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CN-122014100-A - Drilling machine for exploiting shale gas

CN122014100ACN 122014100 ACN122014100 ACN 122014100ACN-122014100-A

Abstract

The invention belongs to the technical field of drilling equipment and discloses a drilling machine for exploiting shale gas, which comprises an equipment frame, wherein a positioning plate is slidably arranged in the inner cavity of the equipment frame along the vertical direction, a drill rod is rotatably arranged on the bottom wall of the positioning plate, a drill bit is arranged at the bottom end of the drill rod, a plurality of groups of roller cones are arranged at the inner bottom of the drill bit, a main shaft is rotatably arranged in the inner cavity of the drill rod, a control mechanism is arranged in the inner cavity of the equipment frame and comprises a lifting assembly and a driving assembly, a impurity removing mechanism is arranged in the drill bit and comprises a cleaning brush and a positioning assembly, the cleaning brush can be controlled to continuously rotate above the roller cones through the positioning assembly, and the cleaning brush can automatically clean impurities attached to the surface of the roller cones, so that the continuous drilling effect of the roller cones is effectively improved.

Inventors

  • ZHANG MEIXIA
  • LIU XU

Assignees

  • 武汉文道工程机械有限公司

Dates

Publication Date
20260512
Application Date
20260311

Claims (7)

  1. 1. The utility model provides a rig for exploiting shale gas, includes equipment rack (1), equipment rack (1) is rectangle annular structure, through-hole (11) have been seted up to equipment rack (1) diapire, a serial communication port, equipment rack (1) inner chamber is along vertical direction slidable mounting locating plate (2), drilling rod (3) are installed in locating plate (2) diapire rotation, drilling rod (3) inside is provided with hollow structure, drilling rod (3) bottom is provided with drill bit (32), be provided with multiunit cone (33) in drill bit (32), drilling rod (3) inner chamber rotation is installed main shaft (31), the bottom of main shaft (31) is connected with drill bit (32); A control mechanism (4) is arranged in the inner cavity of the equipment rack (1), and the control mechanism (4) comprises a lifting component (41) and a driving component (42); The lifting assembly (41) is positioned in the inner cavity of the equipment rack (1) and is connected with the positioning plate (2), and the lifting assembly (41) is used for controlling the positioning plate (2) to move in the inner cavity of the equipment rack (1) along the vertical direction; the driving assembly (42) is positioned on the surface of the positioning plate (2) and is respectively connected with the drill rod (3) and the main shaft (31), and the driving assembly (42) is used for controlling the drill rod (3) and the main shaft (31) to rotate in opposite directions; The drill bit (32) is internally provided with a impurity removing mechanism (5), the impurity removing mechanism (5) comprises a cleaning brush (51) and a positioning assembly (52), and the cleaning brush (51) is arranged in the drill bit (32) and is positioned above the roller cone (33); A positioning assembly (52) is located within the drill bit (32) and is connected to the cleaning brush (51), the positioning assembly (52) being configured to control rotation of the cleaning brush (51) over the cone (33).
  2. 2. A drilling machine for exploiting shale gas according to claim 1, characterized in that the lifting assembly (41) comprises a plurality of groups of threaded rods (411) rotatably installed in the inner cavity of the equipment rack (1), the threaded rods (411) are in threaded connection with the positioning plate (2), the surface of the threaded rods (411) is fixedly provided with a synchronous fluted disc (412), the plurality of groups of synchronous fluted discs (412) are commonly connected with a synchronous belt (413), and the top ends of the groups of threaded rods (411) extend to the surface of the equipment rack (1) and are connected with a first motor (414).
  3. 3. A drilling machine for exploiting shale gas according to claim 1, characterized in that the driving assembly (42) comprises a first positioning inclined fluted disc (421) fixedly arranged at the top end of the drill rod (3), the top end of the main shaft (31) extends to the upper part of the drill rod (3) and is fixedly provided with a second positioning inclined fluted disc (422), the surface of the positioning plate (2) is fixedly provided with a second motor (423), the output shaft of the second motor (423) is fixedly provided with a transmission inclined fluted disc (424), and the first positioning inclined fluted disc (421) and the second positioning inclined fluted disc (422) are respectively connected with the transmission inclined fluted disc (424) in a meshed manner.
  4. 4. The drilling machine for exploiting shale gas according to claim 1, wherein the positioning assembly (52) comprises a rotating column (521) rotatably installed on the inner side wall of the drill bit (32), the roller cone (33) is fixedly installed on the surface of the rotating column (521), the bearing column (522) located above the rotating column (521) is rotatably installed on the inner side wall of the drill bit (32), the plurality of groups of cleaning brushes (51) are uniformly distributed on the surface of the bearing column (522), the guiding fluted discs (523) are fixedly installed on the surfaces of the rotating column (521) and the bearing column (522), and the two groups of guiding fluted discs (523) are commonly connected with the guiding belt (524).
  5. 5. Drilling machine for exploiting shale gas according to claim 1, characterized in that the inner cavity of the drill rod (3) is provided with a chip removal assembly (6), the chip removal assembly (6) comprises a spiral blade (61) fixedly arranged on the surface of a main shaft (31) and positioned in the inner cavity of the drill rod (3), and a chip removal port (62) is formed in the surface of the drill rod (3).
  6. 6. A drilling machine for exploiting shale gas according to claim 1, characterized in that a flushing assembly (7) is arranged in the drill bit (32), the flushing assembly (7) comprises a liquid guide cavity formed in the main shaft (31), a liquid conveying pipe (71) is arranged at the top end of the main shaft (31), the liquid conveying pipe (71) is communicated with the liquid guide cavity, the liquid conveying pipe (71) is connected with an external pump, and the bottom end of the main shaft (31) extends to the inner cavity of the drill bit (32) and is provided with a flushing spray head (72).
  7. 7. The drilling machine for exploiting shale gas according to claim 1, wherein fixing plates (8) are fixedly arranged at the bottom ends of two opposite side walls of the equipment rack (1), and fixing holes (9) are formed in the surface of the fixing plates (8).

Description

Drilling machine for exploiting shale gas Technical Field The invention relates to the technical field of drilling equipment, in particular to a drilling machine for exploiting shale gas. Background The united states has achieved great success in the shale gas revolution, and our country also directs the eye towards shale gas and brings about very large investment demands. By the end of 2020, only gas well drilling has brought a capital requirement of over 4000 billion. But the great need is in sharp contrast to techniques that cannot be commercialized. The cost of the gas well is high, 2 ten thousand yuan is needed for one vertical well, 3 ten thousand yuan is needed for each meter of the horizontal well, and about 1 hundred million yuan is needed for finishing a gas well with the depth of 3000 meters. When the drilling machine performs drilling operation, the roller cone on the surface of the drill bit is generally controlled to crush the front materials. When the cone is broken, the broken bits after smashing are easy to fill and block on the surface of the cone, and then the continuous breaking effect of the cone is reduced, the existing drilling equipment cannot automatically clean the surface of the cone, a drill rod is required to be lifted to take down a drill bit, and then workers manually clean the cone, so that the overall drilling efficiency is lower, and the using effect is poor. Disclosure of Invention The invention aims to provide a drilling machine for exploiting shale gas, which solves the problems in the background art. In order to achieve the above purpose, the present invention provides the following technical solutions: The utility model provides a rig for exploiting shale gas, includes the equipment frame, the equipment frame is rectangular annular structure, the through-hole has been seted up to equipment frame bottom wall, equipment frame inner chamber is along vertical direction slidable mounting has the locating plate, the locating plate diapire rotates and installs the drilling rod, the inside hollow structure that is provided with of drilling rod, the drilling rod bottom is provided with the drill bit, the bottom is provided with multiunit cone in the drill bit, the drilling rod inner chamber rotates and installs the main shaft, the bottom of main shaft is connected with the drill bit, equipment frame inner chamber is provided with control mechanism, control mechanism is including lifting unit and actuating assembly, lifting unit is located equipment frame inner chamber and is connected with the locating plate, and lifting unit is used for controlling the locating plate and moves along vertical direction in equipment frame inner chamber, actuating assembly is located the locating plate surface and is connected with drilling rod and main shaft respectively, actuating assembly is used for controlling drilling rod and main shaft and rotates along opposite direction, be provided with edulcoration mechanism in the drill bit, the edulcoration mechanism is including cleaning brush and locating assembly, the cleaning brush sets up in the drill bit and is in the cone, and is located the top, locating assembly is located in the drill bit and is connected with the cleaning brush and is used for controlling the rotation in the brush. As a further scheme of the invention, the lifting assembly comprises a plurality of groups of threaded rods rotatably arranged in the inner cavity of the equipment rack, the threaded rods are in threaded connection with the positioning plate, the surfaces of the threaded rods are fixedly provided with synchronous fluted discs, the plurality of groups of synchronous fluted discs are commonly connected with a synchronous belt, and the top ends of one group of threaded rods extend to the surface of the equipment rack and are connected with a first motor. As a further scheme of the invention, the driving assembly comprises a first positioning inclined fluted disc fixedly arranged at the top end of the drill rod, the top end of the main shaft extends to the upper part of the drill rod and is fixedly provided with a second positioning inclined fluted disc, the surface of the positioning plate is fixedly provided with a second motor, the output shaft of the second motor is fixedly provided with a transmission inclined fluted disc, and the first positioning inclined fluted disc and the second positioning inclined fluted disc are respectively connected with the transmission inclined fluted disc in a meshed manner. As a further scheme of the invention, the positioning assembly comprises a rotating column which is rotatably arranged on the inner side wall of the drill bit, the roller is fixedly arranged on the surface of the rotating column, the inner side wall of the drill bit is rotatably provided with a bearing column which is positioned above the rotating column, a plurality of groups of cleaning brushes are uniformly distributed on the surface of the bearing column, t