Yearly Archives: 2016


Increased use of distributed fibre optic technology linked to spending cutbacks

Silixa achieved a number of milestones in proving distributed acoustic and temperature monitoring systems during 2016.

The use of Silixa’s iDAS™ technology in upstream oil and gas applications has increased for borehole seismic applications. Several surveys were conducted where fibre optic enabled wirelines were conveyed into deep wells, both offshore and on land, allowing seismic data to be gathered from along the entire cable length. This has demonstrated significant benefits over geophone acquisition enabling a much wider aperture sensor array as well as accessing wells where geophone deployment has proven difficult or no possible.

2016 also saw the first full scale repeat seismic (4D) offshore survey with high resolution iDAS data. This was used to compliment ocean bottom node data from the same survey period.

The iDAS and ULTIMA™ DTS gained more traction in the US Shale market despite the unfavourable economic conditions; most notably Silixa has demonstrated that when optical fibres are installed in the well this technology opens up access to various types of data at all stages of the well, such as VSP, cement evaluation, frac monitoring, microseismic detection, flow back and production profiling.

Silixa has also closely assisted an operator to implement distributed acoustic sensing for the detection of sand entry in producing wells as part of a wider sand management effort. This project complements data acquisition with software and hardware development to create a truly integrated and scalable system.

Production monitoring remains one of Silixa’s key application goals with the iDAS and ULTIMA DTS technologies. To this end Silixa has participated in a multi-well offshore trial focussing on successful installation of fibre optic cables in mono-bore completions and subsequently acquiring high quality acoustic and temperature data for use in the interpretation of production conditions.

The use of Silixa’s technologies in environmental applications has also increased. In 2016 several active distributed temperature sensing (Active-DTS) surveys were conducted in the United Kingdom. Active-DTS is a technique that combines distributed temperature measurements with a heat pulse sent along an optical cable containing copper wire. Soil water content profiles can be extracted from temperatures trends during heating and/or cooling phases. Measurements utilised the ULTIMA DTS  and XT-DTS™ and the data proved to be invaluable.

Fibre optic based distributed sensing technologies have also gained a firmer ground in geothermal applications. A 9 km surface array and 400 m downhole cable were installed at an operational geothermal field and power plant in the United States to record a continuous seismic and temperature dataset for 15 days. The aim was to use poroelastic tomography to characterize the geothermal reservoir response due to changes in pumping and injection. The collected seismic data will be used to create a 4D model of the reservoir during the monitoring period. Information gained about the reservoir can be used to guide the geothermal plant future operations.

As part of the EU FPA ZONESEC project, Silixa has started working with its partners on an Integrated Project that aims to integrate affordable ground and airborne sensor technologies for the surveillance of large spatial areas of high economic values in Europe.

Having contributed to the overall system architecture, Silixa began the integration of its intelligent Distributed Acoustic Sensor (iDAS) to the ZONESEC platform. An on-site integration pilot has already been successfully completed at ACCIONA’s premises in Spain. A second on-site integration pilot will take place in December, 2016 in Athens.

Using ULTIMA DTS and utilising existing single mode fibre optic cables, Silixa has also deployed a permanent distributed temperature monitoring system in the Middle East, to continuously monitor seabed temperature along the first 30 km from an offshore platform. The system records and transfers distributed temperature data in real-time to the onshore control room.  Additional platforms are expected to be instrumented with Silixa’s monitoring system in 2017

For more information please Contact Us.



2016-12-09T10:18:00+00:00December 8th, 2016|News|

Silixa to present at the 49th AGU Fall Meeting in San Francisco, USA on 12 December, 2016

Silixa Ltd will be presenting the results of several active distributed temperature sensing (Active-DTS) surveys at AGU 2016 in San Francisco on 12 December, 2016.

The surveys were conducted using  Silixa’s ULTIMA™ DTS and XT-DTS™ to measure soil water content at high-resolution along a forested hill slope in the United Kingdom.

Active-DTS is a technique that combines distributed temperature measurements with a heat pulse sent along the optical cable. Soil water content profiles can be extracted from temperatures trends during heating and/or cooling phases.

The Distributed intelligent Heat Pulse Sensor (DiHPS) project is funded by the British National Environmental Research Council (NERC) and is being carried out by the University of Birmingham, the British Geological Survey (BGS) and Silixa Ltd.

Abstract ID and Title: 181376: High-Resolution Monitoring of Soil Water Dynamics in a Vegetated Hillslope by Active Distributed Temperature Sensing
Final Paper Number: H13K-1563
Presentation Type: Poster
Session Date and Time: Monday, 12 December 2016; 13:40 – 18:00
Session Number and Title: H13K: Advancing Ecohydrology with Geophysics Posters
Location: Moscone South; Poster Hall

AGU’s Fall Meeting is the largest Earth and space science meeting in the world. It provides a forum for presenting the latest discoveries, trends, and challenges in the field.

For more information please Contact Us.

Related links: AGU Fall Meeting 2016

Image courtesy of: Blake Everett – Own work, CC0, Wikimedia Commons  

2016-11-30T11:04:30+00:00November 8th, 2016|Events|

Silixa’s XT-DTS™ now offers tunable range capability for optimised performance

Silixa has expanded the capabilities of the XT-DTS, the highest performance ruggedised distributed temperature sensor on the market.

In addition to delivering the established high standards of resolution, accuracy and reliability and a class-leading operating temperature range of -40°C to +65°C, the latest version of the XT-DTS sensor now has a tunable range of 2, 5 & 10 km allowing an optimised performance in the harshest of environments.

For more information please Contact Us.



2016-12-09T10:18:00+00:00December 5th, 2016|News|

Silixa to present at the 2nd International Conference for Fibre-optic and Photonic Sensors for Industrial and Safety Applications (OFSIS 2017) in Brisbane, Australia on 8th – 10th January 2017

Daniel Finfer, Silixa’s Head of Applications Development, will be presenting at OFSIS 2017 in Brisbane, Australia on 8th – 10th January 2017.

The presentation titled Flow monitoring of industrial slurries and oilfield production using the Metering intelligent Distributed Acoustic Sensor (MiDAS) will reveal the results of the world’s first pilot installation for a nonintrusive, multizone flow metering system based on distributed acoustic sensing (DAS). (Authors: Daniel Finfer and Mohammad Amir (Silixa Ltd.); Phil Newman, Steve Amor, Neil Rein, Clinton Naicker (Anglo American PLC)

Silixa was commissioned by Anglo American to execute the DAS-based pilot installation at eMalaheni Water Reclamation Plant (EWRP), where 30 ML per day of Acid Mine Water (AMD) is reclaimed from local coal mines for use as both drinking water and within mining operations.

During this pilot, 6 separate liquid flow zones in 3 different regions of the plant were instrumented using a single optical fiber.  Zone 1 of the installation featured a large scale HDPE water supply line feeding water from the surrounding mines into the plant. This pipe is metered continuously using a conventional magnetic flow meter, making it straightforward to obtain reference flow rates. The HDPE flow line in Zone 2 handles water processing slurry, the solids content of which varies over time. Zones 3-6 were installed along on a multibranch stainless manifold handling high rate liquid flow. Reference data in this last region of the plant was obtained via a clamp-on ultrasonic meter.

During the course of the 6-week pilot, flow rates were monitored continuously using the MiDAS system, and automatically uploaded from the plant in rural South Africa to the Silixa Headquarters in London. MiDAS output was compared with the rates obtained by Anglo American using conventional sensors. It will be shown that the sensing layout was straightforward to install, and that the output is in good agreement with conventional sensors.  Opportunities and challenges for large scale future applications of this nonintrusive system will be considered.

In addition to applications on industrial slurries as described above, Silixa will describe recent experience gained using this same opto-acoustic sensing architecture for the measurement of multiphase flows in the oil and gas industry. It will be seen that the MiDAS flow monitoring technology offers a robust approach to flow rate measurement and composition trending for oilfield production across the full range of gas void fraction (GVF) and water in liquid ratio (WLR).

For more information please contact us.

Related Links: OFSIS 2017


Image by AwOiSoAk KaOsIoWa, CC BY-SA 3.0, Wikimedia Commons

2016-12-09T10:18:00+00:00October 20th, 2016|News|

Silixa to exhibit at the Unconventional Resources Technology Conference in San Antonio, USA on 1-3 August, 2016

Silixa will be exhibiting at the Unconventional Resources Technology Conference in San Antonio, USA on 1-3 August, 2016.

Jointly organized by the Society of Petroleum Engineers (SPE), the American Association of Petroleum Geologists (AAPG) and the Society of Exploration Geophysicists (SEG), the forum has become the premier science-based marketplace for unconventional exploration, drilling and production ideas and technologies.

To see how we can expand your hydraulic fracture monitoring and seismic acquisition options please visit us at our stand!

For more information please contact us.

Related Links: Unconventional Resources Technology Conference, San Antonio, USA


Image courtesy of Henry Camacho, Wikimedia Commons

2019-02-06T13:05:47+00:00June 22nd, 2016|Events|

Silixa announces the Carina™ Sensing System

Silixa announces the Carina™ Sensing System; distributed coverage with sensitivity beyond that of point sensors, enabled by Constellation™ fibre.

Carina is a versatile fibre optic sensing system and comprises an advanced optoelectronics interrogator and sensing cables, which are equipped with the new family of engineered Constellation fibres; to gain two orders of magnitude more sensitivity (100x or 20dB improvement) over that achieved with standard fibres.

Silixa has led the way in the development of high performing distributed fibre optic sensors since 2007; the intelligent Distributed Acoustic Sensor (iDAS™) is at the forefront of DAS performance in terms of stability, range, spatial resolution and phase coherency.

Applications such as borehole seismic, well production profiling, pipeline leak detection and perimeter security have benefited from the inherent nature of the technology whereby a standard optical fibre acts as a huge sensor array.

Now a transformative performance improvement has been achieved by advancing the state of the iDAS optoelectronics interrogator architecture, together with the introduction of new and proprietary Constellation fibre. This fibre is engineered to provide bright scatter centres along its length to capture and reflect more light back to the interrogator. This is achieved without introducing significant loss to the forward propagating laser pulses.

For the first time, with Carina Sensing System it is possible to achieve the massive coverage of distributed sensors without having to compromise on sensitivity.

The significance of this step change in performance is most acute in applications with low acoustic signal levels such as is common with leak detection and production monitoring, where acoustic information can be present at, or below, the inherent system noise floor of the current technology and therefore difficult to detect.

Borehole seismic applications stand to benefit from greatly reduced source effort required to achieve high quality, densely sampled seismic data leading to significantly reduced operating time and costs. The higher sensitivity also paves the way for passive seismic and microseismic monitoring across the large aperture of the fibre and enables the possibility of vast, cost effective, sensing arrays using a single cable

In addition to standard singlemode and multimode optical fibres, a family of Constellation fibres can be incorporated into a number of different cable types for downhole and surface deployment. Silixa also offers an intervention solution using this technology where the fibres are integrated into a hybrid electric-line cable.



2019-02-06T13:05:47+00:00June 5th, 2016|News|

Silixa to exhibit at the 78th EAGE Conference & Exhibition in Vienna, Austria on 30 May – 2 June, 2016

Silixa will be exhibiting at the 78th EAGE Conference & Exhibition in Vienna, Austria on 30 May – 2 June, 2016.

The show is the world’s largest geoscience event that addresses key aspects of the oil & gas industry; the newest technologies, latest developments and innovative services.

To learn more about Silixa’s distributed fibre optic technology please visit us at booth 2312 or email to arrange a meeting.

For more information please contact us.

Related Links: 78th EAGE Conference and Exhibition


Image courtesy of Gryffindor – Own work, CC BY 2.5, Wikimedia Commons

2016-02-18T15:05:34+00:00February 18th, 2016|Events|

Silixa to present and exhibit at the 4th Annual Shale World UK in London on 18-19 May, 2016

Craig Milne, Silixa’s Vice President Oil & Gas, will present on Distributed Acoustic Sensing (DAS) providing an in-well measurement strategy at the 4th Annual Shale World UK in London, on 18 May, 2016 at 15.00 pm.

Silixa’s distributed fibre optic sensing technology can significantly improve the safety and efficiency of shale gas operations by providing a permanent monitoring tool to evaluate the effectiveness of stimulation and subsequently the zone-by-zone production over the life of the well.

Craig’s presentation will primarily focus on real-time acoustic monitoring of proppant placement to understand stage efficiency, early warnings of screen-outs and evaluation of diverter efficiency. He will also demonstrate how microseismic event detection within the treated or adjacent well can determine frack positions and heights.

To learn how our life-of-well applications can address your particular requirements, please visit us at booth 17.

For more information please contact us.

Related Links: 4th Annual Shale World UK, 2016


Image courtesy of  by Andrew Dunn, “Routemaster Bus, Piccadilly Circus”, Wikimedia Commons

2016-04-04T13:44:42+00:00February 2nd, 2016|Events|

Silixa to present at the 4th European Flow Measurement Workshop in Noordwijk, Netherlands on 29-31 March, 2016

Silixa will be presenting material co-authored with Roxar on Multiphase, Multizone Flowmetry via Eddy Tracking and Sound Speed Measurement using a Distributed Acoustic Sensing System at the 4th European Flow Measurement Workshop in Noordwijk, Netherlands on 29-31 March, 2016.

Flowmetry using DAS can be performed unobtrusively via a single sensing fibre wrapped densely on the exterior of a pipe. Using this geometric arrangement, DAS output can be interpreted for information relating to both eddy convection and sound speed data in upstream environments.

Daniel Finfer, Silixa’s Head of Applications Development, will share the results of a multiphase flow measurement test where three DAS-enabled sensing zones were installed in series with a ROXAR multiphase flow meter (MPFM) within a three-phase flow loop. The output from these experiments showed good agreement between the DAS and MPFM across a broad range of flow speeds and flow types, including single phase liquid and gas flows, two phase liquid-gas and liquid-liquid flows, and three phase oil-water-gas flows.

The 4th European Flow Measurement Workshop provides a forum for the most experienced engineers and specialized measurement institutes in flow measurement to share their latest developments and challenges in flow metering systems and liquid flow. End users can update their knowledge and share their best practices and challenges on utilizing these flow meter systems.

Related Links: 4th European Flow Measurement Workshop

For more information please Contact Us.

Image courtesy of Reboelje (Own work) via Wikimedia Commons


2016-01-12T19:21:18+00:00January 12th, 2016|Events|

Silixa to host online webinar on Fibre Optic Based Distributed Acoustic and Temperature Sensing

Dr Michael Mondanos, Silixa’s Vice President Industrial Applications, will be hosting an online webinar on Fibre Optic Based Distributed Acoustic and Temperature Sensing at 14:00-15:00 BST on 11 April, 2016.

The webinar will offer an introduction to the technology used in optical fibre based distributed sensors with a focus on distributed temperature and acoustic sensing. There will be a review of applications where monitoring systems are used today including reservoir management, environmental and process monitoring. Emphasis will be given to seismic survey acquisitions and pipeline surveillance deployments.

Organised by IChemE’s Process Management & Control Special Interest Group, the event is free of charge and open to all.

To register your attendance please click here: Fibre Optic Based Distributed Acoustic and Temperature Sensing Webinar

For more information please contact us.

Related Links: Fibre Optic Based Distributed Acoustic and Temperature Sensing Webinar – Full details



2019-02-06T11:01:05+00:00February 23rd, 2016|Events|
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