| Patent application number | Description | Published |
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| 20110218790 | SYSTEM AND METHOD FOR DETERMINING CHARACTERISTICS OF POWER CABLES USING DISTRIBUTED TEMPERATURE SENSING SYSTEMS - A system and method using both static and transient modeling of power cables coupled with real time measurements of distributed temperature profiles of both the cable and it's immediate environment to optimize the current loads of the power cable. The optical fibers used for measuring distributed temperature profiles can be integrated directly into the monitored power cables or be deployed alongside the power cables, including using the optical fibers deployed in optical power ground wire systems. | 09-08-2011 |
| 20120010846 | HIGH SPATIAL RESOLUTION FIBER OPTIC TEMPERATURE SENSOR - High resolution distributed temperature sensors using fiber optic distributed temperature sensing systems deployed on various carriers to significantly improve spatial resolution and provide high resolution temperature profile and detection of fluid or fluid interface levels. | 01-12-2012 |
| 20120105826 | High Sampling Resolution DTS System and Method - A method of improving sampling resolution in a distributed temperature measurement system using a fiber optic distributed sensor by means of programmed delayed trigger signals to a laser light source in order to improve the spatial resolution of such systems. | 05-03-2012 |
| 20150116124 | Robust Optical Fiber-Based Distributed Sensing Systems and Methods - An illustrative distributed sensing system includes a fiberoptic cable, a transmitter module, and a receiver module. The transmitter module is coupled to the fiberoptic cable to communicate light in each of multiple independent paths to each of multiple positions along the cable, The receiver module is coupled to the fiberoptic cable to receive backscattered light from said multiple positions along the cable via the multiple independent paths. The receiver module includes at least one receiver for each of said multiple independent paths to obtain simultaneous measurements for each of said multiple positions. The multiple independent paths may be provided by wave division multiplexing, frequency division multiplexing, spatial mode division multiplexing, multicore fiber, and/or multiple fibers. | 04-30-2015 |
| 20150308259 | METHOD FOR MONITORING PHYSICAL PARAMETERS OF WELL EQUIPMENT - A method of monitoring deformation and other characteristics of a casing or other tubular or cylindrical well equipment in a well traversing an underground formation. The method includes providing a carrier rod having at least one recess extending along at least part of the length of the rod, in which recess an optical fiber assembly for monitoring strain, temperature and/or other physical parameters is arranged, which assembly is along at least part of the assembly's length bonded within the recess; lowering the carrier rod and well equipment simultaneously into the well such that the rod is arranged in an annular space between the well equipment and the wellbore; securing the rod at a plurality of locations distributed along the rod's length to the well equipment; and connecting the optical fiber assembly to an optical signal transmission and reception assembly for monitoring physical parameters of the well equipment. | 10-29-2015 |
| Patent application number | Description | Published |
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| 20080314579 | Method and System for Inserting a Fiber Optical Sensing Cable Into an Underwater Well - A fiber optical sensing cable is inserted into an underwater well by: connecting a housing ( | 12-25-2008 |
| 20100025048 | U-Shaped fiber optical cable assembly for use in a heated well and methods for in-stalling and using the assembly - A U-shaped fiber optical cable assembly ( | 02-04-2010 |
| 20110048136 | PRESSURE SENSOR ASSEMBLY AND METHOD OF USING THE ASSEMBLY - A pressure sensor assembly comprises a sensor housing having a flexible wall that is configured to deform in response to a pressure difference between the interior and exterior of the sensor housing; —a first fiber optical cable section that is bonded to the flexible wall of the sensor housing such that the length of the first fiber optical cable section changes in response to deformation of the wall in response to the said pressure difference; a second fiber optical cable section which is bonded to a thermal reference body, which body is connected to the sensor housing by a strain decoupled connection mechanism, such as a tack weld or flexible glue, and is configured to deform substantially solely in response to thermal deformation, such that the length of the second fiber optical cable section solely changes in response to thermal deformation of the thermal reference body. | 03-03-2011 |
| 20130192640 | SYSTEM AND METHOD FOR REMOVING DELETERIOUS CHEMICALS FROM A FIBER OPTIC LINE - According to one embodiment, the disclosure provides a system for removal of deleterious chemicals from a fiber optic line. The system may a fiber optic line having two ends, an outer tube, an optical fiber, and an inner volume, a fluid operable to move through the inner volume, the fluid operable to remove at least one deleterious chemical other than hydrogen from the fiber optic line, and a fluid controller connected to at least one end of the fiber optic line and operable to control movement of the fluid through the inner volume. According to another embodiment, the disclosure provides a method of removing a deleterious chemical from a fiber optic line. According to a third embodiment, the disclosure provides a method of removing a deleterious chemical from a fiber optic line by introducing a vacuum in an inner volume of a sealed fiber optic line in a static or cyclical manner. | 08-01-2013 |
| Patent application number | Description | Published |
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| 20120206718 | Stimulated Brillouin System with Multiple FBG's - A Brillouin system for monitoring both temperature and strain includes either a single or double-ended fiber with multiple fiber Bragg gratings (FBG's) at different wavelengths and a pumped seed laser system tunable over a range substantially larger than a Brillouin shift. The FBG's are distributed along the length of the deployed fiber and serve as wavelength selectable reflectors that enable maintaining system operation even in the case of a fiber break. | 08-16-2012 |
| 20120250722 | Calibrated Fire Detection Cable - A system and method for providing greatly improved linear heat detection using fiber optic distributed temperature systems (DTS). The invention makes use of correction algorithms based on proportional-integral-derivative notions that anticipate exterior temperature increases based on the rate of measured temperature changes. | 10-04-2012 |
| 20130003777 | Multi Wavelength DTS Fiber Window with PSC Fiber - A DTS system resistant to hydrogen induced attenuation losses during the service life of an installation at both low and high temperatures using matched multi-wavelength DTS automatic calibration technology in combination with designed hydrogen tolerant Pure Silica Core (PSC) optical fibers. | 01-03-2013 |
| 20130042415 | Mitigation of Radiation Induced Attenuation - A DTS system resistant to radiation induced attenuation losses during the service life of an installation at both low and high temperatures using matched multi-wavelength distributed temperature sensing automatic calibration technology in combination with designed Pure Silica Core (PSC) optical fibers and an in process photo bleaching method provided by the light sources of the distributed temperature sensing system. | 02-21-2013 |
| 20130209029 | Spectral Broadening for DTS Application - An apparatus and method for use in distributed temperature sensing (DTS) systems to reduce coherent Rayleigh scattering in fiber optic cables by using photonic crystal fibers. | 08-15-2013 |
| 20130315552 | Attachment Method to Keep Optical Fiber in Tension - A method using a capstan device and different bonding methods for minimizing undesirable time-dependent effects that occur in sensing devices that use optical fibers placed in tension. | 11-28-2013 |
| 20140105533 | Method to Install Sensing Cables in Monitoring Wells - A tubular seismic sensing cable for use in wells and a method of deployment into wells to provide higher seismic sensitivity. | 04-17-2014 |
| 20140139226 | OPTICAL PUSH-PULL INTERFEROMETRIC SENSORS FOR ELECTROMAGNETIC SENSING - A method of measuring an electromagnetic field in a formation can include installing an electromagnetic sensor with improved sensitivity, the sensor including multiple optical waveguides and respective multiple materials, and in response to exposure to the electromagnetic field, the materials changing shape in opposite directions. A well system can include an optical electromagnetic sensor which measures an electromagnetic field in a formation, and wherein optical path lengths or phases in optical waveguides of the sensor change both positively and negatively in response to exposure to the electromagnetic field. A method of monitoring a formation can include installing an optical electromagnetic sensor in a wellbore which penetrates the formation, and an optical path length/phase in an optical waveguide of the sensor increasing in response to exposure to the electromagnetic field, and an optical path length/phase in another optical waveguide of the sensor decreasing in response to exposure to the electromagnetic field. | 05-22-2014 |
| 20140208821 | In-Situ System Calibration - A method for re-calibrating installed downhole sensors used in hydrocarbon wells by the application of a calibration string inserted in the wells and deployed in close proximity to the installed downhole sensor. | 07-31-2014 |
| 20140219620 | Fiber Splice Housing with Temperature Compensation - A method and device for relieving thermal stresses on the optical fibers in fiber optic splice housings used in hostile thermal environments. | 08-07-2014 |
| 20140230229 | Coiled Tubing Servicing Tool - A coiled tubing servicing system comprising a servicing cart comprising two or more support frames, a length of coiled tubing supported by the servicing cart, a servicing fixture disposed about a portion of the length of coiled tubing adjacent the servicing cart, wherein the servicing fixture is movable along a longitudinal axis of the length of coiled tubing and radially about the longitudinal axis of the length of coiled tubing; and a servicing tool coupled to the servicing fixture. | 08-21-2014 |
| 20140230232 | Method and Device for Installing Multiple Fiber Optic Cables in Coiled Tubing - A method for installing multiple fiber optic cables in coiled tubing in oil and gas operations. | 08-21-2014 |
| 20140230233 | Method for Installing Multiple Sensors in Coiled Tubing - A method for installing multiple fiber optic cables in coiled tubing in oil and gas operations. | 08-21-2014 |
| 20140231066 | Coiled Tubing System with Multiple Integral Pressure Sensors and DTS - A multiple integral pressure transducer system for installation in oil field downhole coiled tubing systems. | 08-21-2014 |
| 20140260588 | Flow Sensing Fiber Optic Cable and System - A system and method for monitoring oil flow rates at multiple points in production wells using a flow sensing fiber optic cable. An illustrative system embodiment includes: a fiber optic sensing system housed within a tube suitable for a downhole environment; and a flow to signal conversion device attached to the tube and deployed in the oil flow. | 09-18-2014 |
| 20140285793 | DISTRIBUTED STRAIN AND TEMPERATURE SENSING SYSTEM - A downhole optical sensing system can include an optical fiber positioned in the well, the optical fiber including multiple cores, and one of the cores having a Brillouin scattering coefficient which is different from another one of the cores. A method of sensing strain and temperature as distributed along an optical fiber can include measuring Brillouin scattering in a core of the optical fiber disposed in a well, and measuring Brillouin scattering in another core of the optical fiber disposed in the well, the optical fiber cores being exposed to a same strain and temperature distribution in the well. | 09-25-2014 |
| 20140285795 | DOWNHOLE MULTIPLE CORE OPTICAL SENSING SYSTEM - A downhole optical sensing system can include an optical fiber positioned in the well, the optical fiber including multiple cores, and at least one well parameter being sensed in response to light being transmitted via at least one of the multiple cores in the well. The multiple cores can include a single mode core surrounded by a multiple mode core. A method of sensing at least one well parameter in a subterranean well can include transmitting light via at least one of multiple cores of an optical fiber in the well, the at least one of the multiple cores being optically coupled to a sensor in the well, and/or the at least one of the multiple cores comprising a sensor in the well, and determining the at least one well parameter based on the transmitted light. | 09-25-2014 |
| 20140285875 | REMOTE PUMPED DUAL CORE OPTICAL FIBER SYSTEM FOR USE IN SUBTERRANEAN WELLS - A downhole optical system can include an optical fiber disposed in a subterranean well, and an optical fiber amplifier which amplifies optical power in a core of the optical fiber in the well, the amplifier being optically pumped with optical power in another core of the optical fiber in the well. Another downhole optical system can include an optical fiber disposed in a subterranean well, the optical fiber comprising multiple cores, and an optical fiber amplifier comprising multiple cores optically coupled respectively to the optical fiber multiple cores in the well. | 09-25-2014 |
| 20140327919 | Remote Seal for Pressure Sensor - A system for sensing downhole pressure in in a hydrocarbon well using a Fabry-Perot (F-P) sensor in series with a Fiber Bragg Grating and maintaining the back pressure on the sensor system with a surface sealing system and a surface pressure control system. | 11-06-2014 |
| 20140362431 | Generating Broadband Light Downhole For Wellbore Application - Generating broadband light downhole for wellbore application. A laser source is configured to reside outside a wellbore and produce a seed light pulse at a first wavelength spectrum. A converter is configured to be received inside the wellbore, remote from the laser source. The converter receives the seed light pulse at the first wavelength spectrum through one or more fiber optic cables, and generates light at a second wavelength spectrum that has a broader range than the first wavelength spectrum. | 12-11-2014 |
| 20140363117 | Fiber Optic Sensing System with Hydrogen Flush - A system and method for controlling hydrogen concentration in optical sensing systems in subsurface wells. In an exemplary system the downhole optical fiber sensors are positioned within nested conduits and a controlled concentration hydrogen gas is flowed in a first direction through the first conduit, and flowed in a second direction through the annulus, wherein the second direction is opposite to the first direction. | 12-11-2014 |
| 20150013970 | Sand Control Screen Assembly with Internal Control Lines - Disclosed are sand control screens and completion assemblies that receive, retain, and protect control lines during installation and operation thereof. One disclosed completion assembly includes a base pipe, at least one screen jacket positioned around the base pipe and operable to prevent an influx of particulate matter of a predetermined size therethrough, a control line housing arranged uphole from the at least one screen jacket and having a fiber optic splicing block disposed therein, the at least one fiber optic splicing block being communicably coupled to a control line that extends uphole from the control line housing, and one or more hydraulic conduits arranged longitudinally between the at least one screen jacket and the base pipe and extending from the control line housing. | 01-15-2015 |
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| 20100249326 | SOFT POLYPROPYLENE COMPOSITION WITH SOFT TOUCH FEELING - Propylene polymer composition comprising a polypropylene (A), an elastomeric copolymer (B) of ethylene and at least one α-olefin comonomer selected form the group consisting of propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene and 1-octene, and an ethylene C2 to C8 alkyl acrylate copolymer (C) wherein the composition has a strain hardening SH | 09-30-2010 |
| 20100272939 | POLYOLEFIN COMPOSITIONS HAVING IMPROVED OPTICAL AND MECHANICAL PROPERTIES - Novel polyolefin compositions comprising (A) a first propylene-ethylene random copolymer and (B) a second propylene-ethylene random copolymer, wherein the polyolefin composition has an ethylene content CM | 10-28-2010 |
| 20110104416 | PROPYLENE-HEXENE RANDOM COPOLYMER PRODUCED IN THE PRESENCE OF A ZIEGLER NATTA CATALYST - Propylene copolymer a. comprising at least 1-hexene as a comonomer, b. having a comonomer content in the range of 1.0 to 3.0 wt.-%, c. having a xylene soluble fraction equal or below 2.5 wt.-%, and d. being partially crystallized in the β-modification. | 05-05-2011 |
| 20110224387 | PREPARATION OF PROPYLENE COPOLYMER WITH DYNAMICALLY OPERATED REACTOR - The present invention relates to a process for the preparation of a propylene copolymer P1 having ethylene-derived comonomer units, which comprises the following steps: (i) introducing propylene, ethylene, and hydrogen into a polymerisation reactor R1, wherein the ethylene is fed to the polymerisation reactor R1 in a periodically varying amount, (ii) preparing the propylene copolymer in the polymerisation reactor R1 in the presence of a catalyst. | 09-15-2011 |
| 20110293869 | HIGH MELT FLOW RANDOM POLYPROPYLENE COPOLYMER - The present invention provides polymer compositions, comprising a random propylene copolymer having an MFR | 12-01-2011 |
| Patent application number | Description | Published |
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| 20080207835 | Heterophasic Polymer Composition and Process for its Preparation - The invention relates to a heterophasic alpha-olefÊn random copolymer composition with a melting temperature (Tm) of at least 130° C. and a flexural modulus of not higher than 1000 MPa5 whereby the inventive composition comprises an al-pha-olefin random copolymer component (A) of at least two alpha-olefÊn (co)polymer fractions (i) and (ii) having a different comonomer content, whereby at least one of the fractions is an alpha-olefÊn random copolymer, and a rubber component (B). | 08-28-2008 |
| 20090306271 | Multimodal Polypropylene Polymer Composition - A multimodal polymer composition comprising: (A) a polypropylene homopolymer or a propylene random copolymer comprising propylene and up to 5 weight % of comonomer selected from ethylene and/or C | 12-10-2009 |
| 20100003435 | ARTICLE - The present invention provides an article comprising a biaxially oriented polypropylene composition, wherein said composition comprises a multimodal polypropylene and a polymeric nucleating agent. The articles are suitable for use in the medical and food industries. | 01-07-2010 |
| 20100249326 | SOFT POLYPROPYLENE COMPOSITION WITH SOFT TOUCH FEELING - Propylene polymer composition comprising a polypropylene (A), an elastomeric copolymer (B) of ethylene and at least one α-olefin comonomer selected form the group consisting of propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene and 1-octene, and an ethylene C2 to C8 alkyl acrylate copolymer (C) wherein the composition has a strain hardening SH | 09-30-2010 |
| 20100272939 | POLYOLEFIN COMPOSITIONS HAVING IMPROVED OPTICAL AND MECHANICAL PROPERTIES - Novel polyolefin compositions comprising (A) a first propylene-ethylene random copolymer and (B) a second propylene-ethylene random copolymer, wherein the polyolefin composition has an ethylene content CM | 10-28-2010 |
| 20110104416 | PROPYLENE-HEXENE RANDOM COPOLYMER PRODUCED IN THE PRESENCE OF A ZIEGLER NATTA CATALYST - Propylene copolymer a. comprising at least 1-hexene as a comonomer, b. having a comonomer content in the range of 1.0 to 3.0 wt.-%, c. having a xylene soluble fraction equal or below 2.5 wt.-%, and d. being partially crystallized in the β-modification. | 05-05-2011 |
| 20120015170 | HIGH FLOW POLYPROPYLENE COMPOSITION - The present invention relates to a high flow polypropylene composition comprising (A) a low molecular weight propylene homopolymer fraction and (B) a high molecular weight propylene copolymer fraction, having a comonomer content of not higher than 8 wt %, wherein the ratio between the MFR | 01-19-2012 |
| 20130005902 | HETEROPHASIC POLYPROPYLENE WITH IMPROVED BALANCE BETWEEN STIFFNESS AND TRANSPARENCY - The present invention relates to a heterophasic polypropylene composition with rather high melt flow rate, high stiffness, acceptable impact properties and an advantageous balance between stiffness and transparency. Still further, the present invention is also directed to a process for producing the inventive polypropylene composition, to an article made of the inventive polypropylene composition and to the use of the inventive polypropylene composition for the production of films and moulded articles, such as thin-walled plastic containers for packaging. The inventive heterophasic polypropylene composition comprises at least a propylene homopolymer fraction, a propylene random copolymer fraction, two different ethylene-propylene rubber fractions and an ethylene homo- or copolymer fraction. | 01-03-2013 |
| 20140079899 | PROPYLENE-HEXENE RANDOM COPOLYMER PRODUCED IN THE PRESENCE OF A ZIEGLER NATTA CATALYST - Propylene copolymer a. comprising at least 1-hexene as a comonomer, b. having a comonomer content in the range of 1.0 to 3.0 wt.-%, c. having a xylene soluble fraction equal or below 2.5 wt.-%, and d. being partially crystallized in the β-modification. | 03-20-2014 |
| 20140220236 | PROCESS FOR THE MANUFACTURE OF A CAPACITOR FILM - Process for producing of a capacitor film comprising the steps of (a) polymerizing propylene in the presence of a catalyst comprising a solid catalyst system obtaining a polypropylene, (b) subjecting said polypropylene to a film forming process obtaining a capacitor film, wherein during the polymerization step (a) said catalyst comprising the solid catalyst system fragments into nanosized catalyst fragments being distributed in said polypropylene, said solid catalyst system comprises a transition metal, a metal which is selected from one of the groups 1 to 3 of the periodic table (IUPAC), and an internal electron donor. | 08-07-2014 |
