Category: Oil & Gas

08 May 2020
ODH4+ DAS Interrogator Unit

OptaSense Introduces New Advanced Interrogator Unit for the Oil and Gas Industry

ODH4+ High Performance Distributed Acoustic Sensing Interrogator Unit For Enhanced Fibers

ODH4+ DAS Interrogator Unit

The best DAS interrogator unit on the market just got better

Built upon the industry’s leading interrogator unit technology, the OptaSense ODH4+ high performance distributed acoustic sensing interrogator unit delivers superior measurements in multiple applications with the flexibility of using high backscatter fiber cables.

The ODH4+ IU provides value to both engineering and geoscience applications which require variable spatial resolution.  Unlike conventional interrogator units , the ODH4+ IU is capable of measuring with ANY fiber from ANY vendor (single mode, multi-mode or enhanced high backscatter) for superior signal-to-noise ratio levels. With the ability to provide variable spatial resolution regardless of the glass present in the cable, operators are no longer limited to a specific fiber dedicated to single measurement, expanding the possibilities for sensing any physical process.

The ODH4+ delivers higher signal-to-noise ration with variable spatial resolution.

Enhanced Sensitivity

When combined with high backscatter fiber, the ODH4+ unit delivers a level of enhanced sensitivity capable of responding to the smaller signals associated to more subtle changes in the reservoir like those associated with the hydraulic fracturing processes.

System Performance

The ODH4+ IU utilizes a key redesign of OptaSense’s leading-edge DAS interrogator unit technology specifically designed to take advantage of the availability of new enhanced fiber-optic technology for specialized applications and signal requirements. The new IU design delivers superior performance, generating cleaner and stronger signals on a variety of fibers.

Improved Features

The ODH-4+ offers several enhancements to our current interrogator unit distributed sensing technology, including more robust laser controls optimizing the highest signal fidelity. With the variety of fiber-optic cables now available in the market, the ODH4+ system provides the flexibility to interrogate various fibers without compromising the measurements and without incurring additional hardware costs specific to these given fibers.

The OptaSense ODH4+ interrogates BOTH enhanced and conventional fibers.
17 Apr 2020

Version 2.9 of DxS Browser Now Available

OptaSense, a QinetiQ company, is excited to announce the release of Version 2.9 of the OptaSense DxS Browser Visualization Software suite. The software allows users to easily integrate large distributed data sets into workflows, including 3D depth, time and measurement data, while managing quality control, analysis and interpretation.

Several major improvements have been incorporated into the version 2.9 release, including:

  • Sparse data set visualization – The DxS charting framework has been upgraded to provide a mode for displaying very sparse datasets, by removing the gaps between data segments and displaying the data on a non-linear time scale.  This enhancement will provide support for analyses of datasets involving looking for long term trends, and easier comparison of datasets captured at widely separate time intervals.  At the same time, the representation of areas on the waterfall where no data is available has been changed to make it more readily distinguishable from areas of low signal.
  • DTS datum trace import and export – the DxS Browser will now allow DTS data datum traces to be shared between projects and datasets for consistent and efficient data analyses.
  • Time-shift capability for imported curves – the DxS Browser now allows users to clean up imported data series (curves) by applying timestamp corrections.
  • Enhanced data tree refresh button operation – the usability of the DxS Browser has been enhanced by allowing the data tree to be refreshed readily when curves have been modified by DxS plugins.
  • Transferable waterfall colour maps – both the colour map, and the colour map limits, can now be copied from one waterfall to another, improving user efficiency when presenting data.
  • Interpolating line plots – the user can now select for interpolation across large gaps when drawing line-plots of sparsely or unevenly sampled data series.

Learn more about the DxS Browser Software suite HERE

08 Apr 2020
Global Support Service Map

OptaSense Introduces Support Services For Distributed Fiber Optic Systems

Maximize Your Fiber Optic System Availability!

Global Support Service Map

OptaSense’s long-term support for distributed fiber optic sensing systems can maximize operator’s fiber optic sensing system reliability and availability through a range of balanced service packages that combine both technical support, services management and a framework that is focused on system Uptime, Maintainability and Life of Asset Support.

07 Apr 2020
Offshore Oil Rig

High Backscatter fiber improves DAS performance

OptaSense, the industry leader in Distributed Acoustic Sensing (DAS) solutions, has integrated the latest high backscatter optical fiber technology with its industry leading DAS interrogators for unparalleled downhole measurement performance.

Combining high backscatter fiber with OptaSense’s DAS interrogator unit delivers the best possible sensitivity, resolution and signal to noise ratio delivering high-fidelity measurements:

  • Enhanced seismic data acquisition
  • Improved production monitoring
  • Increased microseismic event detection and count
  • More sensitive strain measurements for detection of frac hits

The unique high backscatter fiber used by OptaSense provides a continuous amplification of the DAS signal, enabling flexibility in setting measurement parameters in the field, including channel spacing and gauge length.

This flexibility to optimize interrogator parameters to the specific physical processes in the well and reservoir is an important departure from the restrictions that other commercially available enhanced fibers have in terms of pre-set gauge lengths and channel spacing.

Field Demonstration of High Backscatter Optical Fiber

Demonstration of the technology has been conducted in wellbores by comparing the performance of high-backscatter and standard single-mode fibers. This comparison was made with the shortest gauge length typically used in fracture monitoring applications. The enhanced backscatter fiber results in clear seismic signals with reduced background noise and improved signal fidelity.

High Backscatter Optical Fiber Test Results
01 Apr 2020
land drilling rig

OptaSense Authors Pen New Oilfield DAS Application Article

land drilling rig

"Making Sense of Unconventionals With DAS" Appears in Oilfield Technology Magazine

Members of the OptaSense Oilfield Services technical team recently penned an article for Oilfield Technology magazine. The article, “Making Sense of Unconventionals With DAS,” written by Dr. Marcel Grubert, Dr. Xinyang Li and Dr. J. Andres Chavarria, provided a review of applications of distributed fiber optic acoustic and temperature sensing in unconventional reservoirs. 

03 Feb 2020

OptaSense opens new offices to meet growing Canadian market

OptaSense Calgary Office

Calgary – OptaSense, a QinetiQ company, a world leader in fiber-optic-based acoustic sensing, recently announced that it has expanded its Canadian presence in order to better serve its growing business in the country.

The company, which provides industry leading monitoring services in the upstream and midstream oil and gas businesses, recently moved its location in Calgary, Alberta.  The new facility is located at 999 57th Ave NE, next to Calgary International Airport and AB Highway 2. The increase in office, lab and shop space supports OptaSense’s growth of its engineering, field and service teams to support the expanding Canadian market.

Additionally, a satellite sales and support office has been opened in the heart of downtown Calgary to better serve OptaSense’ s expanding customer base in that area.  The new downtown office, located at 350 7th Ave SW, Suite 2900, provides ready access to support our customers.

Tony Meszaros, Managing Director for Oilfield Services, believes the two new locations demonstrate OptaSense’ commitment to its customers and the Canadian market, “Both new facilities provide expansion for not only our oil and gas services, but for the entire OptaSense fiber-optic sensing portfolio. Canada represents a tremendous opportunity and with these new locations, we are better positioned to meet the needs of the market.”

About OptaSense

OptaSense is a wholly-owned subsidiary of the QinetiQ Group.

It is a platform technology which has applications in a number of markets, including infrastructure security where the technology is already in use to monitor 25,000 km of assets, principally providing leak detection and third-party intrusion detection for oil and gas pipelines.

OptaSense is the world leader in Distributed Acoustic Sensing and operates in 40 countries globally across multiple industries including Oil & Gas, Defense & Security, Transport and Utilities.

19 Jun 2019

OptaSense Awarded Key Pakistan Pipeline and Producing Facility Perimeter Intrusion Detection Project

OptaSense, a QinetiQ company, a world leader in fiber-optic-based acoustic sensing, was recently awarded a key pipeline and gas producing facility /central producing facility perimeter intrusion detection system (PIDS) project by the pipeline and facility operator.

Having successfully installed the first pipeline protection system of its kind in Pakistan on a pipeline network in the Khyber Pakhtunkhwa Province of Northwest Pakistan, the operator selected OptaSense to follow up the initial procurement with another project that covers the Mardankhel west pipeline and wells, also located in the same province.

Building on the success of the Makori East pipeline network protection project, and utilising the existing fiber-optic infrastructure already in place, OptaSense will install a second intrusion detection system to protect the pipeline right-of-way from third party intrusion (TPI), covering the entire Mardankhel Pipeline network, as well as providing perimeter intrusion detection on the producing facility perimeter. This project included upgrading the existing system to the latest software version and integrating a new CCTV system covering the producing facility perimeter, enabling cross-cueing of the CCTV system to the respective alerts.

Jeff Williamson, Managing Director of OptaSense’s Infrastructure Security Monitoring (ISM) division stated “Not only is this the first project with our regional partner, but this is the first of its type in Pakistan. It will provide the customer with a secure pipeline and ensures a safe corridor to operate in. We hope that this provides a benchmark in countries where pipeline hot taps are wide spread.”

About OptaSense

OptaSense is a wholly-owned subsidiary of the QinetiQ Group

It is a platform technology which has applications in a number of markets, including infrastructure security where the technology is already in use to monitor 30,000 km of assets, principally providing leak detection and third-party intrusion detection for oil and gas pipelines.

OptaSense is the world leader in Distributed Acoustic Sensing and operating in 40 countries globally with operations across multiple industries including Oil & Gas, Defence & Security, Transport and Utilities.

17 Aug 2018

OptaSense earns “Qualified Supplier” certification for North Sea oil and gas market

OptaSense recently earned the designation “Qualified Supplier” by Achilles JQS, the leading industry initiative for pre-qualifying suppliers in the Nordic market. This prestigious designation ensures that buyers in the North Sea oil and gas market can trust OptaSense to provide reliable service that meets all Nordic environmental and regulatory requirements.

13 Jul 2017

Real-time Cluster Efficiency

Distributed fiber optic sensing for uniform fracture stimulation

Evaluating stimulation performance and well spacing early in development can increase a projects Net Present Value. This is especially true when developing stacked intervals.  For example, studies have shown that plug-and-perf completions often produce under-performing perforation clusters and undesired inter-well communication.

To address under-performing perforation clusters, operators are combining Distributed Acoustic Sensing (DAS) and Distributed Temperature Sensing (DTS)measurements to calculate the amount of fluid and proppant placed in each cluster on the fly to enable optimized decision-making throughout a project ensure more effective fracturing on current and future wells.

Recent observations from fiber optic DAS and DTS indicate that a majority of treatment volume is limited to only one or two dominate clusters near the heel-side of a treatment stage—leaving the remaining stage clusters under stimulated.

With a large majority of perforation clusters failing to contribute to production, you can’t help but ask: Where’s my proppant going and why?

Assessing cluster efficiency, fluid distribution and diverter effectiveness

There are many possible reasons for uneven reservoir stimulation, such as stress shadowing interference between fractures, local heterogeneity, the effectiveness of zonal isolation between stages, stimulation design (pumping schedules and fluid/proppant selection), and the variation in natural fracture systems surrounding the well.

Fiber optic monitoring, such as DAS and DTS can be used to assess cluster efficiency, fluid and sand distribution and diverter effectiveness.

On a recent spacing pilot in the Anadarko Basin, home to several stacked interval reservoirs, a five-well project equipped with OptaSense Distributed Fiber Optic Sensing offered another explanation for the heel-side bias. For this project fiber optic derived DAS and DTS measurements provided the operator an opportunity to monitor fluid movement during fracture stimulation and warm-back before the well was produced.

Monitoring distribution

During treatment, acoustic and temperature data confirmed inadvertent diversion away from toe-side clusters, and acceleration of the already-dominant heel-side clusters. Using algorithms applied to DAS data, proppant volumes per cluster were calculated revealing highly uneven proppant distribution among multiple clusters even when fluid is uniformly distributed

The DAS measurements captured in this pilot project suggested a strong heel bias was present in a majority of stages. The uneven distribution, caused by interference between adjacent fractures within a given stage and from preceding fracture stages, resulted in a consistent geometric predominance for fracture growth toward the most heel-ward perforation cluster.

A variety of completion variables, such as perforation designs, fluid systems, diverter and proppant size, were tested to identify the optimal treatment for improved fluid distribution.

Simulating distribution

Using these measurements, the operator used calculated proppant placement to monitor diversion efficiency in real-time during the fracture and took action to modify the treatment, which resulted in more even fluid and treatment distribution. After modeling the improved distributions derived from fiber optic monitoring, a new well completion and stimulation design resulted in more equal fracture heights and half lengths, as well as increased the overall effective fractures in the wellbore.

Multiple optimizations in pressure pumping strategy were discovered during the variable testing using real-time DAS and DTS. The pumping schedule was altered to test different rations of slick water and high viscous fluids, ratios in proppant sizes and concentrations of proppant within the various fluids.

Optimizing distribution

Using DAS and DTS to estimate fluid and proppant placement enabled the operator to identify the root problem and implement an effective proppant and fluid treatment (aligned with an optimized pressure pump schedule) that mitigated the uneven stimulation. The result, improved cluster efficiency and more uniform proppant/fluid distribution on current and future stages and wells.