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| Number | Title | Issue Date |
| 7392858 | Remote control for a drilling machine A method and apparatus for remotely controlling a machine. A remote operator controls a tracking device including a signal system for selectively emitting a remote enable signal. The remote enable signal is relayed to a control system for the machine. The control sy... | 07/01/2008 |
| 7290625 | Reverse-circulation drilling method and system A reverse-circulation drilling method and system includes a drill bit, a drill string having drill rods, and a rotary table or power swivel for bringing the drill bit into rotation by means of the rods. The system includes a positive-displacement pump made up of a s... | 11/06/2007 |
| 7264690 | Catalyzer for clean pulping and process for using the same A catalyzer for clean pulping includes sodium salicylate, anion silicate softener, cooking aids, liquid(gaseous) chlorine and water. A process for using the catalyzer for clean pulping includes the following steps: 1, cutting and impurities removing for the r... | 09/04/2007 |
| 7264048 | Slot cavity A method for accessing a subterranean zone from the surface includes drilling a substantially vertical well bore from the surface to the subterranean zone and forming a slot cavity in the substantially vertical well bore proximate to the subterranean zone. The slot ... | 09/04/2007 |
| 7213644 | Cavity positioning tool and method In accordance with the teachings of the present invention, a method is provided for preventing formation of sludge in a subsurface cavity having particulate laden fluid disposed therein. The method includes positioning a downhole device having a fluid agitator into ... | 05/08/2007 |
| 7207395 | Method and system for testing a partially formed hydrocarbon well for evaluation and well planning refinement A method and system for testing a partially formed well includes forming a first well bore intersecting a subterranean formation. The first well bore includes a portion of a planned well having a first configuration. A production characteristic of the subterranean f... | 04/24/2007 |
| 7207390 | Method and system for lining multilateral wells In accordance with one embodiment of the present invention, a method for lining a lateral wellbore includes drilling a main wellbore extending from a surface to a subterranean zone, casing the main wellbore with a main casing having a plurality of lateral wellbore w... | 04/24/2007 |
| 7163063 | Method and system for extraction of resources from a subterranean well bore A method for stimulating production of resources from a coal seam includes forming a drainage well bore in the coal bed that has a first end coupled to a ground surface and a second end in the coal seam. The method further includes inserting a liner into the well bo... | 01/16/2007 |
| 7144232 | Water well pump The present invention contains a one-way standing valve holder and a one-way traveling valve holder. Contained within a shell of the standing valve holder are a nipple at the upper end and an intake tube at the lower end. A piston rod extends down from the earth's s... | 12/05/2006 |
| 7134512 | Method of downhole drilling and apparatus therefor A downhole drilling apparatus suspended by tubing includes a drill bit driven by an electric motor powered by a cable means. The motor is mounted upon a hollow shaft which allows fluid to pass through, so that a fluid circuit along the tube and back along the annulu... | 11/14/2006 |
| 7114271 | Cutting tool for digging trenches, and enabling the cutter head to be changed quickly The invention relates to a cutting tool for digging vertical trenches, the tool comprising: a jib (B); a cutter structure (34; C) suspended from the jib via a cable; a plurality of cutter me... | 10/03/2006 |
| 7100687 | Multi-purpose well bores and method for accessing a subterranean zone from the surface A well system includes at least two well bores extending from a surface to a subterranean zone. Each of the two well bores is used to form a well bore pattern for the subterranean zone that intersects the other well bore and transports fluid from the subterranean zo... | 09/05/2006 |
| 7096979 | Continuous on-bottom directional drilling method and system A method of and system for directional drilling alternate between rotary drilling and sliding drilling with the bit remaining in continuous contact with the bottom of the bore hole. ... | 08/29/2006 |
| 7073595 | Method and system for controlling pressure in a dual well system A method for controlling pressure of a dual well system includes drilling a substantially vertical well bore from a surface to a subterranean zone and drilling an articulated well bore from the surface to the subterranean zone using a drill string. The articulated w... | 07/11/2006 |
| 7048049 | Slant entry well system and method A system for accessing a subterranean zone from the surface includes an entry well bore extending down from the surface. A plurality of slanted well bores extend from the entry well bore to the subterranean zone. Drainage patterns extend from the slanted well bores ... | 05/23/2006 |
| 7036584 | Method and system for accessing a subterranean zone from a limited surface area A method and system for accessing subterranean resources from a limited surface area includes a first well bore extending from the surface to the target zone. The first well bore includes an angled portion disposed between the target zone and the surface to provide ... | 05/02/2006 |
| 7025137 | Three-dimensional well system for accessing subterranean zones A drainage system for accessing multiple subterranean zones from the surface includes an entry well extending from the surface. The system also includes two or more exterior drainage wells extending from the entry well through the subterranean zones. The exterior dr... | 04/11/2006 |
| 7025154 | Method and system for circulating fluid in a well system A method for circulating drilling fluid in a well system includes drilling a substantially vertical well bore from a surface to a subterranean zone and drilling an articulated well bore from the surface to the subterranean zone. The articulated well bore is horizont... | 04/11/2006 |
| 7011167 | Device for sealing a drill hole and for discharging drillings or stripped extraction material In a device for sealing a bore hole and discharging drill cuttings and stripped excavation material, including a housing adapted to receive sealing elements and an opening capable of being connected to the bore hole, one side wall of the housing is provided with at ... | 03/14/2006 |
| 6976533 | Method and system for accessing subterranean deposits from the surface Improved An improved method and system for accessing subterranean deposits from the surface that substantially eliminates or reduces the disadvantages and problems associated with previous systems and methods. In particular, the present invention provides an articul... | 12/20/2005 |
| 6976547 | Actuator underreamer An underreamer for forming a cavity from within a well bore includes a housing adapted to be disposed within the well bore. The underreamer includes an actuator partially slidably positioned in the housing. The actuator comprises a first portion and a second portion... | 12/20/2005 |
| 6964298 | Method and system for accessing subterranean deposits from the surface An improved method and system for accessing subterranean deposits from the surface substantially eliminates or reduces the disadvantages and problems associated with previous systems and methods. In particular, the present invention provides an articulated well with... | 11/15/2005 |
| 6964308 | Method of drilling lateral wellbores from a slant well without utilizing a whipstock In accordance with one embodiment of the present invention, a method for drilling a lateral wellbore from a slant well includes drilling the slant well below the surface of the earth such that the slant well is angled toward a first horizontal direction that coincid... | 11/15/2005 |
| 6962216 | Wedge activated underreamer An underreamer for forming a cavity from within a well bore includes a housing adapted to be disposed within the well bore. The underreamer includes at least one cutter, wherein each cutter has a first end and a second end. The first end of each cutter is pivotally ... | 11/08/2005 |
| 6942030 | Three-dimensional well system for accessing subterranean zones A method for accessing a plurality of subterranean zones from the surface includes forming an entry well from the surface and forming two or more exterior drainage wells from the entry well through the subterranean zones. The exterior drainage wells each extend outw... | 09/13/2005 |
| 6871712 | Remote control for a drilling machine A method and apparatus for remotely controlling a machine. A remote operator controls a tracking device including a signal system for selectively emitting a remote enable signal. The remote enable signal is relayed to a control system for the machine. The control sy... | 03/29/2005 |
| 6012536 | Method for steering a ground-drilling machine The invention pertains to a method for steering a ground drilling machine, in particular, a pipe string assembly with a drilling head which is driven in the ground in rotative, propulsive and, if so desired, percussive fashion, in which at least one defle... | 01/11/2000 |
| 5360075 | Steering drill bit while drilling a bore hole A conventional drilling system using continuous coiled tubing connected to a reel at its upper end and connected to a drilling tool at its lower end is steered by rotating the injector at the well head which drives the tubing into the well about an axis l... | 11/01/1994 |
| 5355966 | Drilling method and an assembly for performing the method The invention provides a drilling method for drilling a bore-hole in ground or soil, with a percussion drilling device operated directly in the bore-hole and with a rotary percussion drilling device operated from the surface of the ground or soil, both de... | 10/18/1994 |
| 4971157 | Apparatus for the removal of spoil when making trenches of great depth Apparatus including a rotary drilling cutter and a spoil removal conduit for the digging of a deep trench, characterized in that the spoil removal conduit is gradually adjustable in length during excavation and comprises: (a) a first conduit section, arra... | 11/20/1990 |
| 4971162 | Continuous drill feed apparatus A continuous feed system for a drill comprising a down-hole drill assembly having a support end and a drilling bit. Rotation is imported to the down-hole drill assembly between the support end and the drilling bit, which results in a torque being applied ... | 11/20/1990 |
| 4923134 | Self-propelled subsoil penetrating tool system A means and method to pre-tension a cable or components thereof which provides an auxiliary reel mounted upon the primary cable reel, which auxiliary reel can be rotated independently of said primary cable reel and also rotated with said primary cable ree... | 05/08/1990 |
| 4775017 | Drilling using downhole drilling tools A downhole motor (19) is mounted in a drill pipe (13) above a hole enlarger (14) intermediate ends of the pipe (13). The motor drives a lower pilot bit (28). A split flow bypass device (24) above the motor (19) allows part of the flow to drive the motor a... | 10/04/1988 |
| 4434862 | Downhole turbine rotary drilling device This invention relates to a downhole rotary drilling device. More particularly, it relates to a gas operated turbine motor designed to be located downhole adjacent a rotary drilling bit to impart rotational force to the drilling bit and thus accomplish su... | 03/06/1984 |
| 4401170 | Apparatus for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein A directional drill attached to a drill string having periodic concentric collars is advanced in an inverted arcuate path to form a pilot hole underneath an obstacle followed by a larger concentric washover pipe. When the washover pipe reaches the surface... | 08/30/1983 |
| 4317493 | Kelly drive bushing adapter An adapter is provided for positioning a kelly drive bushing of a surface drilling assembly in spaced relationship to an associated rotary table. The adapter permits the wireline of an electronic steering assembly to pass through the central aperture in t... | 03/02/1982 |
| 4296821 | Drilling rig and conversion apparatus An improved drilling rig (10) and conversion apparatus for drilling rigs is disclosed. The rig includes a percussion assembly (32) rotatably mounted to a ram (30) above the ground in which drilling is to be made. The rig (10) includes a conversion mandrel... | 10/27/1981 |
| 4295533 | Pneumatically operated ram borer A self-driven pneumatically operated ram borer for boring holes in the ground includes a casing containing a percussion piston and a control sleeve for controlling the supply of compressed air through a hose to cause the piston to reciprocate, is provided... | 10/20/1981 |
| 4278136 | Sinkerdrill A down-the-hole rock drill including a drill bit provided at the lower end of a drill rod, which is rotatably driven by an above-the-ground motor. To increase the drilling efficiency and facilitate drilling of large-diameter holes a machine casing is posi... | 07/14/1981 |
| 4258802 | Downhole drilling system A downhole drilling system utilizes a non-rotating kelly bushing for locking in the torque created in the drill string by the downhole drilling motor. The kelly bushing prevents rotational movement of the kelly secured to the drill string on which the dow... | 03/31/1981 |
