Equalizer valve assembly
作者： Brett A. Fears , Henry E. Rogers , David Durward Szarka
DOI:
关键词:
摘要: A method for controlling a fluid pressure applied to cementing plug comprises disposing the within casing string define trapped volume of string, isolating portion adjacent an isolated fluid, and relieving at first rate sufficient prevent damage or inadvertent release plug. An apparatus being run into well bore least one equalizer valve connected work extending sealing device disposed above seal annular space formed between string.
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