Matches 1 - 50 out of 155 1 2 3 4 >
Match Document Document Title
7385523 Apparatus and method for downhole well equipment and process management, identification, and operation  
A method for operating a downhole tool. The method includes moving an instrument through a wellbore, and the instrument includes a first non-acoustic transponder that is adapted to detect...
7364007 Integrated acoustic transducer assembly  
Acoustic transducers configured with integrated electronics technology are adapted to digitize signal data close to the transducer. The transducers are packaged with a reduced number of elements...
7363971 Method and apparatus for maintaining a multi-chip module at a temperature above downhole temperature  
Methods and systems for operating integrated circuits at temperatures higher than expected ambient temperatures. The heating may be of entire circuit boards, portions of the circuit boards (such as...
7350569 Separable plug for use in a wellbore  
The invention generally relates to an apparatus and a method for conveying and operating tools in a wellbore. In one aspect, a method of performing an operation in a wellbore is provided. The...
7350568 Logging a well  
A method for logging a well. Includes receiving energy with at least one array of elements coupled to a drill bit, wherein the at least one array of elements functions as an electronic array. An...
7342217 System for the measurement and data acquisition for optical fiber sensors  
A system for the measurement and surface data acquisition for optical fiber sensors containing Bragg gratings for the sensing of physical parameters originated from a set of oil wells, the system...
7331386 Anchor arm for seismic logging tool  
A borehole seismic acquisition tool configured for release from a stuck position within a borehole having a tool body with at least one sensor package, an anchoring arm, and anchoring arm linkage...
7311143 Method and apparatus for generation of acoustic shear waves through casing using physical coupling of vibrating magnets  
The method and apparatus of the present invention provides for inducing and measuring shear waves within a wellbore casing to facilitate analysis of wellbore casing, cement and formation bonding....
7303009 Method to detect low salinity injection water encroachment into oil formations  
This invention relates to the field of water flood monitoring in low saline water environment in a subterranean formation. In particular, the method of the invention relates to detecting the...
7284605 Apparatus and methods for reducing stand-off effects of a downhole tool  
A method for reducing stand-off effects of a downhole tool includes disposing the downhole tool in a borehole, wherein the downhole tool comprises at least one moveable section disposed between an...
7283061 Method and system for performing operations and for improving production in wells  
A method for performing operations and for improving production in a well includes the steps of: providing radio identification devices at known locations in the well, and providing a reader device...
7273097 Formation characterization using wellbore logging data  
Methods for determining formation characteristics comprising establishing baseline casing conditions for a string of casing disposed within a wellbore in a formation and measuring updated casing...
7228903 Apparatus and method for wireline imaging in nonconductive muds  
A pad mounted resistivity imaging device includes at least one transmitter and two or more arrays of receivers. Analysis of the received signals is done using either amplitude and phase differences...
7201221 Wellbores utilizing fiber optic-based sensors and operating devices  
This invention provides a method for controlling production operations using fiber optic devices. An optical fiber carrying fiber-optic sensors is deployed downhole to provide information about...
7188672 Well string assembly  
A well string assembly includes an upper tubular well string part having upper and lower ends between which there is formed a passageway, a lower well string part having upper and lower ends, which...
7185700 Separable plug for use with a wellbore tool  
The present invention generally relates to a tool for use in a wellbore. In one aspect, a method of performing an operation in a wellbore is provided. The method includes running a selectively...
7151254 Logging tool with response invariant to changes in borehole pressure  
A logging system for measuring parameters of earth formation penetrated by a well borehole. Measurements made with the system are not adversely affected by varying pressure encountered a borehole...
7150317 Use of electromagnetic acoustic transducers in downhole cement evaluation  
A bond log device comprising a sonde, an acoustic transducer, and an acoustic receiver. The acoustic transducer is comprised of a magnet combined with a coil, where the coil is energizable by an...
7134493 Logging system for use in a wellbore  
A logging system that may be used in a wellbore formed in an earth. A tubular conduit extends from surface into the wellbore and contains a body of wellbore fluid. A logging tool string may be...
7114563 Tubing or drill pipe conveyed downhole tool system with releasable wireline cable head  
A downhole tool system comprising a side entry sub comprising a side entry adapted to receive a wireline, a cutting sub comprising a cutting apparatus, a cable head adapted to connect a downhole...
7090011 Method for operating a well jet device during repair and insulating operations and device for carrying out said method  
The inventive method consists in the following: a drillable packer provided with a channel closed by a back valve is arranged in a well; afterwards a tubing string carrying a jet pump and a stinger...
7082994 Radially adjustable downhole devices and methods for same  
A method for logging a wellbore includes actuating a positioning device to adjust the position of a module relative to a reference point or object such as a wellbore axis or proximally positioned...
7073609 Apparatus and methods for imaging wells drilled with oil-based muds  
A resistivity logging sensor for logging while drilling a well using an oil-based mud includes a sensor body; a first current injector electrode disposed on the sensor body, wherein the first...
7073582 Method and apparatus for positioning a downhole tool  
A tool positioning assembly for positioning downhole tools at desired locations within a wellbore. The current invention further provides methods for using a tool positioning assembly. The tool...
7066282 Apparatus and methods for measuring formation characteristics in presence of conductive and non-conductive muds  
Tools for investigating an earth formation in the presence of either oil-base or water-base mud include a circuit which induces current into the formation in a focused manner, and a sensor...
7059404 Variable intensity memory gravel pack imaging apparatus and method  
An apparatus and method are provided for varying an operating parameter for a nuclear gamma ray tool for evaluating the integrity of gravel packing. The gamma ray outpat intensity and area of...
7053789 Underground object locator  
A data sonde for use in horizontal directional drilling comprising a battery housing to receive a power supply from an internal battery, a connector to receive a power supply from an external power...
7017662 High temperature environment tool system and method  
In at least some embodiments, a tool may comprise a tool body and one or more tool components. The tool may further comprise tool electronics located within the tool body, wherein the tool...
6997258 Apparatus and methods for pressure compensated contact with the borehole wall  
A well logging tool includes a housing; at least one piston moveably disposed on the housing; at least one sensor disposed on the at least one piston; a pressure compensation system coupled to the...
6997257 Apparatus and method for determining the dip of an underground formation in a cased or uncased borehole  
A well logging system that has, as its goal, the collection of information normally acquired by a dip log tool based on conductivity or resistivity measurements, but with the advantages of...
6962197 Bore-hole-jet device for formation testing and a prestarting procedure for said device  
The invention relates to fluidics, in particular to jet devices for lifting various liquids, essentially for lifting petrol out of wells and for well examination. The inventive jet device comprises...
6915849 Apparatus and methods for conveying instrumentation within a borehole using continuous sucker rod  
The present invention provides an apparatus and method for conveying downhole tools within a borehole using a continuous rod. The apparatus may include a continuous rod, a downhole tool attached to...
6896056 System and methods for detecting casing collars  
A tubing conveyed casing collar locator system that detects the casing collars in a wellbore and acoustically transmits the information through the tubing to the surface where it is detected and...
6892815 Coal bed methane borehole pipe liner perforation system  
A coalbed methane borehole pipe liner perforation system comprises a plastic pipe punch that slips down inside a coalbed methane production borehole lined with a non-perforated plastic pipe. A...
6886632 Estimating formation properties in inter-well regions by monitoring saturation and salinity front arrivals  
A method and system of monitoring the movement of at least one front in an inter-well region is comprised of: providing a first well representing the origination of at least one front (such as a...
6877559 Retrieving a sample of formation fluid in as cased hole  
A method for retrieving a formation fluid sample through a cased borehole utilizing a sampling tool. Sampling tool straddle packers are set about a first set of perforations and annular fluid is...
6847034 Downhole sensing with fiber in exterior annulus  
A portion of at least one fiber is moved into an exterior annulus of a well between a tubular structure in the well and the wall of the borehole of the well such that the portion is placed to...
6843317 System and method for autonomously performing a downhole well operation  
An autonomous system for performing a well operation at a predetermined location in a wellbore comprises a tool string having at least one well tool, a motive device for traversing the wellbore,...
6843316 Method for improving well quality  
A method of improving the quality of liquid coming from a well that has a pump and pipe assembly. The method includes identifying a region of the well that is low in contamination and a region of...
6839000 Integrated, single collar measurement while drilling tool  
An integrated, single collar measurement while-while-drilling tool is presented that comprises formation sensors, directional sensors, pressure sensors, a mud pulse telemetry device, and a...
6837314 Sub apparatus with exchangeable modules and associated method  
The present invention is an apparatus and method for use in a well borehole drilled into a formation. The apparatus comprises a work string disposed in the borehole. The work string includes at...
6827149 Method and apparatus for conveying a tool in a borehole  
A method for conveying a tool into a borehole with the use of a tool conveying apparatus includes deploying the tool conveying apparatus into the borehole, transmitting fluid through the tool...
6817412 Method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system  
A method and apparatus for communicating a desired target signal along a piping structure is provided. Because of a lossy communication path presented by the piping structure, an input signal,...
6808028 Method and apparatus utilizing NMR measurements to gather information on a property of the earth formation surrounding a wellbore  
A method is provided for gathering information on the pore pressure in an earth formation surrounding a wellbore. The method includes the initial steps of selecting at least one suitable property...
6805194 Gas and oil production  
A process for in situ gasification of mineral oil in a subterranean formation comprises running a tool having a controllable thermal device therein from a surface production facility down to the...
6793025 Double emulsion based drilling fluids  
A method of electrically logging subterranean wells using a conductive double emulsion fluid includes a miscible combination of an oleaginous fluid, an emulsifier capable of forming a...
6787505 Electrically conductive non-aqueous wellbore fluids  
A wellbore fluid having a non-aqueous continuous liquid phase that exhibits an electrical conductivity of not less than 10 μS m −1 at 1 kHz comprises a polar organic liquid (POL) which exhibits...
6776233 Method and system for drilling a wellbore having cable based telemetry  
A method and system for cable-based communication between the drilling rig and the bottom hole assembly is disclosed. A cable is provided along the outside of an upper portion of the drillstring....
6770603 Electrically conductive non-aqueous wellbore fluids  
A wellbore fluid having a non-aqueous continuous liquid phase that exhibits an electrical conductivity increased by a factor in order of 10 4 to 10 7 compared to conventional invert emulsion...
6759968 Method and apparatus for determining position in a pipe  
A method and apparatus for determining position in a pipe provides for the precise determination of location and associated characteristics of each pipe joint of a well, cross country pipeline or...
Matches 1 - 50 out of 155 1 2 3 4 >