发明名称 |
Systems and methods for installation, design and operation of groundwater monitoring systems in boreholes |
摘要 |
Systems and methods for installation and operation of a groundwater monitoring system in a borehole of any angle using a coaxial gas displacement pump with a unique O-ring assembly that serves as a two-position valve for groundwater purging and sampling and also as a housing and sealing mechanism for isolating an optical pressure sensor. The optical sensor measures in-situ hydraulic pressure directly subjacent and adjacent to the surrounding rock fractures and sediment pores without hydraulic interferences from potentiometric equilibration lag time from recovery fluid pressure inside a borehole, in a zone above the optical sensor, or on the inside of a riser pipe that rises to the ground surface.
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申请公布号 |
US7493954(B2) |
申请公布日期 |
2009.02.24 |
申请号 |
US20050178055 |
申请日期 |
2005.07.08 |
申请人 |
BESST, INC.;KAJIMA CORPORATION |
发明人 |
HELLER NOAH;ATSUMI HIROYOKI;TOIDA MASARU;CHINO TORU |
分类号 |
E21B49/08 |
主分类号 |
E21B49/08 |
代理机构 |
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