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| Number | Title | Issue Date |
| 7121356 | Tools and methods for retrieving buried coins and other treasure A “sod saver” tool for digging to acquire an object buried in the ground, and a non-metallic scraping tool utilized when carefully examining the soil. The sod saver tool includes a main cylindrical body rotated about its longitudinal axis for digging a substanti... | 10/17/2006 |
| 6695078 | Large diameter sampler for gathering an undisturbed sample A cutting apparatus for use in a sampler is disclosed. The cutting apparatus includes an extension tube having a round unit on a bottom side of the extension tube; a cutting ring located in a bottom portion of a protecting tube; a guide tube which is inte... | 02/24/2004 |
| 6681872 | In situ reactor An in situ reactor for use in a geological strata, is described and which includes a liner defining a centrally disposed passageway and which is placed in a borehole formed in the geological strata; and a sampling conduit is received within the passageway... | 01/27/2004 |
| 6659204 | Method and apparatus for recovering core samples under pressure A pressure and temperature core sampler comprises a tool for recovering cores specifically enabling the evaluation of methane hydrate resources. Because methane hydrate tends to decompose under conditions of pressure decrease and/or temperature increase a... | 12/09/2003 |
| 6230825 | Apparatus for recovering core samples under pressure A pressure and temperature core sampler comprises a tool for recovering cores specifically enabling the evaluation of methane hydrate resources. Because methane hydrate tends to decompose under conditions of pressure decrease and/or temperature increase a... | 05/15/2001 |
| 5601152 | Vibrator core drilling apparatus A drilling tool, for example a core barrel inner tube assembly, includes a latch body mounting latches for movement into a latch seat to removably retain the assembly adjacent to a drill string bit end and to impart rotary movement to the latch body as th... | 02/11/1997 |
| 5474140 | Soil sampling probe The present invention is a soil sampling probe where a conical piston is kept at the opening to the sampling container by a first threaded portion near the top of the piston rod which engages a threaded opening near the top end of the container. With the ... | 12/12/1995 |
| 5211715 | Coring with tubing run tools from a producing well Core samples are obtained through production wells by inserting a milling tool through the production tubing string on the distal end of coilable tubing to mill out a window in the well casing. The milling tool is deflected by a whipstock set in the casin... | 05/18/1993 |
| 5188190 | Method for obtaining cores from a producing well Core samples are obtained through production wells by inserting a milling tool through the production tubing string on the distal end of coilable tubing to mill out a window in the well casing. The milling tool is deflected by a whipstock set in the casin... | 02/23/1993 |
| 5052502 | Apparatus for directional coring The present invention comprises a novel method and apparatus for sinking drill holes in underground rock formations while generating drill cores as rock samples. More particularly, the present invention discloses a method and apparatus which allows for an... | 10/01/1991 |
| 4878549 | Wire line core barrel A core sampling device comprising a drill bit assembly, a drive shoe arranged to house the drill bit, a core sampling tube and a retraction tube. The drill bit assembly includes a bit housing, which is drivingly engaged by the drive shoe, and a series of ... | 11/07/1989 |
| 4825963 | High-pressure waterjet/abrasive particle-jet coring method and apparatus A simple low-cost and highly passive bitless nonrotational nondeviating jam-proof thin-kerf Newtonian hydraulics retrievable core-sampling method and apparatus that advances its circular core kerf through the rock by a combination of high-pressure droplet... | 05/02/1989 |
| 4679636 | Method and apparatus for coring rock A low-cost retrievable light-weight high-speed thin-kerf reversible electrically-driven core-sampling method and apparatus that is independent of the weight of any drill pipe, drill collars, or any other heavy cylindrical or tubular conduit associated wit... | 07/14/1987 |
| 4558749 | Anti-jamming core barrels An improved anti-jamming mechanism for use in a coring tool is devised by providing a rotary jar within the inner barrel of the coring tool. The inner barrel is connected to a bearing assembly into which a bearing shaft is axially and concentrically dispo... | 12/17/1985 |
| 4002213 | Down-the-hole motor for rotary drill rod and process for drilling using the same The disclosure includes additional features of the apparatus and technique disclosed in Applicant's U.S. application Ser. No. 575,429. For example, in one embodiment, the motor is adapted to drive a rotary drill rod of the type mentioned in the foregoing ... | 01/11/1977 |
