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| Number | Title | Issue Date |
| 8230950 | Multi-purpose scoop A multi-purpose scoop consisting of a body attached to a handle. A neck may be positioned between the body and handle. On the handle is a vent which is covered to permit suction. Passing through the center of the handle and down into the body is a rod. At the bottom... | 07/31/2012 |
| 7967085 | Braking devices for use in drilling operations A braking device for drilling operations in a borehole includes a brake retainer having a plurality of brake connector openings defined therein, a body member having a tapered surface having a first diameter and a second diameter, the second diameter being larger th... | 06/28/2011 |
| 7380614 | Remotely operated water bottom based drilling system using cable for auxiliary operations A method for drilling formations below the bottom of a body of water includes disposing a drilling system on the bottom of the body of water. The formations are drilled by rotating a first drill rod having a first core barrel latched therein and advancing the drill ... | 06/03/2008 |
| 7314101 | Inner core barrel head assembly for core tube within a drill string Inner core barrel head assembly (10) includes an upper latch body (24), a plurality of latching balls (26) which are retained in the latch body (24) and a locking sleeve (28) disposed within the latch body (24). The sleeve (... | 01/01/2008 |
| 7296638 | Orientation device for a core sample Core orientator for a core drill includes a face orientator and a bottom orientator supported by a shaft which extends into a shroud. A tubular extension is coupled to the shroud and is slidably coupled to a main body. The main body includes first and second latches... | 11/20/2007 |
| 7234547 | Apparatus and methods for sponge coring A sponge core barrel for use in performing sponge coring and methods of assembling the sponge core barrel, as well as methods of performing sponge coring. The sponge core barrel includes an outer barrel assembly, a core bit secured to a lower end thereof, and an inn... | 06/26/2007 |
| 7231991 | Apparatus and methods for sponge coring A sponge core barrel is disclosed for use in performing sponge coring and methods of assembling the sponge core barrel, as well as methods of performing sponge coring. The sponge core barrel includes an outer barrel assembly, a core bit secured to a lower end thereo... | 06/19/2007 |
| 7219753 | Tool holder for annular core bit A tool holder (1) for an annular core bit has a bit-side axial stop surface (4) and an end-side axial splined profile (3) extending in a bit direction. The tool holder has an outer thread (5) forming radial spline projections of the splin... | 05/22/2007 |
| 7182155 | Locking split barrel sampler and soil sampling system Once the core barrel has been inserted into the ground to the appropriate depth for the required soil sample, it may be withdrawn by removing the entire drill string. Once withdrawn, the soil sample may be obtained by unscrewing the adapter coupling 12 and drive sho... | 02/27/2007 |
| 7093676 | Apparatus and methods for sponge coring A sponge core barrel for use in performing sponge coring and methods of assembling the sponge core barrel, as well as methods of performing sponge coring. The sponge core barrel includes an outer barrel assembly, a core bit secured to a lower end thereof, and an inn... | 08/22/2006 |
| 7073797 | Tool holder for annular core bit A tool holder (1) and a shank (8) for quick mounting and dismounting an annular core bit (2) both include cooperating respective guide members (4, 4′) provided at their bit-side ends, flanges (3, 9) arranged coaxially with the gu... | 07/11/2006 |
| 7055626 | Core bit having features for controlling flow split A core bit for cutting core samples in subterranean formations. The core bit has interior geometric features configured to control the quantity of drilling fluid, or flow split, flowing into a narrow annulus defined by an inside diameter of the core bit and an outsi... | 06/06/2006 |
| 7021404 | Method and device for deviated coring and/or drilling The invention concerns a method and a device for coring and/or drilling through a wall of a bore hole, to deflect transversely from a longitudinal direction of the hole, further comprising selecting a core barrel (1) equipped with a core bit (3) having... | 04/04/2006 |
| 7004265 | Apparatus and methods for sponge coring A sponge core barrel for use in performing sponge coring and methods of assembling the sponge core barrel, as well as methods of performing sponge coring. The sponge core barrel includes an outer barrel assembly, a core bit secured to a lower end thereof, and an inn... | 02/28/2006 |
| 6997493 | Lockable overshot Lockable overshot (10) includes an elongated body (12), lifting dogs (14a, 14b) and a locking sleeve (16). Ends (18) of the lifting dogs (14) are configured for latching a conventional spearhead point th... | 02/14/2006 |
| 6736224 | Drilling system and method suitable for coring and other purposes A wellbore assembly is provided that is operable in wellbores in the range of six to six and one-half inches for obtaining large diameter cores, e.g., cores greater than or equal to two and seven-eighths inches in diameter. The wellbore assembly may preferably be ut... | 05/18/2004 |
| 6708784 | Core barrel valve assembly The present invention relates to a method for a valve, which valve comprises a movable valve body (6) having a first side (9) facing a means for supplying pressurized fluid and influenced in the supply direction by a force from said fluid, and a second... | 03/23/2004 |
| 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 |
| 6659195 | Externally vented drive head with solid center A drive head for supporting a soil sampling tube in a drive assembly in which the head and tube are driven into the ground by a power source connected to the head or to at least one drive rod connected to the head. The drive head has a body portion in the... | 12/09/2003 |
| 6457538 | Advanced coring apparatus and method A system of apparatus for use in a coring tool measures the height of a core sample being recovered and transmits data relative thereto to the surface of a formation concurrently during the coring operation. A transmitter of an electromagnetic ranging sys... | 10/01/2002 |
| 6378631 | Apparatus for recovering core samples at in situ conditions 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... | 04/30/2002 |
| 6341656 | Core barrel The invention concerns a core barrel, in particular in the field of oil exploration, comprising at least an outer tube (2) and a core bit (3) forming an outer assembly (4) and at least an inner tube (5) forming with a drilling core optionally present ther... | 01/29/2002 |
| 6305482 | Method and apparatus for transferring core sample from core retrieval chamber under pressure for transport 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... | 10/23/2001 |
| 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 |
| 5980168 | Hollow crown drill A crown drill including a hollow cylindrical carrier body, which is formed of two coaxially arranged tubes connected with each other, and a cutting member attached to the carrier body and projecting axially beyond the leading end of the carrier body.... | 11/09/1999 |
| 5670717 | Method and device for detecting and/or measuring at least one geophysical parameter from a core sample Method and device for detecting and/or measuring at least one geophysical parameter from a core sample (1), in particular in the oil sector, comprising, during an operation of core drilling with a sampler (2); arranging, substantially fixed relative to th... | 09/23/1997 |
| 5494119 | Core sampling device The obtaining of undisturbed core samples of subsurface soils for analysis and study is disclosed. Percussion-type downhole drilling equipment uses compressed air directed internally of a pipe casing to actuate a percussion-type piston adjacent the bottom... | 02/27/1996 |
| 5339915 | Drilling apparatus, particularly wire line core drilling apparatus This invention relates to a wire line core barrel inner tube assembly capable of travelling longitudinally within a drill string toward and away from a drill bit carried on the lower end of the string, the drill string having an annular landing shoulder t... | 08/23/1994 |
| 5310013 | Core marking system for a sidewall coring tool A system for reliably indexing and separating sidewall core samples obtained with a sidewall coring tool comprises markers made of a magnetic material and a mechanism body made of a combination of magnetic and non-magnetic materials to reliably insert and... | 05/10/1994 |
| 5209310 | Corebarrel A system is described which enables the safe release of formation gases when corebarrel is being raised. A corebarrel has an elongate cylindrical outer casing (1) and an elongate cylindrical liner (2), the liner (2) being disposed within the outer casing ... | 05/11/1993 |
| 5107942 | Inner tube stabilizer for a corebarrel A stabilizer bearing assembly is described for maintaining separation between a substantially nonrotating inner tube assembly and a rotating core barrel within which the inner tube assembly is disposed. The bearing assembly comprises a cylindrical tube ha... | 04/28/1992 |
| 5103921 | Coring assembly for mounting on the end of a drill string There is provided a new and useful coring assembly for mounting on the end of a drill string and comprising a core barrel; abrading means on at least a part of the core barrel; a reaming collar mounted about a lower section of the core barrel and selectab... | 04/14/1992 |
| 4981183 | Apparatus for taking core samples A coring apparatus which includes a drill bit and a receiving member. The drill bit includes discrete cutting elements for cutting the outer dimension of the core. The receiving member is adapted to lie proximate to the discrete cutting surfaces and to re... | 01/01/1991 |
| 4950844 | Method and apparatus for obtaining a core sample at ambient pressure For use with a core sample tool removing a sample from a formation of interest, a sonde supported sample receiving chamber is disclosed. It includes a main valve for sample insertion into a cavity in a resilient sleeve. The sleeve is in a chamber connecte... | 08/21/1990 |
| 4834198 | Positive latch wire line core barrel apparatus Core barrel apparatus that includes an inner tube assembly that may fall under gravity or be fluidly propelled through a drill string to the bit end thereof for being retained at the bit end by latches and being retractable by an overshot assembly. The in... | 05/30/1989 |
| 4809790 | Device for sampling soils and retaining volatiles therein and method of using same A device for extracting an undisturbed sample of soil to be tested from a subsurface location uses a cutter to remove unwanted soil from above the undisturbed sample. The device is particularly intended for extraction of soil from contaminated areas witho... | 03/07/1989 |
| 4735269 | Core monitoring device with pressurized inner barrel A well coring apparatus is provided with the capability for monitoring the length of the core in the inner barrel (32) of a core barrel (16) and the rate at which the core enters the inner barrel (32). The device includes a Sonic Core Monitor (78) which i... | 04/05/1988 |
| 4667753 | Core retainer for sidewall core tools A hollow truncated cone made from material with elastic properties which expands around a core being cut from the sidewall of a borehole drilled in the earth with a core cutting means rigidly connected to a core barrel. The hollow truncated core is held i... | 05/26/1987 |
| 4638872 | Core monitoring device A well coring apparatus is provided with the capability for monitoring the length of the core in the inner barrel (32) of a core barrel (16) and the rate at which the core enters the inner barrel (32). The device includes a Sonic Core Monitor (78) which i... | 01/27/1987 |
| 4625813 | Method and apparatus for coring in subaqueous structures Coring of a subaqueous structure having a significant water pressure head on one side is carried out through a full port valve assembly mounted on the inner or dry side of the structure. With the valve open, the barrel of a coring device is inserted, and ... | 12/02/1986 |
