ANNULUS SAMPLE CHAMBER, FULL BORE, ANNULUS PRESSURE RESPONSIVE SAMPLER
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机译:环形样品室,全孔,环形压力响应式采样器
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摘要
ABSTRACTAn annulus pressure responsive samplervalve comprising a power section and a sampler sec-tion having an annular sample chamber therein; thesampler valve having a full bore therethrough.
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