Rotary hot-melting drill bit

A technology of hot-melt drill bits and drill bits, which is applied in the direction of drill bits, thermal energy drilling, drilling equipment, etc., can solve the problems of hot-melt directional drilling tools that have not been introduced, and achieve good compatibility, reduce costs, and increase service life.

Inactive Publication Date: 2012-12-26
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The research on hot-melt directional drilling tools has not seen the introduction of domestic and foreign literature

Method used

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  • Rotary hot-melting drill bit
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  • Rotary hot-melting drill bit

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Embodiment Construction

[0015] see figure 1 figure 2 and image 3 As shown, the present embodiment is composed of two independent heating modules 19 and one non-heating module 21, two independent heating modules 19 and one non-heating module 21 form a round head-shaped drill 10, and the bottom of the drill 10 is provided with drainage Port 20, the water suction pipe 18 of the upper drilling tool drainage pump can be installed near the water port 20, the drain port 20 can drain the molten water at the bottom of the hole in time, which is conducive to heat transfer, the heating module 19 is a cast copper heater, and the heating module 19 The side and inner surface of the ice cube are coated with heat-insulating paint, which is conducive to heat transfer through the outer surface to the ice layer.

[0016] The inner wall of the heating module 19 has a wire joint 9, the wire joint 9 is connected to the wire 15, the other end of the wire joint 9 is connected to the slip ring terminal 6, and the wire jo...

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Abstract

The invention discloses a rotary hot-melting drill bit. The rotary hot-melting drill bit is a round head shaped drill bit consisting of two independent heating modules and an un-heating module, wherein a water outlet is arranged at the bottom of the drill bit; when the two heating modules work to normally drill in a rotary manner, the heat of the heating modules can be uniformly transmitted all around through the rotation, so that an ice layer is molten, thereby achieving the vertical hole drilling operation; when the two heating modules work, and do not drill in a rotary manner, the ice layer adjacent to the two heating modules is continuously molten by absorbing heat, and the ice layer on the side of the non-heating module is slowly molten or not molten, so that the drill is inclined to change the drilling direction, thereby achieving the orientation. The rotary hot-melting drill bit well solves the difficulty of drilling and orientating in the ice layer in a polar region; the drill bit is well compatible with the current drill, so that the orientation drill can be used only by matching the control system with the current hot-melting drill with a drill bit circuit almost without changing the upper mechanical structure. The rotary hot-melting drill bit adopts a modular design, has a simple structure and is easy to change, thereby greatly increasing the service life and the using efficiency of the drill bit.

Description

technical field [0001] The invention relates to a rotary hot-melt drill bit used for drilling directional wells in polar ice layers. Background technique [0002] At present, the hot-melt drilling tools used in the world are mostly used for drilling vertical holes. When there is an accident in the main hole or a branch hole needs to be opened, it is necessary to lower the bottom of the hole and use a special tool to expand the bottom of the hole, and then The hot-melt drilling tool is lowered, and with the help of the inclined surface of the whipstock, the drilling tool is tilted to realize the drilling of the inclined hole. But adopt this method to drill into the inclined hole, the drilling tool has a tendency to deviate to the vertical direction all the time under the action of dead weight, also must return to the vertical direction after a period of time, can not realize the inclined hole drilling. With global warming and the in-depth study of polar ice sheets, more and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/15E21B7/04E21B10/00E21B36/04E21B4/04
Inventor 孙友宏毛建设范晓鹏帕维尔达拉拉伊张楠薛军曹品鲁于达慧李强胡正毅杨成宫达
Owner JILIN UNIV
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