling, which includes a screw ball head guide 1, a ball head shaft 2 coaxial with the screw ball head guide 1, a shaft end 201 of the ball head shaft 2 fixedly connected with the screw ball head guide 1, a reamer bit 3 connected with a ball head end 202 of the ball head shaft 2, the ball head shaft 2 being capable of tilting relative to the reamer bit 3, and an upper joint 4 fixed at an end of the reamer bit 3 and located between the ball head end 202 of the ball head shaft 2 and the screw ball head guide 1.
The spiral ball head guider 1 comprises a guider body 101 with a central through hole, one end of the guider body 101 is a ball head 102, the other end of the guider body 101 is a connecting end 103, a spiral protrusion 104 is arranged on the outer wall of the guider body 101, and the end face of the connecting end 103 of the guider body 101 is an arc-shaped concave surface.
The ball head shaft 2 comprises a ball head end 202 and a shaft end 201 of a central through hole, and a plurality of grooves are formed in the ball head end 202; the reaming bit 3 comprises a bit body 301 with a central through hole and a plurality of blades 302 arranged on the outer wall of the bit body 301, a plurality of axial semi-cylindrical sliding grooves 303 and annular steps 304 are arranged on the inner wall of the bit body 301, and a spherical groove is arranged in the middle of each annular step 304; the sliding grooves 303 are opposite to the grooves one by one, steel balls 305 are arranged between the sliding grooves 303 and the grooves, and the spherical grooves are matched with the end faces of the ball head ends 202.
The upper joint 4 comprises a joint body, a conical through hole is formed in the center of the joint body, the end face of the large inner diameter end 401 of the joint body is an arc convex surface and matched with the arc concave surface, and the small inner diameter end 402 of the joint body is fixedly connected with the reaming bit 3; the ball pivot 2 can be tilted in the region of the conical through-hole.
The spiral ball head guider 1, the ball head shaft 2 and the central through hole of the expanding bit 3 are communicated.
A weak cutting tooth 105 is arranged on the ball head 102 of the spiral ball head guider 1; the wear-resistant layer is welded on the spiral protrusion 104, the outer diameter of the spiral protrusion 104 after the wear-resistant layer is welded is slightly smaller than the diameter of the pilot hole, a certain support between the spiral protrusion and a drilling wall is guaranteed, the spiral ball head guider is guaranteed to be located in the center of a drilling hole as much as possible, meanwhile, a certain powder discharging capacity can be guaranteed by the spiral groove between the spiral protrusions, and a small part of drilling fluid can be shunted by the spiral groove to enter the front end of the spiral ball head guider for lubrication.
A circular surface surrounded by a plurality of grooves of the ball head shaft 2 is vertical to the central through hole of the ball head shaft 2; an annular limiting bulge 203 is arranged at the joint of the shaft end 201 and the ball end 202 of the ball end shaft 2, the limiting bulge 203 is positioned between the upper joint 4 and the sliding groove 303, the diameter of the limiting bulge 203 is larger than the inner diameter of the small inner diameter end 402 of the joint body, and the diameter of the limiting bulge 203 is smaller than the diameter of the inner wall of the reamer bit 3 opposite to the limiting bulge 203. The axial displacement of the ball head shaft is limited, and an annular gap between the limiting bulge and the inner wall of the expanding bit is reserved for the inclined space of the ball head shaft.
The ball end 202 of the ball end shaft 2 is provided with a first conical surface 204 close to the end surface of the ball end 202 and a second conical surface 205 close to the shaft end 201, the intersection of the first conical surface 204 and the second conical surface 205 is a circular bead, the grooves are hemispherical grooves, and the grooves are uniformly distributed along the circumference of the circular bead.
The angle between the first tapered surface 204 and the second tapered surface 205 is obtuse, which ensures that the ball head axis can be deviated along the center of the ball head to the direction of 8 or more grooves. The second tapered surface 205 is the same as the taper of the tapered through hole in the upper joint 4.
The blade 302 is provided with a cutting tooth 306 and a reverse cutting tooth 307, and a water hole on the blade 302 is communicated with a central through hole of the reamer bit 3.
The inner wall of the bit body 301 is sequentially provided with a connecting section, a first inner wall, a second inner wall, an annular step 304, a third inner wall, a first conical section, a fourth inner wall and a second conical section; the connecting section is connected with the small inner diameter end 402 of the joint body, and the second inner wall is provided with a sliding groove 303.
The spiral ball head guider 1 is in threaded connection with the shaft end 201 of the ball head shaft 2, and the upper joint 4 is in threaded connection with the reaming bit 3.
Example 2:
the embodiment provides a directional drilling large-curvature section reaming method, which is realized by a guide head deflectable drill bit in the embodiment 1, and the directional drilling large-curvature drilling is realized by a screw motor with a bend angle and a directional drill bit with a deflecting function to obtain a pilot hole; the method comprises the following steps: the spiral ball head guider enters the pilot hole and guides the reaming bit to perform reaming construction along the existing track of the pilot hole; the ball head shaft and the steel balls arranged on the ball head shaft can ensure that the ball head shaft and the spiral ball head guider deflect, the upper joint limits the axial displacement and the deflection angle of the ball head shaft, and the steel balls matched with the grooves can transmit torque; the problems that the conventional drill bit is difficult to enter an existing track and a new branch drill hole is easy to open in the large-curvature drilling and reaming construction are solved, and the efficiency of reaming and drilling is effectively improved. The spiral ball head guider has weak cutting capability, on one hand, the spiral ball head guider can cut residues in a pilot hole, and simultaneously, a new branch drill hole is prevented from being drilled due to the fact that the cutting capability is too strong; the wear-resistant layer improves the wear-resistant strength of the spiral ball head guider, and simultaneously strengthens the support with the hole wall while ensuring the powder discharge space, so that the reaming bit drills in reaming along the existing track.
Claims (9)
1. A guide head deflectable drill bit for reaming a large curvature section of a directional drilling hole is characterized by comprising a spiral ball head guider (1), a ball head shaft (2) coaxial with the spiral ball head guider (1), a shaft end (201) of the ball head shaft (2) fixedly connected with the spiral ball head guider (1), a reaming drill bit (3) connected with a ball head end (202) of the ball head shaft (2), and an upper joint (4) which is fixed at the end part of the reaming drill bit (3), positioned between the ball head end (202) of the ball head shaft (2) and the spiral ball head guider (1), wherein the ball head shaft (2) can be inclined relative to the reaming drill bit (3);
the spiral ball head guider (1) comprises a guider body (101) with a central through hole, one end of the guider body (101) is provided with a ball head (102), the other end of the guider body (101) is provided with a connecting end (103), the outer wall of the guider body (101) is provided with a spiral bulge (104), and the end surface of the connecting end (103) of the guider body (101) is an arc-shaped concave surface;
the ball head shaft (2) comprises a ball head end (202) with a central through hole and a shaft end (201), and a plurality of grooves are formed in the ball head end (202); the reaming bit (3) comprises a bit body (301) with a central through hole and a plurality of blades (302) arranged on the outer wall of the bit body (301), a plurality of axial semi-cylindrical sliding grooves (303) and annular steps (304) are arranged on the inner wall of the bit body (301), and a spherical groove is arranged in the middle of each annular step (304); the sliding grooves (303) are opposite to the grooves one by one, steel balls (305) are arranged between the sliding grooves (303) and the grooves, and the spherical grooves are matched with the end surfaces of the ball head ends (202);
The upper connector (4) comprises a connector body, a conical through hole is formed in the center of the connector body, the end face of the large-inner-diameter end (401) of the connector body is an arc-shaped convex surface and matched with the arc-shaped concave surface, and the small-inner-diameter end (402) of the connector body is fixedly connected with the reaming bit (3); the ball head shaft (2) can be inclined in the range of the conical through hole;
a circular surface defined by the grooves of the ball head shaft (2) is vertical to the central through hole of the ball head shaft (2); the connecting part of the shaft end (201) and the ball end (202) of the ball end shaft (2) is provided with an annular limiting protrusion (203), the limiting protrusion (203) is positioned between the upper joint (4) and the sliding groove (303), the diameter of the limiting protrusion (203) is larger than the inner diameter of the small inner diameter end (402) of the joint body, and the diameter of the limiting protrusion (203) is smaller than the diameter of the inner wall of the reaming bit (3) opposite to the limiting protrusion.
2. The pilot bit deflectable drill bit for reaming large curvature segments of directional drilling according to claim 1, characterized in that the helical ball head guide (1), the ball head shaft (2) and the central through hole of the reamer bit (3) are in communication.
3. The guide head deflectable drill bit for directional drilling and reaming of the large curvature segment as claimed in claim 1, characterized in that the ball head (102) of the helical ball head guide (1) is provided with weak cutting teeth (105); the spiral bulge (104) is welded with a wear-resistant layer, and the outer diameter of the spiral bulge (104) after the wear-resistant layer is welded is slightly smaller than the diameter of the pilot hole.
4. The guide head deflectable drill bit for directional drilling and reaming of the large-curvature section is characterized in that a first conical surface (204) close to the end surface of the ball head end (202) and a second conical surface (205) close to the shaft end (201) are arranged on the ball head end (202) of the ball head shaft (2), the intersection of the first conical surface (204) and the second conical surface (205) is a circular rib, the grooves are hemispherical grooves, and the grooves are uniformly distributed along the circular rib for one circle.
5. A guide head deflectable drill bit for directional drilling and reaming of large curvature segments according to claim 4, characterized in that the angle between the first tapered surface (204) and the second tapered surface (205) is obtuse, and the second tapered surface (205) has the same taper as the tapered through hole in the upper joint (4).
6. A guide head deflectable drill bit for directional drilling and reaming of large curvature segment as claimed in claim 1, characterized in that the blades (302) are provided with cutting teeth (306) and reverse cutting teeth (307), and the water holes on the blades (302) are communicated with the central through hole of the reaming bit (3).
7. The guide head deflectable drill bit for directional drilling and large-curvature section reaming according to claim 1, characterized in that the inner wall of the drill bit body (301) is sequentially a connecting section, a first inner wall, a second inner wall, an annular step (304), a third inner wall, a first conical section, a fourth inner wall and a second conical section; the connecting section is connected with a small inner diameter end (402) of the joint body, and the sliding groove (303) is formed in the second inner wall.
8. The pilot bit deflectable drill bit for reaming large curvature segments of directional drilling according to claim 1, characterized in that the screw ball head pilot (1) is in threaded connection with the shaft end (201) of the ball head shaft (2), and the upper joint (4) is in threaded connection with the reamer bit (3).
9. A method for reaming a large curvature section of directional drilling, which is realized by the bit-guide deflectable drill bit of any one of claims 1 to 8, and comprises the following steps: the spiral ball head guider enters the pilot hole and guides the reaming bit to perform reaming construction along the existing track of the pilot hole; the ball head shaft and the steel balls arranged on the ball head shaft can ensure that the ball head shaft and the spiral ball head guider deflect, the upper joint limits the axial displacement and the deflection angle of the ball head shaft, and the steel balls matched with the grooves can transmit torque; the spiral ball head guider has weak cutting capability, on one hand, the spiral ball head guider can cut residues in a pilot hole, and simultaneously, a new branch drill hole is prevented from being drilled due to the fact that the cutting capability is too strong; the wear-resistant layer improves the wear-resistant strength of the spiral ball head guider, and simultaneously strengthens the support with the hole wall while ensuring the powder discharge space, so that the reaming bit drills in reaming along the existing track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110601191.7A CN113187397B (en) | 2021-05-31 | 2021-05-31 | Guide head deflectable type drill bit for reaming large curvature section of directional drilling and reaming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110601191.7A CN113187397B (en) | 2021-05-31 | 2021-05-31 | Guide head deflectable type drill bit for reaming large curvature section of directional drilling and reaming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113187397A CN113187397A (en) | 2021-07-30 |
| CN113187397B true CN113187397B (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110601191.7A Active CN113187397B (en) | 2021-05-31 | 2021-05-31 | Guide head deflectable type drill bit for reaming large curvature section of directional drilling and reaming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113187397B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO115746B1 (en) * | 1994-03-25 | 2000-05-30 | Amoco Corp | Curved drilling assembly |
| DE102005054311A1 (en) * | 2005-11-11 | 2007-05-16 | Tracto Technik | Drill for trenchless pipe-laying has threaded ring which fits into drill casing and acts as mounting for drill hammer, ring having axial bore, into which locking bolt screws |
| CN101946059A (en) * | 2007-12-19 | 2011-01-12 | 普拉德研究及开发股份有限公司 | Directional drilling system |
| CN207160977U (en) * | 2017-07-17 | 2018-03-30 | 河北中荣石油机械有限责任公司 | A kind of ultra-short radius well deflecting drilling tool |
| CN111520075A (en) * | 2020-06-15 | 2020-08-11 | 河北立森石油机械股份有限公司 | Articulated head screw drill and using method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2898935B1 (en) * | 2006-03-27 | 2008-07-04 | Francois Guy Jacques Re Millet | DEVICE FOR ORIENTING DRILLING TOOLS |
-
2021
- 2021-05-31 CN CN202110601191.7A patent/CN113187397B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO115746B1 (en) * | 1994-03-25 | 2000-05-30 | Amoco Corp | Curved drilling assembly |
| DE102005054311A1 (en) * | 2005-11-11 | 2007-05-16 | Tracto Technik | Drill for trenchless pipe-laying has threaded ring which fits into drill casing and acts as mounting for drill hammer, ring having axial bore, into which locking bolt screws |
| CN101946059A (en) * | 2007-12-19 | 2011-01-12 | 普拉德研究及开发股份有限公司 | Directional drilling system |
| CN207160977U (en) * | 2017-07-17 | 2018-03-30 | 河北中荣石油机械有限责任公司 | A kind of ultra-short radius well deflecting drilling tool |
| CN111520075A (en) * | 2020-06-15 | 2020-08-11 | 河北立森石油机械股份有限公司 | Articulated head screw drill and using method |
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| Publication number | Publication date |
|---|---|
| CN113187397A (en) | 2021-07-30 |
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