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Ground directly-through downhole drilling device integrating water pumping and water draining tests

A drilling device and water pumping test technology, which is applied in earth-moving drilling, wellbore/well components, measurement, etc., can solve problems such as difficult control, complex process, and inability to use long-distance automatic monitoring, saving drilling costs, calculating Data is easily available and reliable, the effect of automatic real-time collection and analysis of data

Inactive Publication Date: 2017-05-31
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a ground-through downhole drilling device integrating water pumping and water drainage tests, which can realize water pumping and water drainage tests, and can monitor the water level and water temperature of an aquifer in real time, etc. It solves the problems that the current pumping and drainage tests are separately constructed and drilled, resulting in cumbersome links, complicated processes, difficult control and inability to be used for remote automatic monitoring on the ground

Method used

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  • Ground directly-through downhole drilling device integrating water pumping and water draining tests
  • Ground directly-through downhole drilling device integrating water pumping and water draining tests

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Embodiment

[0024] Combined with the successful cases of the aquifer (bottom aquifer) of the extremely thick unconsolidated layer in a mine of Yankuang Group Co., Ltd. figure 2 As shown, the structure of the Quaternary bottom pumping test borehole is as follows:

[0025] (1) 0-124.94m aperture Ф270mm, run in Ф194×8mm anti-wire water stop casing a and Ф240mm taper water stop, and use cement slurry to solidify the pipe;

[0026] (2) 124.94-154.20m aperture Ф250mm, of which, 127.94-154.20m is lowered into Ф194×6mm water filter flower pipe, 8# iron wires are welded outside the pipe, and three layers of 120 mesh nylon mesh are outsourced, and 16# iron wire with a spacing of 0.15m is used for external use Bundling in sections; 156.00-158.00m into the Ф146×8mm grit settling solid pipe and Ф127×4mm grit settling casing, and use cement slurry to solidify the pipe;

[0027] (3) 158.00-225.00m aperture Ф113mm, run in Ф89×4.5mm anti-wire water-stop casing b, and use cement slurry to solidify the pi...

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Abstract

The invention discloses a ground directly-through downhole drilling device integrating water pumping and water draining tests. The drilling device comprises a water pumping test device, a water draining test device, a ground directly-through downhole drilling hole and a ground integrated receiving device. Reverse-wire water stopping sleeves a, taper water stopping devices, water spray filtering pipes, sand setting solid pipes and reverse-wire water stopping sleeves b are sequentially arranged from the ground to the downhole in the drilling hole. The water spray filtering pipes are located in an aquifer; sand setting sleeves are arranged in the sand setting solid pipes; and a water-level water temperature sensor is mounted in the drilling hole. The water draining test device comprises five flange plates and magnetic vortex flow sensors which are arranged in an underground roadway in a step-by-step variable diameter mode, and a gate valve is mounted between the bottom of the drilling hole and the water draining test device. The needs of the water pumping tests or water draining tests are fully considered, one hole meets dual-use, the disadvantage of general inconvenient construction in downhole is overcome, and ground real-time automatic monitoring of quantized data of the water level and water temperature and the like of the target aquifer is realized.

Description

technical field [0001] The invention relates to a ground-through underground drilling device integrating pumping and draining tests, and belongs to the technical field of pumping and draining tests. Background technique [0002] At present, the pumping test and the drainage test of an aquifer are generally carried out independently. Generally, the pumping test is carried out through the ground construction drilling, and the drainage test is performed through the drainage drilling of the underground construction. Therefore, two boreholes need to be constructed, and the construction and monitoring of underground water drainage boreholes are more restricted by roadway conditions, and it is difficult to collect data. Contents of the invention [0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a ground-through downhole drilling device integrating water pumping and water drainage tests, which can realize water pumping and w...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B47/047E21B47/07
CPCE21B47/00E21B47/047E21B47/07
Inventor 朱术云官云章李运江孟昭河刘延欣胡东祥武宇亮
Owner CHINA UNIV OF MINING & TECH
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