|
Match
|
Document |
Document Title |
|
|
7586087 |
Methods and apparatus to characterize stock-tank oil during fluid composition analysis
Methods and apparatus to characterize stock-tank oil during fluid composition analysis are disclosed. A disclosed example method to characterize a fluid associated with an underground geological...
|
|
|
7526953 |
Methods and apparatus for the downhole characterization of formation fluids
Methods and apparatus for investigating a hydrocarbon bearing geological formation traversed by a borehole are disclosed. An example method to characterize a fluid associated with an underground...
|
|
|
7520519 |
Manually driven wheelchair
A wheelchair includes a standard foldable frame for supporting a seat with a first and second drive wheel driven by drive levers. Each wheel has a transmission providing for three forward speeds...
|
|
|
7439494 |
Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a borehole
Data acquired using a pulsed nuclear source are susceptible to two sources of error. One error is due to large statistical noise towards the end of an acquisition window. Another source of error is...
|
|
|
7312439 |
Radon progeny monitor
A new type of radon progeny monitor called an electret radon progeny integrating sampling unit (E-RPISU) using an electret ion chamber to measure radon progeny concentration. A conventional 1 LPM...
|
|
|
7173239 |
Method and apparatus for downhole quantification of methane using near infrared spectroscopy
The present invention describes a unique method and apparatus for applying near-infrared spectroscopy to estimate weight percent of methane in crude oil from which one can then infer gas-oil ratio...
|
|
|
7095012 |
Methods and apparatus for determining chemical composition of reservoir fluids
Methods of analyzing formation fluids in an oilfield environment are near-infrared absorption spectroscopy. Indications of near-infrared absorptions are analyzed to determine the concentration of...
|
|
|
7082185 |
Portable imaging system method and apparatus
An operator shielded X-ray imaging system has sufficiently low mass (less than 300 kg) and is compact enough to enable portability by reducing operator shielding requirements to a minimum shielded...
|
|
|
7081615 |
Methods and apparatus for the downhole characterization of formation fluids
Methods and apparatus for investigating a hydrocarbon bearing geological formation traversed by a borehole are disclosed. A borehole tool is used to acquire a sample of fluid in the formation....
|
|
|
7028773 |
Assessing downhole WBM-contaminated connate water
Water-based mud filtrate concentration in a downhole fluid sample drawn from the borehole of an oil well is assessed. To measure water-based mud filtrate concentration, a water-based mud having a...
|
|
|
6937939 |
Soil measuring instrument, soil measurement assisting device and method, recorded medium on which a program is recorded, recorded medium on which data is recorded, application amount controller, application amount determining device, method for them, and farm working determination assisting system
A model for determining the type of soil, the water content of a soil, and the soil properties, and a soil measurement data storage portion ( 60 ) to store therein measurement data necessary to...
|
|
|
6867413 |
High-flow rate, low-noise, gas sampling apparatus and methods for collecting and detecting particulate in a gas
A high-flow rate, low-noise, gas sampling apparatus for collecting particulate such as biological, chemical, and radioactive material from a gas on a collector such as an impaction collector...
|
|
|
6847033 |
Method and device for quickly and continually detecting changes in the concentration of radon gas that is dissolved in water
The invention describes a method and a device for the continual and, in particular, for a fast detection of changes of the concentration of radon gas dissolved in water by means of a transfer into...
|
|
|
6781692 |
Method of monitoring the fabrication of thin film layers forming a DWDM filter
A narrow band ellipsometer is used to monitor and control the formation of thin layers in an multilayer, thin film interference filter. Optical interference filters used for DWDM application have a...
|
|
|
6744055 |
Miniature personal and area radon and thoron monitor
A Rn222 (radon) and Rn220 (thoron) radiation monitor that uses alpha-track detection film in multiple, separate chambers to detect radiation, wherein different diffusion barriers are used in each...
|
|
|
6715347 |
Apparatus and method for determining measures of the permeability of HC-bearing formations using fluorescence
Formation drilling cuttings are centrifuged and a sediment sample is extracted and heated to burn off surface hydrocarbons. A non-fluorescing diluant is added to the sediment. The sediment is then...
|
|
|
6670605 |
Method and apparatus for the down-hole characterization of formation fluids
Disclosed is a formation fluid analysis module which utilizes a down-hole mass spectrometer to determine the molecular constituents of formation fluids, as distinguished from drilling contaminants,...
|
|
|
6627873 |
Down hole gas analyzer method and apparatus
A logging while drilling and wire line system for analyzing the concentration of carbon dioxide or another substance, in a sample down hole in a bore hole. A chamber is filled with a sample that...
|
|
|
6588266 |
Monitoring of downhole parameters and tools utilizing fiber optics
The present invention provides systems utilizing fiber optics for monitoring downhole parameters and the operation and conditions of downhole tools. In one system fiber optics sensors are placed in...
|
|
|
6577697 |
Field analysis of geological samples using delayed neutron activation analysis
A system and method for rapidly analyzing elemental abundances in rock or soil samples ( 14 ) under field conditions. The system uses a portable neutron source ( 12 ) to allow neutron activation...
|
|
|
6501072 |
Methods and apparatus for determining precipitation onset pressure of asphaltenes
The optical density of an oil sample at a plurality of wavelengths over a plurality of different (typically decreasing) pressures is monitored and used to find the size of agglomerated asphaltene...
|
|
|
6498341 |
Method for characterizing ground water measurement points by distinguishing ground water from subterranean water accumulation
The invention describes a method and apparatuses for characterizing groundwater measuring sites by differentiating between groundwater and static water and serves, for example, for determining the...
|
|
|
6492641 |
Apparatus and method for gamma-ray determination of bulk density of samples
A nuclear density gauge and test method is provided for measuring bulk density, especially of a cylindrically shaped sample such as asphalt paving material. The gauge comprises a base; a sample...
|
|
|
6474152 |
Methods and apparatus for optically measuring fluid compressibility downhole
The compressibility of a formation hydrocarbon sample is determined downhole by using a borehole tool to obtain the sample downhole, and, at two different pressures, subjecting the sample to near...
|
|
|
6350986 |
Analysis of downhole OBM-contaminated formation fluid
A method and apparatus is provided for determining a quality of downhole fluid. A series of measurements are taken of at least one parameter of borehole fluid that is indicative of OBM filtrate...
|
|
|
6343507 |
Method to improve the quality of a formation fluid sample
The present invention provides a method for improving the quality of a formation fluid sample by taking the sample at a time when the formation fluid composition contains the most favorable portion...
|
|
|
6288400 |
Portable apparatus for the measurement of environmental radon and thoron
The radometer is a portable instrument for the measurement of the concentration of atmospheric radon/thoron in a test area. A constant velocity pump pulls the air from the outside at a constant...
|
|
|
6275645 |
Method of and apparatus for subsurface exploration
A method and probe for subterranean determination of the concentration of a substance has a light-conducting optical fiber running from above the ground to a measurement cell below the ground. The...
|
|
|
6274865 |
Analysis of downhole OBM-contaminated formation fluid
A method and apparatus is provided for determining OBM filtrate fraction in a downhole fluid sample. One embodiment of the method is used when there is significant difference between the coloration...
|
|
|
6271518 |
Process for detecting and characterizing formation hydrocarbons
The present invention relates to the exploration for and exploitation of formation hydrocarbons. According to the invention, a sample of material, representative of the impregnation with...
|
|
|
6232598 |
Process and devices for characterizing ground water measurement points by distinguishing ground water from subterranean water accumulation
The invention describes a method and apparatuses for characterizing groundwater measuring sites by differentiating between groundwater and static water and serves, for example, for determining the...
|
|
|
6229312 |
Method and device for fast measurement of the resistivity index of solid samples such as rocks
Method and device for measuring the resistivity index curve (Ir) of a solid sample such as a geologic sample independently of the capillary pressure curve (Pc). Multi-frequency complex impedance...
|
|
|
6218662 |
Downhole carbon dioxide gas analyzer
A logging tool system for analyzing the carbon dioxide concentration in a fluid sample downhole in a borehole. A chamber is filled with the fluid sample and is closed to isolate the fluid sample...
|
|
|
6194216 |
Method for determination of amine-based additives in drilling fluid filtrates
The invention concerns a method for determining the presence and quantity of an amine-based additive in fluids, particularly aqueous fluids used in hydrocarbon recovery such as drilling fluids,...
|
|
|
6097027 |
Identifying oil columns
A method of using natural oil inclusions in rock that is capable of oil entrapment to determine whether that rock has had, or presently contains, oil, comprising the steps of: selecting two or more...
|
|
|
5952655 |
Ultra-high sensitivity radiation detection apparatus and method
A method and apparatus are provided to concentrate and detect very low levels of radioactive noble gases from the atmosphere. More specifically the invention provides a method and apparatus to...
|
|
|
5939717 |
Methods and apparatus for determining gas-oil ratio in a geological formation through the use of spectroscopy
Methods according to the invention include providing an OFA tool which subjects formation fluids to NIR illumination and which provides a spectral measurement of peaks at about 6,000 cm -1 and...
|
|
|
5898374 |
Sump alarm with radon detection
A galvanic cell is formed when ground water within a sump reservoir, tub or other pool, rises to contact electrodes constructed of dissimilar metals, the electrodes mounted in a bridge, with...
|
|
|
5859430 |
Method and apparatus for the downhole compositional analysis of formation gases
A borehole tool analyzes the composition of gases flowing from a formation. The tool includes an optical fluid analyzer (OFA) and a gas analysis module (GAM). The OFA determines when fluid flowing...
|
|
|
5834628 |
Activity weighted particle size distribution system
A system for measuring the size distribution of particles on which radioactive atoms are attached including: an air flow channel for receiving an influx of the radioactive atoms, a fan for...
|
|
|
5833395 |
Method for reducing the concentration of contaminating radioactive material in contaminated soil
A method for reducing the concentration of radioactive material in a contaminated area by removing contaminated soil from the contaminated area; determining a field survey specific activity...
|
|
|
5780850 |
API estimate using multiple fluorescence measurements
A method for evaluating the API gravity of a sample of underground formation includes steps of: Solvating a known volume of an underground formation sample in a known volume of a solvent which...
|
|
|
5729013 |
Wellbore infrared detection device and method
A production logging device, insertable into a cased or uncased wellbore for determining concentration of specified components in flowing production fluid, is provided having a tool body sized...
|
|
|
5686724 |
Method for determining oil content of an underground formation using wet cuttings
Methods are disclosed for evaluating wet cutting from a well borehole to determine the hydrocarbon content of the earth formations penetrated by the well borehole. The wet cuttings to be measured...
|
|
|
5656810 |
Method and apparatus for evaluating the composition of an oil sample
A method and apparatus for evaluating the composition of an oil sample. The method and apparatus are premised on the discovery that spectral differences can be observed in the luminescence,...
|
|
|
5571962 |
Method and apparatus for analyzing drill cuttings
A method and apparatus for identifying cuttings from a wellbore is disclosed. The cuttings can be identified by measuring emissions such as alpha, beta, or gamma particles which emanate from the...
|
|
|
5572020 |
Simplified radon testing package
A radon test package of simplified and low cost construction. A generally flat outer packet is formed from a single sheet of radon barrier material folded to define two panels with facing inner...
|
|
|
5561516 |
Casingless down-hole for sealing an ablation volume and obtaining a sample for analysis
A casing-less down hole sampling system for acquiring a subsurface sample for analysis using an inductively coupled plasma system is disclosed. The system includes a probe which is pushed into the...
|
|
|
5557103 |
Method of analyzing drilling fluids
A method of quantitative analysis of free organic components in a drilling fluid comprising separating solid and liquid components of the drilling fluid using a non-filtering technique such as...
|
|
|
5543616 |
Identifying oil well sites
Methods for determining maximum oil saturation and possible oil zone location use natural oil inclusions in rock grains of granular rock samples. A first technique involves quantitatively...
|