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| Number | Title | Issue Date |
| 7789170 | Sidewall coring tool and method for marking a sidewall core A sidewall coring tool includes a tool housing, a coring assembly coupled and a marking device. The defines a longitudinal axis and is adapted for suspension within the borehole at a selected depth. The coring assembly is coupled to the tool housing and includes a b... | 09/07/2010 |
| 7665542 | Core barrel capacity gauge and method A core barrel capacity gauge for use on a core barrel assembly having a barrel for receiving a core sample. The core barrel capacity gauge includes a core sample marker located within the barrel such that the core sample marker rests against the top of the drilled c... | 02/23/2010 |
| 7404455 | Automatic SPT monitor An apparatus is used with an impact hammer penetration assemble such as standard penetration test (SPT) in geotechnical engineering. The impact hammer penetration assembly comprises a penetration sample, a series of rods coupled together and an impact hammer apparat... | 07/29/2008 |
| 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 |
| 7216737 | Acoustic isolator between downhole transmitters and receivers Apparatus and methods for acoustically isolating logging tool receiver and transmitter sections. One or more modular isolators is arranged between the receiver and transmitter sections. The modular isolators comprise a high tensile strength while also providing for ... | 05/15/2007 |
| 7210342 | Method and apparatus for determining gas content of subsurface fluids for oil and gas exploration A process to analyze fluid entrained in well boreholes. The process includes gathering trap gas samples from return of drilling mud at multiple depths. The process also includes the steps of subjecting the samples to mass spectrometry in order to determine mass to c... | 05/01/2007 |
| 7204308 | Borehole marking devices and methods To reduce the surveying error in a wellbore, the creation of several reference points within a borehole is carried out by physically placing borehole markers in the borehole casing, the borehole wall or in the formation itself, and providing an accurate reference of... | 04/17/2007 |
| 7204324 | Rotating systems associated with drill pipe Methods and apparatuses for drilling a borehole are disclosed. An electric motor electrically and mechanically coupled to a wired drill pipe is provided. The electric motor couples to a shaft that rotates when power is supplied to the electric motor. The shaft is co... | 04/17/2007 |
| 7168508 | Logging-while-coring method and apparatus A method and apparatus for downhole coring while receiving logging-while-drilling tool data. The apparatus includes core collar and a retrievable core barrel. The retrievable core barrel receives core from a borehole which is sent to the surface for analysis via wir... | 01/30/2007 |
| 7147065 | Connection design and sonde housing assembly for a directional drill Drill stem elements and connections are shown with advantages such as being mechanically robust. The absence of a side access window in a sonde housing is one design feature that provides robust mechanical properties. Further advantages of sonde housings include bei... | 12/12/2006 |
| 7025153 | Method for handling, processing and disposing of drill cuttings A method and apparatus for handling, processing and disposing the drill cuttings removed from the drilling mud of oil and gas well drilling rigs is disclosed. The apparatus and method utilize a shaker for separating drill cuttings from the mud, conduit for transport... | 04/11/2006 |
| 6908262 | Systems and methods for driving large diameter caissons A system for driving a large diameter caisson into the ground, comprising a crane assembly, a plurality of vibratory devices, a clamp assembly, a suspension assembly, and a timing system. Each vibratory device generates a vibratory force. The clamp assembly rigidly ... | 06/21/2005 |
| 6732818 | Oriented core barrel system A device for preserving the orientation of a core is described. A core barrel is attached to a rotatable orienting rod. A plurality of projections are located on an inner surface of the core barrel. Three projections are grouped together and opposite from a fourth p... | 05/11/2004 |
| 6659196 | Core orientation An upper end (10) for the inner tube of a core drill has a marking device comprising a pendulum (350) or hard ball (30) which runs in a circumferential track (24). The marking device adapted to be carried within a tubular upper end casing (12) which surro... | 12/09/2003 |
| 6386026 | Cuttings sample catcher and method of use A sample catcher comprises an inclined sampling screw conveyor which intercepts a continuous stream of drill cuttings from a shaker. A vaned metering rotor accepts a plurality of discrete samples from adjacent the conveyor's discharge. The vaned rotor is ... | 05/14/2002 |
| 6241029 | Earth formation surveying device A survey device for use in a borehole formed in an earth formation. The device includes a carrier body carrying earth formation survey apparatus and drilling device arranged at the front end of the device for drilling of the borehole, a device for progres... | 06/05/2001 |
| 6006844 | Method and apparatus for simultaneous coring and formation evaluation A core barrel having an inner tube for coring and, alternately, a center plug assembly for closing the throat of the core bit at the bottom of the assembly for drilling in lieu of coring. The inner tube assembly and plug assembly are disposable and retrie... | 12/28/1999 |
| 5957221 | Downhole core sampling and testing apparatus A coring apparatus permitting the taking of a non-rotating core sample and testing of same, as by NMR, prior to breakage and ejection from the apparatus. A core barrel is suspended from a rotating outer sleeve by one or more bearing assemblies which permi... | 09/28/1999 |
| 5445228 | Method and apparatus for formation sampling during the drilling of a hydrocarbon well A tool for obtaining samples of the formation surrounding the wellbore, and method of obtaining such samples, is disclosed. The tool is implemented within a sub in a bottomhole assembly, preferably within side-pocket mandrels in the outer surface of drill... | 08/29/1995 |
| 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 |
| 5105894 | Method and apparatus for orientating core sample and plug removed from sidewall of a borehole relative to a well and formations penetrated by the borehole A method and apparatus for determining the location in space of a formation sample is set forth. This involves a tool which is typically run on a wireline in a well, the tool supporting orthogonal positioned magnetometers and similar orthogonal accelerome... | 04/21/1992 |
| 4955438 | Core drilling tool A core drilling tool for drilling rock in underground soil formations which includes an outside pipe and an inside pipe therein that can be conveyed separately to the surface. The inside pipe includes a core-receiving receptacle at its lower end, and at i... | 09/11/1990 |
| 4883131 | Core orientation system A core orientation device for determining the in situ orientation of core samples taken during a drilling process. A sampling tube having a plurality of equispaced slots formed longitudinally on its sidewall permits the scribing of a longitudinal line on ... | 11/28/1989 |
| 4860836 | Method and apparatus for indicating sample collection times during well drilling A system for eliminating the need for one or more mud loggers on a drilling rig keeps track of the travel of drilling mud injected into the bottom of the well as it moves to the surface of the well with entrapped drill cuttings and gas so that for mud rea... | 08/29/1989 |
| 4765414 | Corebarrel A corebarrel for use downhole and having an outer tube and an inner tube which are relatively rotatable and interconnected through a bearing assembly, and a solid state survey device for use in oriented coring and disposed within the inner tube below the ... | 08/23/1988 |
| 4750570 | Formation sampling bullet and cables therefor Sampling bullets of the type which are fired into rock formation surrounding a wellbore. The core sampling bullet includes an internal core barrel which is defined in part by a core receiving sleeve releasably secured within the bullet structure. Followin... | 06/14/1988 |
| 4664204 | Fixing mechanism for a wireline core barrel of core drilling equipment Wireline core barrel fixing mechanism incorporating a fixer which prevents any wireline core barrel deformations, fixes the wireline core barrel to the hollow drill bit, and signals any drilling process interruptions. The wireline core barrel fixer compri... | 05/12/1987 |
| 4311201 | Core sample orientation tool A core sample orientation tool for coupling to push rods or wire lines for use in obtaining core impressions in bore holes. The tool includes a putty cup and mark receiving surface which are removably attached to a sleeve housing a pendulum-oriented marke... | 01/19/1982 |
| 4207925 | Reversible baffle plate A reversible baffle plate for receiving and supporting a bottom hole survey apparatus on the interior of a directional drilling string is characterized by concentrically disposed inner and outer members supported one from the other by a plurality of webs.... | 06/17/1980 |
| 4141153 | Bottom hole survey apparatus A bottom hole survey apparatus is characterized by a survey instrument having a reference line therein, the instrument being receivable by the engagement of flanges provided along the instrument into keyways provided on the interior of a non-magnetic inst... | 02/27/1979 |
| 4128134 | Method and apparatus for determining the orientation of a core cut in a bore hole Method and apparatus for cutting a core in a bore hole and means of marking the core in which a groove is cut into the core along its length and providing an external arm in a definite angular relation to the core marking means and which may be aimed at s... | 12/05/1978 |
| 3964555 | Apparatus for obtaining earth cores An apparatus for obtaining earth samples of soil or rock from the bottom of holes previously drilled in the earth, the apparatus having an outer and inner non-rotatable casing and a rotatable intermediate casing wherein the intermediate casing is provided... | 06/22/1976 |
