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An ultra-deep self-balancing in-situ testing system and construction method while drilling

A technology of in-situ testing and construction methods, applied in drill pipe, measurement, drill pipe and other directions, can solve the problems of limited testing depth, difficult to meet the development and utilization of deep underground space, etc., and achieve the effect of increasing the application depth

Active Publication Date: 2022-07-29
SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The testing depth of traditional in-situ testing equipment is limited, and it is difficult to meet the needs of the development and utilization of deep underground space. It is urgent to develop and research a complete set of in-situ testing equipment and construction methods suitable for deep underground space.

Method used

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  • An ultra-deep self-balancing in-situ testing system and construction method while drilling
  • An ultra-deep self-balancing in-situ testing system and construction method while drilling
  • An ultra-deep self-balancing in-situ testing system and construction method while drilling

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Embodiment Construction

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] The specific implementation of this case proposes an ultra-deep self-balancing in-situ testing system while drilling, such as Figures 1 to 9 , the device specifically includes: an in-situ test assembly 1, a drilling equipment 2, a cable storage device 3, and a signal receiving device 4;

[0034] like figure 2 , The in-situ test assembly 1 consists of a test device 11 , a power device 12 , a control and transmission device 13 , a suspension positioning device 14 , and a cable 15 in order from bottom to top, and each device is fixedly connected.

[0035] The testing device 11 is used for static penetration and consists of a probe rod and a probe.

[0036] The power device 12 adopts a hydraulic oil cylinder, and by applying a downward static pressure force to the static probe testing device 11, the static penetration probe penetrates into...

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Abstract

In the present invention, the in-situ test assembly is built into the drill pipe, the inner wall of the drill pipe is provided with a positioning step, and the in-situ test assembly is provided with a locking structure, so that the in-situ test assembly is locked when it is lowered to the test depth, and the power device is directed to the test device. When the downward force is applied, the reaction force is balanced by the self-weight of the drilling rig to realize the self-balancing test. The system and method realizes alternately performing rotary drilling and in-situ testing without lifting the drill pipe, and increases the application depth of in-situ testing through drilling assistance.

Description

technical field [0001] The invention relates to an ultra-deep self-balancing in-situ testing system and a construction method while drilling, and belongs to the technical field of in-situ testing. Background technique [0002] Geotechnical investigation in-situ testing technology can provide reliable geotechnical physical and mechanical property parameters for underground space engineering design. With the development of deep underground space development projects, it is necessary to obtain deeper geotechnical physical and mechanical property parameters through in-situ testing. The traditional in-situ testing equipment has a limited testing depth, which is difficult to meet the needs of the development and utilization of deep underground space. It is urgent to develop and research a complete set of in-situ testing equipment and construction methods suitable for deep underground space. SUMMARY OF THE INVENTION [0003] The present invention aims to propose an ultra-deep sel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/12E21B17/02E21B17/04
CPCE21B47/12E21B17/023E21B17/04
Inventor 金宗川梁振宁曹兴国沈蒙孙莉吴来杰张静陈琛邓海荣李晓飞张晗蔡永生谢飞
Owner SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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