EVOLUTION THROUGH NEW FUNCTIONALITY AND APPLICATIONS
`Q-Marine gets even better
`
`in 2000 demand for 0-Marine technology
`has grown
`Since its introduction
`exponentially This year WesternGeco
`of its 100th QMarine
`celebrated completion
`survey and successful
`results have been achieved in every major offshore hydrocarbon
`province around the world Rather
`than sit back on this success WesternGeco
`continuing to evolve and improve the technology
`and is applying the system to solve
`several old and new industry challenges
`
`is
`
`fundamentally
`
`The launch of Q-Marine followed years of analysis to identify the key sources of noise
`and error that
`impact seismic data quality and repeatability The result was
`calibrated
`system with four key components
`redesigned
`acquisition
`single sensors and steerable streamers This
`sources calibrated positioning calibrated
`has consistently
`and
`combination
`delivered high resolution
`data for reliable processing
`inversion results enabling enhanced
`and commercially
`reservoir
`characterization
`successful 4D surveys
`0-Marine surveys have typically
`to WesternGeco
`According
`40% improvement
`300% improvement
`and
`in bandwidth
`resulted
`in
`in repeatability
`relative to conventional systems The
`00th survey was the 4th generation of Q-on-Q 4D
`surveys over Statoils Name field in the North Sea where Q-Marine has successfully
`imaged the 4D signal of changes
`in the reservoir over production intervals less than 15
`months
`
`and repeatability Q-Marine
`of enhancing resolution
`In addition to meeting the objectives
`has enabled the potential of several advanced
`to be realized The
`imaging techniques
`have been known since the
`benefits of the dual
`towed-streamer
`over/under
`technique
`it has been impossible to achieve the necessary
`mid 1980s but until recently
`pairing of the two streamers Streamer steering
`and fine spatial sampling of sensors
`has now enabled the method to be properly implemented Following successful
`2D and 3D surveys using the
`trials WesternGeco
`several commercial
`has acquired
`The method and results of
`in the Gulf of Mexico combining
`dual
`technique
`in paper ACQ
`over/under
`streamers with dual over/under
`sources are presented
`220 p.m Monday Results of the broader signal bandwidth deeper penetration and
`by the method are being presented daily on the
`achieved
`higher signal-to-noise
`Western Geco booth
`
`vertical
`
`field
`
`at
`
`test
`
`the quality and efficiency
`has enhanced
`Q-Marine technology
`such as rich-azimuth towed-streamer
`techniques
`
`better
`
`innovative
`
`of several other imaging
`In regions of complex
`surveys
`and geohazards much
`this approach can illuminate underlying reservoirs
`overburdens
`Streamer steering
`than conventional single-azimuth source-receiver
`geometries
`turns and
`stress-induced noise recorded by the sensors during vessel
`reduces
`remaining noise can be effectively
`removed thanks to finely sampled receivers This
`line turns and facilitates
`some
`combination
`enables
`recording to continue
`throughout
`The results of several successful
`programs
`acquisition
`booth
`daily on the WesternGeco
`Marine projects are being presented
`
`rich-azimuth
`The company is
`
`HIGHLY CONFIDENTIAL INFORMATION -- SUBJECT TO PROTECTIVE ORDER
`
`WG0608955
`
`WESTERNGECO
`
`09-C V-01 827
`
`PTXII4
`
`PGS v WESTERNGECO (IPR2014-00689)
`WESTERNGECO Exhibit 2093, pg. 1
`
`

`

`wide-azimuth towed-streamer
`illuminate the
`survey to better
`currently
`acquiring
`geology beneath complex salt bodies in an area covering more than 200 Outer
`Continental Shelf blocks in the Gulf of Mexico
`
`Another example where Q-Marine has enhanced
`coverage for 3D surveys
`maximizing subsurface
`well demonstrated during acquisition
`survey over the Marlim complex of fields
`of
`by Petrobras in the Campos basin offshore Brazil This heavily obstructed
`operated
`area is known for unpredictable currents and sea states
`Innovative utilization
`of
`recording and streamer steering enabled subsurface
`remote source vessel continuous
`coverage and offset distribution to be optimized while adhering to stringent
`safety
`limits around platforms and other infrastructure
`such as close-approach
`
`techniques
`acquisition
`in obstructed areas Its benefits were
`
`is in
`
`regulations
`
`WesternGeco
`
`is continuing to add new functionality and evolve existing Q-Marine
`and repeatability by further reducing the
`to deliver even better
`resolution
`technology
`steps once considered
`as
`noise behind the seismic signal Several data processing
`fine-tuning have now become standard such as receiver motion and tidal
`marginal
`static corrections Correction for source height variation will soon be introduced
`effects of swell and tide based on dynamic measurements
`the shot-to-shot
`removing
`from GPS units on the floats
`
`repeatability will also soon be introduced
`
`An upgrade to further improve positioning
`Q-Marine equipped vessel
`Today
`is steered so that source positions
`follow pre-plot
`and feathering
`system that has delivered
`is controlled using the Q-Fins
`positions
`ty in areas of good current conditions The new system
`xcellent po
`adds an automated 4D position controller and
`steering of the sources to
`independent
`dynamically adjust source and streamer
`steering based on comparison of realtime
`position data for the in-sea equipment with
`planned 4D positions
`from the previous survey
`is complimented by new
`The whole process
`planning and evaluation software
`complex
`simulator has been developed to safely test in
`an office environment
`the steering algorithms
`and hydrodynamic models of the acquisition
`system used on the vessels The WesternGeco
`game based on this simulator
`booth features
`vessel
`that enables players to steer
`through
`the new
`congested oilfield with and without
`spread control demonstrating how
`advanced
`optimizing the whole system delivers even
`800 words
`better
`
`_______________________________
`
`repeatability
`
`Experience steering through
`
`congested
`
`oilfield on the WesternGeco booth
`
`HIGHLY CONFIDENTIAL INFORMATION -- SUBJECT TO PROTECTIVE ORDER
`
`WG0608956
`
`PGS v WESTERNGECO (IPR2014-00689)
`WESTERNGECO Exhibit 2093, pg. 2
`
`