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7404455 |
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...
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7296638 |
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 incl...
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6908262 |
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...
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6732818 |
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...
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6659196 |
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 e...
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6386026 |
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. T...
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6241029 |
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 ...
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6006844 |
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 dis...
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5957221 |
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 asse...
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5445228 |
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 oute...
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5310013 |
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 r...
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5105894 |
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 ort...
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4955438 |
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 l...
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4883131 |
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 lon...
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4860836 |
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 s...
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4765414 |
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 inn...
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4750570 |
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 s...
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4664204 |
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 b...
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4311201 |
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 pendu...
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4207925 |
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 ...
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4141153 |
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...
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4128134 |
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...
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3964555 |
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 ...
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3450216 |
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3363703 |
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3324563 |
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3291226 |
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3241623 |
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3209823 |
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3207240 |
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3207239 |
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3183983 |
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3148740 |
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3115196 |
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3088528 |
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3059707 |
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3032127 |
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2974739 |
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2859938 |
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2822147 |
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2820610 |
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2810548 |
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2735652 |
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2710169 |
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2709069 |
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2707617 |
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2670179 |
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2657013 |
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2650069 |
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2650068 |
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