发明名称 Methods for recovery and reuse of lost circulation material
摘要 A system for recovering lost circulation material from spent drilling fluid, the spent drilling fluid containing lost circulation material, drilling fluid, and undesirable solids, the system having alternating separation apparatuses, including sizing apparatus, destiny/shear separation apparatus, and sizing apparatus; and methods for using such a system.
申请公布号 US7568535(B2) 申请公布日期 2009.08.04
申请号 US20070001490 申请日期 2007.12.11
申请人 NATIONAL OILWELL VARCO LP 发明人 LARSON THOMAS ROBERT;PROVOST ERIC SIMON
分类号 E21B21/06 主分类号 E21B21/06
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