发明名称 PARTIAL COIL-IN-COIL TUBING
摘要 <p>A dual tubing coiled tubing string, including methods of assembly, that includes an inner tubing (IT) sealed by a seal (SL) within at least an upper portion of an outer tubing (OT).</p>
申请公布号 WO2001020213(A1) 申请公布日期 2001.03.22
申请号 US1999020822 申请日期 1999.09.10
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