Rope rotation type heat preservation and pressure holding sampling drilling tool
A rotary and rope technology, applied in the field of drilling, can solve the problems of difficult realization of the sampler, poor thermal insulation and pressure holding performance, and low sampling rate of thermal insulation and pressure holding samples, so as to achieve high sampling success rate and solve the problem of poor insulation and pressure holding performance Effect
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[0046] The present invention will be described in detail below with reference to the drawings.
[0047] The rope rotary type thermal insulation pressure-maintaining sampling drilling tool of the present invention consists of a sampling outer tube assembly ( figure 1 Shown) and the sampling inner tube assembly ( image 3 Shown) constitute.
[0048] Such as figure 1 , 2 As shown, the sampling outer tube assembly includes a cartridge stopper (1), cartridge chamber (2), seat ring (3), seat ring connector (4), and outer cylinder (5) arranged in order from top to bottom , Centralizer (6) and PDC core bit (7), all the above components are connected in sequence from top to bottom, the seat ring (3) is set on the step support surface in the seat ring connector (4), and the elastic stopper The upper end of the head (1) is connected with the drill collar through a thread, and the sampling inner tube assembly suspension system (10) is seated on the seat ring (3) of the outer tube assembly to r...
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