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Class 436/30 - Removing and testing drilling mud or fluid


Subclass of Class 436 - Chemistry: analytical and immunological testing
Definition: Processes or compositions wherein drilling mud or drilling
No. of patents: 50
Last issue date: 03/04/2008


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NumberTitleIssue Date
7339160Apparatus and method for analysing downhole water chemistry
The invention concerns an apparatus for analysing water chemistry. According to the invention, the apparatus is adapted to operate downhole and comprises a colouring agent supply device for supplying a colouring agent to a water sample, the colour of the water sampl...
03/04/2008
7229831Leak site odorization for gas leak detection
An apparatus for detecting a leak of a fluid from a vessel having an inner wall and an outer wall includes: at least one odorant layer adjacent the inner wall or the outer wall; and at least one semi-permeable material layer adjacent the odorant layer. ...
06/12/2007
7210342Method 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
7124030Mud gas isotope logging interpretive method in oil and gas drilling operations
A method of interpreting mud gas samples in a drilling operation of a target area. The method starts with obtaining a plurality of mud gas samples at a plurality of incremental depths of the target area. The plurality of mud gas samples are analyzed to find various ...
10/17/2006
7095012Methods 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 compounds in a formation fluid sample. ...
08/22/2006
7008793Method 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 restoring circulation of the emulsion in main line 1, a...
03/07/2006
6967340Ion beam irradiation device and operating method thereof
An ion beam irradiation device includes a vacuum chamber and a stage on which at least two substrates may be mounted such that each substrate has an inclination angle to a horizontal plane of the vacuum chamber. The stage moves in one direction. An ion gun provided ...
11/22/2005
6939717Hydrogen sulphide detection method and apparatus
Described is a downhole method and apparatus for detecting hydrogen sulphide in formation fluids produced in a hydrocarbon well. The sensor system is located within or in communication with an extraction chamber used to extract hydrogen sulphide in a gaseous state f...
09/06/2005
6852286Device for extracting and taking samples from an aqueous solution in a substrate
A device is provided for extraction of samples of an aqueous solution in a substratum. A probe made up of a pyrometric capsule of porous porcelain has one end of lesser diameter to which is attached a tube of inert material. The tube is sealed hermetically by a rubb...
02/08/2005
6534318Mass 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 oil or crude oil blend based, at least in part, on high re...
03/18/2003
6443001Method and system for extracting, analyzing and measuring constituents transported by a bore fluid
The present invention relates to an extraction, analysis and measuring method and system intended for constituents carried along by a well fluid during drilling operations. The system comprises in combination: draw-off means (4) for taking a volume of the...
09/03/2002
6323034Amorphous TFT process
A thin film transistor design is described which is not subject to either dark or photo current leakage. The process to manufacture this device begins with the formation of a gate electrode on a transparent substrate followed by its over coating with laye...
11/27/2001
5998211Use of compounds which absorb and/or fluoresce in the IR region as markers for liquids
Use of compounds from the class of the phthalocyanines, naphthalocyanines, nickel dithiolene complexes, aminium compounds of aromatic amines, methine dyes or azulenesquaric acid dyes which have their absorption maximum in the range from 600 to 1,200 nm an...
12/07/1999
5958777Device for determining CO2 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 atmosphere, a measuring component determining hydrocarbon-containing...
09/28/1999
5919710Optical 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 luminophor which exhibits luminescence of wavelength which ...
07/06/1999
5905036Characterization 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 composition and for determining the volume of nonaqueous phas...
05/18/1999
5843787Method 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 atmosphere, and which method comprises different temperature ri...
12/01/1998
5811308Method 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 sample is heated to a first temperature value below 200° C...
09/22/1998
5804447Use of compounds which absorb and/or fluoresce in the IR region as markers for liquids
Use of compounds from the class of the phthalocyanines, naphthalocyanines, nickel dithiolene complexes, aminium compounds of aromatic amines, methine dyes or azulenesquaric acid dyes which have their absorption maximum in the range from 600 to 1,200 nm an...
09/08/1998
5786225Method for evaluating a pollution characteristic of a soil sample
A method of evaluating at least on type of pollution characteristic in a soil sample contaminated by hydrocarbon compounds, a method wherein the soil sample is first heated in a non-oxidizing atmosphere, then in an oxidizing atmosphere. The method compris...
07/28/1998
5741707Method for quantitative analysis of earth samples
A method and apparatus for analyzing a sample to determine its mineral composition. The invention combines X-ray diffraction with Fourier transform infrared spectroscopy to provide a complete spectrum including molecular vibrations, probed by FTIR scans a...
04/21/1998
5679574Quantitative 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 an extract containing oil, if present in the soil sample, w...
10/21/1997
5641642In situ biofilm coupon device
An apparatus for characterization of in-situ microbial biofilm populations in subsurface groundwater. The device permits biofilm-forming microorganisms to adhere to packing material while emplaced in a groundwater strata, so that the packing material can ...
06/24/1997
5627076Method for determination of glycols and polyglycols in drilling fluid filtrates
An apparatus and method is presented for the determination of water soluble glycols and polyglycols (polyalkoxylates). The apparatus and method are particularly suited for the on-site quantitation of glycols and polyglycols in aqueous drilling fluids....
05/06/1997
5470749Method for determining steam quality using a foaming surfactant
Steam quality is measured by mixing the steam with a small amount of surfactant to convert the steam to a stable foam, passing the stable foam through a capillary tube to determine foam quality (volume of vapor per volume of vapor and liquid) by measuring...
11/28/1995
5397708Method for detection of sulfides
A method for determining the concentration of sulfide in a process stream. The method comprises the steps of adding to a process stream a sulfide scavenger (probe) that changes electronic properties when it reacts with sulfide. One can then monitor the el...
03/14/1995
5360738Method 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 sampling the drilling fluid, and analysing the sample to deter...
11/01/1994
5344781Detection 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 field, preferably using hexane as a solvent to detect the...
09/06/1994
5319966Determining location and composition of liquid contaminants in geologic formations
A method is provided for locating non-aqueous phase liquid in an aquifer. An aqueous solution having the capacity to solubilize the contaminating liquid to concentrations greater than the solubility of the contaminant in water is injected and produced thr...
06/14/1994
5304494Method of analyzing hydrocarbon oil mixtures using gel-permeation chromatography
A method of analyzing a mixture of hydrocarbon oils by using gel-permeation chromatography together with infrared detection. According to the method the signals from the infrared detector are combined to form fingerprints (M) which are characteristic of t...
04/19/1994
5266496Headspace analysis
A process for extracting and analyzing virtually any sample which may be contaminated with pollutants, toxics or other impurities. The process can be used to extract and analyze one contaminant, such as a volatile compound (gasoline), or the process can b...
11/30/1993
5212093Method to determine drift and residual oil saturation
Drift or residual oil saturation within a reservoir around a wellbore is determined by injection of a water-soluble tracer and then producing from the well. This injection is performed twice. The first injection is immediately followed by production in or...
05/18/1993
5015586Method and apparatus useful in geochemical exploration for petroleum oils
Method and kit useful in geochemical exploration for petroleum oils. The method involves contacting a soil sample with serum from a rabbit that has not been immunized with petroleum oils, and determining the amount of the bound serum as indicative of the ...
05/14/1991
4992379Field test for aromatics in groundwater
A simple, on-site, field test method and kit for aromatic contamination in a water sample is provided. In the field test, the water sample is first extracted using an alkyl halide extractant, with a Friedel-Crafts Lewis acid catalyst being added to the re...
02/12/1991
4950594Microbiological assay using bioluminescent organism
A microbiological assay based on bioluminesce employing the bioluminescent dinoflagellate Pyrocystis lunula. An oil well drilling fluid sample is prepared according to E. P. A. procedures to obtain a suspended particulate phase sample. An aliquot of the s...
08/21/1990
4904603Monitoring drilling mud
The invention in one aspect provides a method of testing drilling mud in use which comprises periodically sampling the circulating mud and analyzing its aqueous filtrate at the rig site by ion chromatography for selected positive and negative ions; one or...
02/27/1990
4840910Controlling sulfide scavenger content of drilling fluid
The concentration of unspent zinc-based hydrogen sulfide scavenger in an aqueous drilling fluid is controlled by selectively extracting the unspent scavenger in a solvent, such as glacial acetic acid, measuring the concentration of dissolved zinc, for exa...
06/20/1989
4765182System and method for hydrocarbon reserve evaluation
During oil and gas well drilling operations, drilling fluid volume circulated per preselected vertical borehole increment drilled is continuously measured as well as the percentage by volume of hydrocarbon gas present in the return fluid. The gas is perio...
08/23/1988
4755469Oil tracing method
A method for tagging an oil so that subsequently it may be identified as to source by incorporating into the oil as a tracer material an oil-soluble or oil-dispersible Group VIB, Group VIIB or lanthanum series rare earth metal salt of a fatty acid. The so...
07/05/1988
4713347Measurement of ligand/anti-ligand interactions using bulk conductance
Methods, apparatus and sensors are described for detection of specific ligands in a fluid sample by measuring ligand-specific changes in the bulk electrical conductance (or resistance) of a fixed test volume, with antiligand or ligand localized in or near...
12/15/1987
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