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| Number | Title | Issue Date |
| 8016053 | Drill bit configurations for parked-bit or through-the-bit-logging Disclosed drilling systems offer multiple methods providing access to the open borehole without first tripping the drill string. In some embodiments, a drill bit has a tool port that is blocked by a plug during normal drilling operations. When a tool is deployed thr... | 09/13/2011 |
| 7413035 | Reusable auger barrel An apparatus that facilitates the insertion of a stanchion into the ground. The apparatus comprises a first side including a plurality of connection apertures, a second side including a plurality of connection apertures, and at least one connector engaging the conne... | 08/19/2008 |
| 7287609 | Drilling a borehole A method of drilling a borehole into a subsurface earth formation, using a tubular drill string which includes at its lower end a bottom hole assembly comprising a drill bit, a drill steering system, and a surveying system. The drill string includes a selectively cl... | 10/30/2007 |
| 7165634 | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 01/23/2007 |
| 7147068 | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 12/12/2006 |
| 7048050 | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 05/23/2006 |
| 7036610 | Apparatus and method for completing oil and gas wells A method of drilling and completing a wellbore in a geological formation to produce hydrocarbons from a well comprising at least the following four steps: drilling the well with a retrievable drill bit attached to a casing; removing the retrievable drill bit from th... | 05/02/2006 |
| 6652195 | Method and apparatus for forming piles in place A screw pier has an elongated shaft with a screw adjacent one end thereof. Soil displacing members are disposed on the shaft. The soil displacing members may be drawn through soil by turning the screw. A soil displacing member closer to the screw may be s... | 11/25/2003 |
| 6557654 | Drill pipe having a journal formed thereon A drill pipe (1; 12) has a journal (2; 15) formed thereon. Integrally formed stop collars (10, 11; 16, 17) are provided at each end of the journal (2; 15). The arrangement enables rotatable tools (18) to be fitted directly to a journal (2; 15) to reduce f... | 05/06/2003 |
| 6550553 | Boring apparatus Apparatus for boring a hole from an inside of a tube outwardly perpendicular to a longitudinal axis of the tube comprises a drill shoe having a longitudinal axis and being positionable in the tube, the shoe having an inlet, an outlet perpendicular to the ... | 04/22/2003 |
| 6435776 | Method and apparatus for forming piles in place A screw pier has an elongated shaft with a screw adjacent one end thereof. Soil displacing members are disposed on the shaft. The soil displacing members may be drawn through soil by turning the screw. A soil displacing member closer to the screw may be s... | 08/20/2002 |
| 6378629 | Boring apparatus Apparatus for boring a hole from an inside of a tube outwardly perpendicular to a longitudinal axis of the tube comprises a drill shoe having a longitudinal axis and being positionable in the tube, the shoe having an inlet, an outlet perpendicular to the ... | 04/30/2002 |
| 4962822 | Downhole drill bit and bit coupling A downhole impact drill having a drill bit head with a drill bit sector for drilling an enlarge hole upon rotation of the drill. The bit is mounted within a chuck for movement between a retracted, working position in which the bit is coaxially mounted for... | 10/16/1990 |
| 4893684 | Method of changing well fluid A well bore annulus wiper plug is disclosed. The wiper plug has a central body and inner and outer elastomeric ribs. The ribs are generally in the shape of truncated cones. To operate the device, it is inserted in the annular space between well casing and... | 01/16/1990 |
| 4691789 | Process for establishing a clear horizontal borehole in a subterranean formation A process for establishing a clear, generally horizontal borehole path in a subterranean formation includes drilling a generally horizontal borehole using a drill pipe, drill bit and an uphole drilling device and lubricating the drill bit and pipe by pump... | 09/08/1987 |
| 4644715 | Soil excavating sleeve A soil excavating and utility pole securing sleeve is disclosed which will, when rotated around a standing utility pole, excavate an annulus of soil between the pole and the interior of the sleeve. The excavating sleeve defines an elongated hollow cylinde... | 02/24/1987 |
| 4531596 | Tool for boring an enlarged portion within the interior of a hole and a tiltable tool for completing that tool An improved boring tool comprising a longitudinal groove in its shaft and a two-armed tool within the groove is provided for boring an enlargement within a hole. The two-armed tool has a rear actuating arm and a forward cutting arm and is tiltably support... | 07/30/1985 |
