Patent ID: 6675919
Filing Date: 2004-01-13
Classification: E21B

Abstract:
A drive shoe assembly for pile driving surface conductor tubulars into an earthen formation so that said surface conductor tubulars are permanently positioned in said earthen formations, comprising:a tubular drive shoe having a first end suitable for attachment to said surface conductor tubulars, said tubular drive shoe having a second end, said drive shoe and said surface conductor tubulars in combination defining an inner surface and an outer surface; an earth formation displacing structure for compressing said earthen formation, said earth formation displacing structure disposed proximate at least one of said outer surface or said inner surface, said earth formation displacing structure comprising at least one circumferential band; and said earth formation displacing structure compresses said earthen formation away from said at least one of said outer surface or said inner surface for enabling enhanced penetration of said tubular into said earthen formation.