Probes for measuring formation pressure
A technology of formation pressure and measurement components, which is applied in the direction of measurement, wellbore/well components, earthwork drilling and production, etc. It can solve problems such as stuck pipe and probe cannot be retracted normally, and achieves the effect of being easy to be cut off
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[0025] The present invention will be further described below in conjunction with accompanying drawing.
[0026] figure 1 A probe 10 for measuring formation pressure according to the present invention is schematically shown. The probe 10 for measuring formation pressure includes a casing 16, and a first protruding hole 17 is arranged on the peripheral wall of the casing 16. Inside the housing 16 a measuring assembly is mounted.
[0027] The measuring assembly comprises an axially mounted piston cylinder 15 , ie the axis of the piston cylinder 15 is perpendicular to the axis of the housing 16 . A second protruding hole 18 is provided on the first end of the piston cylinder 15 facing outward, and the second protruding hole 18 is radially aligned with the first protruding hole 17 . The second end of the piston cylinder 15 lying opposite the first end is closed with an end cap 60 . A cylindrical guide structure 61 for guiding the movement of the piston 20 and the filter 30 desc...
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