Halliburton Energy Services, Inc.

Corning Cable Systems

Corning Optical Communications LLC

Corning Incorporated

Sterlite Technologies Limited

Seldon David Benjamin

Mikko K Jaaskelainen

Jason Edward Therrien

James Phillip Luther

Dennis Michael Knecht

Micah Colen Isenhour

Kevin Wallace Bennett

Brian Vandellyn Park

Dana Craig Bookbinder

Kishore Chandra Sahoo

Davide Domenico Fortusini

Jeffery Alan DeMeritt

Sravan Kumar

Timothy Edward Myers

William Carl Hurley

Douglas Llewellyn Butler

Michael De Jong

David Wesley Chiasson

Michael Heath Rasmussen

Randy LaRue McClure

James Scott Sutherland

Alan Frank Evans

Christopher Paul Lewallen

Robert Adam Modavis

Jacob George

Robert Stephen Wagner

Anthony Ng'oma

Wolfgang Gottfried Tobias Schweiker

Richard Robert Grzybowski

Venkatesh Murthy

Samuel Don Navé

Hemanth Kondapalli

Radawan Hall

Howard Clark Schwartz

Gregory Blake Bohler

Brewster Roe Hemenway, Jr

Jeffrey Coon

Ashiqur Rahman

Manoj Mittal

Yunmiao Wang

Jeffery Alan DeMerritt

Percil Watkins

Chi Zhang

Stephen P Hegarty

Henry Timmons Moeller, Ii

Jeffery A Demeritt

Various embodiments include methods and apparatus structured to install an optical fiber cable into a well at a well site. In a from-bottom-to-top embodiment, an anchor deployed at a selected location in a hole of the well can be used and the optical fiber cable can be pulled up to a surface of the well from the selected location. In a from-top-to-bottom embodiment, an optical fiber cable can be moved down from the surface until an end of the optical fiber cable is locked at a selected location by a catcher disposed at the selected location. With the optical fiber cable in the well, a portion of the optical fiber cable can be coupled to surface instrumentation. Additional apparatus, systems, and methods can be implemented in a variety of applications.

Downhole fiber installation equipment and method

The present disclosure provides a method for stacking of a plurality of optical fibre ribbons (). The plurality of optical fibre ribbons () is defined by a top surface (S) and a bottom surface (S). The top surface (S) and bottom surface (S) are defined by a plurality of elevated regions and a plurality of groove regions. The method for stacking of the plurality of optical fibre ribbons () includes arranging the plurality of optical fibre ribbons () over each other such that the plurality of elevated regions of each of the plurality of optical fibre ribbons fits over the plurality of groove regions of an adjacent optical fibre ribbon of the plurality of optical fibre ribbons (). In addition, arrangement of the plurality of optical fibre ribbons forms an optical fibre ribbon stack ().

Optical fibre ribbon and optical fibre cables thereof

A method is described for enabling Raman Based Distributed Temperature Sensing (DTS) systems to operate over larger environmental temperature ranges than any systems available today.

Distributed temperature sensing over extended temperature ranges

Disclosed is a system and method for improving the performance of downhole Distributed Acoustic Sensing (DAS) systems by simultaneous use of co-propagating and counter-propagating Distributed Raman Amplification (DRA). It uses a surface DRA system with a surface DAS system to combine their laser sources where the distal end of the downhole sensing fiber use uses a Wavelength Division Multiplexer (WDM) to optically split the DRA and DAS signals onto two optical fibers. The DAS fiber/signal is terminated with a low reflectance termination to minimize a potential back reflection whereas the DRA fiber is terminated with a high reflectance termination causing all the light to reflect back up the sensing fiber. This arrangement allows for simultaneous co and counter-propagating DRA of the DAS signals, both the transmitted pulse and the back scattered light, thus creating the maximum amount of gain possible.

DRA DAS system

A system of translatable electro acoustic technology (EAT) modules for deployment along an oil or gas wellbore casing includes: a wireline/slickline optical distributed acoustic sensing (DAS) cable deployed from the surface into the casing and connected to a surface interrogator; a tractor attached to the downhole end of the wireline/slickline optical distributed acoustic sensing (DAS) cable; and one or more EAT sensing modules that can be coupled to or decoupled from the wireline/slickline optical distributed acoustic sensing (DAS) cable at pre-selected locations and can either be coupled to or decoupled from the casing of the wellbore or be allowed to reposition along the wellborn casing, wherein the one or more EAT sensing modules can conduct multiple measurements and communicate the results via the wireline/slickline optical distributed acoustic sensing (DAS) cable to the surface interrogator.

Translatable eat sensing modules and associated measurement methods

A system for continuous determination of annulus pressure in subsurface wells comprises one or more electro acoustic technology sensor assemblies permanently installed in each annulus surrounding a subsurface well; and a fiber optic cable in close proximity to the electro acoustic technology sensor assemblies and in communication with a surface distributed acoustic fiber optic interrogator.

Using electro acoustic technology to determine annulus pressure

The present invention relates to padded optic fiber ribbons for dry optic fiber cables. The dry padded optic fiber ribbons include a plurality of optic fiber ribbons stacked on top of each other having a cross-sectionally rectangular shape. In addition, the dry padded optic fiber ribbons include a plurality of dry paddings. Each dry padding of the plurality of dry paddings has an inner side and an outer side. Further, the dry padded optic fiber ribbons include at least one tape wrapping around the plurality of dry paddings.

Dry padded optic fiber ribbons for dry optic fiber cable

A cable introduction assembly that can include: a spool assembly including a spool having a first axis, the spool configured to retain a cable wound around the first axis in an undeployed mode; and a spool mount assembly configured to retain the spool and introduce the cable in a deployed mode into a conduit configured for a downhole environment, the conduit having a proximal end and a distal end, the cable in the deployed mode extending from the proximal end towards the distal end, wherein the spool assembly is configured to provide a handedness to the cable in the deployed mode.

Helix hand reversal mitigation system and method

The present invention discloses a fiber optical cable with a plurality of bendable optical fiber ribbon. The fiber optical cable with bendable ribbons increases the total fiber counts compared to conventional optical fiber ribbon cables by eliminating empty spaces of the conventional cables due to stacking of the ribbons in the cross-sectionally circular shape of the loose tubes and the cable jacket. According to an embodiment of the present invention, a bendable ribbon will further allow ribbon labeling on a flat side of the ribbon.

Bendable ribbon for optical fiber ribbon cable

Various embodiments include methods and apparatus structured to increase efficiencies of a drilling operation. These efficiencies may be realized with a fiber cable located in a wellbore at a well site, where the fiber cable can include an optical fiber disposed as a single handed helix in the fiber cable, where the optical fiber is disposed in the cable without having helix hand reversal. Construction of such fiber cables may include applying a twist to the optical fiber during insertion of the optical fiber into the fiber cable in a tubing process in which control of an amount of the twist to form a portion of the optical fiber can control excess fiber length in the tube. Additional apparatus, systems, and methods can be implemented in a variety of applications.

Excess optical fiber deployment control

A system and method for enabling inductive charging through downhole casings for electro acoustic technology devices.

Inductive charging for electro acoustic technology

A method is described for compensating measurement errors of fiber Bragg grating (FBG) sensors installed in fiber cables in down-hole oil and gas environments due to hydrogen darkening. The method involves loading a fiber of known length and multiple FBG sensors in a hydrogen chamber with control of temperature, hydrogen concentration, pressure, and time and adjusting each of the variables through a test matrix while continuously measuring and recording the fiber transmission loss and FBG spectrum changes, then creating a correlation map of fiber transmission loss vs. Bragg wavelength shift, and using that map for compensating the wavelength shift of downhole installed fiber cables as a function of their hydrogen induced transmission loss through time.

Method to compensate measurement error of fiber Bragg grating sensor caused by hydrogen darkening

The present invention is directed to an optical fiber that includes a glass core region that has nano-sized structures configured to scatter light propagating in the glass core region. The glass core region has an average refractive index n. The fiber includes an interior glass cladding region that has an interior cladding refractive index nthat is less than n. The fiber includes an outer cladding region that has an outer cladding refractive index nthat is less than n. A refractive index difference of n&#x2212;ncorresponds to a bend uniformity diameter; the light exiting the outer cladding at a fiber bending location is substantially non-uniform when a bending diameter of the fiber bending location is less than the bend uniformity diameter.

Double clad light diffusing fiber, connector system and illuminaire

A multicore optical fiber with a reference section having a material defining a marked multicore glass optical fiber. The multicore fibers can be in groupings, for example, the groupings can be in the form of one of an optical fiber ribbon covered by a matrix, and a tight buffered cable. Fiber optic connectors can be assembled to the multicore optical fiber at either or both ends, and the colored portion can be associated with the optical fiber connector aligning the optical core elements with the optical connectors. The assembly can have at least one transceiver device with a transmit port and a receive port defining a two-way communication channel. Further aspects describe methods of manufacturing multicore fibers including application of curable coatings and reference sections.

Multicore optical fibers and methods of manufacturing the same

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Painted Post, NY, United States of America

Seldon David Benjamin