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7027968 |
A method of simulating subsea mudlift drilling well control operations using a computer system. The method includes simulating a drilling circulation system. The simulation includes simulating drilling the wellbore at a selected rate of ...
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6941804 |
A method of determining an in situ PVT property of a hydrocarbon reservoir fluid that is present in a hydrocarbon-bearing formation layer traversed by a borehole, which method involves the steps of:
a) calculating along the hydroc...
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6938503 |
A suction lysimeter for sampling subsurface liquids includes a lysimeter casing having a drive portion, a reservoir portion, and a tip portion, the tip portion including a membrane through which subsurface liquids may be sampled; a fluid...
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6401840 |
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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5785131 |
A borehole drilling apparatus has a jacket attachable to a well head and through which a drill rod passes and which carries pressurized drilling fluid to a working end of the drill rod and out into an annulus of the borehole. The jacket ...
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5469917 |
A method for monitoring oil-drilling mud. A supported capillary membrane (SCMS) device having a support member, a capillary membrane permeable to hydrocarbons, and flights on the surface of the support member within which the capillary m...
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4825963 |
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 hig...
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4659257 |
A method and a hollow body for forming a hole in the ground are disclosed. After the hollow body has been brought to the desired depth in the ground high pressure fluid is jetted through spray nozzles into the hollow body near the lower ...
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4168755 |
A nutating earth drilling bit which is adapted for use in drilling systems in which the drilling fluid and cuttings are transported from bit to surface through the interior of the drill string. The nutating bit is provided with a toroida...
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4100981 |
Apparatus for concentric multi-string drilling with reverse air vacuum for the entrainment of chips and dust, selectively controlled through a plurality of annuli defined by the multiplicity of drill strings adapted to individually and/o...
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4098698 |
The present invention relates to a system for automatically recovering the entirety of the excavated materials in the order in which they are raised to the surface. The excavated materials being delivered through the central passage of a...
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4098361 |
The invention relates to a drilling head connection specifically designed for reverse circulation operation and the connection can be screwed on a double pipe system in such a way that the drilling fluid injected into the annular space p...
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4066138 |
Earth boring apparatus is mounted above ground and directs an annulus of high powered laser energy downwardly for boring a cylindrical hole by fusing successive annular regions of the stratum to be penetrated at a power level that shatte...
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4031973 |
This invention relates to placer mining and more particularly to a novel bit adapted for use in stream beds, dependably to break up and deliver to and through a sluice box a quantity of divided, water-borne gravel, sand, clay and ore for...
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3991838 |
A self-centralizing sealed diverter for aiding the surface collection of underground samples including a rigid casing driven into the ground to line a partially drilled hole, a rigid chamber mounted above and firmly but removably attache...
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3981371 |
A core sampling drill comprising a drill bit having a series of cutting surfaces arranged around a central core hole, the upper end of the drill bit being threaded so that it can be fitted to the lower end of a tubular drill stem, a core...
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3968845 |
Apparatus and method for complete reverse air vacuum drilling by entrainment of chips and dust in a high velocity air stream created by applying a vacuum to the drill stem or the annulus of a drilled hole, removing the drilled particles ...
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3941196 |
An airhammer and core bit apparatus including a housing and a hammer piston reciprocable in the housing for delivering repeated impact blows to an anvil secured to or forming part of a core bit which produces a core in a bore hole being ...
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3920090 |
A drill system uses double walled concentric pipe and a drill bit attached at one end of the drill pipe and a power swivel at its upper end having means for applying compressed air to the outer annulus within the drill pipe and means for...
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3917326 |
Metallic particles are recovered from a sub-surface formation by: A. producing a flow of liquid in the sub-surface formation extending between spaced sub-surface localities, and sufficient to displace metallic particles from within the f...
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3887020 |
Apparatus and method for complete reverse air vacuum drilling by entrainment of chips and dust in a high velocity air stream created by applying a vacuum to the drill stem or the annulus of a drilled hole, removing the drilled particles ...
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3871486 |
Continuous drilling of a well bore and coring involves the use of a rotatable percussion drill having a central core barrel, the drill being operated by air circulated through a dual concentric drill pipe and a swivel at the top of the d...
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3861478 |
Crushing device using the hydraulic power of highpressure jets, comprising hydraulic crushing chamber surrounded by an annular closure, high pressure jets being sprayed into that chamber, crushing the substances brought into that chamber...
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3853189 |
Disclosed is a ball crushing apparatus for use in connection with an earth drilling tool characterized in that it is made up of a crushing chamber in communication both with a high-pressure fluid source and a lower-pressure space; the co...
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3830319 |
A rotary drilling apparatus in which drilled cores are continuously transported to the surface by means of a flushing fluid. The apparatus comprises a rotatable inner pipe or pipe string provided near its bottom end with a cutting member...
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3811518 |
An arrangement for collecting a representative sample of all of the cuttings formed by drilling a hole in the earth regardless of whether the hole is wet or dry. The hole is formed by a drilling mechanism that leaves an annulus between t...
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3807514 |
A sample drilling apparatus comprising an above ground unit and a drilling tube assembly which in operation is rotated about its longitudinal axis and advanced axially into the ground to be sampled by said above ground unit, said drillin...
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3786878 |
A dual concentric drillstring assembly for use with rotary drilling apparatus and a downhole percussion motor in which the inner and outer pipes of each stand of drillpipe are rigidly secured together by full-length welded webs for minim...
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3701387 |
Apparatus for taking a plurality of sequential punch core samples in underwater sediments is provided. Core sampling tubes are driven into the sediments by hydraulic pressure acting through a central guide tube. The core sampling tube is...
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3667555 |
Method and apparatus for drilling and for obtaining uncontaminated formation samples with an air hammer by flowing compressed air down through the tubing annulus of a dual pupe string to a novel sub, where the flow divides to enable part...
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3599732 |
A method and a device for providing a hole in the soil, for example for forming a foundation element, an earth-retaining wall or a water-retaining wall or the like in the soil, wherein a hollow pipe open at the lower end is introduced in...
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3596723 |
Apparatus for retrieving cores while drilling a borehole which enables an elongated cylindrical solid core sample to be obtained from a formation. A coring bit together with a core barrel which remains stationary with respect to the core...
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3583502 |
A downhole axial flow turbine to rotate the drilling bit in earth boring, the turbine actuated by drilling fluid flow. The turbine operates in conjunction with dual-tube drill pipe. The drilling fluid flows downward in the annulus of the...
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3578093 |
A method of drilling bore holes which enables a cylindrical solid core sample to be obtained from a formation. A coring bit together with a core barrel and concentrically arranged drill pipe provides central and annular passageways. The ...
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3543870 |
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3490550 |
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3486570 |
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3473617 |
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3424255 |
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3422912 |
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3419092 |
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3338322 |
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3291229 |
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3208539 |
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3205353 |
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3155179 |
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3086602 |
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3078931 |
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3019839 |
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2990897 |
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