TGS Montney seismic survey allows companies to pre-assess induced seismicity hazards

TGS will conduct its seventh onshore seismic project for 2018 in the Montney shale formation of northeast British Columbia.

The Dawson Phase II 3D multi-client seismic survey is located east of TGS' previously announced Dawson Phase I. The new project will encompass approximately 274 square kilometres providing both an enhanced imaging solution and rock physics characterization of the Montney shale.

The high fold vibroseis data will be processed by TGS utilizing its modern land imaging technology, allowing operators to satisfy recent regulatory requirements to map faults for pre-assessment of induced seismicity hazards.

Permitting on the survey has already commenced and data acquisition is expected to begin in the second half of 2018. Preliminary data will be available in the first quarter of 2019, with final data available in the third quarter.

"TGS continues to strengthen its onshore position with new seismic investments in prolific and high potential onshore plays across North America. Dawson Phase II further expands upon adjacent TGS seismic data in the Montney Formation of Alberta and British Columbia, an area long targeted for oil and gas exploration,” Kristian Johansen, TGS CEO, said in a statement.

“Our growing onshore seismic library, combined with our vast database of well data and interpretive products, uniquely positions TGS to help our customers develop the best data driven subsurface models and provide significant benefits to their exploration and production efforts."

Offshore Eastern Canada acquisition

TGS, with partner Petroleum Geo-Services (PGS), also announced more 3D multi-client acquisition offshore Eastern Canada. A second vessel, the Ramform Sterling, will be allocated to the 2018 East Canada acquisition program to acquire a minimum 2,700 square kilometres of 3D seismic, including additional data within the 2017 Harbour Deep and Cape Broyle 3D survey outlines. Acquisition is expected to complete in the third quarter.

Following this eighth consecutive season of offshore data acquisition, the jointly-owned library will have more than 175,000 kilometres of 2D GeoStreamer data and approximately 40,000 square kilometres of 3D GeoStreamer data. An expansive well log library is also available in the region, along with advanced multi-client interpretation products that will improve play, trend and prospect delineation, TGS said.

Pre-processing of the initial GeoStreamer signal will be performed by PGS onboard the Ramform Sterling, following which TGS will perform data processing using its Clari-Fi broadband technology. Fast-track data will be available in the first quarter 2019 with final data in the second quarter. The project is supported by industry funding.

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