Earthworks was formed in 2001 to provide services and
consultancy internationally to the oil and gas industry.
Specialising in subsurface geosciences, Earthworks has a
broad set of skills in geophysics, geology, geostatistics and
risk and uncertainty evaluation.
Professional and Technical Services provided by experts to experts:•Seismic Quantitative Interpretation (QI) Studies•Rock Physics and Fluid Replacement Modelling•Velocity Modelling•Geostatistical Depth Conversion•Risk & Uncertainty Modelling and Prospect Peer Review•Integrated Field Studies including petrophysics and seismic interpretation•Petrel Geostatistical Consulting•Advanced Well:Seismic Ties using our in-house AutoCal™ Software•Seismic Bandwidth Enhancement•Extended Elastic Impedance Analysis•Pre- & Post-Stack Seismic Inversion•Deterministic & Stochastic Seismic InversionSeismic Inversion• All pre- and post-stack seismic inversion methods including EEI and colouredinversion, pre-stack simultaneous inversion for IP/IS/Rho and UltraFast stochasticinversion• EEI and pre-stack seismic inversion can be applied both in frontier exploration andin development stages of the E&P cycle• All seismic inversion studies are carried out using proprietary ESI software, alsoavailable as a plug-in for Petrel* and DecisionSpace**. ESI supports any numberof input stacks• Earthworks have considerable experience of seismic inversion projects onbroadband data• Lithology and Fluid volumes can be produced using EEI projection, as well astransformation to petrophysical volumes• Additionally, Earthworks can calculate new independent Vp/Vs ratio measures andchanges in AVO class, without requiring well data, in exploration and developmentsettings. This has been successfully applied on the OGA Rockall dataGRV Uncertainty and STOIIP Estimation• Volumetric analysis and prospect volumetric generation for prospects andreservoirs• Testing for amplitude conformance with structure, the ideal input for which isdetuned amplitude data• Probabilistic GRV uncertainty distribution based on appropriate closure criteriaincluding full to spill or fault seal• All computations are performed using Earthworks’ HIIP volumetric uncertainty anddepth conversion software packageDT-AMP™ 3D Seismic Detuning• Unique technology for 3D seismic detuning, developed by Earthworks• Prospect de-risking by removing thickness related effects from amplitude data,leaving amplitude anomalies caused by pore-fill or lithology• Better understanding of the extents of the reservoir• Can be applied to any pre- or post-stack inversion output• Seismic net-pay with well calibration• Automatic output of multiple attributes for further analysisSeismic Data Conditioning• Rigorous seismic and well data conditioning prior to seismic inversion• Gather conditioning, ensuring common bandwidth across all the stacks andamplitude scaling• Time alignment for residual NMO corrections• Spectral Enhancement and Zero-phasing across the stacks• Proprietary Dip Consistent Noise Rejection filter (DCNR) for improved signal tonoise ratio• Renowned expertise on well-ties (no stretch and squeeze!), wavelet estimation andlog calibration using proprietary WaveAlign™ and AutoCal™ technology
Maximise your data value on projects large or small with our expert knowledge & services
Vs/Vp Direct from Seismic
Coloured Inversion EEI -70o
Stochastic Inversion EEI -70o Realisation 001
Sea Lion: original
Sea Lion: DCNR
Earthworks is a world leader in stochastic seismic inversion technology. In addition to undertaking stochastic inversion studies using our UltraFast MPSI™technology, we also offer the only 3-term pre-stack simultaneous stochastic inversion for IP, IS and density.
Earthworks Reservoir Subsurface Description Solutions and Technologiesfrom Experts for Experts
Technical Services - Software Solutions - Training