Drill rod cutter
A cutter and drill pipe technology, which is applied in the direction of earthwork drilling, wellbore/well parts, etc., can solve the problems of uneven distribution of cutting force, unstable cutting, etc., and achieve uniform distribution of cutting force, small pressure fluctuations, and reduce vibration Effect
Pending Publication Date: 2020-06-02
无锡锡钻地质装备有限公司
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- Abstract
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- Application Information
AI Technical Summary
Problems solved by technology
There is a cutting tool in the existing technology, but the cutter head is inclined in and out, the cutting force is unevenly distributed, and the cutting is unstable. The existing technology urgently needs a stable and easy-to-use drill pipe cutter
Method used
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Embodiment Construction
[0021] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0022] First, briefly introduce the structural principle of the existing cutting tool, including an outer casing 31, an inner ejector rod 32, the bottom of the inner ejector rod 32 is rotatably connected with a cutter head 33, and the bottom of the outer casing 31 is provided with a guide block 34, the guide block 34 is provided with a guide inclined surface 35, the guide inclined surface 35 cooperates with the arc surface 36 at the lower part of the cutter head 33 to guide, when the inner ejector rod 32 slides under pressure, the arc surface 36 cooperates with the guide inclined surface 35, Forcing the cutter head 33 to rotate around the rotating pin 37, t...
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Abstract
The invention discloses a drill rod cutter. The drill rod cutter comprises a cutting tool tube, an ejector pin is axially and slidably connected into the cutting tool tube, an ejection conical surfaceis arranged on the lower part of the ejector pin, a cutting tool connecting section is arranged on the lower part of the cutting tool tube, cutting tool sliding holes arranged in the radial directionare formed in the cutting tool connecting section in a surrounding mode, cutter head sliding blocks are arranged in the cutting tool sliding holes in a sliding fit mode, the inner edges of the cutterhead sliding blocks are matched with the ejection conical surface for driving, and cutting heads are fixed to the outsides of the cutter head sliding blocks; and a return spring which restricts the cutting heads from protruding out of the outer edges of the cutting tool sliding holes is arranged on the outer wall of the cutting tool connecting section. With the design, the cutting tool tube is slid along a drill rod to the position of a clamping rod, the ejector pin is driven to protrude the cutting heads out of the cutting tool sliding holes, the cutting heads block the external drill rod asthe cutting tool tube rotates, and the drill rod on the upper part of the clamping rod is pulled out for being reused.
Description
technical field [0001] The invention relates to a drill pipe cutter. Background technique [0002] During the use of drilling tools, due to geological reasons or other reasons, the drill pipe is often stuck in the drill hole and cannot be rotated and pulled out. In order to minimize the loss, it is necessary to cut the drill pipe, and remove The drill pipe is pulled out and reused. There is a cutting tool in the prior art, but the cutter head is inclined in and out, the cutting force is unevenly distributed, and the cutting is unstable. The existing technology urgently needs a drill pipe cutter with stable operation and easy use. Contents of the invention [0003] The object of the present invention is to overcome the defects in the prior art and provide a drill pipe cutter with stable operation and convenient use. [0004] In order to achieve the above object, the technical solution of the present invention is to provide a drill pipe cutter, including a cutter tube, an ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B29/00
CPCE21B29/005
Inventor 徐颂贤张世文
Owner 无锡锡钻地质装备有限公司