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Schlumberger Technology Corporation
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Schlumberger Technology Corporation patents

Recent patent applications related to Schlumberger Technology Corporation. Schlumberger Technology Corporation is listed as an Agent/Assignee. Note: Schlumberger Technology Corporation may have other listings under different names/spellings. We're not affiliated with Schlumberger Technology Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "S" | Schlumberger Technology Corporation-related inventors

Aqueous solution and use thereof

Aqueous compositions contain hydrochloric acid at a concentration between 8 wt % and 28 wt % inclusive. The amino acid; hydrochloric acid mole ratio may be between 0.2 and 1.5. Sufficient water is present to dissolve the hydrochloric acid and the amino acid. Such compositions have utility as retarders for... Schlumberger Technology Corporation

Compositions and methods for servicing subterranean wells

Well treatment compositions comprise water, a polysaccharide and cellulose fibers. The cellulose fibers may have lengths between 100 nm and 10 mm, and diameters between 4 nm and 40 μm. The compositions may be used as spacer fluids during well cementing operations. The spacer fluids may prevent commingling of a... Schlumberger Technology Corporation

Flowback aid for fracturing fluids

Methods of fracturing a subterranean formation include introducing a fracturing fluid containing an aqueous medium, a viscosifying agent and a polyethylene oxide alkyl ether through a wellbore and into the subterranean formation, pressurizing the fracturing fluid to fracture the subterranean formation, and allowing the fracturing fluid to flow back into... Schlumberger Technology Corporation

Materials and their characterization in heterogeneous proppant placement

Methods of selection of materials that are used as a proppant for HPP fracturing treatments, also the procedure for the design of HPP treatment.... Schlumberger Technology Corporation

Stabilized pillars for hydraulic fracturing field of the disclosure

Methods of strengthening a proppant pack and resulting proppant pillar from both the inside and outside are described. Embodiments various additives to facilitate proppant/proppant interaction and modifying proppant surface to facilitate proppant interaction. Embodiments also include the use of protective coatings, some of which have embedded fibers or chemical moieties... Schlumberger Technology Corporation

Bell nipple

A bell nipple for use in an offshore wellbore operation comprising an upper tubular member and a lower tubular member connected telescopically via a slip joint, one or more pistons at the level of the radial plane which is defined by the lowest point of the side outlet and each... Schlumberger Technology Corporation

Milling tool and method

Tubing in a borehole is removed using a rotary milling tool comprising a plurality of elements projecting from or extensible from the body of the tool. The elements are distributed azimuthally around the tool body. The elements comprise cutters to remove material from the tubing and outward facing guide surfaces... Schlumberger Technology Corporation

Integrated well completions

A method includes collecting data for a borehole, designing an integrated wellbore isolation plan, the integrated wellbore isolation plan including a drilling plan and a cementing plan for the borehole, and setting zonal isolation parameters for the borehole based on the integrated wellbore isolation plan.... Schlumberger Technology Corporation

Downhole tool for measuring angular position

A downhole tool for measuring angular positions at a location within a subterranean borehole. The tool is rotatable around the longitudinal direction of the borehole. The tool includes two or more magnetometers which measure the Earth's magnetic field along respective magnetometer axes. Each magnetometer is arranged such that its measurement... Schlumberger Technology Corporation

Automatic mud pulse telemetry band selection

A method for automatically selecting a frequency band for transmission of a mud pulse telemetry signal includes transforming acquired transducer measurements from a time domain to a frequency domain to obtain a spectrum of measurements. The spectrum of measurements is processed to compute a total energy in band and a... Schlumberger Technology Corporation

Extended isenthalpic and/or isothermal flash calculation for hydrocarbon components that are soluble in oil, gas and water

A method, apparatus, and program product to determine distribution of a plurality of components amongst a plurality of phases for a multi-component, multi-phase system including a multi-component, multi-phase fluid. A plurality of phase boundaries of the multi-component, multi-phase fluid and a vapor-liquid equilibrium (VLE) are determined based on a plurality... Schlumberger Technology Corporation

Automated operation of wellsite equipment

Systems and method for controlling wellsite equipment, including pumps and a manifold having a low-pressure (LP) manifold, having LP ports with LP valves, and a high-pressure (HP) manifold, having HP ports with HP valves and bleed ports with bleed valves. The pumps are fluidly coupled with the LP manifold via... Schlumberger Technology Corporation

Seismic investigations using seismic sensor

Systems capable of seismically investigating the earth can include seismic sources and a disposable seismic sensor such as a fiber optic seismic sensor included within a drill string. The fiber optic seismic sensor can include a plurality of fiber Bragg gratings. Related methods can include using the seismic sources and... Schlumberger Technology Corporation

Multi-mode acoustic tool and method

A downhole acoustic tool and method of use are provided. The acoustic tool includes an acoustic tool body. In addition, a transmitter section located along the acoustic tool body, including four or more transmitters to be driven so as to excite multi-mode waveforms. The acoustic tool further includes an array... Schlumberger Technology Corporation

Method and system for processing sonic data acquired with a downhole tool

A method for processing sonic data acquired with a downhole sonic tool is provided. The method comprises detecting coherent noise based on a plurality of waveforms obtained from one or more receivers issued by one or more transmitters. The plurality of waveforms correspond to propagating acoustic waves in a formation.... Schlumberger Technology Corporation

Symbolic rigstate system

A method can include receiving data associated with a drilling operation in a geologic environment; determining a state based at least in part on the data; representing the state using a symbolic representation scheme that includes letters; storing the represented state in a database; and, for a combination of letters... Schlumberger Technology Corporation

Dynamic scada

A supervisory control and data acquisition (SCADA) unit and technique for managing communications over a network of defined capacity. The unit and techniques include safeguarding the network while allowing for operations to proceed at an oilfield. The safeguards allow for multiple additional and different types of equipment to be added... Schlumberger Technology Corporation

Wellbore sealant using nanoparticles

A wellbore is internally sealed using nanoparticles. Permeability properties are determined for a particular formation, along with its pore throat size distribution. A wellbore internal sealant (nanoparticle treatment fluid) is designed based on the determined permeability properties and pore throat size distribution. The nanoparticle treatment fluid is introduced into the... Schlumberger Technology Corporation

Powered sheaved with wireline pushing capability

Methods include deploying a downhole tool into a wellbore with a conveyance apparatus by mounting a tool to a distal end of a spooled conveyance apparatus, routing the conveyance apparatus around a powered sheave assembly, which includes a plurality of grooves disposed on the outer surface of the sheave to... Schlumberger Technology Corporation

Deployment coiled tubing

Methods include providing a first portion of a tool string including a tool, a deployment bar, and at least one deployment valve, where the deployment valve includes a valve therein which is operable under wellbore pressure and further comprises a fluid passageway there through. The first portion of the tool... Schlumberger Technology Corporation

Deployment valves operable under pressure

Methods for deploying a coiled tubing string into a wellbore include providing a coiled tubing having a distal end and an opposing end connected with a reel, providing a tool including a tool body, a valve operable under wellbore pressure disposed within the tool body, and a first fluid passageway... Schlumberger Technology Corporation

Method of operating a taylor-couette device equipped with a wall shear stress sensor to study emulsion stability and fluid flow in turbulence

Methods may include emplacing an emulsion into an annular region of a Taylor-Couette (TC) device; flowing the emulsion through the annular region created by a first annular surface and a second annular surface; contacting one or more shear sensors disposed on a surface of the annular region with the flowing... Schlumberger Technology Corporation

Polymeric materials

A submersible component can include a conductor; and a polymeric material disposed about at least a portion of the conductor where the polymeric material includes at least approximately 50 percent by weight polyether ether ketone (PEEK) and at least 5 percent by weight perfluoroalkoxy alkanes (PFA). A submersible electrical unit... Schlumberger Technology Corporation

Pivoting removal tool

A tool includes a shaft having a front end and a distal end; a displacement mechanism for extending and retracting the shaft; and one or more pivoting tool elements coupled to the tool shaft proximate to the distal end of the shaft, wherein the one or more pivoting tool elements... Schlumberger Technology Corporation

Bottomhole assembly

A bottomhole assembly for performing a wellbore operation comprising a plurality of full-gauge components that are each radially expandable and retractable between respective first positions and respective second positions, wherein the first positions each have a diameter which is substantially the same as that of the wellbore and wherein the... Schlumberger Technology Corporation

Shearable deployment bars with mutiple passages and cables

Apparatus for deploying coiled tubing into a wellbore include a neck portion extending between end connections, where the end connections are configured to be attached to a coiled tubing tool string, and a main flow passage, at least one secondary flow passage and at least one electrical device passageway extending... Schlumberger Technology Corporation

Deployment blow out preventer with interlock

Methods include providing a blowout preventer body having at least one sealing ram for engaging with a downhole tool, and the sealing ram is hydraulically actuatable between a ram open position and a ram closed position. A hydraulic control valve is provided and used for sensing a differential pressure across... Schlumberger Technology Corporation

Active integrated flow control for completion system

A technique facilitates active zonal control over the inflow of fluids into a lateral wellbore completion at individual well zones of a plurality of well zones. The completion may comprise a plurality of sand screens through which inflowing fluids pass before entering an interior of the completion, e.g. before entering... Schlumberger Technology Corporation

Modeling of fluid introduction and/or fluid extraction elements in simulation of coreflood experiment

A coreflood experiment may be modeled by generating a three dimensional computer simulation model of a core plug and modeling within the three dimensional computer simulation model one or both of a fluid introduction element or a fluid extraction element of a core holder used in the coreflood experiment. Once... Schlumberger Technology Corporation

Methods and systems for pressurizing harsh fluids

Methods and systems relate to a pressure exchanger which exchanges pressure energy from a high pressure clean fluid system to a relatively low pressure harsh fluid system for use in pressurizing the harsh fluid and directing the fluid to a wellbore as high pressure harsh fluid without the harsh fluid... Schlumberger Technology Corporation

Compensated sigma from measurements made by a pulsed neutron instrument

A method for determining a formation thermal neutron decay rate from measurements of radiation resulting from at least one burst of high energy neutrons into formations surrounding a wellbore includes determining a first apparent neutron decay rate in a time window beginning at a first selected time after an end... Schlumberger Technology Corporation

Diagenetic and depositional rock analysis

A method can include receiving data for a geologic environment where the data include data acquired via different types of borehole tool sensors; based at least in part on the data, determining rock composition of the geologic environment where the rock composition includes depositional components and diagenetic components; and, based... Schlumberger Technology Corporation

Enhanced oil recovery (eor) chemical coreflood simulation study workflow

A method, apparatus, and program product may generate and/or utilize a three-dimensional computer simulation model of a core plug suitable for use in a computer-implemented general purpose reservoir simulator. Simulation studies may be performed on the simulation model to establish a water base case for the simulation model, and to... Schlumberger Technology Corporation

External structure heat sink

Systems and methods for dissipating heat from an electrical component using an external structure of a trailer or shed as a heat sink are disclosed. A heat-producing electrical component such as a variable frequency drive (VFD) using an insulated-gate bipolar transistor (IGBT) is housed in a trailer and is thermally... Schlumberger Technology Corporation

Perforated membranes and methods of making the same

A method for forming a perforated membrane includes providing a mold having at least a first set of a plurality of rods extending to at least a first height from a base of the mold, introducing a curable material into the mold in an amount such that a height of... Schlumberger Technology Corporation

01/25/18 / #20180022987

Method of making rod-shaped particles for use as proppant and anti-flowback additive

A method for forming rod-shaped particles includes reducing a length of rods derived from a slurry made up of particles and a reactant, wherein the rods are in a stabilized state in which the reactant has been at least partially reacted with a coagulant, but the rods have not been... Schlumberger Technology Corporation

01/25/18 / #20180023350

Method for preventing formation of a slug flow regime of a gas-liquid mixture in a non-linear wellbore or pipeline

A method for preventing formation of a slug flow regime of a gas-liquid mixture in a non-linear wellbore or a pipeline comprises determining at least one most probable place of fluid slugs development in the wellbore or the pipeline by mathematical simulation based on expected values of the gas-liquid mixture... Schlumberger Technology Corporation

01/25/18 / #20180023374

Multi-phase polymer shear viscosity calculation in polymer coreflood simulation study workflow

An apparent viscosity of an aqueous polymer composition used in a polymer flood may be determined by generating a relative permeability interpolation computer simulation model that is associated with a capillary desaturation function and that interpolates relative permeability curves for a coreflood experiment, validating the relative permeability interpolation computer simulation... Schlumberger Technology Corporation

01/25/18 / #20180023375

Vertical drilling and fracturing methodology

A method for drilling and fracturing a subterranean formation includes drilling a substantially horizontal pilot well from a previously drilled vertical pilot well. A plurality of substantially vertical sidetracks is drilled from the horizontal pilot well. Fracturing fluid is pumped into the plurality of vertical sidetracks to hydraulically fracture the... Schlumberger Technology Corporation

01/25/18 / #20180023383

Method and system of model-based acoustic measurements for a perforated casing

A method of model-based acoustic measurements for a wellbore is disclosed. The method comprises creating an interpretation chart of acoustic measurements by a downhole tool in a wellbore using a numerical modeling and performing an evaluation with respect to the wellbore based on the interpretation chart.... Schlumberger Technology Corporation

01/25/18 / #20180023389

Formation pressure determination

A method, apparatus, and program product for determining a formation pressure for a reservoir. Measurement data for a pretest of a formation of the reservoir is received. The measurement data is analyzed to determine a last-read event and a corresponding last-read pressure. Derivative data for flow regime identification is determined... Schlumberger Technology Corporation

01/25/18 / #20180023731

Multi-layered coiled tubing designs with integrated electrical and fiber optic components

A multi-layer coiled tube is provided. The multi-layer coiled tube may include an inner coiled tube. An outer tube may circumferentially and longitudinally surround the inner coiled tube. Conductors may be positioned between the inner coiled tube and the outer tube. The conductors may include electrical conductors and fiber optic... Schlumberger Technology Corporation

01/25/18 / #20180024263

Seismic spectral balancing

A method can include receiving seismic data that has an associated bandwidth; for a number of frequency bands, for a number of frequency bands, iteratively filtering and adjusting the seismic data by applying band-pass filters to extract information associated with each of the frequency bands where the adjusting the seismic... Schlumberger Technology Corporation

01/18/18 / #20180015395

Self-cleaning filter

A self-cleaning filter includes a housing disposing a filter media having a permeable sidewall and an axial bore connected with the inlet conduit, a sleeve connected in-line with the axial bore and downstream of the inlet conduit, and a shuttle having a piston moveably disposed in the sleeve and an... Schlumberger Technology Corporation

01/18/18 / #20180016866

Nested flapper spring

A device in accordance to an embodiment includes a tubular housing having an inside diameter defining an axial bore, a top surface and an outer surface, a groove formed along the outer surface below the top surface, a flapper pivotally connected with the housing and pivotal between an open position... Schlumberger Technology Corporation

01/18/18 / #20180016867

Soft seat retention

A device, such as a valve, having a soft seat disposed in a groove formed in and circumferentially along a hard seating surface of a hard seat and one or more retaining elements disposed in the groove in contact with the soft seat and the hard seat.... Schlumberger Technology Corporation

01/18/18 / #20180016868

Revolved seat line for a curved flapper

A device, such as a valve, includes a hard seat having an axial bore extending along a central axis. A flapper pivotally connected with the hard seat at a hinge axis and pivotal between an open position to allow flow through the bore and a closed position to block flow... Schlumberger Technology Corporation

01/18/18 / #20180016870

Downhole tool with an isolated actuator

A downhole tool in accordance to aspects of the disclosure includes a housing forming a bore to convey a wellbore fluid, an actuating piston moveably disposed in a cylinder located in the housing adjacent to the bore and a barrier fluid isolating the actuating piston from the bore. The downhole... Schlumberger Technology Corporation

01/18/18 / #20180016895

Method of performing wellsite fracture operations with statistical uncertainties

A method of performing a fracture operation at a wellsite is provided. The wellsite has a fracture network therein with natural fractures. The method involves stimulating the wellsite by injecting an injection fluid with proppant into the fracture network, obtaining wellsite data comprising natural fracture parameters of the natural fractures... Schlumberger Technology Corporation

01/18/18 / #20180016897

System and determining bottomhole conditions during flowback operations of a shale reservoir

A system and method is provided that determines at least one bottomhole condition during flowback operations in a well that traverses a hydraulically fractured reservoir. The system and method measure fluid properties of fluids produced at a surface-location of the well during the flowback operations. A transient fluid flow simulator... Schlumberger Technology Corporation

01/18/18 / #20180017201

Pressurized chamber management

Apparatus and methods for filling a pressure compensated fluid container with a liquid. An example method includes restraining movement of a piston slidably disposed within the fluid container in a first piston position, wherein the piston divides the fluid container into first and second portions. The method further includes pumping... Schlumberger Technology Corporation

01/18/18 / #20180017705

Determining an optical density linear dynamic range for an optical spectrometer

A technique includes acquiring dry condition and wet measurements using an optical spectrometer for a plurality of lamp intensities. The technique includes determining candidate maximum optical densities as a function of the lamp intensities based at least in part on a reference measurement that is acquired by the spectrometer, the... Schlumberger Technology Corporation

01/11/18 / #20180010032

Compositions and methods for completing subterranean wells

Well treatment compositions comprise water, a lipophilic anionic surfactant, a hydrophilic non-ionic surfactant, a second non-ionic surfactant, a water-solubilizing solvent, a water-immiscible solvent and a lipophilic non-ionic surfactant. Optionally, a second solvent may be incorporated. When added to spacer fluids, chemical washes or both, the compositions promote the removal of... Schlumberger Technology Corporation

01/11/18 / #20180010429

Control system and flowback operations for shale reservoirs

A flowback system and method employ a flowback model that characterizes fluid properties and rock mechanical properties of the reservoir during flowback in conjunction with measurement and analysis of chemistry and solids production with respect to the flowback fluid in order to maximize efficiency during the flowback operations, while mitigating... Schlumberger Technology Corporation

01/11/18 / #20180010944

Representative sampling of multiphase fluids

A technique facilitates evaluation of a fluid, such as a fluid produced from a well. The technique utilizes a modular and mobile system for testing flows of fluid which may comprise mixtures of constituents, and for sampling fluids thereof. The multiphase sampling method includes flowing a multiphase fluid comprising an... Schlumberger Technology Corporation

01/11/18 / #20180010996

Porosimetry transition region adjustment

A method can include receiving porosimetry data for a range of pressures that spans a transition zone defined at least in part by a high-pressure end of a first pressure zone and a low-pressure end of a second pressure zone; detecting at least one artifact in the transition zone; computing... Schlumberger Technology Corporation

01/11/18 / #20180012310

Creating and executing a well construction/operation plan

A plan structure and a method for creating a plan for forming/operating a sub-sea or sub-terranean well, in an automated planner, are disclosed. The plan defines logical, sequential and conditional interrelationships between events in the plan, so that a controller can carry out the plan in a flexible and time-independent... Schlumberger Technology Corporation

01/04/18 / #20180002596

Subterranean fluids containing suspended polymer bodies

An aqueous suspension of polymer bodies is made by coalescing polymer from a flowing aqueous solution. These suspended bodies may be fibrous in appearance. However, the coalescence of the polymer bodies may be controlled to produce shapes. The coalesced polymer bodies are used for treating a downhole location within or... Schlumberger Technology Corporation

01/04/18 / #20180002985

Bi-directional drilling systems and methods

A method for removing material with a bit includes rotating a bit in a first direction, changing the rotational direction and rotating the bit in an opposing second direction. Rotation of the bit in the first direction and rotation of the bit in the second direction both remove material.... Schlumberger Technology Corporation

01/04/18 / #20180002996

Apparatus for switching off and deviating a circulating liquid flow without water hammering

An apparatus for switching off and deviating a circulating liquid flow without water hammering, comprising an apparatus body (10) including an inlet channel (11) which is split into two outlet channels (12, 13) in which respective flow valves (14, 15) are arranged; said apparatus body comprises moreover a discharging channel... Schlumberger Technology Corporation

01/04/18 / #20180003001

Downhole cutting and sealing apparatus

A downhole tool for conveyance within a tubular secured in a wellbore extending into a subterranean formation. The downhole tool includes a sealing material and a laser apparatus operable to cut a slot in the tubular. The downhole tool is operable to provide melted sealing material within the slot.... Schlumberger Technology Corporation

01/04/18 / #20180003005

Downhole shifting tool

A downhole tool includes a deactivation member, a latching member, a release member, and a biasing member. The deactivation member includes an outer protrusion. The latching member is positioned radially-outward from the deactivation member. The latching member includes an inner protrusion and an outer protrusion. The release member includes a... Schlumberger Technology Corporation

01/04/18 / #20180003023

Automated well pressure control and gas handling system and method

A method includes pumping fluid into a drill string extending through a riser into a well. A managed pressure drilling system is operated to maintain a selected fluid pressure in the well between the well and the drill string. A fluid influx into the well or a fluid loss into... Schlumberger Technology Corporation

01/04/18 / #20180003042

Downhole sensing for electromagnetic telemetry

A method for recovering data from a downhole tool in a wellbore includes measuring an electromagnetic signal using first and second sensors. At least a portion of the electromagnetic signal is transmitted by a downhole tool positioned in a first wellbore. The first and second sensors are each positioned at... Schlumberger Technology Corporation

01/04/18 / #20180003043

Real-time electromagnetic telemetry system

A method for improving a quality of data received from a downhole tool in a wellbore includes receiving a first block of data from a downhole tool in a wellbore. The first block of data represents a first measurement captured by the downhole tool during a first period of time.... Schlumberger Technology Corporation

Patent Packs
01/04/18 / #20180003044

Methods and systems for spectrum estimation for measure while drilling telemetry in a well system

A method for configuring transmission signals is disclosed. The method includes receiving a signal from a downhole tool in a wellbore. The signal may include a telemetry portion and a noise portion. The method also includes reproducing the telemetry portion based at least partially on the signal. Further, the method... Schlumberger Technology Corporation

01/04/18 / #20180003047

Systems and methods for downhole fluid analysis

The present disclosure relates to a system that includes a downhole that includes a packer module with an inlet disposed between an upper packer and a lower packer configured to seal an interval of a wellbore. The inlet is configured to admit a formation fluid disposed in the interval. The... Schlumberger Technology Corporation

01/04/18 / #20180003049

System and methods for pretests for downhole fluids

A method including positioning a downhole acquisition tool in a wellbore in a geological formation; performing a pretest sequence to gather at least one of pressure or mobility information based on downhole acquisition from a sample line, a guard line, or both while the downhole acquisition tool is within the... Schlumberger Technology Corporation

01/04/18 / #20180003171

Method for minimizing vibration in a multi-pump system

A technique for reducing harmonic vibration in a multiplex multi-pump system. The technique includes establishing a lower bound of system specific vibration-related information such as via pressure variation or other vibration indicator. Establishing the lower bound may be achieved through simulation with the system or through an initial sampling period... Schlumberger Technology Corporation

01/04/18 / #20180003174

Design and method to improve downhole motor durability

Rotor and/or stator designs and methods thereof to improve progressive cavity motor or pump durability. In one or more implementations, the rotor may have a variable outer diameter or variable stiffness along an axial length thereof. The stator may similarly have a variable inner diameter or variable stiffness, which may... Schlumberger Technology Corporation

01/04/18 / #20180003175

Liners for rotors and stators

A rotor and/or stator dampening system includes a stator and/or rotor with a liner selected of one or more materials to achieve a desired dampening effect. In one implementation, a progressive cavity motor or pump includes a stator with an internal axial bore therethrough. The stator has a liner along... Schlumberger Technology Corporation

01/04/18 / #20180003196

Fluid energizing device

Apparatus and methods for energizing well operations fluids, including a fluid energizing device directly or operatively connected between first and second conduits. The fluid energizing device includes a chamber. A first fluid enters the chamber from the first conduit, and a second fluid enters the chamber from the second conduit... Schlumberger Technology Corporation

01/04/18 / #20180003527

Sensor array noise reduction

Sensor array noise reduction is provided. Techniques involve systems and methods for reducing sensor array noise by estimating an instantaneous frequency of a coherent noise signal in a logging system. The instantaneous frequency may be estimated based on a rotation of an electric motor in the logging system, or may... Schlumberger Technology Corporation

01/04/18 / #20180003550

Gauge length optimization in distributed vibration sensing

A technique facilitates the use and application of a distributed vibration sensing system in, for example, a well application. The technique enables selection of a desired gauge length to achieve an optimum trade-off between the spatial resolution of a distributed vibration sensing/distributed acoustic sensing system and signal-to-noise ratio. The optimum... Schlumberger Technology Corporation

01/04/18 / #20180003619

Systems, methods and analysis of reservoir fluids using surface plasmon resonance

An optical sensor includes a flow cell permitting flow of a hydrocarbon-based analyte therethrough. A metallic film is disposed adjacent or within the flow cell. At least one optical element directs polychromatic light for supply to an interface of the metallic film under conditions of surface plasmon resonance (SPR) and... Schlumberger Technology Corporation

01/04/18 / #20180003629

Method and system for analyzing an earth sample of a geological formation

based on the measured spectrum and on the reconstructed spectrum, detecting a tar layer in the geological formation.... Schlumberger Technology Corporation

01/04/18 / #20180003841

Seismic attributes derived from the relative geological age property of a volume-based model

A method to model a subterranean formation of a field. The method includes obtaining a seismic volume comprising a plurality of seismic traces of the subterranean formation of the field, computing, based on the seismic volume, a seismically-derived value of a structural attribute representing a structural characteristic of the subterranean... Schlumberger Technology Corporation

01/04/18 / #20180003842

Method and determining rough sea topography during a seismic survey

A method comprising for deghosting seismic data is disclosed. The method includes the steps of acquiring seismic data by conducting a survey of a subsurface area of interest wherein the seismic data includes ghost data and estimating a time-varying wave height above the subsurface area of interest during at least... Schlumberger Technology Corporation

01/04/18 / #20180003843

Downhole acoustic mapping

A downhole tool for operation within a wellbore and including a transmitter array and first and second receiver arrays. The transmitter array includes a plurality of transmitters azimuthally distributed around a longitudinal axis of the downhole tool at a first axial location of the downhole tool. The first receiver array... Schlumberger Technology Corporation

01/04/18 / #20180003844

Acoustic tool eccentering correction

Amplitudes and travel times of the acoustic signal received at different azimuthal locations of the downhole tool are measured. Correction factors, each corresponding to a different one of the measured amplitudes, are determined based on the travel times measured at each of the different azimuthal locations. Corrected amplitudes are each... Schlumberger Technology Corporation

Patent Packs
01/04/18 / #20180003845

Acoustic sensing with azimuthally distributed transmitters and receivers

A downhole tool having a transmitter array with azimuthally spaced transmitters and receiver arrays with azimuthally spaced receivers. Methods of operation include transmitting an acoustic signal from an individual one of the transmitters, sensing an attribute of the acoustic signal with the receivers, and evaluating a characteristic of a portion... Schlumberger Technology Corporation

01/04/18 / #20180003846

System and methodology for removing noise associated with sonic logging

A technique facilitates removal of noise from sonic logging signals. The technique may comprise various approaches used alone or in combination to reduce or eliminate noise associated with tool arrival. The technique may comprise an active cancellation approach which optimizes the cancellation effect while having minimal impact on the desired... Schlumberger Technology Corporation

01/04/18 / #20180003849

Downhole electromagnetic sensing techniques

An electromagnetic (EM) telemetry system includes an EM transmitter configured to transmit EM signals downhole and multiple sensors each configured to communicate with the EM transmitter and with another of the multiple sensors. Each sensor is placed a distance from another sensor along a length of a wellbore in the... Schlumberger Technology Corporation

01/04/18 / #20180003854

X-ray downhole tool with at least two targets and at least one measurement detector

The current disclosure is related to a downhole tool that comprises an electronic photon generator and at least one detector. The electronic photon generator comprises a cathode configured to emit electrons, a first target configured to generate photons when struck by the electrons, a second target configured to generate photons... Schlumberger Technology Corporation

01/04/18 / #20180004863

Asphaltene phase instability analysis in gas charges into oil reservoirs

A method includes placing a downhole acquisition tool in a wellbore in a geological formation containing a reservoir fluid. The method includes performing downhole fluid analysis using the downhole acquisition tool to determine at least one measurement of the reservoir fluid. The method includes using a processor to estimate at... Schlumberger Technology Corporation

01/04/18 / #20180004868

Cloud-based reservoir simulation environment

Reservoir simulations may be executed in a high performance computing cloud cluster (530) provisioned within a cloud computing environment (450) and accessible by graphical pre- and/or post-processors (410) resident on a computer system (402) that is external to the cloud computing environment.... Schlumberger Technology Corporation

01/04/18 / #20180005360

Method and system for pattern correction of borehole images through image filtering

In one embodiment, a computer-based method includes obtaining a first image where the first image includes one or more patterns, generating a second image that substantially removes or reduces the one or more patterns from the first image at least partially by automatically detecting the one or more patterns and... Schlumberger Technology Corporation

01/04/18 / #20180006684

Ac/dc downhole power switch using switching communication system

A method includes receiving a request to supply power of a first type to a toolstring. The toolstring includes a first tool that operates using the power of the first type and a second tool that operates using power of a second type. The method also includes receiving an indication... Schlumberger Technology Corporation

12/28/17 / #20170369708

Degradable composite structures

Embodiments may generally take the form of a degradable composite structure and a method for controlling the rate of degradation of a degradable composite structure. An example embodiment may take the form of a degradable polymer matrix composite (PMC) including a matrix having: a degradable polymer, a fiber reinforcement, and... Schlumberger Technology Corporation

12/28/17 / #20170370161

System and preloading connection using pressure

A technique facilitates formation of a connection between a first component and a second component. The first component and the second component may each comprise a tubular component. Additionally, the second component is secured to the first component via a coupler which is constructed to establish a hydraulic chamber between... Schlumberger Technology Corporation

12/28/17 / #20170370170

Failsafe valve system

A technique facilitates failsafe closure of a valve used in, for example, a subsea test tree. The technique utilizes a valve combined with a cutter oriented to sever well equipment passing through an interior passage of the valve. The valve is operatively coupled with an actuation system having an actuator... Schlumberger Technology Corporation

12/28/17 / #20170370174

Elastomeric materials

A bore tool can include a component that includes a longitudinal axis and a perimeter surface disposed at one or more radii from the longitudinal axis; and an elastomeric component disposed about the perimeter surface where the elastomeric component includes an elastomeric material that includes carbon-based nanoplatelets.... Schlumberger Technology Corporation

12/28/17 / #20170370191

Method of creating and executing a plan

A plan structure and its applications in the upstream oil and gas industry are disclosed. The plan defines logical, sequential and conditional interrelationships between events in the plan, so that a controller can carry out the plan in a flexible and time-independent manner to complete the sequenced events. The definition... Schlumberger Technology Corporation

12/28/17 / #20170370194

Selectable switch to set a downhole tool

A perforating gun includes a carrier, an explosive charge positioned within the carrier, a detonator positioned within the carrier, and a switch positioned within the carrier. The detonator detonates the explosive charge when the detonator receives power. The switch actuates between at least a first position and a second position.... Schlumberger Technology Corporation

12/28/17 / #20170370205

Base gauge and multiple remote sensors

A system for monitoring one or more downhole parameters. The system includes a downhole base gauge configured to receive power from a surface power drive and to communicate data with a surface computing device and a plurality of downhole remote sensors coupled to the base gauge in series and configured... Schlumberger Technology Corporation

12/28/17 / #20170370212

Measuring current from an electrode using a non-linear element

An arrangement for generating a resistivity image having a drill bit with cutters configured to be placed within a wellbore, the cutters configured to create further sections of the wellbore upon rotation, the drill bit having an end with threads for engagement, at least one section of drill string connected... Schlumberger Technology Corporation

12/28/17 / #20170370214

Prediction of fluid composition and/or phase behavior

Apparatus and methods for obtaining first properties of a fluid, such as by estimating a second property of the fluid based on the first properties using a machine learning algorithm, propagating a first uncertainty of the first properties to a second uncertainty of the second property, generating an expected phase... Schlumberger Technology Corporation

12/28/17 / #20170370215

Prediction of saturation pressure of fluid

Apparatus and methods for obtaining a data response of a fluid as a function of pressure of the fluid, and estimating a dew point pressure of the fluid by detecting an inflection pressure, a downward curve pressure, a characteristic change pressure, and an intersection pressure of the function representative of... Schlumberger Technology Corporation

12/28/17 / #20170370828

Phase fraction measurement using continuously adjusted light source

An apparatus includes a pipe through which a multiphase fluid flows, with a transparent window structure formed in the pipe. A collimated light source emits light through the transparent window structure into the pipe having a wavelength at which a component of a desired phase of the multiphase fluid is... Schlumberger Technology Corporation

12/28/17 / #20170370896

Phase fraction measurement using light source adjusted in discrete steps

Disclosed herein is an apparatus including a structure containing a multiphase fluid and having a transparent window. A collimated light source emits light through the transparent window structure at a wavelength at which a component of a desired phase of the multiphase fluid is absorptive. A photodetector is positioned such... Schlumberger Technology Corporation

12/28/17 / #20170371051

Microseismic sensitivity analysis and scenario modelling

Systems, methods, and computer-readable media for designing a microseismic monitoring project. The method includes receiving data representing the microseismic monitoring project for at least one subterranean volume, the data including data representing a plurality of factors associated with a design of the microseismic monitoring project. The method also includes conducting... Schlumberger Technology Corporation

12/28/17 / #20170371059

Methods and systems for non-contact vibration measurements

Methods and systems of measuring acoustic signals via a borehole wall are disclosed. One or more non-contact magneto-dynamic sensors are configured or designed for deployment at at least one depth in a borehole. The magneto-dynamic sensor comprises a coil excited by an electric current and a circuitry for outputting a... Schlumberger Technology Corporation

12/28/17 / #20170371072

Method for determining formation properties by inversion of multisensor wellbore logging data

A method for determining properties of a formation traversed by a well or wellbore employs measured sonic data, resistivity data, and density data for an interval-of-interest within the well or wellbore. A formation model that describe properties of the formation at the interval-of-interest is derived from the measured sonic data,... Schlumberger Technology Corporation

12/28/17 / #20170372490

Automatic dip picking in borehole images

The techniques and device provided herein relate to receiving, via a processor, image data representative of a borehole of a well. The technique may include generating dequantized image data based on the image data, such that the dequantized image data filters one or more artifacts present in a Hough transformed... Schlumberger Technology Corporation

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