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| Number | Title | Issue Date |
| 7392719 | Devices and methods for sampling groundwater Some embodiments of the present invention are related to devices and methods for sampling groundwater at multiple target depths, wherein each of the devices for sampling groundwater at multiple target depths comprises: a hammer part having a spring for generating in... | 07/01/2008 |
| 7255182 | Ground drilling tool A back bit (20) is disclosed which is to used in conjunction with drilling equipment (10) which may include a derrick (11), a drilling pipe (12), a back head (14), a starting rod (13), and a cutting bit (15) mounted t... | 08/14/2007 |
| 7234538 | Method for sinking a borehole in the ground and wet boring tool The invention relates to a method for sinking a borehole in the ground, in which a wet boring tool with a removal area for producing or advancing a borehole is used, the borehole is at least partly filled with a fluid and in the borehole is formed a filling area and... | 06/26/2007 |
| 7174957 | Magnetic bailer A bailer is configured to remove particulate solids from fluid passing through the bailer. The bailer preferably includes a housing that includes an intake and an outlet to permit the flow if well fluids through the housing. The bailer also includes a magnetic plate... | 02/13/2007 |
| 7124819 | Downhole fluid pumping apparatus and method A downhole fluid pump including a pump chamber, and a piston disposed in the pump chamber so that the piston will move in one selected from a charge stroke and a discharge stroke when the piston is exposed to a differential pressure. The downhole fluid pump may form... | 10/24/2006 |
| 7040416 | T-post hole-forming device and use for installing a T-post The invention provides a T-post hole-forming device, comprising (a) a shaft; (b) a head for receiving a driving force at the top of said shaft; (c) a flat plate affixed to one side of said shaft, the shaft terminating in a pointed end for piercing the ground. Also p... | 05/09/2006 |
| 7032692 | Drilling device for earth drill Locking elements 3d and 3j are provided at an inner member 3 connected to a kelly bar 1, and a locking element bearing plate 6f is provided at an outer member 6. The outer member 6 includes a cyli... | 04/25/2006 |
| 6968910 | Ultrasonic/sonic mechanism of deep drilling (USMOD) The present invention provides an ultrasonic and sonic mechanism of deep drilling (USMOD) that is driven by a vibrating actuator and operates in a similar manner to the gopher with regards to drilling debris removal. The actuator induces vibration in the form of a h... | 11/29/2005 |
| 6951251 | Junk basket and method Junk basket 10 is provided for collecting debris from a wellbore cleaning operation, and includes a central mandrel 14 having a throughbore 16 and an outer shell 24 defining a generally annular junk space 40. The outer shell 24 | 10/04/2005 |
| 6739412 | Pile boring tools A boring apparatus is described which comprises a substantially hollow vessel with a fixed base and a rotatable base. The rotatable base is provided, at its circumference, with at least one side cutter which rotatable with the rotatable base from a first position, i... | 05/25/2004 |
| 6612377 | Scraper tool An excavation cleaning tool or dredge is provided which rotates and scrapes together and captures the loose soil, sand and gravel debris at the bottom of the hole to provide a clean, flat-bottomed hole which is free of compressible excavation waste materi... | 09/02/2003 |
| 5431238 | Drilling tool for use in constructing large diameter piles, ventilating shafts and other similar mining works A drilling tool is adapted for being releasably mounted to a lower end of a rod string (20) of a drilling rig (30) and includes a container (2) having a cylindrical or truncated-cone shape fitted at the lower end with a plurality of cutting tools or cutte... | 07/11/1995 |
| 5139089 | Well cleanout tool and method A cleanout tool for removing debris from a deep borehole, the borehole being characterized by having a relatively low hydrostatic head or level of liquid in the borehole. A series of unique check valves acting in cooperation with a pumping section are use... | 08/18/1992 |
| 5135050 | Device for collecting particulate matter and debris in horizontal or high-deviation oil or gas wells Device for collecting particulate matter and debris in horizontal or highly-deviated oil or gas wells, comprising a cylindrical housing (10) enclosing a collecting chamber having at least one radial port (7A, B) at a distance from an inner end (5) of said... | 08/04/1992 |
| 4685339 | Soil sample taker and vehicle mounting arrangement A soil sampler to be mounted on a vehicle such as a pick-up truck, has a frame for mounting on the vehicle and a vertical hydraulic cylinder connected at its upper end to the frame. A sample taking probe is connected to the rod of the cylinder which drive... | 08/11/1987 |
| 4526242 | Drilling device A drilling device which can be lowered in a drill hole consists of a drive device, a drill which is rotated by this drive device and a clamping device formed as a unit which can be engaged with the inside wall of the drill hole and serves to transfer the ... | 07/02/1985 |
| 4505341 | Combination clean-out and drilling tool A tool (10) is disclosed which permits retrieval of an object (201) from within a bore hole having debris (210) surrounding the object. The tool (10) includes an upper assembly (12) and a lower assembly (14). The upper assembly (12) is secured to a drill ... | 03/19/1985 |
| 4421182 | Combination clean-out and drilling tool A tool (10) is disclosed which permits clean-out of a bore hole in either a hydrostatic or hydraulic operation. In addition, the tool (10) may be used to drill a formation within the bore hole without the need for circulation of fluid to the surface to re... | 12/20/1983 |
| 4296823 | Cable tool with circulating drill stem A cable tool (10) includes a tool bit (12), a drill stem (14) and an adapter (16). Openings (32) are formed in a cutting face (18) of the tool bit (12) and inclined bores (34) extend upwardly within the tool bit (12) to an upwardly extending bit passagewa... | 10/27/1981 |
| 4217966 | Junk basket, bit and reamer stabilizer A metal cup with an apertured bottom provides a junk basket. The cup is spindled on the pin of a drill bit, e.g. a tungsten carbide insert roller cone bit, the bottom edge being releasably clamped between the pin shoulder and the shoulder formed by the mo... | 08/19/1980 |
| 4117896 | Soil sampler In abstract, a preferred embodiment of this invention is a soil sampler having a specially designed tip for easy penetration, a movable slot cleaner for cutting away surface soil that clings as the sample is taken, and depth markings for allowing accurate... | 10/03/1978 |
| 4111262 | Junk boot A tubular, flexible rubber-like junk boot is positioned on the lower end of a drill string, blade-type stabilizer to catch small but dense particles of debris which are not removed from the hole by the drilling fluid. The boot has means on its lower end f... | 09/05/1978 |
| 4099584 | Flame jet tool for drilling to great depths A flame jet tool for drilling a hole in the ground at great depths is disclosed. The tool comprises a flame jet lance having a drill bit and an associated fuel system. The lance is disposed in a guide sheath such that the lance may be raised and lowered t... | 07/11/1978 |
| 4004643 | Mechanical drilling jar The specification describes a drilling jar for connection in a rotary drill string. There is a trap space in the jar for collecting the products of wear between its moving parts. The drilling jar includes a generally tubular housing assembly, which has ne... | 01/25/1977 |
