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WO/2015/084402A1 |
Techniques for controlling a bottom hole assembly (BHA) in a wellbore include determining a model of BHA dynamics; determining a predicted wellbore trajectory, based on the model of BHA dynamics; and determining an uncertainty of the pre...
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WO/2015/084401A1 |
Techniques for controlling a bottom hole assembly (BHA) to follow a planned wellbore path include determining sensor measurements from the BHA; determining a model of BHA dynamics based on the sensor measurements from the BHA; determinin...
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WO/2015/084447A1 |
A system and method for showing heterogeneity of a porous sample by evaluating the porous sample to generate a digital core image, performing segmentations on the digital core image using multiple approaches to obtain a segmented volume,...
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WO/2015/084405A1 |
Techniques for controlling downhole drilling equipment include determining a nominal model of downhole drilling dynamics based on sensor measurements from the downhole drilling equipment; determining an uncertainty for the nominal model ...
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WO/2015/080711A1 |
A method of predictive modeling of a treatment fluid comprises: determining the value of properties of a base fluid and insoluble particulates; providing a proposed suspending agent; performing a first calculation of the suspendability o...
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WO/2015/080736A1 |
The invention concerns a computer implemented method for underbalanced drilling. In one embodiment, the method includes determining a plurality of gas injection rate versus bottom hole pressure curves for a plurality of liquid injection ...
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WO/2015/076779A1 |
Methods include: forming a first mud filtercake with a first mud; and determining a relationship between an impinging jet of a fluid at varying pressures against a surface of the first mud filtercake to a first erosion characteristic of ...
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WO/2015/073167A1 |
In accordance with one aspect of the present technique, a method is disclosed. The method includes receiving sensor data from a first set of sensors (218, 220, 222) mechanically coupled to a first riser joint (130, 132, 134) of a marine ...
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WO/2015/073500A1 |
A method for identifying and predicting well pressure control events includes pumping fluid into a wellbore and collecting fluid returning from the wellbore. A first parameter related to a rate of flow of fluid pumped into the wellbore i...
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WO/2015/073387A1 |
A method for optimizing wellbore pipe tripping operation includes entering into a computer parameters related to a maximum safe pipe movement speed within the wellbore along at least one selected depth interval along the wellbore. A maxi...
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WO/2015/073497A1 |
A method for optimizing drilling includes initializing values of a plurality of drilling operating parameters and drilling response parameters. In a computer, an initial relationship between the plurality of drilling operating parameters...
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WO/2015/073012A1 |
A disclosed method includes outputting, by an electrical component residing in a downhole tool, a clocked digital output. The method also includes adjusting, by a variable impedance circuit external to the electrical component, an impeda...
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WO/2015/073687A1 |
Unmanned aerial vehicles (UAVs) for well monitoring and control are described. Example UAVs include drones, copters, and stationary or mobile airships. An example UAV includes an airborne controller that can retrieve data from a wireless...
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WO/2015/067131A1 |
A method for controlling impact energy of a rock drilling system according to the propulsive force, the method comprising the following steps: S1, if the propulsive force is less than or equal to a set lower limit A1, then the impact ene...
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WO/2015/069738A2 |
Present embodiments are directed to a control system including a controller configured to regulate a drilling fluid flow through a pipe element during installation of the pipe element into a wellbore or removal of the pipe element from t...
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WO/2015/065982A1 |
Systems, devices, and methods for evaluating cuttings entrained in a downhole fluid in a borehole intersecting an earth formation. Methods may include using at least one sensor to produce information responsive to a reflection of an emit...
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WO/2015/065311A1 |
Drilling system and methods may employ a weight-on-bit optimization for an existing drilling mode and, upon transitioning to a different drilling mode, determine an initial weight-on-bit within a range derived from: a sinusoidal buckling...
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WO/2015/065883A1 |
A method for directional drilling a subterranean borehole includes transforming surface sensor measurements from time domain sensor data to frequency domain sensor data. A rotary drilling parameter may be changed when a parameter of the ...
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WO/2015/066465A1 |
A method for reducing drill tubular vibrations includes: constructing a mathematical model the drill tubular having mass distribution, material stiffness and material damping; constructing an equation of motion of the drill tubular in on...
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WO/2015/061106A1 |
Apparatuses, systems, and methods for controlling slide drilling on a drilling rig are described. The methods include detecting current differential pressure of a mud motor and/or weight on bit (WOB) at a surface of a borehole, predictin...
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WO/2015/061300A1 |
A method of facilitating a drilling operation includes: receiving a current set point for a drilling operation, the current set point indicating a value of an operational parameter at which the drilling operation is being performed; rece...
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WO/2015/061050A1 |
A technique facilitates evaluation of a tool, such as a drill tool. The technique comprises collecting tool data via a sensor on a given tool during use of that tool in a given operation, e.g. drilling operation. Additional data related ...
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WO/2015/057222A1 |
Methods for analyzing sag in a section of a wellbore may utilize computational methods that produce sag profiles, which may be useful in performing further wellbore operations. The computational method may include inputs of at least one ...
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WO/2015/057642A1 |
Systems, methods, and computer programs for monitoring a drilling operation in a subterranean formation include receiving, from a first sensor array, one or more signals caused, at least in part, by the fracturing operation in the subter...
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WO/2015/054388A1 |
Systems, methods and devices for evaluating a condition of a downhole component of a drillstring. Methods include estimating a value of a tool parameter of the component at at least one selected position on the drillstring; and using the...
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WO/2015/054330A1 |
An automated drilling rig control system in which one or more intelligent algorithms are in two-way communication with a rig control system and are configured to provide continuous external control over the a rig control system includes ...
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WO/2015/054155A1 |
Systems and methods for automated workflow capture in a drilling application are provided. The interactions between a user and the drilling application are automatically tracked via a graphical user interface (GUI) of the drilling applic...
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WO/2015/053747A1 |
In one example, an integrated well survey management and planning tool is implemented by a computer system. The tool can receive survey data describing a well being drilled from a surface to a subterranean geological target to be reached...
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WO/2015/053748A1 |
In one example, an integrated well survey management and planning tool is implemented by a computer system. The tool can receive a trajectory of a proposed well from a surface to a subterranean geological target to be reached by drilling...
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WO/2015/053784A1 |
A system and method for estimating properties of a hydrocarbon-producing formation includes varying the pressure in one or more first wellbores and analyzing the effect of the pressure variations in one or more second wellbores. The anal...
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WO/2015/050660A1 |
A system, method and apparatus for controlling a downhole operation is disclosed. A tool is operated to perform the downhole operation at a selected downhole location using a first value of an operation parameter of the tool. A magnetost...
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WO/2015/050985A1 |
Methods, computer-readable media, and systems are disclosed for applying 1D processing in a non-1D formation. In some embodiments, a 3D model or curtain section of a subsurface earth formation may be obtained. A processing window within ...
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WO/2015/050563A1 |
The disclosed embodiments include a method, apparatus, and computer program product for monitoring underbalanced drilling operations. For example, one disclosed embodiment is a system that includes at least one processor and at least one...
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WO/2015/051027A1 |
Rock strength is estimated during drilling using a rate of penetration model or a modified mechanical specific energy models. The rock strength estimate can be used in conducting further drilling, for example by a drilling system. Drilli...
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WO/2015/048760A1 |
A computer system and method of simulating the behavior of an oil and gas reservoir including movement of the steam-bitumen interface during oil production using the Steam Assisted Gravity Drainage (SAGD) technique. A system of equations...
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WO/2015/047256A1 |
A disclosed method includes measuring properties of a formation with a logging tool disposed in a borehole. The method also includes acquiring measurement data corresponding to the measured properties of the formation. The method also in...
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WO/2015/042103A1 |
A method for performing a field operation of a field having a subterranean formation. The method includes analyzing, by a computer processor, a plurality of training well logs of a plurality of training wells in the field to generate a p...
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WO/2015/041632A1 |
A method for estimating an axial force transfer efficiency of a drillstring in a borehole includes lifting the drillstring so that the drill bit is off the bottom of the borehole, measuring a hook load, slacking off a first reference amo...
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WO/2015/042347A1 |
A method of determining an optimal value for a control of a drilling operation is provided. Drilling data from a drilling operation is received. The drilling data includes a plurality of values measured for each of a plurality of drillin...
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WO/2015/041805A1 |
A converterless motor-driven pump system includes an off-grid prime mover. The off-grid prime mover has a rotational driveshaft and operates in response to a throttle control command to control a rotation speed of the rotational drivesha...
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WO/2015/042132A1 |
A method for estimating drilling parameters for drilling a borehole in the earth includes: drilling the borehole with a drill string having a mud motor and a drill bit; constructing a mathematical model of a system including the drill st...
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WO/2015/041800A1 |
In some aspects, response data from an injection test of a subterranean region are received during an injection treatment of the subterranean region. The injection treatment is modified based on the response data. In some instances, the ...
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WO/2015/041635A1 |
A disclosed example embodiment of a constant velocity device positionable in a well bore includes a continuously-variable transmission, including an input race coupled to a rotational power input shaft, an output race, and a plurality of...
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WO/2015/038505A1 |
Methods of evaluating a downhole fluid with a downhole tool. The downhole tool is positionable in a wellbore penetrating a subterranean formation, and has a probe positionable adjacent a wall of the wellbore and pumps, the probe having a...
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WO/2015/039090A1 |
A method for determining a volume of a constituent(s) in a geological formation may include generating an equation of state based upon log measurements for the geological formation, with the equation of state providing a correlation betw...
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WO/2015/034516A1 |
Methods and systems for monitoring material loss in a downhole environment arising from corrosion and/or erosion include placing a downhole sensor in a borehole. The resistance of the downhole sensor is measured using a four-probe resist...
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WO/2015/035105A1 |
A method, apparatus, and program product model an oilfield asset by selecting, for each of multiple sectors of the oilfield asset, a sector model from among a collection of sector models, building a multi-resolution integrated asset mode...
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WO/2015/035174A1 |
A system for field selecting drill bit includes a server having a computing processor with functionality to perform: receiving a first simulation request, executing a first simulation to generate a first set of performance data, receivin...
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WO/2015/031519A1 |
In some aspects, techniques and systems for simulating well system fluid flow are described. Multiple subsystem models each include fluid flow variables and represent well system fluid dynamics associated with a sub-region in a subterran...
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WO/2015/031533A1 |
An injection treatment on a subterranean zone is simulated by modeling physically separate rock blocks of the subterranean zone by separate block models. The block model for each physically separate rock block represents intra-block mech...
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