| 摘要 |
<p>The present invention provides a method and apparatus for gripping one or more tubulars (30), which may include casing, during a tubular handling operation, drilling operation, and/or drilling with casing operation. The gripping apparatus (100) comprises a housing (11, 12, 15) having a bore extending therethrough and one or more gripping members (20) which extend radially within the bore to grippingly engage a tubular or casing when activated. Adjustable guides (80) attached to a portion of the gripping apparatus (15) facilitate rotational movement of the casing during the drilling operation when the gripping members (20) of the gripping apparatus (100) are deactivated.</p> |
