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9042200 Downhole telemetry system  
A downhole telemetry system usable with a subterranean well comprises at least one pressure pulse generator, at least one pressure transmitter located in an internal tube space in the well and at...
9019798 Acoustic reception  
A pressure-balanced acoustic-signal-receiving apparatus and methods therefor. The apparatus may comprise a first housing, a first actuator, a second housing, and a second actuator. The first...
9013957 Full flow pulser for measurement while drilling (MWD) device  
An apparatus, method, and system described for generating pressure pulses in a drilling fluid utilizing a flow throttling device longitudinally and axially positioned within the center of a main...
9007231 Synchronization of distributed measurements in a borehole  
A system and method to synchronize distributed measurements in a borehole are described. The system includes a plurality of wired segments coupled together by couplers and a plurality of nodes...
8988969 Detection of cross bores involving buried utilities  
Evaluating utilities involves generating an acoustic or seismic source signal, communicating the source signal to a first underground utility, moving a receiver through a second underground...
8982667 Acoustic telemetry stacked-ring wave delay isolator system and method  
A stacked-ring, slow-wave acoustic telemetry isolation system and method for use with tubular assemblies such as drillpipe or production tubing comprising an acoustic wave transmitter, the...
8981586 Systems and methods to harvest fluid energy in a wellbore using preloaded magnetostrictive elements  
A magnetostrictor assembly (100) includes a magnetostrictor element (105), a conductor coupled to the magnetostrictor element, and a bluff body (101) coupled to the magnetostrictor element via a...
8976017 Method for inspecting down hole drilling systems for flaws using ultrasonics  
A method for inspecting down hole drilling systems for identifying indications of flaws in material. The method can include removing particulate, disposing a wave coupling medium on an area of...
8950480 Downhole tool delivery system with self activating perforation gun with attached perforation hole blocking assembly  
A downhole tools deployment apparatus is disclosed. In an embodiment, the apparatus includes at least an in-ground well casing, a housing providing a hermetically sealed electronics compartment, a...
8953412 Method and assembly for determining landing of logging tools in a wellbore  
An assembly using an onboard controller employs sensors to precisely determine the landing status of downhole logging tools. A control algorithm of the onboard controller can enable an intelligent...
8902077 Subsea communication system and technique  
A subsea communication system is used to communicate between a position that is proximal to a surface of the sea and an apparatus of the seabed. The subsea communication system includes an...
8893822 Apparatus and methods for real time communication between drill bit and drilling assembly  
An apparatus and method of performing a wellbore operation. The apparatus includes a drill bit that has a cavity at an end thereof and a communication device placed in the cavity. The...
8890710 Method and system of an electromagnetic telemetry  
An electromagnetic telemetry repeater. At least some of the illustrative embodiments are methods comprising inducing an electrical signal along a metallic tubular (the electrical signal carrying...
8872670 Compliance telemetry  
A communication system for communicating information with a compliant medium is disclosed, the communication device includes a constrained fluid, a valve, a modulator, a sensor and a demodulator....
8789620 Method and apparatus for transmitting or receiving information between downhole equipment and surface  
The invention provides a method of receiving and/or transmitting information in a well drilled in a geological formation between a first location and a second location, the well comprising a...
8750075 Acoustic transceiver with adjacent mass guided by membranes  
An acoustic transceiver assembly including a housing, an oscillator, and at least one membrane. The housing has at least one inner wall defining a cavity. The housing also has a first end and a...
8704677 Reliable downhole data transmission system  
A downhole signal transmission system provides electric radiofrequency signals that are coupled to electrically conductive or non-conductive fluids through electrical insulators. A plurality of...
8639186 Telemetry conveyed by pipe utilizing specks  
Drill pipe segments, communication systems, and methods of manufacturing pipe segments usable for communicating data wirelessly between sensors and tools placed in an oil and/or gas well are...
8634273 Acoustic telemetry system using passband equalization  
An embodiment includes a method comprising transmitting and receiving an acoustic signal that is modulated along a jointed tubing. The acoustic signal may be transmitted in multiple passbands of...
8605548 Bi-directional wireless acoustic telemetry methods and systems for communicating data along a pipe  
A bi-directional acoustic telemetry system is presented for communicating data and/or control signals between a first modem and a second modem along tubing. The system includes a communication...
8594572 Wireless electric power transmission through wall  
An apparatus for wirelessly transmitting electric currents walls. The walls may be bulkhead compartment walls of a fixed structure or a vehicle or the like. The apparatus includes a wireless...
8570832 Variable throat venturi flow meter having a plurality of section-varying elements  
An acoustic transceiver assembly including a housing, an oscillator, and a blocking element. The housing has at least one inner wall defining a cavity. The cavity has a first end and a second end...
8561697 Downhole tool delivery system with self activating perforation gun  
An apparatus for use in deployment of downhole tools is disclosed. Preferably, the apparatus includes at least an in-ground well casing, a housing providing a hermetically sealed electronics...
8559272 Acoustic logging while drilling tool having raised transducers  
An acoustic logging while drilling tool includes an acoustic transmitter and a linear array of acoustic receivers. At least one of the transmitter and the linear array of receivers is deployed on...
8502696 Dual wellbore telemetry system and method  
A method of signal processing includes providing at least a first pressure sensor and a second pressure sensor spaced in a drilling system and using an algorithm to separate the downwardly...
8472282 Method and apparatus for acoustic data transmission in a subterranean well  
The disclosure describes a method and apparatus for effectively communicating data along an acoustic transmission path. The method comprises driving an acoustic transmitter to send a data signal...
8437220 Parallel-path acoustic telemetry isolation system and method  
An acoustic telemetry isolation system and method for use with tubular assemblies such as drillpipe and production tubing includes an acoustic wave transmitter and an acoustic isolator. A “down”...
8369667 Downhole cable  
Downhole cables are described that are configured to protect internal structures that may be detrimentally impacted by exposure to the downhole environment, by protecting such structures by at...
8284075 Apparatus and methods for self-powered communication and sensor network  
A measurement and communication system for use with a tubular string, comprises a tubular string having a plurality of self-powered, autonomous telemetry stations disposed at predetermined...
8272439 Downhole tool delivery system with self activating perforation gun  
An apparatus for use in deployment of downhole tools is disclosed. Preferably, the apparatus includes at least an in-ground well casing, a housing providing a hermetically sealed electronics...
8270251 Acoustic isolator  
An acoustic isolator for use with tubular assemblies such as drillpipe or production tubing comprising an acoustic wave transmitter, the acoustic isolator comprising, in series connection, an odd...
8243550 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...
8242928 Reliable downhole data transmission system  
A downhole signal transmission system provides electric radiofrequency signals that are coupled to electrically conductive or non-conductive fluids through electrical insulators. A plurality of...
8193946 Training for directional detection  
Acoustic telemetry devices and methods that provide directional detection. In one embodiment, a disclosed acoustic telemetry device comprises at least two acoustic sensors and an electronics...
8179279 Method and device for producing hydrocarbons using wireless communication  
A subsea production system adapted for wireless communication so that production tree operation can be controlled locally wirelessly from a workover umbilical or remotely controlled vehicle. The...
8179278 Downhole communication devices and methods of use  
A downhole communication device comprises a first energy harvesting device; a downhole transceiver in communication with the first energy harvesting device; an accumulator in communication with...
8162051 Downhole tool delivery system with self activating perforation gun  
An apparatus for use in deployment of downhole tools is disclosed. Preferably, the apparatus includes at least an in-ground well casing, a housing providing a hermetically sealed electronics...
8164980 Methods and apparatuses for data collection and communication in drill string components  
A drill string component includes a box-end and a pin-end. Each end includes a signal transceiver, which are operably coupled together. Each signal transceiver communicates with another signal...
8134476 Apparatus and methods for self-powered communication and sensor network  
A system for communicating between a first location and a second location comprises a jointed tubular string having a first section and a second section connected at a connection joint, with the...
8111171 Wellbore telemetry and noise cancellation systems and methods for the same  
A method of signal processing includes providing at least a first pressure sensor and a second pressure sensor spaced in a drilling system and using an algorithm to separate the downwardly...
8090227 Purging of fiber optic conduits in subterranean wells  
Purging of fiber optic conduits in subterranean wells. A downhole optical sensing system includes an optical line, at least two tubular conduits, one conduit being positioned within the other...
8064289 Measuring device for a drilling apparatus  
A measuring device for a drilling apparatus which comprises a series of drilling rods, rotary and axially mobile. The measuring device comprises sensors, disposed on the series of rods, and feed...
8037934 Downhole tool delivery system  
An apparatus for use in deployment of downhole tools is disclosed. Preferably, the apparatus includes at least an in-ground well casing, a housing providing a hermetically sealed electronics...
8040249 Acoustic telemetry transceiver  
One embodiment includes an apparatus that includes a piezoelectric transducer to generate an acoustic signal that is to modulate along a mandrel, wherein the piezoelectric transducer includes at...
8040755 Wired pipe depth measurement system  
A method and apparatus for estimating a change in length of a wellbore conveyance device in a wellbore. A reference signal is sent along a first path and a wellbore signal having a phase...
8022840 Telemetry transmitter optimization using time domain reflectometry  
A method for enhancing downhole telemetry performance comprising enhancing a signal in order to offset signal-to-noise ratio reduction with increasing measured depth, wherein the signal is...
8013756 Estimation of properties of mud  
Measurements made with at least two sensors (flow rate or pressure) during generation of a message concurrently with operation of a noise source are used to estimate a channel transfer function....
8009059 Downhole power generation and communications apparatus and method  
Apparatuses and methods to power and communicate with downhole sensors are presented. Preferred embodiments of the present invention includes energizing a downhole sensor with a surface pressure...
8004421 Wellbore telemetry and noise cancellation systems and method for the same  
A method of signal processing includes providing at least a first pressure sensor and a second pressure sensor spaced in a drilling system and using an algorithm to separate the downwardly...
7990282 Borehole telemetry system  
An acoustic telemetry apparatus and methods for communicating digital data from a down-hole location through a borehole to the surface or between locations within the borehole are described...
Matches 1 - 50 out of 238 1 2 3 4 5 >