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Coring drilling tool based on hydraulic clamping coring

A core drilling tool and core technology, which is applied in the direction of extracting undisturbed core devices, earthwork drilling, engine sealing, etc., can solve the problems of low construction efficiency, affecting the stability of the hole wall, and high labor intensity.

Active Publication Date: 2016-08-31
CCCC FHDI ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the single-tube pumpless drilling tool can increase the core recovery rate in extremely broken and weak formations, the construction efficiency is low and the labor intensity is high due to the need to lift the drill core, and frequent lifting of the drill affects the stability of the hole wall

Method used

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  • Coring drilling tool based on hydraulic clamping coring
  • Coring drilling tool based on hydraulic clamping coring
  • Coring drilling tool based on hydraulic clamping coring

Examples

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Embodiment Construction

[0049] In this embodiment, the core drilling tool based on hydraulic pressure to get the core, such as figure 1 As shown, it includes force transmission transfer mechanism Ⅰ, diversion limit mechanism Ⅱ, pressure storage mechanism Ⅲ, lifting and injection pressure mechanism Ⅳ, hydraulic clamping mechanism Ⅴ, side spray drill bit transfer mechanism Ⅵ, outer pipe assembly and seal system.

[0050] Such as figure 2 As shown, the force transmission transfer mechanism I includes a drill pipe handle 1, a power shaft 2, a different movement handle 3, a double limit nut 4, a conversion handle 5, a force transmission ring 6, a sliding sleeve seat 7, a sliding sleeve 8, and two thrusts up and down. Bearing 9, sealing nut 10 and mandrel adapter 11; the upper end of the power shaft 2 is threadedly connected with the drill pipe adapter 1, and the lower end is threadedly connected with the transfer adapter 5, with a through hole in the axial direction, and the shaft body is provided with ...

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Abstract

The invention discloses a coring drilling tool based on hydraulic clamping coring. The coring drilling tool comprises a force transferring power distribution mechanism, a guide limiting mechanism, a pressure storage mechanism, a lifting pressure injection mechanism, a hydraulic core clamping mechanism, a side spraying drill bit power distribution mechanism, an outer tube assembly and a sealing system, wherein the guide limiting mechanism is butted with the force transferring power distribution mechanism; the pressure storage mechanism is butted with the guide limiting mechanism; the lifting pressure injection mechanism is butted with the pressure storage mechanism; the hydraulic core clamping mechanism is butted with the lifting pressure injection mechanism; the side spraying drill bit power distribution mechanism is butted with the hydraulic core clamping mechanism; the hydraulic core clamping mechanism comprises a bottom bearing platform, a hydraulic membrane, a core inner tube, a clamp spring seat and a clamp spring. The coring drilling tool can reach 100 percent coring rate in soft, loose and broken complex stratums where coring is difficult, provides fully automatic three-dimensional stress to clamp, bind and control cores based on hydraulic pressure, meanwhile is matched with a conventional core clamping and cutting device, and has the characteristics of high reliability, high coring efficiency, high coring quality, high core recovery percentage, wide applicable stratum range and good automation property.

Description

technical field [0001] The invention relates to a core drilling tool for drilling, in particular to a core drilling tool suitable for drilling and coring in complex and difficult coring formations such as weak, loose and extremely broken. Background technique [0002] Drilling technology is currently the only exploration technology method that can take out solid rock and mineral samples from the ground. , environmental scientific drilling, etc., showing the irreplaceable important role of drilling technology. However, the current drilling environment has moved from the shallow surface that is easy to excavate to the deep, and the situation will be that resources are difficult to find, difficult to excavate, higher altitudes, and land shifting to lakes and oceans, which poses higher requirements for drilling efficiency and quality. requirements. The acquisition of true and reliable geological data relies on the ability of drilling technology to cope with different environme...

Claims

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Application Information

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IPC IPC(8): E21B25/00F16J15/18
CPCE21B25/00F16J15/181
Inventor 郝志斌
Owner CCCC FHDI ENG
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