Boring or penetrating the earth inventions 05/06

20060108148 - Debris reduction perforating apparatus: A perforating apparatus (100) includes a plurality of shaped charges (102) each having a case, an initiation end and a discharge end. A detonating cord (116) is operably associated with the initiation ends of the shaped charges (102). An energy absorbing charge holder (104) has a gas expansion region and...

20060108149 - Method and apparatus for forming bored hole: A method and apparatus for creating a reamed hole below the surface are disclosed. The reaming apparatus is arranged to be connected to one or more boring stems and has an interior section and an exterior section. The interior section is rotatable independently of the exterior section. Reamed holes of...

20060108150 - Drilling and cementing with fluids containing zeolite: Methods and compositions for cementing, especially drilling fluids that comprise zeolite and a carrier fluid, and cementing compositions made with such drilling fluids....

20060108151 - Puller-thruster downhole tool: A method and apparatus for propelling a tool having a body within a passage. The tool includes a gripper including at least a gripper portion which can assume a first position that engages an inner surface of the passage and limits relative movement of the gripper portion relative to the...

20060108152 - Dart-operated big bore by-pass valve: A by-pass tool is provided which has a large bore throughflow passage when in an inactive drilling mode, and which is capable of being activated upon launching of an activation dart from the surface, to an active mode in which drillstring fluids can be diverted to a by-pass port. The...

20060102387 - Internal riser rotating control head: A holding member provides for releasably positioning a rotating control head assembly in a subsea housing. The holding member engages an internal formation in the subsea housing to resist movement of the rotating control head assembly relative to the subsea housing. The rotating control head assembly is sealed with the...

20060102388 - Drilling tool: A drilling tool (10) includes a pilot bit (14) and a plurality of mills (16) encircling the pilot bit. The pilot bit and the plurality of mills are each driven by a separate, hydraulically powered turbine or positive displacement motor. (20) The drilling tool does not include a transmission for...

20060102389 - Polycrystalline cutter with multiple cutting edges: A cutting element includes a layer of integrally bonded superabrasive particles disposed over a substrate. The layer has an outer circumference comprising at least one trough having a distinct cutting point on either side of the trough. A rock drilling drag bit incorporating the cutting element and a method of...

20060102390 - Drill cuttings conveyance systems and methods: Vessels, system and methods for conveying drilling cuttings material, which, in certain aspects, include a system for conveying material from a vessel, the system having a vessel for receiving material to be conveyed, a first conduit for conveying air, a second conduit for receiving air from the first conduit and...

20060096782 - Self relieving seal: Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal body between the first and second sealing...

20060096783 - Method and apparatus for slant drilling: A rig for drilling wells or holes at virtually any angle, from nearly horizontal to vertical, has a trailer mounted derrick which can be tilted to a desired angle, a top drive unit slidably mounted within such derrick and a hydraulic jacking apparatus. An automated pipe handling apparatus permits efficient...

20060096784 - Device for advancing drillings in the ground: The device for driving boreholes in the ground comprises a rotationally driven main shaft (12) having a shaft journal (11) whose axis (B) forms an acute angle (w) with respect to the axis (A) of the main shaft (12), and an ear head (1) which is mounted such that it...

20060096785 - Expandable bit: A bit has been invented that is expandable from a collapsed position, useful for tripping, to an radially expanded position for use. The bit is useful to form a borehole through an earthen formation. In one embodiment, the bit can be used alone, without a separate under reamer, to expand...

20060096786 - Re-settable locking mechanism for downhole tools: The present invention generally comprises a tubular body which is adapted to be attached to a drill string, where the body defines a bore therethrough which accommodates a piston slidably disposed between a first and second position. This piston is aligned generally normally respect to an actuating piston and an...

20060096787 - Bit retainer system: A bit retainer system comprising a casing, a driver sub adapted to be disposed around a shank of a bit, and a bit retainer. The driver sub comprises a threaded connector, a threaded pin end configured to engage with the hammer case, and a stop. The bit retainer comprises a...

20060096788 - Reamer assembly: A reamer assembly for widening a drilled pilot hole or for widening a hole that has been widened in a first step in a down-the-hole drilling operation, includes a shank (14) for attachment of the reamer to the end of a down-the-hole hammer drill and a conical drill bit or...

20060090934 - Formation dip geo-steering method: A method of drilling a well. The method includes calculating an estimated formation dip angle, wherein said estimated formation dip angle being based on offset well data, seismic data, core data, pressure data. Next, the method includes drilling a well with a logging while drilling means so that real time...

20060090935 - Steerable drilling apparatus having a differential displacement side-force exerting mechanism: An apparatus for steerable rotary drilling of a borehole having a wall in the earth comprising, a mandrel, having a central opening there through for the passage of drilling fluids, said mandrel having a lower connection for operatively connecting to a drill bit structure, said mandrel having an upper connection...

20060090936 - Methods for making a turbodrill: A turbodrill has rotor vanes and stator vanes that are asymmetric with respect to each other. The rotor blade on which the rotor vanes are disposed has a reaction of less than about 0.5. A method of designing a turbodrill comprises optimizing a first design of stator vanes and optimizing...

20060090937 - Drill bit cutting elements with selectively positioned wear resistant surface: Drill bits comprise a plurality of steel cutting teeth each having a crest positioned at a tip portion of each tooth, a first flank surface extending from the crest to the cone, a second flank surface opposite the first flank surface and extending from the crest to the cone, and...