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7618822 |
Predictive crude oil compatibility model
A method for blending at least two hydrocarbon liquids, the method comprising: (a) determining the critical solvent power for each hydrocarbon liquid by (i) mixing each hydrocarbon liquid with...
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7445934 |
System and method for estimating filtrate contamination in formation fluid samples using refractive index
A method and apparatus is described for estimating terminal purity or terminal contamination for a fluid during the withdrawal of the fluid from a subsurface formation. The apparatus and method...
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7435597 |
Assays for zero-valent transition metals in sedimentary rocks using carbon monoxide with application to oil and gas exploration
The present invention is directed to novel assays for zero-valent transition metals. The novel assays of the present invention are generally methods or processes for quantitatively and/or...
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7393689 |
Method and apparatus for characterizing coal tar in soil
The present invention provides a method and apparatus or system for determining an amount of coal tar that can enter, and subsequently be displaced from, a given type of soil for a range of depths...
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7344889 |
Chemical structural and compositional yields model for predicting hydrocarbon thermolysis products
A method of predicting the composition of hydrocarbon products of a complex carbonaceous material when exposed to specific time and temperature conditions is disclosed. In one embodiment, the...
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7223603 |
Continuous on-line process control of residua distillation
Ultrasonic spectroscopy, calorimetry, or thermogravimetric analysis provide measures which correlate with properties of asphaltene complex of petroleum residua which can be used to establish or...
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7223602 |
Continuous tracer generation method
The invention provides a method of online and on-site tracer generation for tagging natural gas stored in underground storage fields wherein feedstock is drawn from a feedstock source. The...
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7208451 |
IMS detection of chemical markers in petroleum products
A method and composition for identifying chemically tagged petroleum products can be achieved by adding one or more chemicals to a selected petroleum product wherein the chemical is immune to...
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7160728 |
Methods for optimal usage and improved valuation of corrosive petroleum feedstocks and fractions (law521)
The invention is a method to improve the prediction of the corrosivity of organic acids in petroleum crudes, feedstocks and distillation fractions by providing a more accurate, repeatable, and...
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7153688 |
Rock assay for predicting oil or gas in target reservoirs
The present invention relates to assays for ascribing catalytic activity to rock samples by virtue of zero-valent transition metals potentially being present within the sample. Embodiments of the...
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7108237 |
Mounting bracket for a gaming machine
A mounting bracket for a slot machine is disclosed herein, where the slot machine is slid onto the mounting bracket. The mounting bracket insures proper alignment of the slot machine onto the...
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7008793 |
Method and device for taking a sample of an emulsion circulating in a line
The present invention is intended to take a sample of an emulsion circulating in a line. The emulsion is momentarily diverted from the main circulation line 1 thereof to a bypass line 2 . By...
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6869803 |
Method to quantitatively analyze conjugated dienes in hydrocarbon feeds and products as an indicator of fouling potential
A method to quantify the conjugated dienes in a feedstream including the steps of dissolving 4-methyl-1,2,4-trazoline-3,5-dione (MTAD) in said feedstream, and determining the molar concentration of...
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6828153 |
Method and apparatus for measuring the accessibility of porous materials with regard to large compounds
The present invention provides a method for testing the accessibility of porous materials with regard to large, often high-molecular weight compounds and correlating said accessibility to the...
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6773921 |
Predicting proximity to coke formation
Indicia of stability or thresholds of instability may be used to assess the proximity of hydrocarbon materials such as petroleum residua to deposition of carbon rich materials. The invention may be...
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6725926 |
Method of tracking fluids produced from various zones in subterranean wells
Compositions and methods for determining the source of treatment fluids being produced from a production formation having multiple zones by introducing a treatment composition having a tracking...
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6662116 |
Method for analyzing an unknown material as a blend of known materials calculated so as to match certain analytical data and predicting properties of the unknown based on the calculated blend
A method for determining a property of an unknown material including the steps of determining the IR spectrum of the unknown material, fitting the IR spectrum to a linear combination of known...
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6630357 |
Quantification of bitumen using NMR
A method of determining the composition of a sample including heavy oil or bitumen and water using low-field NMR. The NMR spectrum of the sample is taken at relatively low and high temperatures and...
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6591702 |
Method for identifying sources of rapidly released contaminants at contaminated sites
A method for identifying and characterizing contaminated sources in a site having contaminated soils and sediments in which vapor pressure is measured at a plurality of subsurface soil sampling...
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6534318 |
Mass spectrometric multivariate analysis
This invention relates to the selection of a crude oil or crude oil blend for the production of high-performing paving asphalt based on molecular composition of the asphalt and of the parent crude...
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6479299 |
Pre-disposed assay components in microfluidic devices and methods
Microfluidic devices having predisposed assay components for increased throughput and prolonged shelf life are provided.
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6413782 |
Methods of manufacturing high-throughput screening systems
Microfluidic devices for analyzing a plurality of compounds are manufactured for performing high throughput screening assays. The methods are used to manufacture devices that screen large numbers...
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6331436 |
Tracers for heavy oil
A process of using a non-radioactive tracer in the monitoring of the flow of a traced fluid is disclosed. The process includes injecting a tracer containing fluid at a first point and analyzing at...
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6321595 |
Characterization of organic contaminants and assessment of remediation performance in subsurface formations
Characterization of organic contaminants in subsurface formation is performed by methods for detecting the presence of nonaqueous phase liquid in a subsurface formation, and for determining the...
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6319717 |
Thermal acid base accounting in mine overburden
The present invention is a one-step thermal method for analyzing the acid-base content of earth samples, specifically mine overburden samples. By using a low oxygen concentration, preferably about...
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6312958 |
Method for marking liquids with at least two marker substances and method for detecting them
The present invention relates to a method of marking liquids using at least two markers, wherein said markers absorb in the 600-1200 nm region of the spectrum and reemit fluorescent light and the...
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6117682 |
Method for detecting hydrocarbons in water
The presence of hydrocarbons in water is detected by contacting a water sample with an adsorbent material to extract hydrocarbons from the water sample and then contacting the adsorbent material...
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5958777 |
Device for determining CO.sub.2 and CO in a geologic sediment
A device for determining at least one petroleum characteristic of a geologic sediment sample placed in a boat, said device including a first heater heating said sample in a non-oxidizing...
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5942444 |
Marking of products to establish identity, source and fate
In general, the invention features a method of marking a product for identification in which a marker, composed of a print molecule, print molecule analogue, or molecularly imprinted molecule, are...
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5928954 |
Tagging hydrocarbons for subsequent identification
Method for tagging hydrocarbons and for detecting the presence of tagged hydrocarbons in a hydrocarbon mixture. The method can be utilized to tag gasoline, diesel fuel, heating oil, lubricating oil...
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5928950 |
Method for detecting hydrocarbons in soil
The presence of hydrocarbons in soil is detected by immersing a soil sample in a water-miscible solvent capable of dissolving the hydrocarbons to extract hydrocarbons from the soil into the...
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5922611 |
Determining a parameter in a physical system
A method of determining a parameter of a physical model representing the electrical behavior of a composition is provided. The method comprises defining said model by a relationship between the...
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5919710 |
Optical method for quantitating dissolved oxygen in fuel
A method for the quantitative determination of dissolved oxygen in a liquid fuel includes the steps of doping a sample of the fuel with a preselected concentration of a probe material including a...
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5905043 |
Tagging and identifying organic liquids including fuels
A water-immiscible organic fluid is tagged and identified by tagging the organic fluid with between about 0.25 and about 100 ppm of a marker compound having the formula: ##STR1## where the OH...
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5843787 |
Method allowing the fast assessment of at least one petroleum characteristic of a rock sample-application to a reservoir comprising heavy oils
A method allowing fast assessment of at least one petroleum characteristic of geologic sediments from a sample of these sediments, said method comprising heating the sample in a non-oxidizing...
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5834655 |
Contamination text
A method for testing petroleum hydrocarbon contamination in which method a sample is mixed with an alkyl halide extraction solvent. Subsequently the solvent extraction phase is separated, and a...
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5811308 |
Method for determining petroleum characteristics of geologic sediments
The present invention relates to a method for determining at least one petroleum characteristic of a geologic sediment sample heated in a non-oxidizing atmosphere and an oxidizing atmosphere. The...
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5776713 |
Marking of products to establish identity and source
In general, the invention features a method of marking a product for identification in which a marker, composed of a low molecular weight hapten covalently bound to a compound, is associated with...
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5699269 |
Method for predicting chemical or physical properties of crude oils
A method for predicting the properties of crude oils or their boiling fractions which comprises selecting a chemical or perceptual or physical or performance property or groups of properties of the...
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5679574 |
Quantitative test for oils, crude oil, hydrocarbon, or other contaminants in soil and a kit for performing the same
A method for the quantitative determination of oil in a soil matrix is provided, in which the method involves: extracting a soil sample with a solvent in the presence of a drying agent to provide...
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5525516 |
Method for tagging petroleum products
This invention provides a method for imparting invisible markings for identification purposes to petroleum hydrocarbons by incorporating one or more infrared fluorescing compounds therein. Certain...
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5439800 |
Offshore petroleum exploration system
A system is provided for locating and delineating sea floor occurrences of petroleum seepage, achieved by apparatus for the detection of the resulting abnormal distribution of electrical potential...
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5416024 |
Obtaining collective fluid inclusion volatiles for inclusion composition mapping of earth's subsurface
A collective fluid inclusions volatiles sample is released from each of a plurality of sedimentary rock samples and analyzed as it is being released to determine composition thereof. Compositions...
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5395768 |
Method to evaluate the R.sub.wb parameter of the dual water log interpretation model
A method is described to evaluate the R wb parameter, which can be applied to the Dual Water log interpretation model by measuring the resistivity of initial brines and of filtrates from muds...
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5360738 |
Method of quantitative analysis of drilling fluid products
A method of quantitative analysis of products, such as barite, bentonite or polymers, in a drilling fluid circulating in a wellbore being drilled is described. The method includes the steps of...
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5351532 |
Methods and apparatus for making chemical concentration measurements in a sub-surface exploration probe
An in-hole oil-drilling probe is mountable in a drill string to measure hydrocarbon concentrations in drilling fluid flowing around the drill string. The probe consists of a drill collar which is...
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5344781 |
Detection and prevention of hydrocarbon leakage from underground storage tanks
Methods and apparatuses for detecting leakage of hydrocarbons from and preventing corrosion of underground storage tanks. Soil samples near an underground storage tank are taken and analyzed in the...
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5328849 |
Inclusion composition mapping of earth's subsurface using collective fluid inclusion volatile compositions
A collective fluid inclusions volatiles sample is released from each of a plurality of sedimentary rock samples and analyzed as it is being released to determine composition thereof. Compositions...
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5325709 |
Measurement, calibration and probe storage apparatus for measuring pH of fluids and slurries
A measurement/calibration/probe storage apparatus particularly suitable for measuring pH of fluids and slurries used in the treatment of oil and gas wells. The apparatus includes an enclosure...
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5320807 |
Test kits for determining the chemical stability of a compost sample
A test kit for determining the `total compost life`, and chemical stability of a moist compost sample, includes a transparent container for holding the compost sample, and a reactant mass, located...
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