技術升級 油藏監測更上一層樓

Ikon Science announce that RokDoc 6.6.0 is to be released during the SEG 2018 including the launch of a new RokDoc 4D Reservoir Monitoring product. This release demonstrates Ikon’s continuing focus on enabling E&P companies to improve efficiencies, reduce costs and maximise ROI.

RokDoc Reservoir Monitoring offers significant new functionality. RokDoc now supports corner point grid data, allowing the integration of static (geomodel) and dynamic (flow simulation) property models into 3D/4D shared earth models that can be utilised for 4D time lapse feasibility and ‘close the loop’ workflows.? Using this comprehensive new toolset, asset teams can work collaboratively to update geomodel and simulation data with information from 4D seismic and other sources.

David H. Johnston, PhD, PG, an expert in the field of reservoir characterisation and time-lapse seismic, commented ‘’Establishing the rock physics link between the geological and engineering properties of a reservoir and its seismic properties is essential to 4D interpretation. Ikon Science’s RokDoc provides the tools necessary to estimate the reservoir’s elastic properties and determine how they depend on the rock properties, stress, temperature, and fluid saturation.? Simulation-to-seismic modelling, now integrated within RokDoc, increases the odds that 4D data will positively impact business decisions resulting in increased reserves, recovery, and production rates’’.

Ikon Science is developing new offerings in the field of Corporate Knowledge Management. Ikon’s machine learning approach to quantitative interpretation involves the capture, aggregation and management of rock property information in a corporate knowledge management system so that it is then possible to identify, extract and deliver high-quality data for training of ML algorithms.? ML algorithms can then be rapidly deployed across assets delivering novel solutions to subsurface E&P and drilling challenges.

RokDoc 6.6.0 see’s numerous usability and workflow improvements for the handling of large well datasets, with the addition of new multi-well selection capabilities across the software.? In response to customer feedback, RokDoc 6.6 now supports the loading, manipulation and conversion of gather datasets with irregular offsets, common in land-based projects.

End users can now move seamlessly from well-based rock physics, pressure and geomechanical analysis of conventional and unconventional reservoirs through to data-driven, 3D seismic reservoir characterisation, delivering 3D analytical geomechanical, petrophysical and elastic property models in a single, unified platform.?

Kester Waters, Global Portfolio Manager – Reservoir commented ‘’with numerous oil and gas basins across the globe entering into a new era of late stage production and decommissioning, it is more important than ever that technology keeps pace and enables economic tail end production to be realised and vital infrastructure to be preserved.? In order to achieve this goal, we need to handle larger, more complex, multi-vintage datasets and apply algorithms that are capable of delivering more information both spatially and temporally and at a higher resolution.? This new software release is delivering solutions that help our clients to do that’’.

In this latest addition to the tool kit, users can integrate static and dynamic geological property models with lab, core, well and seismic data to generate 4D petro-elastic models for 4D feasibility and time lapse seismic interpretation. The 4D framework delivers exceptional modelling flexibility allowing users to quickly and easily identify and test geological scenarios against seismic observations. Key features include; connectivity to Petrel*, import and combine multiple CPG’s across a model, 4D data grouping/handling, sophisticated geostatistics and 4D rock physics modelling, date varying time-depth relationships, post/pre-stack synthetic modelling, post/pre-stack noise modelling, view date control and 4D residuals.?

Industry Challenges

Significant decommissioning costs approaching as basins mature

• Requirement to prolong field life and offset decommissioning
• Maximise economic recovery from tail end production
• Economic exploitation of small infill opportunities and satellite hydrocarbon pools
• Effective value of information studies for 4D

Inefficiencies in field management and operations

• Minimise well spend
• Drainage strategies not performing to expectation
• Recovery rates lower than desired
• Inconsistent validation, risking and ranking of infill hydrocarbon targets
• Stress changes impacting drilling windows and well bore integrity

Uncertainty in production forecasting and history matching

• Seismic not fully utilised in static and dynamic model updates
• Inability to quickly update engineering models and explore and validate production scenarios

RokDoc Reservoir Monitoring

Robust: Establish and implement 4D projects to prolong field life

• Rapidly construct and investigate integrated elastic shared earth models to identify value of information of 4D
• Fast 4D modelling for future facilities and development requirements
• Integrate data across multiple disciplines and plan effective 4D work programmes

Fast: Rapidly identify inefficiencies in the development and production strategy

• Optimise planned and on-going reservoir development activities
• Monitor reservoir and well integrity to identify e.g. out-of-zone injection
• Deliver a pro-active well stock and rate management plan to optimise drive e.g. steer the waterflood
• Drill highest value wells first

Accurate: Explore, capture and integrate 4D seismic to deliver improved history match

• Quickly and easily evaluate and validate production scenarios against seismic data
• Effectively communicate between engineering, geological and geophysical disciplines
• Single platform, with connectivity to third-party software reduces time wasted and inefficiencies in data transfer
• Optimise engineering models based on robust 4D seismic interpretation