Patent ID: 6089338
Filing Date: 2000-07-18
Classification: E21B

Abstract:
A spider apparatus for enclosure within a rotary table opening for angularly adapting to accept and support misaligned pipe in one or more tubing strings, the apparatus comprising:a) a housing having a longitudinal opening extending therethrough, to accept at least one tubing string, and forming opposing downwardly curved surfaces, said housing adapted to be received within the opening of said rotary table;b) a plurality of slip carriers having correspondingly contoured exterior surfaces in rotational engagement with said opposing downwardly curved surfaces of the housing for angularly adapting to misaligned tubing strings, and having downwardly inclined interior surfaces;c) a plurality of slips each having a correspondingly downwardly inclined exterior surface in sliding engagement with a slip carrier, and having longitudinal internal surfaces comprising gripping means for engaging the surface of tubing; andd) opposed longitudinal openings in said slips and slip carriers to provide space within each cooperating slip and slip carrier to accept a longitudinally situated power cylinder arranged to provide longitudinal opening and closing movement of each slip relative to its associated slip carrier.