Matches 1 - 49 out of 49


Match Document Document Title
US20090320584 ROTARY DRILL BITS AND SYSTEMS FOR INSPECTING ROTARY DRILL BITS  
A method for conducting nondestructive internal inspection of a rotary drill bit used for drilling subterranean formations comprises communicating ultrasonic waves into a drill bit and detecting...
US20120130642 Downhole Tool Damage Detection System and Method  
A downhole tool damage detection method includes transmitting ultrasonic energy through a downhole tool, receiving ultrasonic energy transmitting through the downhole tool, monitoring the received...
US20140352422 Sensor pod housing assembly and apparatus  
A sensor pod housing assembly for placement within a borehole includes a housing, a selectively operable first hydraulic actuator supported by the housing and adapted to act in a first direction...
US20130327139 ACOUSTIC TRANSDUCER WITH IMPEDANCE MATCHING LAYER  
A device includes a piezoelectric transducer. The transducer has N independent transducer regions. N is an integer. Each of the N independent transducer regions has a thickness. Each of the N...
US20150007652 Acoustic Determination Of The Position Of A Piston With Buffer Rods  
An apparatus having a transducer configured to generate acoustic energy, a buffer rod with a first end and a second end, the transducer in contact with the first end, a cylinder configured to...
US20150143888 Wide Bandwidth Borehole Dipole Source  
A dipole source for borehole acoustic logging is provided, including a cylindrical shell, a center beam coupled to the cylindrical shell and a movable projector inside the cylindrical shell to...
US20140284137 Protection of Electronic Devices Used with Perforating Guns  
A sensing subassembly for use with a downhole tool comprises a housing, a cavity disposed within the housing, an electronic board disposed within the cavity, a stiffening member engaging the...
US20120179377 TRANSDUCER ASSEMBLY  
There is provided a transducer assembly for monitoring within a borehole. The transducer assembly is operable to at least one of: (a) generate acoustic radiation when excited with one or more...
US20070107507 MUTE PROCESSING APPARATUS AND METHOD FOR AUTOMATICALLY SENDING MUTE FRAMES  
A mute processing method used in a multi-person communication system is provided. The method is capable of automatically sending mute frames when there are no sound inputs from terminals of the...
US20140150523 CALIBRATION OF A WELL ACOUSTIC SENSING SYSTEM  
A method of calibrating a distributed acoustic sensing system can include receiving predetermined acoustic signals along acoustic sensors distributed proximate a well, and calibrating the system...
US20130000399 DOWNHOLE SENSORS IMPREGNATED WITH HYDROPHOBIC MATERIAL, TOOLS INCLUDING SAME, AND RELATED METHODS  
A downhole tool includes a sensor having a sensitive component, a polymer that at least partially covers the sensitive component, and a hydrophobic material impregnated within the polymer and/or...
US20090022010 EARTH ANALYSIS METHODS, SUBSURFACE FEATURE DETECTION METHODS, EARTH ANALYSIS DEVICES, AND ARTICLES OF MANUFACTURE  
Earth analysis methods, subsurface feature detection methods, earth analysis devices, and articles of manufacture are described. According to one embodiment, an earth analysis method includes...
US20120055243 Acoustic Transducers Using Quantum Tunneling Composite Active Elements  
In one aspect, the disclosure provides an apparatus for use downhole that includes at least one acoustic sensor. In one aspect, the acoustic sensor includes a chamber and an active element...
US20100095760 SHOCK AND VIBRATION ENVIRONMENTAL RECORDER FOR WELLBORE INSTRUMENTS  
A wellbore instrument includes a housing configured to traverse a subsurface wellbore. A shock and vibration sensor disposed in the housing and is mounted on a carrier disposed in the housing. The...
US20140202242 DOWNHOLE TOOL FOR DETERMINING LATERALS  
The present invention relates to a downhole tool (1) for determining laterals in a borehole wall (3) or a borehole casing (4), comprising a tool housing (5) extending along a longitudinal axis (6)...
US20150075275 ACOUSTIC SENSING SYSTEM AND METHOD OF ACOUSTICALLY MONITORING A TOOL  
An acoustic sensing system includes, an optical fiber, a plurality of pairs of reflectors distributed along the optical fiber at specific areas where acoustic energy data is sought, a source of...
US20140260591 Protection of Electronic Devices Used with Perforating Guns  
In an embodiment, a sensing subassembly for use with a downhole tool comprises a housing, a cavity extending into the housing, a sensor disposed at least partially within the cavity, a shock...
US20080092643 Sensor Configuration  
A sensing means comprises four uniaxial sensors each capable of detecting a movement component along a respective axis having a respective orientation and arranged such that the angles between any...
US20120324993 Transducer Assembly For A Downhole Tools  
Methods and related systems are described relating to a sealed acoustic transducer assembly for use in a wellbore is provided. A tool body is deployed in the wellbore, having a groove and a sealed...
US20140208843 Determining Perforation Orientation  
A method and apparatus for determining the relative orientation of objects downwell, and especially to determining perforator orientation, involves varying the orientation of an object, such as a...
US20150204819 Reflection-Only Sensor for Fluid Acoustic Impedance, Sound Speed, and Density  
Methods, systems, and devices for estimating a parameter of interest of a downhole fluid. Methods may include using at least two solid acoustic transmission media, including a first media and a...
US20150075276 FIBER OPTIC VIBRATION MONITORING  
An apparatus for monitoring vibration of a downhole component includes an optical fiber sensor including at least one optical fiber operably connected to an interrogation unit. The at least one...
US20140311235 Downhole Quartz Gauge with Minimal Electronics  
A system and method of monitoring a pressure, temperature, and/or vibration of a hostile environment without requiring the use of active electronics or an oscillator circuit in that environment....
US20150135819 MICROSEISMIC MONITORING WITH FIBER-OPTIC NOISE MAPPING  
The combination of one or more 3-component microseismic sensors deployed into a wellbore adjacent a microseismic event and a linear array of distributed fiber optic acoustic sensors deployed...
US20140290352 Protection of Electronic Devices Used with Perforating Guns  
A sensing subassembly for use with a downhole tool comprises a housing, a cavity disposed within the housing, at least one electronic component disposed within the cavity, and at least one...
US20110061454 SENSOR HOUSING APPARATUS  
A sensor apparatus includes a first elongated housing to at least partially enclose a sensor device and a second elongated housing coupled longitudinally to the first elongated housing. The second...
US20110219867 Measuring Apparatus with AE Sensor, Installing Method Thereof, and Set of the Measuring Apparatus  
Provided is a measuring apparatus with AE sensors, which detects the same AE signals with respect to the same events that damage a geotechnical structure, regardless of ground conditions and...
US20120024052 DOWNHOLE PRESSURE AND VIBRATION MEASURING DEVICE INTEGRATED IN A PIPE SECTION AS A PART OF A PRODUCTION TUBING  
The invention relates to a downhole pressure- and vibration-measuring device integrated in a pipe section (1) as part of a production tubing (20). The sensor housing (2) of the measuring device...
US20140123748 Borehole Microseismic Systems and Methods  
Devices and methods for borehole seismic investigation. The devices can include a first sensor for acquiring data relating to a microseismic event, a second sensor for detecting the start of a...
US20150233231 VIBRATION DETECTION IN A DRILL STRING BASED ON MULTI-POSITIONED SENSORS  
In some example embodiments, a system includes a drill string having a drill bit. The drill string extends through at least part of a well bore. The system also includes a first vibrational...
US20090133487 Downhole Communication Method and System  
A system and method is provided for communicating with a device disposed in a wellbore. Signals are sent through the Earth via signal pulses. The pulses are created by a seismic vibrator and...
US20130167628 METHOD AND APPARATUS FOR DETECTING AN ACOUSTIC EVENT ALONG A CHANNEL  
The present disclosure is directed at methods, apparatuses, and techniques for detecting an acoustic event along a channel. Different wavelengths of an optical signal are multiplexed along a fiber...
US20100089143 RESERVOIR MONITORING APPARATUS AND METHOD  
An apparatus for monitoring a reservoir. The apparatus can include a tube that is conveyable in a well, penetrating the reservoir. The apparatus can further include an expandable member coupled to...
US20120036924 METHOD AND APPARATUS FOR MEASURING FLUID PROCESS VARIABLE IN A WELL  
A sensor system for sensing a process variable of fluid at a first location including a variable resonator disposed at the first location having a resonant frequency which varies in response to...
US20110192222 PIEZOELECTRIC ACTUATOR FOR DOWNHOLE APPLICATIONS  
A transducer for use with a downhole tool, where the transducer includes concentric piezoelectric elements coupled with a member that extends from the top surface of one element to the bottom...
US20170145814 MANIPULATION OF MULTI-COMPONENT GEOPHONE DATA TO IDENTIFY DOWNHOLE CONDITIONS  
Methods and apparatus for using multi-component geophones and/or multi-component geophone arrays to measure flow-induced acoustic energy produced in wellbores are provided. With the use of the...
US20170058660 METHOD AND A SYSTEM FOR ULTRASONIC INSPECTION OF WELL BORES  
A well bore is inspected to detect cement defects that can give rise to leakage. The well bore comprises an inner metal pipe. Outside the inner metal pipe its configuration may vary with distance...
US20160202387 BEHIND PIPE EVALUATION TECHNIQUES FOR WELL ABANDONMENT AND COMPLEX ANNULAR ENVIRONMENTS  
A method includes introducing a tool string into a wellbore having annular material disposed in an annulus defined between casing and the wellbore. Obtaining acoustic refracted waveform...
US20160170081 DISTRIBUTED ACOUSTIC SENSING SYSTEM WITH VARIABLE SPATIAL RESOLUTION  
Systems and methods for distributed acoustic sensing based on coherent Rayleigh scattering are disclosed herein. A system comprises a pulse generator, an optical fiber coupled to the pulse...
US20160154142 ACOUSTIC SENSOR METADATA DUBBING CHANNEL  
A system for recording metadata is disclosed. The system includes an acoustic vibration sensing system. The system also includes one or more sensors operable to measure characteristic parameters....
US20160109603 METHOD AND APPARATUS FOR CHARACTERIZING ELASTIC ANISOTROPY FOR TRANSVERSELY ISOTROPIC UNCONVENTIONAL SHALE  
A method for estimating elastic properties of a subsurface material having a bedding plane includes disposing a single sample of the subsurface material in a core holder, the core holder having...
US20160102547 RESONATOR ASSEMBLY LIMITING MAGNETIC PARTICLE ACCUMULATION FROM WELL FLUIDS  
Systems, devices and methods for determining a parameter of interest of a well fluid relating to a well intersecting a subterranean formation using resonant vibration. The apparatus may include a...
US20160047227 Device for High-Temperature Applications  
A device for high-temperature applications is provided. The device includes a base member and at least one electrically conducting layer. The electrically conducting layer is made of...
US20160003033 APPARATUS AND METHODS FOR MONITORING THE RETRIEVAL OF A WELL TOOL  
A system to monitor the retrieval of a well tool from a wellbore comprises a deployment member coupled to the well tool to retrievably insert the well tool in the wellbore. At least one first...
US20150346370 METHOD OF CALIBRATION FOR DOWNHOLE FIBER OPTIC DISTRIBUTED ACOUSTIC SENSING  
A method of operating a distributed acoustic sensing (DAS) system and a DAS system are described. The method includes disposing the DAS system to measure acoustic signals in a borehole,...
US20150267531 HYBRID TRANSPONDER SYSTEM FOR LONG-RANGE SENSING AND 3D LOCALIZATION  
Systems for determining a size, extent, and orientation of a hydraulic fracture of a reservoir, are provided. An exemplary system can include a plurality of RFID transponders modified to include...
US20140373619 METHOD AND APPARATUS FOR MEASURING DEFORMATION OF ELASTOMERIC MATERIALS  
A method for measuring the deformation of elastomeric materials using acoustic signals involves obtaining a sample, positioning the sample in a sealable chamber, sealing the chamber, and setting a...
US20120080183 REMOTELY CONTROLLED APPARATUS FOR DOWNHOLE APPLICATIONS, COMPONENTS FOR SUCH APPARATUS, REMOTE STATUS INDICATION DEVICES FOR SUCH APPARATUS, AND RELATED METHODS  
An expandable apparatus may comprise a tubular body, a valve piston and a push sleeve. The tubular body may comprise a fluid passageway extending therethrough, and the valve piston may be disposed...
US20110167910 APPARATUS AND METHOD FOR DETECTING A PROPERTY OF A FLUID  
An apparatus comprises a tensioned sample tube that receives a fluid sample, the tensioned sample tube has a pre-determined tension applied thereto. A vibration source and a vibration detector are...

Matches 1 - 49 out of 49