American Oil and Gas Reporter - July 2018 - 89

SpecialReport: New Tech & Geosciences
rock property variations, plus a structural
overprint with complex faulting at deeper
levels," according to Akentieva. "These
projects should improve well targeting,
well positioning and lateral drilling hazard
mitigation."
Seismic attributes are a key focus,
revealing subtle faults and fracture zones.
"Clients want to understand rock property
variations along the longer trend. We
are also working on some advanced
seismic attributes and inversion techniques to offer the industry enhanced
value in identifying possible sweet
spots," she adds.
Preliminary data from the recently acquired West Hackberry 3-D survey is expected to be available soon, Akentieva
reports. This project covers 300 square
miles targeting the Meramec and Chester
formations, mainly in Garfield County.
In the Permian Basin, meantime, TGS
is acquiring data in three projects-West
Kermit, West Lindsey and Sanderson-
that extend from the edge of the Central
Basin Platform across the eastern flank
of the Delaware Basin. These surveys
target the liquids-rich Wolfcamp and Bone
Spring formations. The surveys also capture imaging of the deeper Paleozoic section. "We feel that the Wolfcamp, in particular, offers great prospectivity in this
flanking trend," Akentieva says.
Sanderson is 177 square miles, largely
in Pecos County, Tx., while the West
Lindsey survey covers the western flank
of the Delaware Basin's Wolfcamp trend.
In both areas, operators are looking for
stratigraphic variations and subtle structural
variations, according to Akentieva. Because
of the structural complexity of the
Delaware, TGS recommends depth migration and offers PSDM as part of its
multiclient library, she points out.
"There is a real drive across the Permian
for more seismic data to better predict
rock and geomechanical properties, understand fluid variations, and identify
fairways," Akentieva observes. "Our technology has been evolving to provide tools
that are most suitable for Permian plays,
including algorithms trained for environments with statics, noise and structural
complexity."
In British Columbia, TGS has initiated
operations on the 95 square-mile Dawson
Phase II 3-D survey in the Montney
trend, beyond the developed area to the
west covered by Dawson Phase I. The
Triassic is the primary target, but both
the overlying Cretaceous formation and
deeper Paleozoic potential will be imaged

with high resolution.
"This dataset will be used to target
new well locations and predict drilling
hazards, which is very important in that
particular complex environment," comments Akentieva. "We are finding subtle
structural variations in the Montney formation itself, and generating seismic attributes that help predict rock and geomechanical properties.
"TGS continues to strengthen its on-

shore position with new seismic investments in prolific and high-potential onshore plays across North America," Akentieva concludes. "Our growing onshore
seismic library, integrated with our extensive database of well data and interpretive products, positions TGS to help
our customers develop the best datadriven subsurface models and provides
the industry with the tools to increase
productivity and well results."
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American Oil and Gas Reporter - July 2018

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