CN114704205B - Static directional type build-up rate controllable guiding drilling tool - Google Patents
Static directional type build-up rate controllable guiding drilling tool Download PDFInfo
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- CN114704205B CN114704205B CN202210377726.1A CN202210377726A CN114704205B CN 114704205 B CN114704205 B CN 114704205B CN 202210377726 A CN202210377726 A CN 202210377726A CN 114704205 B CN114704205 B CN 114704205B
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- guide pipe
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- bearing
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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
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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
- E21B17/042—Threaded
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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
Abstract
The application relates to the technical field of high-end underground equipment, in particular to a static directional build-up rate controllable guide drilling tool which comprises a torque transmission positioning device and a flexible controllable guide device, wherein the torque transmission positioning device is connected with the flexible controllable guide device through threads; the torque transmission positioning device consists of an upper joint, a telescopic spline shaft, a semicircular joint, an outer pipe, a spline shaft sleeve, a main transmission shaft, a bearing string, a spring, a probe and a positioning guide pipe joint; the flexible controllable guiding device consists of a spline flexible short section, a guiding pipe lower joint and a drill bit joint; the drilling tool realizes the integral positioning of the drilling tool through the probe in the positioning guide pipe joint, the guiding direction of the drilling tool is finally determined through the phase difference between the probe and the tile-shaped curved surface slot on the guide pipe, and the guide pipe and a plurality of spline flexible short sections inside the guide pipe can bend and incline towards one side with the tile-shaped curved surface slot, so that the controllable guiding drilling is realized. The method has the advantages of adjustable build-up rate, static pointing, simple structure and easiness in operation.
Description
Technical Field
The invention relates to the technical field of high-end underground equipment, in particular to a static directional build-up rate controllable guide drilling tool.
Background
At present, the phenomenon of soil and underground water pollution in China is prominent, and the situation of point pollution to zonal and surface pollution is developed. The in-situ repairing method for the large-area polluted site needs to drill a large number of vertical repairing drill holes in the polluted site, so that the drilling workload is large, the diffusion radius of a repairing medicament is small, the construction period is long, and the cost is high. The key to the multi-branch horizontal well technology is the deflection of the wellbore such that the angle of inclination reaches or approaches 90 ° and the wellbore has a length along the horizontal.
Various well deflection drilling tools can be classified into static and dynamic steering tools according to the operating state; the method can be divided into a pushing type and a directional type according to a guiding deflecting mechanism, wherein the static pushing type and the dynamic directional type guiding drilling tools are mature, but the deflecting effect of the deflecting tool in a hard stratum is obvious, and the problems that the deflecting is difficult to be carried out on soil layers for soil remediation and broken and loosened strata, the guiding drilling direction and the well inclination angle are not easy to control and the like exist.
Disclosure of Invention
In order to overcome the defects that the horizontal deflection is difficult, the deflection rate is large and the guide drilling direction and the well deflection angle are difficult to control in the soil layer and the broken loose stratum of the existing guide deflection tool, the invention provides the static directional type deflection rate controllable guide drilling tool which has the advantages of small deflection radius, stable deflection, easy control of the guide drilling direction and the well deflection angle and simple and convenient operation.
The application provides a controllable direction drilling tool of static directional formula build slope adopts following technical scheme:
a static directional type slope making rate controllable guiding drilling tool comprises a torque transmission positioning device and a flexible controllable guiding device, wherein the torque transmission positioning device and the flexible controllable guiding device are in threaded connection, and the torque transmission positioning device is positioned at the upper part of the flexible controllable guiding device; a spring is sleeved under a step in the middle of the telescopic spline shaft, the lower part of the spring is a spline shaft sleeve and is in contact with the spline shaft sleeve, the spline shaft sleeve is sleeved on a bottom optical axis of the telescopic spline shaft, an inner hole of the spline shaft sleeve is provided with a sealing groove, a sealing ring A is arranged in the sealing groove, the lower part of the spline shaft sleeve is in threaded connection with a main transmission shaft, and a bearing string is sleeved on the main transmission shaft; the lower part of the outer pipe is in threaded connection with a positioning guide pipe joint, the positioning guide pipe joint is sleeved on the thin optical axis of the main transmission shaft and is in serial contact with the bearing, two sealing grooves are formed in inner holes of the positioning guide pipe joint, and two sealing rings A are arranged in the sealing grooves.
A semicircular clutch B is arranged on a threaded shaft at the lower part of a semicircular joint in the torque transmission positioning device, a semicircular clutch A is arranged on a step in the middle of the telescopic spline shaft, the semicircular clutch A and the semicircular clutch B can be meshed and separated, and the separation distance is c; a TC bearing A is fixedly connected to the inner hole step of the semicircular joint, a TC bearing B is sleeved on the upper step of the telescopic spline shaft, and the TC bearing A is in contact with the TC bearing B and can slide; the semicircular joint is characterized in that two sealing grooves are formed in inner holes of the semicircular joints, and sealing rings are installed in the sealing grooves.
The lower end face of a step in the middle of a telescopic spline shaft in the torque transmission positioning device is connected with the upper end of a spring, the lower end of the spring is connected with a spline shaft sleeve, the spline shaft sleeve is provided with a sealing groove, and a sealing ring A is arranged in the sealing groove; the lower part is the external splines in the flexible integral key shaft, the inside of spline housing is internal splines, both can realize sliding engagement, the lower part of flexible integral key shaft is the optical axis, can slide in spline housing unthreaded hole.
The main transmission shaft and the spline shaft sleeve are in threaded connection, a bearing string is installed below a step of the main transmission shaft, the lower portion of the bearing string is a positioning guide pipe joint, the positioning guide pipe joint is also sleeved on the main transmission shaft and is provided with two sealing grooves, and two sealing rings A are installed in the sealing grooves.
The telescopic spline shaft, the spring, the spline shaft sleeve and the main transmission shaft are all positioned in the outer pipe and are fixed up and down through the semicircular joint and the positioning guide pipe joint, and the semicircular joint, the positioning guide pipe joint and the outer pipe are in threaded connection.
The positioning guide pipe joint comprises a cover plate, a spring A, a probe, a rectangular sealing piece and an inner hexagon screw, wherein the spring A is fixed in a deep hole of a circular ring on the left side of the cover plate, one end of the probe provided with a step is inserted into the spring A to be fixed, the other end of the probe is inserted into a cylindrical hole on the inner right side of the cover plate to be fixed, the cover plate and the positioning guide pipe joint are fixed through four inner hexagon screws, a rectangular sealing groove is arranged in an outer hole of the positioning guide pipe joint, and the rectangular sealing piece is installed in the sealing groove.
The flexible controllable guiding device consists of a spline flexible short section, a guiding pipe lower joint, a drill bit, a TC bearing C and a TC bearing D, wherein the spline flexible short section is in threaded connection with the lower part of the main transmission shaft, and a plurality of spline flexible short sections are in threaded connection; the upper part and the lower part of the guide pipe are respectively in threaded connection with a positioning guide pipe joint and a guide pipe lower joint, the last spline flexible short section in the guide pipe is in threaded connection with a drill bit joint, and the drill bit joint is in threaded connection with a bottom drill bit; the TC bearing D is fixedly connected with the outer surface of the drill bit joint, the TC bearing C is fixedly connected with the inner hole surface of the lower joint of the guide pipe, and the TC bearing C and the TC bearing D are in rotatable contact relation.
The flexible short section of spline be located the stand pipe, be threaded connection between flexible short section of spline and the final drive shaft, be threaded connection between stand pipe and the location stand pipe joint, be threaded connection between a plurality of flexible short sections of spline.
The spline flexible short section comprises a female joint, an O-shaped sealing ring A, a male joint, an O-shaped sealing ring B, an O-shaped sealing ring C, a ball seat and a spline housing, wherein the male joint is positioned in the female joint, the spherical outer surface on the upper part of the male joint is in contact with the spherical inner surface of the female joint, the spherical surface of the male joint is provided with an upper sealing groove and a lower sealing groove, the O-shaped sealing ring A and the O-shaped sealing ring B are sequentially arranged in the sealing grooves, the spherical lower surface of the male joint is in contact with the curved surface of the ball seat, the outer cylindrical surface of the ball seat is provided with the sealing groove, the O-shaped sealing ring C is arranged in the sealing groove, the ball seat is in contact with the inner hole surface of the female joint, and the lower surface of the ball seat is in contact with the spline housing.
The spline sleeve is in threaded connection with the female joint, and the external thread of the male joint can be connected with the internal thread hole in the upper part of the female joint of the next spline flexible short section; the upper part of the male joint is spherical, and the inner surface of the female joint contacted with the male joint is also spherical.
The inner surface of the spline sleeve is provided with an internal spline, the shaft below the spherical surface of the male joint is provided with an external spline, the internal spline is meshed with the external spline, the external spline and the internal spline have a height difference, and the heights of the two spline teeth are gradually reduced from top to bottom; the central axis of the male joint and the central axis of the female joint can be inclined at the maximum angle of inclination theta =3 degrees along the axial direction.
The external spline teeth of the male joint and the internal spline teeth of the spline sleeve can be symmetrically meshed along the central axis of the female joint, and can also be meshed along the central axis of the female joint by deflecting theta = 0-3 degrees.
The male joint in the last section of spline flexible short section in the guide pipe is in threaded connection with the drill bit joint, and the drill bit joint is in threaded connection with the drill bit; the outer cylindrical surface of the drill bit joint is fixedly provided with a TC bearing D, the lower joint of the guide pipe is in threaded connection with the guide pipe, an inner hole of the lower joint of the guide pipe is fixedly provided with a TC bearing C, and the TC bearing D is in contact with the TC bearing C and can rotate.
The guide pipe is characterized in that a plurality of tile-shaped curved surface slots are formed in the pipe body of the guide pipe, the tile-shaped curved surface slots are distributed at equal intervals along the central axis of the guide pipe, and curved surface welding plates are welded on a plurality of tile-shaped slots in the middle lower portion of the guide pipe.
The invention comprises at least one of the following beneficial effects:
1. the controllable direction drilling tool of static directional formula build slope in this application simple structure, the build slope radius is little, static directional direction is controllable, build slope is controllable, reasonable in design has high spreading value.
2. The static directional build-up rate controllable guiding drilling tool is positioned through the angle difference of tile-shaped curved surface welding seams which are equidistantly distributed between the probe rod arranged in the positioning guiding pipe joint and the guiding pipe body, and then the azimuth coordinate is sent to ground control equipment through the probe rod, so that the integral accurate azimuth positioning of the drilling tool can be realized.
3. Spline flexible short sections connected through threads are distributed in a guide pipe of the static directional build-up rate controllable guide drilling tool, each spline flexible short section can realize 3-degree angle deflection along a central axis, and torque transmission can also be realized through threaded connection between a male joint and a female joint in each spline flexible short section; the guide pipe is matched with a plurality of spline flexible short sections distributed in the guide pipe, so that the drilling tool can accurately control the well inclination angle of the well according to the drilling pressure, and the controllable drilling of the build-up rate is realized.
4. The engagement and separation action of the telescopic spline shaft in the static directional build-rate controllable guiding drilling tool and the semicircular clutch A and the semicircular clutch B on the semicircular joint can realize the integral rotation of the drilling tool, and also can realize the non-rotation of the outer pipe, the guide pipe and the positioning guide pipe joint and the rotation of other drilling tool parts such as a drill bit. When the drill bit does not reach the well bottom, the semicircular clutch A on the telescopic spline shaft is meshed with the semicircular clutch B on the semicircular joint under the action of the spring, and the external spline on the telescopic spline shaft is disengaged from the internal spline on the spline shaft sleeve, so that the integral rotation of the drilling tool is realized; when the drill bit reachs the shaft bottom, because the effect of drilling tool self gravity and weight on bit, the spring is compressed, the epaxial semicircle clutch A of flexible integral key with semicircle clutch B separation and meshing on the adapter, the epaxial external splines of flexible integral key and the internal spline sliding engagement on the spline housing, realize the outer tube, stand pipe and location stand pipe coupling irrotational, other internals such as drill bit are rotatory to be bored into, the stand pipe irrotational only is followed up along with the drill bit drilling is crooked gradually, thereby realize that the drilling tool is steady reliable accomplishes static directional formula direction and creeps into.
5. The guide pipe is provided with a plurality of tile-shaped curved surface slots which are distributed at equal intervals along the central axis of the guide pipe, so that the flexible short section of the guide pipe control spline is ensured to be bent towards the direction with the slots; the curved surface welding plates are welded on the plurality of tile-shaped curved surface slots at the middle lower part of the guide pipe, so that the guide pipe can be effectively prevented from being broken, and stable and efficient deflecting guide drilling is realized.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a static directional build rate controllable pilot drilling tool in the embodiment of the present application;
FIGS. 2A and 2B are respectively a schematic structural diagram of a spline flexible short section of the invention;
FIGS. 3A and 3B are schematic views respectively illustrating the engagement and disengagement of the semi-circular clutch A and the semi-circular clutch B on the telescopic spline shaft and the semi-circular joint of the invention;
FIG. 4 isbase:Sub>A sectional view A-A showing the internal structure of the present invention;
FIG. 5 is a schematic diagram showing the detailed structure of the semicircular joint;
FIG. 6 is a schematic view showing the detailed structure of the telescopic spline shaft;
FIG. 7 is an enlarged partial view of portion D of FIG. 1;
FIG. 8 is a sectional view B-B showing an internal structure of the present invention;
FIG. 9 is a C-C sectional view showing the internal structure of the present invention;
FIG. 10 is a schematic view showing the detailed structure of the guide tube;
description of reference numerals:
1. an upper joint; 2. a telescopic spline shaft; 21. the external spline teeth of the telescopic spline shaft; 22. a semicircular clutch A; 23. the middle step of the telescopic spline shaft; 3. a semicircular joint; 31. a semicircular clutch B; 4. an outer tube; 5. a spline shaft sleeve; 51. spline shaft sleeve internal spline teeth; 6. a main drive shaft; 7. positioning a guide pipe joint; 71. a cover plate; 72. a spring A; 73. a probe rod; 74. a rectangular seal; 75. a socket head cap screw; 8. a spline flexible short section; 81. a female joint; 82. an O-shaped sealing ring A; 83. a male connector; 831. a male connector external spline; 84. an O-shaped sealing ring B; 85. an O-shaped seal ring C; 86. a ball seat; 87. a spline housing; 871. the spline sleeve is internally provided with a spline; 9. a guide tube; 91. welding a plate on a curved surface; 92. cutting a tile-shaped curved surface; 10. a guide pipe lower joint; 11. a bit sub; 12. a drill bit; 13. TC bearing C; 14. TC bearing D; 15. a sealing ring A; 16. bearing strings; 17. a spring; 18. a seal ring; 19. TC bearing A; 20. TC bearing B.
Detailed Description
The present application is described in further detail below with reference to figures 1-10.
The embodiment of the application discloses a static directional build-up rate controllable steering drilling tool. Referring to fig. 1, 4 and 6, the static directional build-up rate controllable guiding drilling tool comprises a torque transmission positioning device and a flexible controllable guiding device, wherein the torque transmission positioning device and the flexible controllable guiding device are in threaded connection, the torque transmission positioning device is positioned at the upper part of the flexible controllable guiding device, and the torque transmission positioning device comprises an upper connector 1, a telescopic spline shaft 2, a semicircular connector 3, an outer pipe 4, a spline shaft sleeve 5, a main transmission shaft 6, a positioning guiding pipe connector 7, a bearing string 16, a spring 17, a TC bearing A19 and a TC bearing B20. In the present embodiment, the end having the upper joint 1 is defined as the upper end of the drilling tool, and the end having the drill bit 12 is defined as the lower end of the drilling tool. The upper connector 1 is in threaded connection with the upper part of the telescopic spline shaft 2, a TC bearing B20 is sleeved at the step 23 of the upper part of the telescopic spline shaft 2 and is fixed through the upper connector 1, a semicircular connector 3 is sleeved on the step in the middle of the telescopic spline shaft 2, a TC bearing A19 is fixedly connected on the step of an inner hole of the semicircular connector 3, the TC bearing A19 is in rotatable contact with the TC bearing B20, two sealing grooves are arranged in the inner hole of the semicircular connector 3, two sealing rings 18 are arranged in the sealing grooves, and the lower part of the semicircular connector 3 is in threaded connection with the outer pipe 4; a spring 17 is sleeved below a step in the middle of the telescopic spline shaft 2, the lower part of the spring 17 is a spline shaft sleeve 5 and is in contact with the spline shaft sleeve, the spline shaft sleeve 5 is sleeved on a bottom optical axis of the telescopic spline shaft 2, an inner hole of the spline shaft sleeve 5 is provided with a sealing groove, a sealing ring A15 is arranged in the sealing groove, the lower part of the spline shaft sleeve 5 is in threaded connection with the main transmission shaft 6, and a bearing string 16 is sleeved on the main transmission shaft 6; the lower part of the outer pipe 4 is in threaded connection with a positioning guide pipe joint 7, the positioning guide pipe joint 7 is sleeved on the fine optical axis of the main transmission shaft 6 and is in contact with a bearing string 16, two sealing grooves are arranged in the inner hole of the positioning guide pipe joint 7, and two sealing rings A15 are arranged in the sealing grooves.
The flexible controllable guiding device consists of a spline flexible short section 8, a guiding pipe 9, a guiding pipe lower joint 10, a drill bit joint 11, a drill bit 12, a TC bearing C13 and a TC bearing D14, wherein the spline flexible short section 8 is in threaded connection with the lower part of the main transmission shaft 6, and a plurality of spline flexible short sections 8 are in threaded connection; the upper part and the lower part of the guide pipe 9 are respectively in threaded connection with a positioning guide pipe joint 7 and a guide pipe lower joint 10, the last spline flexible short joint 8 in the guide pipe 9 is in threaded connection with a drill bit joint 11, and the drill bit joint 11 is in threaded connection with a bottom drill bit 12; the TC bearing D14 is fixedly connected with the outer surface of the drill bit joint 11, the TC bearing C13 is fixedly connected with the inner hole surface of the guide pipe lower joint 10, and the TC bearing C13 and the TC bearing D14 are in rotatable contact relation.
Referring to fig. 2A, 2B and 9, a spline flexible short section 8 in the flexible controllable guiding device is composed of a female joint 81, an O-shaped sealing ring a82, a male joint 83, an O-shaped sealing ring B84, an O-shaped sealing ring C85, a ball seat 86 and a spline housing 87, the male joint 83 is located in the female joint 81, a spherical outer surface of the upper portion of the male joint 83 is in contact with a spherical inner surface of the female joint 81, an upper sealing groove and a lower sealing groove are formed in the spherical surface of the male joint 83, the O-shaped sealing ring a82 and the O-shaped sealing ring B84 are sequentially installed in the sealing grooves, a spherical lower surface of the male joint 83 is in contact with a curved surface of the ball seat 86, a sealing groove is formed in an outer cylindrical surface of the ball seat 86, the O-shaped sealing ring C85 is installed in the sealing groove, the ball seat 86 is in contact with an inner hole surface of the female joint 81, the spline housing 87 is arranged below the ball seat 86, the spline housing 87 is in threaded connection with the female joint 81, and an external thread of the male joint 83 can be connected with an upper internal thread hole of the female joint 81 of the next spline flexible guiding device 8.
The upper part of the male connector 83 is spherical, and the inner surface of the female connector 81 in contact with the upper part is also spherical; the inner surface of the spline housing 87 is provided with an internal spline 871, the spherical surface of the male joint 83 is provided with an external spline 831, the internal spline 871 and the external spline 831 can be obliquely meshed, the spline teeth of the external spline 831 and the internal spline 871 have a height difference, the heights of the spline teeth of the two splines are gradually reduced from top to bottom, and the central axis of the male joint 83 and the central axis of the female joint 81 can be inclined by an angle theta = 0-3 degrees along the axial direction.
Referring to fig. 1, 3A, 3B, 5 and 6, a semicircular clutch a22 is arranged on a step in the middle of the telescopic spline shaft 2 in the torque transmission positioning device, a semicircular clutch B31 is arranged on a threaded shaft at the lower part of the semicircular joint 3, and the semicircular clutch a22 and the semicircular clutch B31 can be in contact engagement.
The lower end face of the middle step of the telescopic spline shaft 2 in the torque transmission positioning device is connected with the upper part of the spring 17, the lower part of the spring 17 is connected with the spline shaft sleeve 5, and the external spline shaft key teeth 21 at the bottom of the telescopic spline shaft 2 are in slidable engagement with the spline key teeth 51 in the spline shaft sleeve 5, so that torque transmission is realized.
Referring to fig. 1, 7 and 8, the positioning guide pipe joint 7 in the torque transmission positioning device is composed of a cover plate 71, a spring a72, a probe 73, a rectangular sealing piece 74 and hexagon socket screws 75, wherein the left side inside the cover plate 71 is provided with an annular groove, the right side is provided with a cylindrical groove, the spring a72 is fixedly connected in the annular groove on the left side, one end, with a step, of the probe 73 extends into the spring a72, the other end of the probe 73 is inserted into the cylindrical groove on the right side of the cover plate 71, the cover plate 71 is fixed with the positioning guide pipe joint 7 through the four hexagon socket screws 75, and the rectangular sealing piece 74 is located in the rectangular groove of the positioning guide pipe joint 7.
Referring to fig. 1 and 10, the body of the guide tube 9 in the flexible controllable guide device is provided with a plurality of tile-shaped curved surface slots 92, the tile-shaped curved surface slots 92 are distributed at equal intervals along the central axis of the guide tube 9, and curved surface welding plates 91 are welded on a plurality of tile-shaped curved surface slots 92 at the middle lower part of the guide tube.
When the static directional build-up rate controllable guide drilling tool works, firstly, the drilling tool is integrally assembled on the ground; the method specifically comprises the following steps: determining that the semicircular clutch A22 on the middle step of the telescopic spline shaft 2 is in a complete meshing state with the semicircular clutch B31 at the lower part of the semicircular joint 3 under the action of the elastic force of the spring 17; the external spline teeth 21 at the lower part of the telescopic spline shaft 2 and the internal spline teeth 51 of the spline shaft sleeve 3 are in a non-meshed state, and the telescopic spline shaft 2 is compressed to extrude the spring 17 to realize downward sliding; the spline flexible short sections 8 are in threaded connection and are arranged in the guide pipe 9; the phase difference between the probe 73 in the well-positioned guide pipe joint 7 and the tile-shaped curved surface slot 92 on the guide pipe 9 is determined.
After the work is finished, the upper connector 1 is in threaded connection with other underground drilling tools, the whole well can be drilled, when a drill bit 12 of the static directional build rate controllable guiding drilling tool does not contact with the bottom of the well, the other underground drilling tools transmit rotating torque to the upper connector 1, the upper connector 1 drives the telescopic spline shaft 2 to rotate, due to the fact that a semicircular clutch A22 on a middle step of the telescopic spline shaft 2 is in a complete meshing state with a semicircular clutch B31 on the lower portion of a semicircular connector 3 under the effect of elastic force of a spring 17, an external spline key tooth 21 on the lower portion of the telescopic spline shaft 2 and an internal spline key tooth 51 of the spline shaft sleeve 3 are in a non-meshing state, the whole static directional build rate controllable guiding drilling tool rotates along with the other underground drilling tools, the phase of a probe 73 is determined through equipment on the ground, the phase of a tile-shaped curved surface cutting seam 92 on the guide pipe 9 is determined through the whole rotation of the drilling tool, and the direction controllability is realized.
When the drill bit 12 of the static directional build-up rate controllable guide drilling tool contacts the bottom of the well, the spring 17 is compressed under the action of the gravity and the bit pressure of other downhole drilling tools, so that the external spline teeth 21 at the lower part of the telescopic spline shaft 2 and the internal spline teeth 51 of the spline shaft sleeve 3 are in a meshed state, the other downhole drilling tools transmit the rotating torque to the upper joint 1, the upper joint 1 drives the telescopic spline shaft 2 to rotate, and the telescopic spline shaft 2 drives the main transmission shaft 6, the spline flexible short section 8, the drill bit joint 11 and the drill bit to rotate to break rock; at the moment, the semicircular clutch A22 on the step in the middle of the telescopic spline shaft 2 and the semicircular clutch B31 at the lower part of the semicircular joint 3 are in a disengaged state, the semicircular joint 3, the outer pipe 4, the positioning guide pipe joint 7, the guide pipe 9 and the guide pipe lower joint 10 do not rotate along with the telescopic spline shaft 2, and static directional drilling is realized by the flexible controllable guide device at the lower part of the drilling tool.
When the pump pressure is increased continuously, and all spline flexible short sections 8 in the guide pipe 9 are subjected to larger pressure, because the upper part of a male joint 83 in the spline flexible short section 8 is spherical, the inner surface of a female joint 81 in contact with the male joint is also spherical, the inner surface of a spline sleeve 87 is an inner spline 871, an outer spline 831 is arranged below the spherical surface of the male joint 83, the inner spline 871 is obliquely meshed with the outer spline 831, the height difference exists between the outer spline 831 and the inner spline 871, and the heights of the spline splines are gradually reduced from top to bottom, the central axis of the male joint 83 and the central axis of the female joint 81 in each spline flexible short section 8 can be axially inclined by 0-3 degrees, the guide pipe 9 and a plurality of connected spline flexible short sections 8 in the guide pipe can realize horizontal well drilling with adjustable build-up rate according to the magnitude of the drill pressure applied on the upper joint 1, the applied drill pressure is large, the build-up rate is large, the applied drill pressure is small, and the build-up rate is small; a plurality of tile-shaped curved surface slots 92 are formed in the guide pipe 9, so that the guide pipe can be bent towards one side with the tile-shaped curved surface slots 92, and the inclined directions of a plurality of spline flexible short sections 8 in the guide pipe 9 are fixed; drilling fluid enters from the upper connector 1, flows into the drill bit 12 along the telescopic spline shaft 2, the spline shaft sleeve 5, the main transmission shaft, the spline flexible short section 8 and the center hole of the drill bit connector 11, then flows out from the hole of the drill bit 12 and carries with crushed rocks to return to the ground surface; in the process of the drilling tool guiding drilling, the guide pipe 9, the semicircular joint 3, the outer pipe 4, the positioning guide pipe joint 7 and the lower joint 10 of the guide pipe only bend and do not rotate along with the drilling of the drill bit, and the static directional type guiding drilling is realized.
The direction and the inclination angle of the horizontal well hole can be accurately controlled by the static directional type slope making controllable guiding drilling tool through the torque transmission positioning device and the flexible controllable guiding device, the problems that the existing guiding drilling tool is difficult to make a slope in a soil layer or a broken and loose stratum due to soft soil body, the slope making rate is large, and the positioning and guiding are not accurate are solved, the static directional type slope making controllable guiding drilling tool has the characteristics of accuracy and reliability in static directional type guiding, small curvature radius, adjustable slope making rate, simplicity and convenience in operation, and positive popularization significance is achieved.
The above is the preferred embodiment of the present application, and the protection scope of the present application is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. A static directional type slope making rate controllable guiding drilling tool is composed of a torque transmission positioning device and a flexible controllable guiding device, wherein the torque transmission positioning device is in threaded connection with the flexible controllable guiding device, and the torque transmission positioning device is positioned on the upper portion of the flexible controllable guiding device, and is characterized in that the torque transmission positioning device is composed of an upper connector (1), a telescopic spline shaft (2), a semicircular connector (3), an outer pipe (4), a spline shaft sleeve (5), a main transmission shaft (6), a positioning guide pipe connector (7), a bearing string (16), a spring (17), a TC bearing A (19) and a TC bearing B (20), the upper connector (1) is in threaded connection with the upper portion of the telescopic spline shaft (2), the TC bearing B (20) is sleeved at the upper step (23) of the telescopic spline shaft (2) and fixed through the upper connector (1), the semicircular connector (3) is sleeved on the middle step of the telescopic spline shaft (2), the TC bearing A (19) is fixedly connected with the TC bearing B (20), the inner hole of the semicircular connector (3) is provided with two semicircular connectors (18), and two semicircular connectors are connected with sealing grooves (18); a spring (17) is sleeved below a step in the middle of the telescopic spline shaft (2), the lower part of the spring (17) is a spline shaft sleeve (5) and is in contact with the spline shaft sleeve, the spline shaft sleeve (5) is sleeved on a bottom optical axis of the telescopic spline shaft (2), a sealing groove is formed in an inner hole of the spline shaft sleeve (5), a sealing ring A (15) is installed in the sealing groove, the lower part of the spline shaft sleeve (5) is in threaded connection with a main transmission shaft (6), and a bearing string (16) is sleeved on the main transmission shaft (6); the lower part of the outer pipe (4) is in threaded connection with a positioning guide pipe joint (7), the positioning guide pipe joint (7) is sleeved on the thin optical axis of the main transmission shaft (6) and is in contact with a bearing string (16), two sealing grooves are arranged in the inner hole of the positioning guide pipe joint (7), and two sealing rings A (15) are arranged in the sealing grooves; the flexible controllable guiding device is composed of spline flexible short sections (8), a guiding pipe (9), a guiding pipe lower joint (10), a drill bit joint (11), a drill bit (12), a TC bearing C (13) and a TC bearing D (14), wherein the spline flexible short sections (8) are in threaded connection with the lower part of the main transmission shaft (6), and a plurality of spline flexible short sections (8) are in threaded connection; the upper part and the lower part of the guide pipe (9) are respectively in threaded connection with a positioning guide pipe joint (7) and a guide pipe lower joint (10), the last spline flexible short section (8) in the guide pipe (9) is in threaded connection with a drill bit joint (11), and the drill bit joint (11) is in threaded connection with a bottom drill bit (12); the TC bearing D (14) is fixedly connected with the outer surface of the drill bit joint (11), the TC bearing C (13) is fixedly connected with the inner hole surface of the guide pipe lower joint (10), and the TC bearing C (13) and the TC bearing D (14) are in rotatable contact relation.
2. The static directional build rate controllable pilot drilling tool of claim 1, wherein: the flexible controllable guiding device is characterized in that a spline flexible short section (8) in the flexible controllable guiding device is composed of a female joint (81), an O-shaped sealing ring A (82), a male joint (83), an O-shaped sealing ring B (84), an O-shaped sealing ring C (85), a ball seat (86) and a spline housing (87), the male joint (83) is located in the female joint (81), the spherical outer surface of the upper portion of the male joint (83) is in contact with the spherical inner surface of the female joint (81), the spherical surface of the male joint (83) is provided with an upper sealing groove and a lower sealing groove, the O-shaped sealing ring A (82) and the O-shaped sealing ring B (84) are sequentially installed in the sealing grooves, the spherical lower surface of the male joint (83) is in contact with the curved surface of the ball seat (86), the outer cylindrical surface of the ball seat (86) is provided with a sealing groove, the O-shaped sealing ring C (85) is installed in the sealing groove, the ball seat (86) is in contact with the inner hole of the female joint (81), the spline housing (87) is arranged below the spline housing (87), and the spline housing (87) is in threaded connection with the female joint (81).
3. The static directional build rate controllable pilot drilling tool of claim 2, wherein: the upper part of the male joint (83) is spherical, and the inner surface of the female joint (81) which is contacted with the male joint is also spherical; the inner surface of the spline housing (87) is provided with an internal spline (871), the spherical surface of the male joint (83) is provided with an external spline (831), the internal spline (871) and the external spline (831) are in inclined meshing, the spline teeth of the external spline (831) and the internal spline (871) have height difference, and the heights of the spline teeth of the two splines are gradually reduced from top to bottom.
4. The static directional build rate controllable pilot drilling tool of claim 1, wherein: the middle step of the telescopic spline shaft (2) is provided with a semicircular clutch A (22), the lower threaded shaft of the semicircular joint (3) is provided with a semicircular clutch B (31), and the semicircular clutch A (22) is engaged with the semicircular clutch B (31).
5. The static directional build rate controllable pilot drilling tool of claim 1, wherein: the lower end face of the middle step of the telescopic spline shaft (2) is connected with the upper end of a spring (17), and the lower end of the spring (17) is connected with the spline shaft sleeve (5); the external spline shaft key teeth (21) at the bottom of the telescopic spline shaft (2) are in slidable engagement with the internal spline shaft teeth (51) of the spline shaft sleeve (5).
6. The static directional build rate controllable pilot drilling tool of claim 1, wherein: the positioning guide pipe joint (7) is composed of a cover plate (71), a spring A (72), a probe (73), a rectangular sealing piece (74) and inner hexagon screws (75), wherein the left side inside the cover plate (71) is provided with an annular groove, the right side is provided with a cylindrical groove, the spring A (72) is fixedly connected in the annular groove on the left side, one end, with a step, of the probe (73) extends into the spring A (72), the other end of the probe (73) is inserted into the cylindrical groove on the right side of the cover plate (71), the cover plate (71) is fixed with the positioning guide pipe joint (7) through the four inner hexagon screws (75), and the rectangular sealing piece (74) is located in the rectangular groove of the positioning guide pipe joint (7).
7. The static directional build rate controllable pilot drilling tool of claim 1, wherein: the guide pipe is characterized in that a plurality of tile-shaped curved surface slots (92) are formed in the pipe body of the guide pipe (9), the tile-shaped curved surface slots (92) are distributed at equal intervals along the central axis of the guide pipe (9), and curved surface welding plates (91) are welded on a plurality of tile-shaped curved surface slots (92) in the middle lower portion of the guide pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210377726.1A CN114704205B (en) | 2022-04-12 | 2022-04-12 | Static directional type build-up rate controllable guiding drilling tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210377726.1A CN114704205B (en) | 2022-04-12 | 2022-04-12 | Static directional type build-up rate controllable guiding drilling tool |
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| CN114704205B true CN114704205B (en) | 2022-12-02 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2619041Y (en) * | 2003-01-27 | 2004-06-02 | 张书明 | Rotary disc rotation guide drilling tool |
| CN2658370Y (en) * | 2003-11-20 | 2004-11-24 | 中国地质调查局 | Whipstock driven by hole bottom motor |
| CN105569569A (en) * | 2015-11-19 | 2016-05-11 | 西南石油大学 | Novel inwards pushing and directional type rotation guiding tool |
| CN107165575A (en) * | 2017-07-17 | 2017-09-15 | 河北中荣石油机械有限责任公司 | A kind of ultra-short radius well deflecting drilling tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7243739B2 (en) * | 2004-03-11 | 2007-07-17 | Rankin Iii Robert E | Coiled tubing directional drilling apparatus |
-
2022
- 2022-04-12 CN CN202210377726.1A patent/CN114704205B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2619041Y (en) * | 2003-01-27 | 2004-06-02 | 张书明 | Rotary disc rotation guide drilling tool |
| CN2658370Y (en) * | 2003-11-20 | 2004-11-24 | 中国地质调查局 | Whipstock driven by hole bottom motor |
| CN105569569A (en) * | 2015-11-19 | 2016-05-11 | 西南石油大学 | Novel inwards pushing and directional type rotation guiding tool |
| CN107165575A (en) * | 2017-07-17 | 2017-09-15 | 河北中荣石油机械有限责任公司 | A kind of ultra-short radius well deflecting drilling tool |
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| CN114704205A (en) | 2022-07-05 |
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