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WO/2004/072793A2 |
A method and a downhole telemetry system using discrete multitone modulation and adaptive filtering. The downhole telemetry system includes a downhole transmitter, a cable, and a surface receiver coupled to the downhole transmitter via t...
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WO/2004/070425A1 |
A method for computing, complexity, confidence and technical maturity indices for the evaluation of a reservoir is disclosed (220). The method comprising the steps of making estimates of reservoir components which are associated with a s...
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WO/2004/069960A2 |
Methods and systems for reservoir targeting, the systems implementing methods comprising filtering a plurality of values in a three-dimensional model to eliminate values which are below a threshold to create a filtered three-dimensional ...
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WO/2004/068176A1 |
The invention relates to a method for determination of the zones of a stratified porous medium the physical properties of which are known, within which the front or interface between fluids located within the medium and injected flushing...
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WO/2004/068169A1 |
A seismic communication system suitable to communicate information to an underground device (150) is disclosed. A seismic source (110) (preferably on or near the surface of the earth) generates a timed series of seismic shots. These shot...
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WO/2004/061269A1 |
A communication system for down hole use and comprising a drill collar (101) comprising a first portion (103) and a second portion (105) separated from each other by an electrically insulating material (67) and means (22, 63, 77, 81) for...
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WO/2004/057375A1 |
Methods and systems are disclosed for processing data used for hydrocarbon extraction from the earth. Symmetry transformation groups are identified from sampled earth structure data. A set of critical points is identified from the sample...
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WO/2004/053529A1 |
This invention relates to methods for calibrating a formation permeability model with respect to data obtained from fluid flow measurements. A method according to the invention includes determining a correlation coefficient for a porosit...
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WO/2004/051048A2 |
The specification discloses a mud pulse telemetry technique that uses a number of bits per interval based on parameters of the pulse position modulation system in order to reduce data transfer time in a pulse position modulation system. ...
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WO2004029665B1 |
A method for determining formation resistivity anisotropy in a wellbore environment. The method of the present invention effectively extends the dynamic range of the existing well logging service of the multi-component induction tool, al...
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WO/2004/044620A1 |
An apparatus (2) for detecting ferromagnetic objects in the vicinity of a magnetic resonance imaging scanner. The apparatus comprises primary sensor means (4; 44) adapted to measure a magnetic field, arranged in communication with signal...
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WO/2004/033844A2 |
Making measurements with a main borehole and a microborehole extending from the main boehole into the formation, is performed with sensing devices positioned to measure at zones located in the microborehole. One or more packers can be in...
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WO/2004/033852A1 |
A system and method for communicating information between downhole equipment in a wellbore and surface equipment, comprising a first device disposed in a wellbore for receiving at least one first signal and transmitting at least one seco...
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WO2003098266A9 |
A compression scheme for reducing the amount of data that must be transmitted uplink from a formation TSD testing while drilling apparatus (40). Periodic samples are taken within the formation test apparatus (45), and prior to transmitti...
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WO/2004/032344A2 |
Methods and apparatus for conserving battery energy used in transmitting signals carrying data from a downhole location, using a transmission system where a predetermined set of data is to be transmitted once during a predetermined perio...
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WO/2004/027677A1 |
A system (804), method and computer program product (204, 208, 816) for source area contamination (300) data acquisition (806), analysis and processing. The invention leverages and expands direct sensing technology, knowledge and experie...
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WO/2004/022916A1 |
A surface mud pipeline system is described with a mechanical acoustic filter (1245) tuned to a predetermined frequency band so as to attenuate pump noise (132) within this band. The filter can be combined with a Venturi constriction to p...
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WO/2004/013574A2 |
An environmentally mitigated navigation borehole system 16 mounted inside a thermal isolating temperature oven chamber 32 with the internal measurement unit including gyroscopes and accelerometers and a temperature control system includi...
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WO/2004/013573A2 |
An omnidirectional borehole navigation system is provided which features a housing (32) for traversing a borehole (18); a gimbal system (34) including at least one outer gimbal connected to the housing and at least one inner gimbal neste...
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WO/2004/008388A1 |
A system, method and apparatus are provided for applying templates to find deposits of oil and natural gas. A personal computer is used to perform calculations on known data to generate hyperdimensional templates (530) that are stored wi...
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WO/2004/008180A2 |
The present invention is a method, system, and apparatus for visually displaying digitized information in a way that allows a human operator to detect easily patterns and characteristics within the data. A personal computer (3500) is use...
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WO/2004/008338A1 |
An apparatus, system, and set of methods are provided for building templates that can be used in the exploration and production oil and gas deposits. A personal computer (160) is used to perform calculations on known data (184) to genera...
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WO/2004/008384A1 |
An apparatus and method for analyzing known data (102), and storing the known data in a pattern database ('PDB') as a template (202, 204, 206, 208, 210) is provided. Additional methods are provided for comparing target data against the t...
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WO/2004/008389A1 |
An apparatus and method for analyzing known data, storing the known data in a pattern database ('PDB') as a template is provided. Additional methods are provided for comparing new data against the templates in the PDB. The data is stored...
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WO/2004/005966A1 |
A downhole electromagnetic telemetry system with an increased data rate is disclosed. In one embodiment, a PSK data transmission system is used to transmit data in a downhole electromagnetic telemetry system for Measure While Drilling (M...
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WO/2004/003329A2 |
The present invention includes an apparatus and method for telemetry communication with oil-well monitoring and recording instruments located in the vicinity of the bottom of gas or oil recovery pipes. Such instruments are currently moni...
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WO/2004/003594A1 |
A method for geographical surveying includes the steps of determining an observation grid (24) comprising observation points (22) above a solution (16) volume in the ground; making gravitational measurements at the observation points (22...
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WO/2004/001455A1 |
A data acquisition system for gathering geophysical data, a corresponding method, and a data acquisition unit for use with the system and method are disclosed. The system (10) comprises a plurality of data acquisition units (14) for gath...
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WO/2003/107253A1 |
A method of generating a plurality of simulation results adapted for display on a display device including generating a plurality of model realizations of representing an architecture of a fluvial reservoir to a plurality of rock classif...
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WO/2003/100463A1 |
A system and method of modeling a geological body in a contemporary formation is presented that includes constructing a geologic object based on an original depositional paleo-space associated with the contemporary formation, and transfo...
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WO/2003/096073A1 |
A method and system for data transmission where data is encoded in a number of messenger modules (90) that are physically transported by a natural or artifically created fluid flow (88) or in a slurry from one location (94) to one or mor...
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WO/2003/093872A1 |
A method of acoustic telemetry in a drill string in a wellbore, comprises transmitting an acoustic signal related to a parameter of interest from a transmitting location into the drill string. The signals propagated through the drill str...
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WO/2003/090311A2 |
A measuring while drilling system (28) typically has a metal pipework (16) extending underground connected to an antenna (26a). The metal pipework (16) and the antenna (26a) are both connected to a type of downhole equipment. The antenna...
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WO2002033443A9 |
A system and method of mapping underground utilities and other subsurface objects involves one or more of acquiring utility location data using a number of different detectors and sensors, processing the multiple detector/sensor output d...
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WO/2003/078942A2 |
A fishing (22) with magnet (32, 34) and method for retrieving stray radioactvive bullets (18a, 18b, 20, 21)from aborehole (12) in a subterranean formation (14) after firing radioactive marker bullets (16) from perforating gun (28) in the...
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WO/2003/067018A2 |
The drilling system includes a work string (20) supporting a bottom hole assembly (310). The work string including lengths of pipe having a non-metallic portion. The work string includes a composite coiled tubing (320) having a fluid imp...
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WO/2003/065013A1 |
Time lapse seismic measurements of a laminated reservoir (401) including sands and shale are processed to determine changes in the laminated reservoir (403). An initial petrophysical model is obtained at a well bore from measurements mad...
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WO/2003/054587A1 |
Measurements made by a cross-dipole acoustic logging tool in a borehole are processed to determine the principal directions of azimuthal anisotropy of a subsurface formation. Measurements such as in data tracks (601, 603) are also made f...
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WO/2003/052388A1 |
A useful method and system for estimating LFG generation and gas permeability in a landfill or other subsurface-gas producing body of material is provided. The gas generation rate in a portion of a landfill or other subsurface-gas produc...
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WO/2003/050570A1 |
The invention relates to a method of correlating two or more overlapping well logs generated by a well logging device which, in use, is positioned in a well and is mounted to an elongate member extending along the well to the surface, mo...
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WO/2003/050376A2 |
A downhole telemetry system that transmits a burst-QAM uplink signal to the surface of the well is disclosed. In a preferred embodiment, a downhole instrument coupled to a pair of conductors in a wireline or composite tubing string trans...
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WO/2003/038730A1 |
Methods of characterizing subsurface conditions in a selected geographic region (14) previously associated as a whole with a specific subsurface material characteristic reference profile such as from a USDA-NRCS soil survey. The method i...
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WO/2003/033875A1 |
Method systems and apparatus for signalling within pipelines. The systems methods and apparatus make use of a unit locatable within a tubular piece of metallic structure for the transmission and/or reception of signals. The unit includes...
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WO/2003/032016A1 |
A subsurface formation petrophysical evaluation method including: determining formation porosity and permeability using a quantitative indication of formation composition; estimating water-filled formation resistivity using the formation...
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WO/2003/029614A2 |
A measuring tool for measuring for example the pore pressure, from a cased hole is disclosed. A holder (7, 18, 23) is attached to the outside of the casing (4), in which a sensor (8) capable of measuring a physical property is mounted an...
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WO/2003/027717A1 |
A sonde and an apparatus for the deployment thereof against a well casing is described, the sonde comprising a resilient C-shaped member (22) and at least one sensor (23)
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WO2002014907A9 |
The present invention provides an apparatus and method for minimizing movement of a drill string during MWD with vibration-sensitive instruments comprising conveying a drill string into a borehole with a sensor mounted on the drill strin...
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WO/2003/019237A1 |
In one embodiment the invention comprises a system (10) for generating an image of an Earth formation surrounding a borehole (14) penetrating the formation. Resistivity of the formation is measured using a DC measurement (44, 45, 46, 38,...
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WO2002068797B1 |
An anti-plugging oscillating shear valve system for generating pressure fluctuations in a flowing drilling fluid comprising a stationary stator and an oscillating rotor, both with axial flow passages. The rotor (103) oscillates in close ...
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WO/2003/014769A1 |
An electromagnetic borehole telemetry system providing improved signal to noise ratio. Adaptive filters (74) use noise channels (68) as references to remove noise from the signal channel (66). Directional detectors provide a signal chann...
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