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9029762 Downhole spectroscopic detection of carbon dioxide and hydrogen sulfide  
The present invention relates to a method for measuring the characteristics of a downhole fluid. The method for measuring the characteristics of a downhole fluid includes passing a downhole fluid...
9018591 Ruggedized tool and detector device  
A tool comprising a tool body having an opening defined by interior walls extending into the tool body and a casing disposed within the opening. The tool further includes a scintillator material...
9002650 Multiphase flow meter for subsea applications using hydrate inhibitor measurement  
Methods and apparatus for determining phase fractions (relative concentrations) within a multiphase fluid mixture, in the presence of an injected hydrate inhibitor. Combining this phase fraction...
8990020 Method and apparatus for measuring the vertical separation of two stations in a borehole  
A system and method for use in a downhole tool having a fluid density measurement device positioned therein are provided. In one example, the method includes deploying the downhole tool at a first...
8937280 System and method for wellbore monitoring  
A system for monitoring a borehole in an earth formation includes: a borehole string configured to direct a fluid into the earth formation; at least one optical fiber sensor disposed on the...
8923478 X-ray inspection apparatus for pipeline girth weld inspection  
An apparatus is provided for x-ray inspection of a pipeline girth weld. This comprises a directional x-ray source 5 which is insertable into a pipeline section and is rotatable within the...
8916816 Imaging systems and image fiber bundles for downhole measurement  
An example system for downhole measurement disclosed herein comprises a tool to be positioned downhole in a formation, the tool comprising an imaging system to determine measurement information...
8889036 Scintillator crystal materials, scintillators and radiation detectors  
The present disclosure describes a scintillation crystal having the general formula RE(1−y)MyF3XA3(1−x), wherein RE includes; A is selected from Cl, Br or I; and M is an activator ion selected...
8884215 Method and apparatus for analyzing composition of hydrocarbon and carbon dioxide gases liberated from drilling fluids  
In various embodiments is described a device and method for rapidly analyzing compositions of gases liberated from drilling fluid using spectral absorption analysis. Specifically the invention...
8867040 In-situ detection and analysis of methane in coal bed methane formations with spectrometers  
The invention subject of this disclosure teaches a method of determining a production factor for a carbonaceous material reservoir, the method comprising: providing a well in a carbonaceous...
8816271 Device for emitting a first beam of high-energy photons and a second beam of lower-energy photons, and associated method and measuring unit  
This device comprises a single radioactive source (44), capable of creating an incident beam (120), and a target (48) placed opposite the source (44). The target (48) is capable of creating the...
8803097 Radiation detector device having a plurality of boot sections  
A scintillation device includes a scintillator body and a plurality of boot sections spaced apart from each other by at least one gap. Each of the plurality of boot sections substantially...
8785841 Scintillation detector package having radioactive window therein  
A scintillator package includes a housing, with a scintillator in the housing to scintillate when struck by radiation. A window seals an end of the housing to permit light emitted during a...
8779352 Scintillator body with spiral surface scratches  
A radiation detector may include a housing and a scintillator body carried by the housing. The scintillator body may have an exterior surface with a plurality of surface scratches spiraling around...
8779350 Density derived from spectra of natural radioactivity  
The present disclosure relates to borehole logging methods and apparatuses for estimating at least one parameter of interest of a volume of interest of an earth formation using nuclear radiation....
8770283 Systems and methods for distributed interferometric acoustic monitoring  
A method and system for acoustic monitoring using a fiber optic cable. The optical fiber is used as a distributed interferometer that may be used to monitor activity, such as activity with respect...
8760657 In-situ detection and analysis of methane in coal bed methane formations with spectrometers  
Disclosed is a system for measuring a chemical in a subsurface formation comprising housing component traversable within the well, a guide extending down the well from a fixed location being...
8754362 Method for detecting fractures and perforations in a subterranean formation  
Fractures at a wellbore wall and in a region surrounding a wellbore wall can be detected by monitoring gamma rays scattered from the fractures. Gamma rays are strategically directed from a tool...
8742329 Well flaw detection system (embodiments)  
This invention relates to nondestructive control, more specifically, to the detection of cracks, flaws and other defects in oil and gas wells and cementing quality control.
8704160 Downhole analysis of solids using terahertz spectroscopy  
Methods and apparatus are provided for determining the composition of solid materials located downhole in a formation. Examples of solid materials that may be investigated downhole include scale...
8704159 Method and apparatus for estimating a downhole fluid property using a charged particle densitometer  
An apparatus, system and method are disclosed for estimating a property of a fluid downhole, the apparatus including but not limited to a carrier that is conveyable in a borehole; a test cell...
8692183 Method and apparatus for estimating a downhole fluid property using a miniature integrated circuit spectrometer  
An apparatus for estimating a property of a downhole fluid includes a carrier that is conveyable in a borehole, a test cell carried by the carrier for capturing the downhole fluid, an integrated...
8692184 Material property gauges and related methods for determining a property of a material  
The subject matter described herein includes methods, systems, and computer program products for measuring the density of a material. According to one aspect, a material property gauge includes a...
RE44728 In-situ detection and analysis of methane in coal bed methane formations with spectrometers  
A measuring system for in-situ measurements down a well (1) by a spectrometer (4) is provided. The spectrometer (4) includes a radiation source (5) and a detector (6). A probe (15) optically...
8618472 Downhole carbon logging apparatus, systems, and methods  
In some embodiments, apparatus, systems, and methods may operate to emit radiation into an earth formation from a source positioned below a surface of the earth, collect resulting radiation that...
8604417 Targetless pulsed neutron generator using beam-beam interaction  
Method and apparatus for evaluating an earth formation using a pulsed neutron source comprising of dual beams of oppositely directed hydrogen isotopic ions with timing and focal characteristics of...
8582712 Methods of detection and identification of carbon- and nitrogen-containing materials  
Methods for detecting and identifying carbon- and/or nitrogen-containing materials are disclosed. The methods may comprise detection of photo-nuclear reaction products of nitrogen and carbon to...
8569686 Multi-channel infrared optical phase fraction meter  
Methods and apparatus for measuring a phase fraction of a flow stream are disclosed. An infrared phase fraction meter includes a light source for emitting into a flow stream infrared radiation...
8511379 Downhole X-ray source fluid identification system and method  
A method and system for determining a property of a sample of fluid in a borehole. A fluid sample is collected in a downhole tool. While collecting, X-rays are transmitted proximate the fluid from...
8492706 Methods, systems, and computer program products for measuring the density of material including an electromagnetic moisture property detector  
The subject matter described herein includes methods, systems, and computer program products for measuring the density of a material. According to one aspect, a material property gauge includes a...
8481920 Apparatus and method for determining formation density from nuclear density measurements made using sensors at more than one location  
In one aspect, the present disclosure provides an apparatus for determining formation density. One embodiment of the apparatus includes a bottomhole assembly having a drill bit attached to end...
8461519 Water detection and 3-phase fraction measurement systems  
Methods and apparatus enable monitoring a hydrocarbon well for water within a flow stream of the well. A water detector includes a light source for emitting into a flow stream infrared light that...
8436296 Filter wheel assembly for downhole spectroscopy  
A downhole fluid analysis tool has a tool housing and a fluid analysis device. The tool housing is deployable downhole and has at least one flow passage for a fluid sample. The fluid analysis...
8436295 Device for measuring mean free path, vacuum gauge, and method for measuring mean free path  
The present invention provides a device for measuring a mean free path capable of measuring directly the mean free path of a charged particle, a vacuum gauge, and a method for measuring a mean...
8436309 Multi-channel infrared optical phase fraction meter  
Methods and apparatus for measuring a phase fraction of a flow stream are disclosed. An infrared phase fraction meter includes a light source for emitting into a flow stream infrared radiation...
8410423 Nuclear gauges and related methods of assembly  
Nuclear gauges, their components and method for assembly and adjustment of the same are provided. The nuclear gauges are used in measuring the density and/or moisture of construction-related...
8390471 Telemetry apparatus and method for monitoring a borehole  
A system, method and device may be used to monitor conditions in a borehole. Energy is transmitted to a pulse generator located proximate a position to be interrogated with a sensor. The pulse...
8347958 Systems and methods for distributed interferometric acoustic monitoring  
Acoustic monitoring is carried out using a fiber optic cable. Coherent Rayleigh noise generated by the transmission of a coherent beam of radiation through the fiber optic cable is detected, a...
8304714 Chemical sensor using four wave mixing technique  
A sensor for measuring a property of a chemical, the sensor including: a light source; and a mixing medium in optical communication with the light source and exposed to the chemical; wherein four...
8299420 Neutron shielding for downhole tool  
A downhole tool for performing measurement of a formation. The tool comprising a housing surrounding a source for generating neutrons and a detector for detecting the neutrons. A shield is located...
8274041 Water detection and 3-phase fraction measurement systems  
Methods and apparatus enable monitoring a hydrocarbon well for water within a flow stream of the well. A water detector includes a light source for emitting into a flow stream infrared light that...
8225867 Systems and methods for distributed interferometric acoustic monitoring  
Acoustic monitoring is carried out using a fiber optic cable. Coherent Rayleigh noise generated by the transmission of a coherent beam of radiation through the fiber optic cable is detected, a...
8173955 Methods and apparatus to optically determine velocities of downhole fluids  
Methods and apparatus to optically determine velocities of downhole fluids are disclosed. Some example methods to determine a velocity of a downhole fluid include exciting a fluorescent substance...
8164050 Multi-channel source assembly for downhole spectroscopy  
A multi-channel source assembly for downhole spectroscopy has individual sources that generate optical signals across a spectral range of wavelengths. A combining assembly optically combines the...
8146655 Methods and apparatus for downhole characterization of emulsion stability  
A method (and corresponding apparatus) for downhole fluid analysis of petroleum formation fluids. The method includes capturing in a chamber of a downhole tool at least two immiscible formation...
8141633 Detecting fluids in a wellbore  
In one general implementation, a method for identifying fluids in a wellbore includes generating light in a visible spectrum from a light source in a production wellbore; generating light in an...
8143570 Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation  
The invention relates to methods and apparatus for determining a downhole parameter in an underbalanced drilling environment which include: selectively activating a first fluid flowing from the...
8138471 X-ray backscatter device for wellbore casing and pipeline inspection  
An apparatus for inspection in situ of a wellbore casing and a pipeline from inside the wellbore or pipeline. The apparatus includes a penetrating radiation source such as x-rays, a rotatable beam...
8076634 Neutron shielding for downhole tool  
A downhole tool for performing measurement of a formation. The tool comprising a housing surrounding a source for generating neutrons and a detector for detecting the neutrons. A shield is located...
8071937 Methods, systems, and computer program products for measuring the density of material including a non-nuclear moisture property detector  
The subject matter described herein includes methods, systems, and computer program products for measuring the density of a material. According to one aspect, a material property gauge includes a...

Matches 1 - 50 out of 226 1 2 3 4 5 >