Seis News

 

 

 

PGS: Article on Least-Squares Full-Wavefield Migration

In The Leading Edge this January, Shaoping Lu and co-authors present their new least-squares full-wavefield migration technology.

Depth migration of the full reflected wavefield, including primary and sea-surface reflected energy (also referred to as free surface multiples or high order reflections), can significantly enhance image illumination and resolution compared to conventional migration.  Shaoping Lu, Faqi Liu, Nizar Chemingui, Alejandro Valenciano and Andrew Long outline how least-squares full-wavefield migration (LS-FWM) directly computes earth reflectivity by iteratively solving the inversion problem.

Conventional migration of primary reflections often yields insufficient imaging illumination and resolution and this can be due to limitations in both acquisition geometry and the processing technology employed.  Separated Wavefield Imaging (SWIM) uses the downgoing pressure wavefield to exploit the extended illumination provided by sea-surface reflections.  Full Wavefield Migration (FWM) jointly images both primary and sea-surface reflected energy but crosstalk and the balancing of the contribution of each component (primary imaging and SWIM) are issues.

In contrast to the limitations noted above, the LS-FWM solution directly computes the earth reflectivity, balances the contributions of primary and sea-surface reflected energy and produces an image that is free of crosstalk interference noise.

Successful applications to both synthetic and field data from the Gulf of Mexico and the North Sea demonstrate that LS-FWM greatly improves the imaging illumination, mitigates the acquisition footprint and reduces cross talk.

In the example below from a WAZ survey from the Gulf of Mexico, considerable improvements can be seen by comparing FWM images with LS-FWM images.  The main benefits are less crosstalk and better illumination and resolution.  The image improvements include a reduction of the acquisition footprint, higher temporal and spatial resolution and improved wavenumber content. Fault structures are better resolved and amplitudes are more balanced throughout the section.

More     Link

 

 

 

Polarcus: Extends MC collaboration and vessel agreement with TGS

Reference is made to the stock exchange release published by Polarcus Limited (“Polarcus” or the “Company”) (OSE: PLCS) on 17 October 2016 regarding a multi-client collaboration and vessel agreement with TGS-NOPEC Geophysical Company ASA (“TGS”).

Polarcus has extended the agreement with TGS for an additional year. Under the agreement, the companies will continue to jointly develop selected 3D multi-client projects and TGS will extend its vessel commitment with Polarcus to the end of 2018 for up to 10,000 sq. km. The recently announced XArray project in the Gulf of Mexico with TGS forms part of this commitment. Additional awards under this commitment will be announced separately.

“This agreement will continue to leverage the core strengths and expertise of both parties,” stated Duncan Eley, Polarcus CEO. “Polarcus acquired over 15,000 sq.km of high quality broadband 3D seismic data for TGS during 2017 and the collaboration will further drive vessel utilization in 2018.”

Link

 

 

 

 

Polarcus: Vessel utilization for Q4-17 and FY-17

Polarcus Limited (“Polarcus” or the “Company”) (OSE: PLCS) announces the Company’s fourth quarter (Q4) 2017 and full year (FY) 2017 vessel utilization as follows:

Utilization	Q4 – 2017	Q4 – 2016		FY 2017	FY 2016
Utilization	68%	72%		77%	83%
By category:
Contract Seismic	58%	55%		71%	71%
Multi-Client	10%	17%		6%	12%
Transit	12%	16%		13%	12%
Yard	0%	3%		2%	2%
Standby	20%	9%		8%	3%

Polarcus Nadia is excluded from vessel utilization subsequent to cold-stacking on 01 April 2015

The Company will be releasing its fourth quarter 2017 report on 27 February 2018 at approximately 07:00hrs CET (10:00hrs UAE). A webcast and conference call will be hosted by Polarcus commencing at 09:00hrs CET (12:00hrs UAE).

Link

PGS: Q4-17 MC Revenues ~ $170 Million – EBITDA > $100M

Based on a preliminary review of Q4 sales, Petroleum Geo-Services ASA expects to report total MultiClient revenues of approximately $170 million in Q4 2017, which should result in a consolidated EBITDA in excess of $100 million.

The Company has seen good sales from its global MultiClient library across regions, in particular from its existing library in Brazil and recent and ongoing surveys in Malaysia.

EBITDA as used by the Company excludes depreciation, amortization, impairment charges and other charges (such as restructuring cost and changes in provision for onerous customer contracts). Reference is made to the definitions of EBITDA and other alternative performance measures in the Company’s annual and quarterly reports. The completion of the Company’s year-end financial reporting and review procedures could result in impairments, changes to provisions or changes compared to earlier estimates of restructuring cost.

The Company provides this information based on a preliminary summary of sales. The Company has not completed its financial reporting and related consolidation, review and control procedures, including the review of all sales against the established revenue recognition/cut-off criteria. The estimates provided in this release are therefore subject to change and the Q4 2017 financial statements finally approved and released by the Company may deviate materially from the information herein.

Link

 

 

 

PGS: Vessel allocation Q4-17

PGS routinely releases information about 3D vessel utilization after the end of each quarter.

Summary of vessel utilization:

               

The Q4 2017 vessel statistics includes eight vessels for the full quarter, as well as Ramform Vanguard for one month before it was cold-stacked. The high share of Stacked/Standby is primarily due to winter warm-stacking* of two vessels, in accordance with PGS’ current vessel operation plan. All cold-stacked* vessels are excluded from the statistics from the time of stacking.

PGS will release its Q4 and preliminary full year 2017 results on Thursday February 1, 2018, at approximately 07:00 am Central European Time (CET). A corresponding presentation is scheduled for 09:00 am CET the same day.

*The term “cold-stacked” is used when a vessel is taken out of operation for an extended period of time. Costs are reduced to a minimum, with the vessel preserved for a long idle time, all or most in-sea seismic equipment removed from the vessel, and typically the crew required to operate the vessel is terminated. Use of the term “warm-stacked” means that the vessel is temporarily taken out of operation with streamers and all other equipment necessary to perform seismic operation still onboard the vessel and the crew required to operate the vessel can be sourced with some delay.

Link

 

 

FairfieldNodal: Acquires WGP

FairfieldNodal announces it has finalized its agreement to purchase the assets of WGP Group Ltd., a premier provider of marine geophysical services headquartered in the U.K., effective 31 December 2017.

FairfieldNodal, known as an industry leader in marine seismic nodal technology, continues to pursue opportunities to strengthen and expand its technology portfolio. FairfieldNodal seeks to transform itself into a world-class provider of integrated life of field seismic services, data and data analytics over the next three to five years through a combination of strategic partnerships and acquisitions.  WGP provides a unique set of adjacencies to complement FairfieldNodal’s existing technology and services, specifically its proprietary ZLoF semi-permanent reservoir monitoring technology,

“We are excited about the expertise, talent, and track record of strong project execution we gain with the WGP acquisition,” says Charles (Chuck) Davison Jr, President and CEO of FairfieldNodal.  “WGP’s proven technology and operational capabilities around active reservoirs make them a natural fit into the FairfieldNodal suite of services.  We look forward to working with the WGP team, combining forces to provide customers with seamless reservoir services and increasing our collective value proposition.”

Link

 

 

 

ESG Solutions: Powers Innovative Well Completion Evaluations for Hydraulic Fracturing

ESG Solutions, an industry leader in microseismic solutions for the oil and gas and mining industries, has developed advanced analytical applications for microseismic data that helps operators understand the effectiveness of different fracturing techniques, and predict the capability of a fracture network to sustain the flow of hydrocarbons back to the well. The study on fracture effectiveness will be presented as a Keynote paper at the Society of Petroleum Engineers – Hydraulic Fracturing Technology Conference held in The Woodlands, Texas from January 23 to 25 in 2018.

ESG’s Chief Technology Officer Dr. Ted Urbancic will present the paper as a keynote speaker during a Wednesday session focusing on unconventional fracturing.  “This will be a fantastic opportunity for valuable discussion surrounding the benefits of microseismic analysis beyond the typical level of interpretation that operators obtain from a microseismic program,” says Urbancic.  “There’s really a lot of potential value we can extract from microseismic data to help operators understand and predict production from unconventional wells, and we’re looking forward to sharing our ideas with colleagues in the industry.”

“We’re incredibly pleased to co-author a paper with a recent client that shows some very promising results and insights in terms of different fracturing strategies and the resulting producing volumes,” says Doug Angus, Manager of the Innovation and Technology Group at ESG. “Through collaboration we are able to ensure our advancements in technology help operators maximize the returns on monitoring investments and are helping to solve the problems that matter most to them.”

In addition to showcasing its advanced analytical microseismic solutions in the keynote session, ESG will also be exhibiting on the show floor to demonstrate capabilities in both downhole and surface hydraulic fracture monitoring as well as Interactive Seismicity Monitoring.

To learn more about microseismic and seismic monitoring capabilities for oil and gas applications visit ESG Solutions in The Woodlands, Texas from January 23 – 25 at HFTC Exhibition booth #304.

Link

 

 

 

Polarcus: Financial Calendar 2018

FINANCIAL YEAR 2017

27.02.2018 – Quarterly Report – Q4

FINANCIAL YEAR 2018

11.05.2018 – Quarterly Report – Q1

26.07.2018 – Half-yearly Report

01.11.2018 – Quarterly Report – Q3

27.04.2018 – Annual Report

10.05.2018 – Annual General Meeting

Link

 

 

 

 

 

Fugro: Oil seepage mapping collaboration wins environmental leadership award

Fugro has been honoured with an Environmental Leadership Award from The Maritime Alliance, a California-based non-profit organisation that promotes sustainable, science-based ocean and water industries.

The recognition was received in San Diego during the organisation’s BlueTech Week, an international gathering of over 485 marine professionals from academia, government, and industry.

Sharing in the award was Planck Aerosystems, a drone intelligence company specialising in highly autonomous unmanned aerial systems. Fugro collaborated with Planck Aerosystems on a project to identify and map oil seepage from abandoned offshore well sites in Santa Barbara County. The work was performed for long-time Fugro customer Aqueos Corporation under contract to the non-profit environmental group Heal the Ocean. Results from this project prompted the California State Assembly to pass legislation SB-44 funding a legacy oil and gas well removal and remediation programme through 2028. The legislation was signed into law in October.

The Maritime Alliance cited the Fugro/Planck Aerosystems collaboration as a prime example of member companies working together for mutual benefit, as well as to the benefit of the ocean environment. Craig McLean, assistant administrator and acting chief scientist for the National Oceanic and Atmospheric Administration (NOAA), presented the awards.

“We are grateful to be recognised by The Maritime Alliance for this collaboration,” said Todd Mitchell, remote sensing manager for Fugro. “Partnerships such as this are an important part of our business process, and we are pleased to have helped facilitate a solution that has effected legislative change for the good of all stakeholders.”

In addition to the Environmental Leadership Award, Fugro received a Certificate of Special Congressional Recognition, signed by Representative Duncan Hunter.

Link

 

 

 

Schlumberger: Digital Technology

Harvesting collaboration with digital technologies to optimize efficiency and production

Collaboration is at the core of Schlumberger digital efforts with one of the company’s latest technology offerings bringing together diverse domains to improve efficiency and production.

Schlumberger introduced its DELFI cognitive E&P environment, which leverages digital technologies such as security, analytics and machine learning, high-performance computing and the Internet of Things to improve operational efficiency and deliver optimized production, in September during the SIS Global Forum in Paris. Schlumberger also released the DrillPlan digital well construction planning solution which is the first step in the DELFI cognitive E&P environment.

Following the SIS Global Forum, Gavin Rennick, president of Software Integrated Solutions, spoke to Hart Energy about the new releases, technology, next steps and more. The DrillPlan solution and DELFI environment are two examples of how the company is using technology to improve collaboration both within companies and in the industry.

In the article “Schlumberger Talks Harvesting Collaboration With Digital Technology” Rennick describes how digital technologies can improve efficiency and production, and how DrillPlan is developed with a focus on enhanced user collaboration—providing a new way of working for drilling teams with a solution that enables access to all data and science needed in a single, common system.

More     Link