Implementing Exploration Archives for data management and online storage

OMV Group is one of Austria's largest listed industrial companies. The OMV Upstream business segment operates in 20 countries around the world and has a considerable seismic library.

In 2013, the OMV seismic data management infrastructure included an internal hierarchical storage management (HSM) system for archiving processed SEGY data, vendor proprietary archiving software and an aging metadata application.

With the metadata on an aging application and SEGY data stored in vendor's proprietary format, OMV needed a solution.
OMV contracted OvationData to address the challenges and provide a solution that ensured a productive workflow and secured the integrity of the seismic data library.

The solution

OvationData's solution included three key elements:

  • Replace the existing metadata application with a modern seismic data management software, Exploration Archives
  • Convert the data from the vendor's proprietary format to a common and unencumbered readable format
  • Host the processed data at OvationData's datacentre

The challenge

The project involved extracting metadata from an aging Oracle® database. The schema was relatively straightforward and easily mapped into Exploration Archives. However, some support files were stored in the database (as a CLOB data type) with references to a disk location. OvationData materialized the files on disk, rationalized duplicate files and assigned a unique file name.

The processed SEGY data proved very difficult to extract. We used the vendor's software for a portion of the extraction and wrote our own decoding software for the remaining files. The goal was to reconstitute each discrete SEGY volume to disk, assign it a unique file number, and match it back to the metadata that had been migrated into Exploration Archives.

The result

Installing Exploration Archives and training the users was simple and straightforward. In January 2014, the launch and transition to Exploration Archives was seamless with the assistance of OMV's exceptional data management team, supported by a responsive IT support team. A key contributor to the project's success was the collaboration with OMV's internal Exploration Archives expert.

With few exceptions, all archived files were successfully migrated from legacy servers and systems into OvationData's data store. All of the files are now uniquely identified and in a common readable format.

In April 2015, OvationData completed the data conversion activities. OMV data management staff continue to maintain the library and catalogue data internally, transfer it to OvationData, and OvationData places that data online or in physical storage. An approved seismic data manager has access to download files using Exploration Archives, while users from multiple OMV locations have access to view online files.

Multi-client data management

Petroleum Geo-Services (PGS) is one of the largest global providers of multi-client seismic data. With an active fleet of eight 3D vessels, PGS produces large volumes of high-quality seismic data each year. Their ever-increasing seismic library serves 24 offices worldwide.

In 2013, PGS began evaluating options for improving the management of their seismic library on a global level.

The solution

PGS required a solution that included expert management, secure storage and instant availability to quickly dispatch data to an international set of clients.

Since 2014, OvationData has been under contract to provide PGS with a fast, high-quality service level, a modern high-capacity on-line disk system for managing data, and a single data management application to streamline data management workflows.

The service and solution OvationData provides ensures that PGS meets client expectations for the efficient delivery of high-quality multi-client seismic data.

Massive digitising project for well logs

OvationData has an ongoing contract with a large-scale multi-national oil producer to provide well log services. In 2011, we began vectorising a repository from multiple fields. To date, we have completed more than 30 million curve-metres of well log data with many more fields still to be done. The scale of this project is unrivaled in the industry.

OvationData's highly skilled technicians use specialised software to provide the client with complete datasets in a modern format. We rationalised datasets from more than 10,000 wells for a variety of fields, some dating from the 1950s.

In conjunction with the digitising project, the client commissioned OvationData to perform data processing for an exploration project. We provided vectorising, depth matching and compositing services to combine data of all vintages. Working closely with the client, we resolved issues inherent in combining historical data for use with modern software.

OvationData's advanced methods, facilities and geophysical experts contribute to the success of this historical digitising project.

Improving the quality of well log datasets

One of the world's largest independent exploration and production companies required OvationData's expertise to provide composited datasets for 80 high-priority wells.

The client submitted existing digital files and scanned image files of the well logs to OvationData. The quality and detail for each well log varied significantly.

The solution

Our trained technicians began investigating each digital file to establish an inventory of the information included with the data. We repaired many damaged files and reformatted the data to extract the curves required by the client for their project.

We identified the possible duplicate files and performed comparison activities to confirm if the duplicate files were identical. For files that were not identical, we determined which file contained the most reliable datasets.

For the scanned well logs, our technicians performed an assessment on the files that had missing digital well log data and established a list of files that could be used to expand the dataset with vectorisation. Using our proprietary DiplomatTM Wellman software, we vectorised scanned images and improved the quality of the final datasets.

After compiling and preparing the collection of data files, we created composited files by depth matching, splicing and merging log runs into a single file.

Tape remastering project with exhaustive quality control

Wintershall Noordzee is one of the largest producers of natural gas in the Netherlands and particularly in the North Sea. Wintershall places a priority on maintaining their inventory of seismic data to ensure quality and accessibility for further processing and interpretation.

The solution

Based on previous successful projects with Wintershall Noordzee, OvationData was awarded this transcription project. The seismic data was originally stored on 31,800 cartridges of various types, and 3,000 9-track open reel tapes. To meet the storage requirements for the project, our scope of work included the required processes for migrating the data to high-density IBM® 3592 cartridges.

OvationData received the full inventory of media with Wintershall's standard tape storage boxes and generated a run-list for each box. Using specialised software, we created copies of the data on internal disk space.

Using the legacy inventory, we identified all datasets, located the data in virtual boxes and organised it into products. During the quality control procedures, OvationData performed strategic processes to achieve the quality requirements for the field data, gathers data, processed data and P1/90 navigation data.

The result

For field data, OvationData concatenated the data to ensure no line was split across outputs on the 3592 media. We produced shot record displays for each line at 500 shotpoint intervals. To verify that the complete survey was transcribed, we checked the shotpoint line range against P1/90 navigation data.

For gathers and gathers data sets, we binned the data. We generated near, mid and far trace cubes together with time slices and fold coverage displays.

For processed data sets, we generated time slices and the root mean square (RMS) amplitude value displays. Using these displays, we validated the integrity of the data and identified discrepancies in the transcription data to be restored.

For P1/90 navigation data, we created sail line maps and coverage plots. We created coverage plots for all BIN data sets. For all other data types, such as interpretation and raw navigation, we encapsulated in RODE format to preserve the native formats.

OvationData transcribed the large volume field and gathers data to 3592 cartridges, and produced a back-up copy. We wrote the processed data to TAR format at one megabyte (1MB) block lengths to 3592 cartridges.

Collaboration project: Avatar-m

AVATAR-m is a collaborative research and development project, supported by Innovate UK. The AVATAR-m project addresses the issues associated with massive (exabyte sized) data archives such as intelligent storage, constant migration cycles and degradation of archives.

The AVATAR-m project aims to bridge the gap between archiving as a long-term preservation activity and the role that archives have as working repositories of an organization's most valued assets. The scope of the AVATAR-m project is to produce a set of products that provide an innovative approach to planning and managing large-scale, sustainable and integrated digital archive solutions.

Throughout the project, OvationData works with companies, institutions and universities with a range of technical expertise and a common interest in long term audio and visual preservation.

Consortium Partners:

  • OvationData
  • BBC - Research and Development
  • Southampton University -IT Innovations
  • Xyratex
  • University of Edinburgh

Collaboration project: Muppits

Producing an efficient and competitive resource plan

Multiple User Post-Production IT Services (MUPPITS) is a research and development project that addresses the challenges for the post-production industry to adopt complex processing requirements and tapeless workflows.

MUPPITS brings together key players in the UK post-production value-chain to investigate, develop and demonstrate a new service oriented approach to film and broadcast post-production. This approach with be a catalyst to collaborative working and encourage new business models.

Typically post-production companies make huge investments in in-house infrastructure to maintain high resource capacities. The scale, complexity and turnaround time of post-production work places high demand on rendering resources and activities. The result is high costs, wasted power and organizational inefficiency, a situation that is rapidly becoming unworkable.

MUPPITS aims to development a structure that facilitates collaborative work by combining resources in a mutually beneficial business environment.

Consortium Partners:

  • OvationData Services (ODS)
  • BBC
  • High Definition and Digital Cinema (HDDC)
  • Sohonet
  • Pinewood Studios
  • Smoke and Mirrors
  • Molinaire
  • Digital TV Group
  • IT Innovation