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8180571 |
Wellbore surveying
This invention relates to surveying wellbores. In particular this invention provides methods of correcting magnetic surveys for the effects introduced by magnetic mud. The method of the present...
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8170800 |
Method and system for monitoring a drilling operation
The present invention provides a computer-implemented software tool that is adapted to listen continuously to data streams from a drilling operation and to process the data to generate a situation...
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8165815 |
Method for electromagnetic air-wave suppression by active cancellation and shielding
Method for reducing air wave and/or magnetotelluric noise in controlled source electromagnetic surveying by either shielding the source (61) from the air interface, shielding the receivers from...
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8165816 |
Fluid injection management method for hydrocarbon recovery
A method for controlling fluid injection parameters to improve well interactions and control hydrofracture geometries is provided. The method incorporates a systematic, transient analysis process...
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8150637 |
Gas lift well surveillance
Apparatuses, methods, and computer program products for evaluating the performance of a gas lift well are disclosed. A gas lift well surveillance kit is disclosed. A method for evaluating the...
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8145428 |
Assessing petroleum reservoir reserves and potential for increasing ultimate recovery
Determining a Recovery Deficiency Indicator™ (RDI™) for a petroleum reservoir provides a novel leading indicator and metric that is designed to quickly assess the potential for increases in res...
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8145462 |
Field synthesis system and method for optimizing drilling operations
A system and method for optimizing the performance of a drilling device utilizes well logs and drilling parameters from multiple offset wells located in proximity to the location of a desired...
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8141635 |
Cased borehole tool orientation measurement
Methods and related systems are described for use for determining orientation of a measurement tool in a cased borehole. The measurement tool is deployed in a cased section of a borehole. The tool...
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8121788 |
Method and system to automatically correct LWD depth measurements
A method for correcting errors in LWD depths includes performing torque and drag model analysis using drillstring weight, downhole friction, weight on bit, thermal expansion, rig heave and tide to...
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8082104 |
Method to determine rock properties from drilling logs
A method of identifying one or more rock properties and/or one or more abnormalities occurring within a subterranean formation. The method includes obtaining a plurality of drilling parameters,...
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8073623 |
System and method for real-time quality control for downhole logging devices
An illustrative embodiment of a method is disclosed for assessing image quality of a down hole formation image, the method comprising collecting acquisition system data from a plurality of sensors...
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8065085 |
System and method for measuring depth and velocity of instrumentation within a wellbore using a bendable tool
An apparatus and method for measuring depth, velocity, or both depth and velocity of instrumentation within a wellbore is provided. The apparatus includes a downhole portion movable within the...
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8060310 |
Geosteering in earth formations using multicomponent induction measurements
A multicomponent induction logging tool is used on a MWD bottomhole assembly. Multifrequency focusing that accounts for the finite, nonzero, conductivity of the mandrel is applied. Using separation...
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8060311 |
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,...
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8042624 |
System and method for improved depth measurement correction
A method for generating corrected geologic depth information is disclosed. The method includes: estimating a depth of each of a plurality of different locations along a length of a drillstring...
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8032311 |
Estimating gas-oil ratio from other physical properties
A method for characterizing a desired property of a fluid downhole is described. In some non-limiting examples, the method comprises receiving an input signal representing sound speed of a fluid...
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8019549 |
Event-based power management for seismic sensors
A method of event-based power management for seismic sensors is disclosed. The method comprises measuring seismic activity with a seismic sensor and comparing the measured seismic activity from the...
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8015868 |
Formation evaluation using estimated borehole tool position
Caliper measurements made during rotation of an imager on a logging string are processed to estimate the location of the imager, and size and shape of the borehole. A piecewise elliptical fitting...
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8011238 |
Method for correcting the measured concentrations of gas components in drilling mud
A method of characterizing formation fluid present in a subsurface earth formation during drilling using methods for correcting the measured concentrations of gas components in drilling mud. Gas...
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8005658 |
Automated field development planning of well and drainage locations
A hybrid evolutionary algorithm (“HEA”) technique is described for automatically calculating well and drainage locations in a field. The technique includes planning a set of wells on a static res...
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8005618 |
Logging while drilling system
A logging-while-drilling system for efficiently providing a reliable measurement of various petrophysical properties of subsurface earth formations. The logging-while-drilling system generally...
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7991555 |
Electromagnetic directional measurements for non-parallel bed formations
An orientation vector, referred to hereinafter as the “geosteering vector,” is directed to the more conductive formation area within the DOI of the tool and away from the more resistive for...
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7991554 |
Method for predicting rate of penetration using bit-specific coefficients of sliding friction and mechanical efficiency as a function of confined compressive strength
A method for predicting the rate of penetration (ROP) of a drill bit drilling a well bore through intervals of rock of a subterranean formation is provided based on determined relationships between...
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7979240 |
System and method for real-time monitoring and failure prediction of electrical submersible pumps
The present application relates to a system and method for real-time monitoring and failure prediction of electrical submersible pumps. The design includes generating a failure prediction value...
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7966874 |
Multi-resolution borehole profiling
Harmonics and subharmonics of acoustic measurements made during rotation of a sensor on a downhole are processed to estimate the location of the imager, and size and shape of the borehole. A...
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7970543 |
Predicting tropical cyclone destructive potential by integrated kinetic energy according to the Powell/Reinhold scale
A method of predicting the destructive capacity of a tropical cyclone based on a new Wind Destructive Potential (WDP) and Storm Surge Destructive Potential (SDP) scales which provide a manner to...
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7966569 |
Method and system and program storage device for storing oilfield related data in a computer database and displaying a field data handbook on a computer display screen
A computerized handbook known as an ‘i-Handbook’ is adapted to be stored in a memory of a computer system and displayed on a display screen of the computer system for assisting field personnel in ...
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7966166 |
Method for determining a set of net present values to influence the drilling of a wellbore and increase production
A method is disclosed for modeling a first reservoir while drilling a wellbore into a corresponding second reservoir, the first reservoir having a plurality of stations, comprising: determining a...
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7963327 |
Method for dynamically assessing petroleum reservoir competency and increasing production and recovery through asymmetric analysis of performance metrics
Methods for accurately assessing the condition of a petroleum reservoir and designing and implementing a plan of action to increase production and recovery of petroleum from the reservoir....
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7962288 |
Multiple distributed force measurements
Methods, computer programs, and systems for detecting at least one downhole condition are disclosed. Forces are measured at a plurality of locations along the drillstring. The drillstring includes...
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7962841 |
Data decoding apparatus and method in a communication system
A majority voting Viterbi decoder includes a branch metric calculator (BMC) for measuring a difference between a received symbol and a reference symbol and outputting branch metrics from the...
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7958949 |
Method and apparatus for three dimensional geosteering
A technique for drilling a borehole includes obtaining data from a tool in the borehole for a plurality of positions in the borehole that is being drilled to form acquired data indicative of...
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7957903 |
Gas trap for sampling fluid from a well
A low maintenance adjustable gas trap with a plurality of couplings, each coupling securing to a flow line of a drilling rig; a plurality of hammer unions each engaging a coupling; a plurality of...
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7957946 |
Method of automatically controlling the trajectory of a drilled well
Steering behavior model can include build rate and/or turn rate equations to modal bottom-hole assembly behavior. Build and/or turn rate equations can be calibrated by adjusting model parameters...
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7953554 |
Signal thresholding apparatus, systems, and methods
In some embodiments, an apparatus and a system, as well as a method and an article, may include selecting a plurality of signal thresholds T(i)=i*(TMAX/N) for i=2 to N comprising a positive integer...
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7937223 |
Downhole fluid analysis
A method that uses downhole fluid analysis in order to selectively collect and retain formation fluid samples in a drilling environment, as well as, control drilling using downhole fluid analysis.
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7912648 |
Method and apparatus for imaging bed boundaries using azimuthal propagation resistivity measurements
A method for imaging a geologic deposit using data collected from a borehole includes: selecting an instrument for performing electromagnetic (EM) measurements, the instrument including at least...
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7912647 |
Method and apparatus for measuring true vertical depth in a borehole
A system for measuring a true vertical depth of a downhole tool is provided. The system includes: a first optical clock located at a first depth and having a first frequency; a second optical clock...
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7899622 |
Sequential resistivity imaging with asymmetric electrode arrays
A method and instrument provide a very detailed symmetric resistivity image of a formation. A first asymmetric resistivity image is collected from a first arrangement of electrodes, which form an...
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7895052 |
Computer instructions to form an actual sales or delivery value for all components of a commingled hydrocarbon fluid stream
Computer instructions to instruct a processor to form an actual sales value or actual delivery value for all components of a commingled hydrocarbon fluid stream using mass, volume and energy, to...
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7895051 |
Method to form an actual sales or delivery value for all components of a commingled hydrocarbon fluid stream
A method to form an actual sales value or actual delivery value for all components of a comingled hydrocarbon fluid stream using a theoretical comingled hydrocarbon fluid stream molecular composition.
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7894991 |
Statistical determination of historical oilfield data
A method, system, and computer program product for performing oilfield surveillance operations. The oilfield has a subterranean formation with geological structures and reservoirs therein. The...
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7890307 |
Method and apparatus for drilling waste disposal engineering and operations using a probabilistic approach
A method for determining distribution data for a disposal domain parameter to increase assurance in a cuttings injection process, including performing a fracturing simulation using a site specific...
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7878268 |
Oilfield well planning and operation
A system for performing a drilling operation for an oilfield. The system includes a drilling system for advancing a drilling tool into a subterranean formation, a repository storing multiple survey...
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7877211 |
Downlink based on pump noise
A method for determining a drilling event includes measuring a first signal from a sensor over a first selected time interval, measuring a second signal from the sensor over a second time interval,...
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7866413 |
Methods for designing and fabricating earth-boring rotary drill bits having predictable walk characteristics and drill bits configured to exhibit predicted walk characteristics
Walk characteristics of an earth-boring rotary drill bit may be predicted by measuring locations and orientations of cutting elements thereof and calculating the magnitude and direction of an...
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7860593 |
Well prog execution facilitation system and method
A prog analysis and execution system and method. The system includes a computer control system, an interface engine in communication with the computer control system, the interface engine being...
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7860693 |
Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk
Methods and systems may be provided simulating forming a wide variety of directional wellbores including wellbores with variable tilt rates and/or relatively constant tilt rates. The methods and...
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7853045 |
Geostatistical analysis and classification of core data
A novel database and method of classifying and searchably retrieving measurement data derived from a plurality of rock core and plug sample images that are analyzed to define their principal...
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7848887 |
Making directional measurements using a rotating and non-rotating drilling apparatus
A system and method to determine directional measurements for a drilling tool that at times rotates and at other times does not rotate. The method includes making a first set of measurements when...
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