Salvage method of down-the-hole hammer drilling tool
A technology for down-the-hole hammers and drilling tools, which is applied in the direction of drill pipes, drill pipes, earthwork drilling, etc., and can solve problems such as the difficulty of fishing for down-the-hole hammer drilling tools, and achieve the effects of easy and rapid salvage, high efficiency, and cost reduction
Active Publication Date: 2022-03-22
SHENZHEN GONGKAN GEOTECHN GRP +1
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Problems solved by technology
[0005] The purpose of the present invention is to provide a fishing method for down-the-hole hammer drilling tools, aiming to solve the problem of difficult fishing for down-the-hole hammer drilling tools in the prior art
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[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0040] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.
[0041] In the drawings of this embodiment, the same or similar symbols correspond to the same or similar components; The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orien...
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The invention relates to the technical field of accident handling in the hole of a down-the-hole hammer drilling tool, and discloses a fishing method for a down-the-hole hammer drilling tool, which includes the following steps: removing the falling drilling tool sediment in the hole; installing the catcher on a lifting device The catcher has a through hole, and the side wall of the through hole is provided with a detent moving in a direction toward or away from the through hole, and the detent protrudes from the through hole. Connecting hole; the butting connecting hole is used to dock the hexagonal head of the drilling tool, and the bayonet pin is used to be embedded in the pin hole of the hexagonal square head; the catcher is lowered into the hole, and the drilling tool is captured; Fish the drilling tool out of the hole; unlock and separate the drilling tool from the catcher. The fishing method for the down-the-hole hammer drilling tool provided by the technical proposal of the invention is easy and fast to fish.
Description
technical field [0001] The patent of the present invention relates to the technical field of in-hole accident handling of down-the-hole hammer drilling tools, and specifically relates to a fishing method for down-the-hole hammer drilling tools. Background technique [0002] When the cast-in-situ pile is drilled with a down-the-hole hammer, the high wind pressure provided by the air compressor is used as the power. The high wind pressure enters the down-the-hole hammer impactor through the air pipe and the inner cavity of the drill pipe, and drives the down-the-hole hammer bit to perform high-speed reciprocating impact operations. The slag and debris broken by the down-the-hole hammer are carried by the high wind pressure to the ground along with the gap between the drill pipe of the down-the-hole hammer and the hole wall. [0003] The down-the-hole hammer impactor is connected to the drill pipe through a hexagonal joint. The hexagonal joint is composed of a hexagonal head, a...
Claims
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IPC IPC(8): E21B31/20E21B17/02
CPCE21B31/20E21B17/021
Inventor 童心尚增弟雷斌黄凯李波李新元刘治军杨静
Owner SHENZHEN GONGKAN GEOTECHN GRP