Observation instrument embedded blockage system for drilling hole high-pressure packer test
A technology of observation instruments and high-pressure pressurized water, used in surveying, earthwork drilling, wellbore/well components, etc., can solve the problems of difficult to guarantee construction quality, large system resistance, failure of observation instruments, etc., to overcome the lack of plugging technology , Increase the insurance factor and ensure the effect of the blocking effect
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[0022] An observation instrument embedding plugging system for high-pressure water pressure test in boreholes, such as figure 1 As shown, it comprises the test observation hole 9 opened in the rock body, and one end of a casing 11 stretches into the bottom of the test observation hole 9, and the bottom of the casing is blocked by a bulky head 17. An observation instrument (piezometer) 16 is fixed on the bottom end of the casing 11, and its cable 1 passes through the casing 11 to extend out of the test observation hole 9, and the outside of the observation instrument (piezometer) 16 is covered by a sleeve Pipe 11 and plugging blockage 17 are protected. Above the sleeve pipe 11 end of the fixed observation instrument (osmometer) 16, a 20cm long flower tube section 14 is set, that is, the flower tube section 14 is provided with a water hole 15 through inside and outside, so that the observation instrument (osmotic pressure) inside the sleeve pipe Meter) 16 is in communication wi...
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