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Liquid sampler

A liquid sampling and liquid technology, applied in the field of samplers, can solve the problems of large vibration force, uncompact backfilling of wellbore soil, and slurry leakage in frozen holes, etc., and achieve the effects of improving accuracy, shortening drilling time, and high sampling success rate

Inactive Publication Date: 2010-03-03
HANDAN SPECIAL SHAFT SINKING CHINA COAL ENERGY GROUP
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AI Technical Summary

Problems solved by technology

[0002] In the construction of the backfill well using the freezing method, due to the lack of compactness of the backfill around the wellbore and the large vibration force during the operation of the equipment, the stratum gradually forms a collapsed area, which makes it very easy to cause slurry leakage during the construction of the freezing hole in the early stage

Method used

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  • Liquid sampler
  • Liquid sampler

Examples

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Embodiment Construction

[0018] As shown in the figure, a liquid sampler is composed of a tube body (4) blocked at one end, a handle (9) is provided at the plugged end of the tube body (4), and a blocking plate at the blocked end of the tube body There is a liquid outlet (7) on the top, and an upper normally closed self-returning liquid one-way valve (6) and a lower normally closed self-returning liquid one-way valve (6) are arranged in the lumen of the pipe body (4) at a certain distance. (2), the upper and lower normally closed self-returning liquid one-way valves divide the lumen into an upper chamber (7), a middle chamber (5) and a lower chamber (1). The blocking plate at the blocking end of the pipe body is a spherical cap, the inner radius of the spherical cap is the same as the inner radius of the pipe body (4), and the outer radius of the spherical cap is the same as the outer radius of the pipe body (4). The inner diameter of the pipe body (4) is 40mm, the outer diameter of the pipe body (4) ...

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Abstract

The invention discloses a liquid sampler comprising a tube body with one plugged end. The plugged end of the tube body is provided with a handle; a plugging plate of the plugged end of the tube plateis provided with a liquid outlet; a tube cavity of the tube body is internally provided with an upper normally-closed self-restoring liquid one-way valve and a lower normally-closed self-restoring liquid one-way valve which are arranged at intervals; and both the upper normally-closed self-restoring liquid one-way valve and the lower normally closed self-restoring liquid one-way valve divide the tube cavity into an upper cavity, a middle cavity and a lower cavity. The liquid sampler is a time-saving sampler capable of conveniently and rapidly extracting liquid samples at different depths in awell shaft.

Description

technical field [0001] The invention relates to a sampler, in particular to a liquid sampler for extracting mud liquid in a wellbore. Background technique [0002] In the construction of the backfill well using the freezing method, due to the lack of backfilling around the wellbore and the large vibration force during the operation of the equipment, the stratum gradually forms a collapsed area, which makes it easy to cause slurry leakage during the construction of the freezing hole in the early stage. When a slurry leakage occurs, how to collect relevant data in a timely and accurate manner plays a vital role in judging the cause of the slurry leakage and formulating targeted measures to stop the leakage. However, in the process of actual data collection, how to verify whether the construction drilling and the wellbore have channeled fluid requires taking out the liquid in the corresponding layer in the wellbore before making a more accurate judgment. Therefore, how to take...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/10F16K15/04
Inventor 张金堂郭永富高玉金申建红乔光磊
Owner HANDAN SPECIAL SHAFT SINKING CHINA COAL ENERGY GROUP
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