Matches 1 - 50 out of 68 1 2 >


Match Document Document Title
US20130083627 REMOTE COMMUNICATION WITH SUBSEA RUNNING TOOLS VIA BLOWOUT PREVENTER  
An acoustic modem located on a blowout preventer stack communicates with a running tool acoustic modem located on a subsea running tool disposed within a subsea wellhead, tree or tubing spool. The...
US20120039151 MUD PULSE TELEMETRY SYNCHRONOUS TIME AVERAGING SYSTEM  
Apparatus and methods for removing the effects of directional drilling systems drilling fluid pulses to allow a MWD mud pulse telemetry system to operate without interference. The methodology is...
US20140254322 Telemetry Coding and Surface Detection for a Mud Pulser  
A method for receiving an encoded integer includes acquiring a digitized waveform including a first plurality of pulses distributed among a second plurality of time slots, locating each of the...
US20110042080 DETERMINING FRACTURE ORIENTATION USING WELLBORE ACOUSTIC RADIAL PROFILES  
A method for performing field operations including obtaining a first set of acoustic radial profiles of a subterranean formation prior to induction of a fracture disposed about the wellbore,...
US20130003501 METHODS AND APPARATUS FOR LOCATING HIDDEN OR BURIED NON-CONDUCTIVE PIPES AND LEAKS THEREFROM  
Methods and apparatus for locating a hidden or buried non-conductive fluid pipe and leaks therefrom are presented in which a current signal is injected into fluid in a hidden or buried non...
US20080239872 Wireless Logging of Fluid Filled Boreholes  
A predetermined condition in a fluid-filled wellbore system can be detected by generating at least one sound in the wellbore system in response to the condition, such that a detectable change is...
US20120241167 FLOW ACTIVATED SENSOR ASSEMBLY  
A sensor assembly for detection of fluid flow signaling over a tubular conveyance. The assembly may be employed for activation of a variety of different downhole actuators such as firing heads for...
US20070189119 System and Method for Measurement While Drilling Telemetry  
A system for transmitting information in a well comprises a tubular string disposed in the well and having a drilling fluid flowing therethrough. A pulser is disposed in the tubular string and...
US20110026362 Telemetry Coding and Surface Detection for a Mud Pulser  
A method for encoding a non-negative integer, for example, representative of MWD/LWD data, includes encoding at least a portion of the integer using at least a first order Fibonacci derived...
US20140340990 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...
US20090316528 JOB MONITORING METHODS AND APPARATUS FOR LOGGING-WHILE-DRILLING EQUIPMENT  
Job monitoring methods and apparatus for logging-while-drilling equipment are disclosed. A disclosed example method includes obtaining a fluid associated with an underground geological formation,...
US20110280105 Downhole Turbine Communication  
In one aspect of the present invention a downhole drill string assembly includes a bore there through to receive a flow of drilling fluid, a signal generator that produces a signal in the drilling...
US20090016160 Estimation of Multichannel Mud Characteristics  
Separation of telemetry and noise signals in a telemetry system is accomplished by modeling the system as one in which two sources are operating simultaneously. Direct and indirect implementations...
US20150159478 GEOSTEERING BOREHOLES USING DISTRIBUTED ACOUSTIC SENSING  
A method of estimating position of a borehole includes: disposing an acoustic sensor in a first borehole in an earth formation, the acoustic sensor including a plurality of measurement locations...
US20080037369 Pressure Waves Decoupling with Two Transducers  
A telemetry system for communication in a borehole uses two spaced-apart transducers. The outputs from the two transducers are filtered to decoupled tool signals traveling in opposite directions....
US20150211358 LOCATION OF SENSORS IN WELL FORMATIONS  
Systems and methods for determining the location of sensors embedded in material surrounding a well. In an example system, at least one seismic signal generator is configured to generate a seismic...
US20080002524 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....
US20150218937 System and Method for Downhole Signal Enhancement  
A system and method for downhole signal enhancement. The system includes a downhole tool having one or more sensors coupled thereto. The one or more sensors may measure internal pressure and one...
US20100110833 PRESSURE RELEASE ENCODING SYSTEM FOR COMMUNICATING DOWNHOLE INFORMATION THROUGH A WELLBORE TO A SURFACE LOCATION  
A pressure release encoding system for communicating downhole information through a wellbore to a surface location include a downhole tool with a valve for providing a fluid restriction to fluid...
US20050115718 Flow control mechanism for a downhole tool  
There is disclosed a flow control mechanism for a downhole tool and a downhole tool incorporating the flow control mechanism. In one embodiment, a flow control mechanism (202) is disclosed for...
US20110005835 Unequal Error Protection for Embedded Coding of Borehole Images and Variable-Quality Telemetry Channels  
An unequal error protection scheme for borehole telemetry. The scheme, when applied to imaging applications, assigns more protection for the more significant bits and less protection for less...
US20110139441 SYSTEM, APPARATUS AND METHOD FOR STIMULATING WELLS AND MANAGING A NATURAL RESOURCE RESERVOIR  
The invention provides a system, method and downhole tool for stimulating a borehole of wells in reservoir. The invention allows a user to determine the type of stimulation adequate to promote...
US20130170318 DEVICE AND METHOD FOR ATTENUATING ACOUSTIC SIGNALS  
Illustrative embodiments of the present disclosure are directed to methods and devices for attenuating acoustic signals traveling within bodies. A device includes a body and at least one acoustic...
US20140036629 Downlinking Communication System And Method  
A downlinking signal is transmitted downhole from the surface using drilling fluid as the communications medium. The downlinking signal includes at least a synchronization phase and a command...
US20110286308 Downlinking Communication System and Method  
A downlinking signal is transmitted downhole from the surface using drilling fluid as the communications medium. The downlinking signal includes at least a synchronization phase and a command...
US20080259728 Method of Filtering Pump Noise  
A method of filtering out pressure noise generated by one or more piston pumps, where each pump is connected to a common downstream piping system, and where the discharge pressure is measured by a...
US20150204184 METHOD AND APPARATUS FOR SPECTRAL NOISE LOGGING  
In the present invention that considerable advantage is to be gained in the provision of apparatus and methods for spectral noise logging that exhibit improved frequency resolution and thus...
US20120106297 DOWNHOLE APPARATUS, DEVICE, ASSEMBLY AND METHOD  
A downhole assembly includes an apparatus for generating a fluid pressure pulse downhole. A disclosed apparatus for generating a fluid pressure pulse downhole includes an elongate, generally...
US20060215491 System and method for transmitting information through a fluid medium  
A preferred method for transmitting digital information through a fluid medium includes generating a first and a second pressure pulse in the fluid medium, and encoding the digital information in...
US20120090837 Acoustic Transducers With Dynamic Frequency Range  
In one aspect, an apparatus for use downhole is provided, which apparatus, in one embodiment, includes an acoustic transducer having a first member in pressure communication with a confined fluid,...
US20110286309 Downlinking Communication System and Method Using Signal Transition Detection  
A downlinking signal is transmitted downhole from the surface using drilling fluid as the communications medium. The downlinking signal includes at least a synchronization phase and a command...
US20100157735 APPARATUS FOR CREATING PRESSURE PULSES IN THE FLUID OF A BORE HOLE  
An apparatus for creating pressure pulses in the fluid of a bore hole is described. The preferred embodiment takes the form of a mud pulser apparatus (10) having a signalling valve controlled by a...
US20090034368 APPARATUS AND METHOD FOR COMMUNICATING DATA BETWEEN A WELL AND THE SURFACE USING PRESSURE PULSES  
In one aspect, wellbore apparatus is disclosed that includes a conduit that contains a non-circulating liquid therein and is configured to be placed in a well, and a transmitter that is configured...
US20100008190 Apparatus and Method for Data Transmission from a Rotating Control Device  
The present invention generally relates to an apparatus and a method of transmitting data from a rotating control device. In one aspect, a method of transmitting data from a rotating control...
US20100195442 MUD PULSE TELEMETRY DATA MODULATION TECHNIQUE  
A technique for communicating data within a wellbore is provided. In one embodiment, a method includes receiving digital data and encoding the digital data into symbols each representative of one...
US20170176243 MUD PULSE DETECTION USING DISTRIBUTED ACOUSTIC SENSING  
An example system for detecting mud pulses may include a distributed acoustic sensing (DAS) data collection system coupled to a downhole drilling system, and an information handling system...
US20170167251 FREQUENCY HOPPING SOUNDER SIGNAL FOR CHANNEL MAPPING AND EQUALIZER INITIALIZATION  
A system for channel sounding and initializing an equalizer using a frequency hopping sounder signal. The system identifies a frequency range for sounding a channel between a first device at a...
US20170167249 COMMUNICATION USING DISTRIBUTED ACOUSTIC SENSING SYSTEMS  
A system includes a distributed acoustic sensing (DAS) optical fiber configured to be disposed with a downhole component, an interrogation device including an optical signal source configured to...
US20170130578 Jam Clearing Process for Rotary Telemetry Tools  
A clearing or unjamming process utilizes bidirectional agitation and non-deterministic behavior to clear debris that is jamming a downhole rotary tool. In accordance to at least one embodiment the...
US20170089195 High-Speed Transmission of Annulus Pressure-While-Drilling by Data Compression  
A method for transmitting data from a downhole tool to a surface location includes running a downhole tool into a wellbore. The downhole tool includes a pressure sensor. An annulus pressure in the...
US20170074092 Rotary Pulsers and Associated Methods  
Exemplary embodiments of rotary pulsers are provided that include a stator and a rotor rotationally disposed adjacent to the stator. The rotary pulsers can include a regulator mechanism and a...
US20170074091 System for Communicating Data Via Fluid Lines  
The present disclosure relates generally to data communication in subsea oil and gas drilling and production operations. In particular, data communication from sensors located on a piece of subsea...
US20170058667 Mud Pulser with Vertical Rotational Actuator  
A mud pulser system for use in a wellbore includes a pulser assembly disposed in a drill string and through which drilling fluid is metered in order to generate pressure pulses in the drilling...
US20170051610 METHOD AND APPARATUS FOR GENERATING PULSES IN A FLUID COLUMN  
Methods and apparatus are disclosed for generating fluid pulses in a fluid column, such as within a well. A described example fluid pulse generator has a valve member comprising a piston that is...
US20170009574 FLUIDIC PULSER FOR DOWNHOLE TELEMETRY  
An example method includes providing fluid communication between an internal bore of a drill string and an annulus between the drill string and a borehole through a fluid channel in a side of a...
US20160356153 TELEMETRY MODULE WITH PUSH ONLY GATE VALVE ACTION  
An telemetry module includes a valve assembly having a gate defining gate valve flow ports and a valve seat defining valve seat flow ports. A first solenoid assembly is arranged on a first side of...
US20160341034 DOWNHOLE ELECTROMAGNETIC AND MUD PULSE TELEMETRY APPARATUS  
A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry...
US20160341033 METHOD AND APPARATUS FOR GENERATING PULSES IN A FLUID COLUMN  
Method and apparatus for generating fluid pulses in a fluid column, such as within a downhole well, are disclosed. A described example fluid pulse generator utilizes a moveable flow conduit...
US20160326869 Piston Design for Downhole Pulser  
A measurement while drilling (MWD) tool includes a sensor, an encoder operably connected to the sensor and a pulser operably connected to the encoder. The pulser includes a linearly acting...
US20160290128 COMPRESSED TELEMETRY FOR TIME SERIES DOWNHOLE DATA USING VARIABLE SCALING AND GROUPED WORDS  
A method for transmitting data from a downhole location to a location at the surface of the earth includes determining a minimum value and a maximum value of M-samples of data values, determining...

Matches 1 - 50 out of 68 1 2 >